Canon imageCLASS MF4890dw User manual
Application
This manual has been issued by Canon Inc. for qualied persons to learn technical theory,
installation, maintenance, and repair of products. This manual covers all localities where the
products are sold. For this reason, there may be information in this manual that does not
apply to your locality.
Corrections
This manual may contain technical inaccuracies or typographical errors due to improvements
or changes in products. When changes occur in applicable products or in the contents of this
manual, Canon will release technical information as the need arises. In the event of major
changes in the contents of this manual over a long or short period, Canon will issue a new
edition of this manual.
The following paragraph does not apply to any countries where such provisions are
inconsistent with local law.
Trademarks
The product names and company names used in this manual are the registered trademarks
of the individual companies.
Copyright
This manual is copyrighted with all rights reserved. Under the copyright laws, this manual may
not be copied, reproduced or translated into another language, in whole or in part, without the
consent of Canon Inc.
© CANON INC. 2011
Caution
Use of this manual should be strictly supervised to avoid disclosure of condential
information.
Explanation of Symbols
The following symbols are used throughout this Service Manual.
Symbols Explanation Symbols Explanation
Check. Remove the claw.
Check visually. Insert the claw.
Check the noise. Use the bundled part.
Disconnect the connector. Push the part.
Connect the connector. Plug the power cable.
Remove the cable/wire
from the cable guide or wire
saddle.
Turn on the power.
Set the cable/wire to the
cable guide or wire saddle.
Remove the screw.
Tighten the screw.
The following rules apply throughout this Service Manual:
1. Each chapter contains sections explaining the purpose of specic functions and the
relationship between electrical and mechanical systems with reference to the timing of
operation.
In the diagrams, represents the path of mechanical drive; where a signal name
accompanies the symbol, the arrow indicates the direction of the electric signal.
The expression "turn on the power" means ipping on the power switch, closing the front
door, and closing the delivery unit door, which results in supplying the machine with power.
2. In the digital circuits, '1' is used to indicate that the voltage level of a given signal is "High",
while '0' is used to indicate "Low". (The voltage value, however, differs from circuit to
circuit.) In addition, the asterisk (*) as in "DRMD*" indicates that the DRMD signal goes on
when '0'.
In practically all cases, the internal mechanisms of a microprocessor cannot be checked
in the eld. Therefore, the operations of the microprocessors used in the machines are not
discussed: they are explained in terms of from sensors to the input of the DC controller
PCB and from the output of the DC controller PCB to the loads.
The descriptions in this Service Manual are subject to change without notice for product
improvement or other purposes, and major changes will be communicated in the form of
Service Information bulletins.
All service persons are expected to have a good understanding of the contents of this Service
Manual and all relevant Service Information bulletins and be able to identify and isolate faults
in the machine.
Contents
Safety Precautions
CDRH Provisions -------------------------------------------------------------0-2
Laser Safety --------------------------------------------------------------------0-2
About Laser Beams --------------------------------------------------------------- 0-2
Handling Laser Scanner Unit --------------------------------------------------- 0-2
Toner Safety --------------------------------------------------------------------0-3
About Toner ------------------------------------------------------------------------- 0-3
Handling Adhered Toner --------------------------------------------------------- 0-3
Notes on Handling Lithium Battery ---------------------------------------0-3
Notes on Assembly/Disassembly -----------------------------------------0-3
1 Product Overview
Product Lineups ---------------------------------------------------------------1-2
Main Unit ----------------------------------------------------------------------------- 1-2
Options ------------------------------------------------------------------------------- 1-3
Features -------------------------------------------------------------------------1-4
Features ------------------------------------------------------------------------------ 1-4
Product Specications -------------------------------------------------------1-4
Main Unit Specications ---------------------------------------------------------- 1-4
Wireless LAN Specications ---------------------------------------------------- 1-6
FAX Specications ----------------------------------------------------------------- 1-6
Name of Parts ------------------------------------------------------------------1-7
External View ----------------------------------------------------------------------- 1-7
MF4890dw/MF4880dw ------------------------------------------------------------------- 1-7
MF4870dn/MF4830d/MF4780w/MF4770n/MF4750/MF4730 ------------------- 1-8
MF4820d/MF4720w/MF4712/MF4710 ------------------------------------------------ 1-9
D530 ------------------------------------------------------------------------------------------1-10
L418S/L410/L190 -------------------------------------------------------------------------- 1-11
Cross Section ----------------------------------------------------------------------1-12
DADF -----------------------------------------------------------------------------------------1-12
SADF -----------------------------------------------------------------------------------------1-12
READER -------------------------------------------------------------------------------------1-13
Printer -----------------------------------------------------------------------------------------1-13
Printer -----------------------------------------------------------------------------------------1-14
Control Panel ----------------------------------------------------------------------1-14
MF4890dw/MF4880dw/MF4830d/MF4820d ----------------------------------------1-14
MF4780w/MF4770n/MF4750/MF4730/MF4720/MF4712/MF4710 -----------1-16
D530 ------------------------------------------------------------------------------------------1-17
L418S/L410/L190 --------------------------------------------------------------------------1-18
2 Technical Overview
Basic Conguration -----------------------------------------------------------2-2
Conguration function ------------------------------------------------------------ 2-2
Basic Sequence -------------------------------------------------------------------- 2-2
Basic Sequence of Operation ----------------------------------------------------------- 2-2
Print Sequence ------------------------------------------------------------------------------ 2-3
Controller System -------------------------------------------------------------2-4
Main Controller --------------------------------------------------------------------- 2-4
General description ------------------------------------------------------------------------ 2-4
Engine Controller ------------------------------------------------------------------ 2-4
General description ------------------------------------------------------------------------ 2-4
Service Works ---------------------------------------------------------------------- 2-5
At parts replacement ----------------------------------------------------------------------- 2-5
Maintenance --------------------------------------------------------------------------------- 2-5
Notes on service works ------------------------------------------------------------------- 2-5
Document Exposure/Feeder System ------------------------------------2-6
Document Exposure System ---------------------------------------------------- 2-6
Overview -------------------------------------------------------------------------------------- 2-6
Major Components ------------------------------------------------------------------------- 2-6
Document Feeder System ------------------------------------------------------- 2-7
Overview -------------------------------------------------------------------------------------- 2-7
Various Control ------------------------------------------------------------------------------ 2-8
Service Works ---------------------------------------------------------------------2-10
At parts replacement ----------------------------------------------------------------------2-10
Maintenance --------------------------------------------------------------------------------2-10
Notes on service works ------------------------------------------------------------------2-10
Laser Exposure System --------------------------------------------------- 2-11
Overview ---------------------------------------------------------------------------- 2-11
Overview ------------------------------------------------------------------------------------- 2-11
Controlling the Laser Activation Timing --------------------------------------2-12
Laser ON/OFF Control -------------------------------------------------------------------2-12
Horizontal Sync Control ------------------------------------------------------------------2-12
Laser Control -----------------------------------------------------------------------2-13
Auto Power Control (APC) --------------------------------------------------------------2-13
Laser Scanner Motor Control --------------------------------------------------2-13
Overview -------------------------------------------------------------------------------------2-13
Scanner Motor Fault Detection ---------------------------------------------------------2-14
Service Works ---------------------------------------------------------------------2-14
At parts replacement ----------------------------------------------------------------------2-14
Maintenance --------------------------------------------------------------------------------2-14
Notes on service works ------------------------------------------------------------------2-14
Image Formation System ------------------------------------------------- 2-15
Overview/Conguration ---------------------------------------------------------2-15
Overview -------------------------------------------------------------------------------------2-15
Print Process --------------------------------------------------------------------------------2-15
Static Latent Image Formation Block -------------------------------------------------2-16
Development Block------------------------------------------------------------------------2-17
Transfer Block ------------------------------------------------------------------------------2-17
Fixing Block ---------------------------------------------------------------------------------2-18
Drum Cleaning Block ---------------------------------------------------------------------2-18
High-Voltage Control -------------------------------------------------------------2-19
Overview -------------------------------------------------------------------------------------2-19
Generating Primary Charging Bias ----------------------------------------------------2-19
Generating Developing Bias ------------------------------------------------------------2-19
Generating Transfer Bias ----------------------------------------------------------------2-19
Toner Cartridge --------------------------------------------------------------------2-20
Toner Level Detection --------------------------------------------------------------------2-20
Specication of Toner level display ----------------------------------------------------2-20
Operation when toner level is Low/Nearly Out -------------------------------------2-20
Toner Cartridge Absence/Presence Detection -------------------------------------2-21
Service Works ---------------------------------------------------------------------2-21
At parts replacement ----------------------------------------------------------------------2-21
Maintenance --------------------------------------------------------------------------------2-21
Notes on service works ------------------------------------------------------------------2-21
Fixing System ---------------------------------------------------------------- 2-22
Overview/Conguration ---------------------------------------------------------2-22
Overview -------------------------------------------------------------------------------------2-22
Main Parts of Fixing assembly ---------------------------------------------------------2-22
Various Control Mechanisms --------------------------------------------------2-23
Fixing Temperature Control -------------------------------------------------------------2-23
Protective Functions ----------------------------------------------------------------------2-23
Other Functions -------------------------------------------------------------------2-24
Throughput Down Control ---------------------------------------------------------------2-24
Service Works ---------------------------------------------------------------------2-25
At parts replacement ----------------------------------------------------------------------2-25
Maintenance --------------------------------------------------------------------------------2-25
Notes on service works ------------------------------------------------------------------2-25
Pickup And Feeding System --------------------------------------------- 2-26
Overview ----------------------------------------------------------------------------2-26
Overview -------------------------------------------------------------------------------------2-26
Detecting Jams --------------------------------------------------------------------2-27
Jam Detection Outline --------------------------------------------------------------------2-27
Delay Jams ----------------------------------------------------------------------------------2-28
Reversal Delay Jam --------------------------------------------------------------2-29
Stationary Jams ----------------------------------------------------------------------------2-30
Other Jams ----------------------------------------------------------------------------------2-31
Service Works ---------------------------------------------------------------------2-32
At parts replacement ----------------------------------------------------------------------2-32
Maintenance --------------------------------------------------------------------------------2-32
Notes on service works ------------------------------------------------------------------2-32
External And Controls System ------------------------------------------- 2-33
Power Supply ----------------------------------------------------------------------2-33
Power Supply -------------------------------------------------------------------------------2-33
Protective Functions ----------------------------------------------------------------------2-33
Service Works ---------------------------------------------------------------------2-34
At parts replacement ----------------------------------------------------------------------2-34
Maintenance --------------------------------------------------------------------------------2-34
Notes on service works ------------------------------------------------------------------2-34
3 Periodical Services
Periodically Replaced Parts ------------------------------------------------3-2
Periodically Replaced Parts ----------------------------------------------------- 3-2
Consumables ------------------------------------------------------------------3-2
Consumables ----------------------------------------------------------------------- 3-2
Periodical Service -------------------------------------------------------------3-3
Scheduled Servicing -------------------------------------------------------------- 3-3
Cleaning -------------------------------------------------------------------------3-3
Printer --------------------------------------------------------------------------------- 3-3
Reader ADF ------------------------------------------------------------------------- 3-4
SADF ------------------------------------------------------------------------------------------ 3-4
DADF ------------------------------------------------------------------------------------------ 3-4
4 Disassembly/Assembly
Outline ---------------------------------------------------------------------------4-2
List of Parts ---------------------------------------------------------------------4-3
Main Unit ----------------------------------------------------------------------------- 4-3
Lists of DADF Unit -------------------------------------------------------------------------- 4-3
Lists of SADF Unit ------------------------------------------------------------------------- 4-3
Lists of Reader Unit ----------------------------------------------------------------------- 4-4
Duplex Printer Unit ---------------------------------------------------------------- 4-4
Lists of Motor/Fan -------------------------------------------------------------------------- 4-4
Lists of Solenoid ---------------------------------------------------------------------------- 4-5
List of Sensor -------------------------------------------------------------------------------- 4-5
List of Switch and Speaker --------------------------------------------------------------- 4-6
List of Heater/Thermoswitch/Thermistor ---------------------------------------------- 4-6
List of PCB ----------------------------------------------------------------------------------- 4-7
Single-sided Printer Unit --------------------------------------------------------- 4-7
List of Motor/Fan ---------------------------------------------------------------------------- 4-7
List of Solenoid ------------------------------------------------------------------------------ 4-8
List of Connectors ----------------------------------------------------------- 4-11
DADF Unit -------------------------------------------------------------------------- 4-11
SADF Unit -------------------------------------------------------------------------- 4-11
Reader Unit -------------------------------------------------------------------------4-12
Duplex Printer Unit ---------------------------------------------------------------4-12
Single-sided Printer Unit --------------------------------------------------------4-14
External Cover, Interior ---------------------------------------------------- 4-16
Removing the Left Cover(MF4890dw/4880dw) ---------------------------4-16
Removing the Right Cover(MF4890dw/4880dw)
-----------------------------------------------------------------------------------------4-17
Removing the Front Cover Unit(MF4890dw/4880dw) -------------------4-18
Preparation ----------------------------------------------------------------------------------4-18
Procedure ------------------------------------------------------------------------------------4-18
Removing the Upper Cover(MF4890dw/4880dw) ------------------------4-18
Preparation ----------------------------------------------------------------------------------4-18
Procedure ------------------------------------------------------------------------------------4-18
Removing the Left Cover(MF4870dn/MF4830d)--------------------------4-20
Procedure ------------------------------------------------------------------------------------4-20
Removing the Right Cover(MF4870dn/MF4830d)------------------------4-21
Procedure ------------------------------------------------------------------------------------4-21
Removing the Front Cover Unit(MF4870dn/MF4830d) -----------------4-22
Preparation ----------------------------------------------------------------------------------4-22
Procedure ------------------------------------------------------------------------------------4-22
Removing the Upper Cover (MF4870dn/MF4830d)----------------------4-22
Preparation ----------------------------------------------------------------------------------4-22
Procedure ------------------------------------------------------------------------------------4-22
Removing the Left Cover(MF4820d) -----------------------------------------4-24
Procedure ------------------------------------------------------------------------------------4-24
Removing the Right Cover(MF4820d) ---------------------------------------4-25
Procedure ------------------------------------------------------------------------------------4-25
Removing the Front Cover Unit(MF4820d) ---------------------------------4-26
Preparation ----------------------------------------------------------------------------------4-26
Procedure ------------------------------------------------------------------------------------4-26
Removing the Upper Cover (MF4820d) -------------------------------------4-26
Preparation ----------------------------------------------------------------------------------4-26
Procedure ------------------------------------------------------------------------------------4-26
Removing the Left Cover(D530) ----------------------------------------------4-28
Procedure ------------------------------------------------------------------------------------4-28
Removing the Right Cover(D530) --------------------------------------------4-29
Procedure ------------------------------------------------------------------------------------4-29
Removing the Front Cover Unit(D530) --------------------------------------4-30
Preparation ----------------------------------------------------------------------------------4-30
Procedure ------------------------------------------------------------------------------------4-30
Removing the Upper Cover (D530) ------------------------------------------4-30
Preparation ----------------------------------------------------------------------------------4-30
Procedure ------------------------------------------------------------------------------------4-30
Removing the Left Cover(MF4780w/MF4770n/MF4750/MF4730) ---4-32
Procedure ------------------------------------------------------------------------------------4-32
Removing the Right Cover(MF4780w/MF4770n/MF4750/MF4730) -4-33
Procedure ------------------------------------------------------------------------------------4-33
Removing the Front Cover Unit(MF4780w/MF4770n/MF4750/MF4730) -
4-34
Preparation ----------------------------------------------------------------------------------4-34
Procedure ------------------------------------------------------------------------------------4-34
Removing the Upper Cover MF4780w/MF4770n/MF4750/MF4730) 4-34
Preparation ----------------------------------------------------------------------------------4-34
Procedure ------------------------------------------------------------------------------------4-34
Removing the Left Cover(MF4720w/MF4712/MF4710)-----------------4-36
Procedure ------------------------------------------------------------------------------------4-36
Removing the Right Cover(MF4720w/MF4712/MF4710)---------------4-37
Procedure ------------------------------------------------------------------------------------4-37
Removing the Front Cover Unit(MF4720w/MF4712/4710) -------------4-38
Preparation ----------------------------------------------------------------------------------4-38
Procedure ------------------------------------------------------------------------------------4-38
Removing the Upper Cover (MF4720w/MF4712/MF4710)-------------4-38
Preparation ----------------------------------------------------------------------------------4-38
Procedure ------------------------------------------------------------------------------------4-38
Removing the Left Cover(L418S/L410/L190) ------------------------------4-40
Procedure ------------------------------------------------------------------------------------4-40
Removing the Right Cover(L418S/L410/L190) ----------------------------4-41
Procedure ------------------------------------------------------------------------------------4-41
Removing the Front Cover Unit(L418S/L410/L190)----------------------4-42
Preparation ----------------------------------------------------------------------------------4-42
Procedure ------------------------------------------------------------------------------------4-42
Removing the Upper Cover (L418S/L410/L190)) -------------------------4-42
Preparation ----------------------------------------------------------------------------------4-42
Procedure ------------------------------------------------------------------------------------4-42
Document Exposure/Feeder System ---------------------------------- 4-44
Removing the DADF Unit and Reader Unit(MF4890dw/MF4880dw) 4-44
Preparation ----------------------------------------------------------------------------------4-44
Procedure ------------------------------------------------------------------------------------4-44
Removing the DADF Unit (MF4890dw/MF4880dw)----------------------4-45
Preparation ----------------------------------------------------------------------------------4-45
Procedure ------------------------------------------------------------------------------------4-45
Removing the DADF Pickup Unit (MF4890dw/MF4880dw) ------------4-47
Preparation ----------------------------------------------------------------------------------4-47
Procedure ------------------------------------------------------------------------------------4-47
Removing the DADF Motor Unit (MF4890dw/MF4880dw) -------------4-50
Preparation ----------------------------------------------------------------------------------4-50
Procedure ------------------------------------------------------------------------------------4-50
Removing the DADF Solenoid Unit (MF4890dw/MF4880dw) ---------4-51
Preparation ----------------------------------------------------------------------------------4-51
Procedure ------------------------------------------------------------------------------------4-51
Removing the DADF Pickup Roller Unit (MF4890dw/MF4880dw) ---4-52
Preparation ----------------------------------------------------------------------------------4-52
Procedure ------------------------------------------------------------------------------------4-52
Removing the DADF Separation Pad(MF4890dw/MF4880dw) -------4-54
Preparation ----------------------------------------------------------------------------------4-54
Procedure ------------------------------------------------------------------------------------4-54
Removing the Copyboard Glass(MF4890dw/MF4880dw)--------------4-57
Preparation ----------------------------------------------------------------------------------4-57
Procedure ------------------------------------------------------------------------------------4-57
Removing the Flatbed Motor Unit(MF4890dw/MF4880dw) ------------4-58
Preparation ----------------------------------------------------------------------------------4-58
Procedure ------------------------------------------------------------------------------------4-58
Removing the DADF CIS Unit(MF4890dw/MF4880dw)-----------------4-60
Preparation ----------------------------------------------------------------------------------4-60
Procedure ------------------------------------------------------------------------------------4-60
Removing the SADF Unit and Reader Unit(MF4870dn/MF4830d) --4-62
Preparation ----------------------------------------------------------------------------------4-62
Procedure ------------------------------------------------------------------------------------4-62
Removing the SADF Unit (MF4870dn/MF4830d) ------------------------4-63
Preparation ----------------------------------------------------------------------------------4-63
Procedure ------------------------------------------------------------------------------------4-63
Removing the SADF Pickup Unit (MF4870dn/MF4830d)---------------4-65
Preparation ----------------------------------------------------------------------------------4-65
Procedure ------------------------------------------------------------------------------------4-65
Removing the SADF Motor Unit (MF4870dn/MF4830d) ----------------4-67
Preparation ----------------------------------------------------------------------------------4-67
Procedure ------------------------------------------------------------------------------------4-67
Removing the SADF Pickup Roller 1,2 (MF4870dn/MF4830d) -------4-68
Preparation ----------------------------------------------------------------------------------4-68
Procedure ------------------------------------------------------------------------------------4-68
Removing the SADF Separation Pad(MF4870dn/MF4830d) ----------4-71
Preparation ----------------------------------------------------------------------------------4-71
Procedure ------------------------------------------------------------------------------------4-71
Removing the Copyboard Glass(MF4870dn/MF4830d) ----------------4-74
Preparation ----------------------------------------------------------------------------------4-74
Procedure ------------------------------------------------------------------------------------4-74
Removing the Flatbed Motor Unit(MF4870dn/MF4830d) ---------------4-75
Preparation ----------------------------------------------------------------------------------4-75
Procedure ------------------------------------------------------------------------------------4-75
Removing the SADF CIS Unit(MF4870dn/MF4830d) -------------------4-77
Procedure ------------------------------------------------------------------------------------4-77
Procedure ------------------------------------------------------------------------------------4-77
Removing the Copyboard Cover (MF4820d) ------------------------------4-79
Procedure ------------------------------------------------------------------------------------4-79
Removing the Copyboard Cover and Reader Unit (MF4820d) -------4-79
Preparation ----------------------------------------------------------------------------------4-79
Procedure ------------------------------------------------------------------------------------4-79
Removing the Copyboard Glass(MF4820d) -------------------------------4-81
Preparation ----------------------------------------------------------------------------------4-81
Procedure ------------------------------------------------------------------------------------4-81
Removing the Flatbed Motor Unit(MF4820d) ------------------------------4-82
Preparation ----------------------------------------------------------------------------------4-82
Procedure ------------------------------------------------------------------------------------4-82
Removing the CIS Unit(MF4820d) -------------------------------------------4-84
Preparation ----------------------------------------------------------------------------------4-84
Procedure ------------------------------------------------------------------------------------4-84
Removing the Copyboard Cover (D530) ------------------------------------4-85
Procedure ------------------------------------------------------------------------------------4-85
Removing the Copyboard Cover and Reader Unit (D530) -------------4-86
Preparation ----------------------------------------------------------------------------------4-86
Procedure ------------------------------------------------------------------------------------4-86
Removing the Copyboard Glass(D530) -------------------------------------4-87
Preparation ----------------------------------------------------------------------------------4-87
Procedure ------------------------------------------------------------------------------------4-87
Removing the Flatbed Motor Unit(D530) -----------------------------------4-88
Preparation ----------------------------------------------------------------------------------4-88
Procedure ------------------------------------------------------------------------------------4-88
Removing the CIS Unit(D530) -------------------------------------------------4-90
Preparation ----------------------------------------------------------------------------------4-90
Procedure ------------------------------------------------------------------------------------4-90
Removing the SADF Unit and Reader Unit(MF4780w/MF4770n/
MF4750/MF4730) -----------------------------------------------------------------4-92
Preparation ----------------------------------------------------------------------------------4-92
Procedure ------------------------------------------------------------------------------------4-92
Removing the SADF Unit (MF4780w/MF4770n/MF4750/MF4730) --4-93
Preparation ----------------------------------------------------------------------------------4-93
Procedure ------------------------------------------------------------------------------------4-93
Removing the SADF Pickup Unit (MF4780w/MF4770n/MF4750/
MF4730) -----------------------------------------------------------------------------4-95
Preparation ----------------------------------------------------------------------------------4-95
Procedure ------------------------------------------------------------------------------------4-95
Removing the SADF Motor Unit (MF4780w/MF4770n/MF4750/MF4730
4-97
Preparation ----------------------------------------------------------------------------------4-97
Procedure ------------------------------------------------------------------------------------4-97
Removing the SADF Pickup Roller 1,2 (MF4780w/MF4770n/MF4750/
MF4730) -----------------------------------------------------------------------------4-98
Preparation ----------------------------------------------------------------------------------4-98
Procedure ------------------------------------------------------------------------------------4-98
Removing the SADF Separation Pad(MF4780w/MF4770n/MF4750/
MF4730) --------------------------------------------------------------------------- 4-101
Preparation -------------------------------------------------------------------------------- 4-101
Procedure ---------------------------------------------------------------------------------- 4-101
Removing the Copyboard Glass(MF4780w/MF4770n/MF4750/MF4730)
4-104
Preparation -------------------------------------------------------------------------------- 4-104
Procedure ---------------------------------------------------------------------------------- 4-104
Removing the Flatbed Motor Unit(MF4780w/MF4770n/MF4750/
MF4730) --------------------------------------------------------------------------- 4-105
Preparation -------------------------------------------------------------------------------- 4-105
Procedure ---------------------------------------------------------------------------------- 4-105
Removing the SADF CIS Unit(MF4780w/MF4770n/MF4750/MF4730) ---
4-107
Procedure ---------------------------------------------------------------------------------- 4-107
Procedure ---------------------------------------------------------------------------------- 4-107
Removing the Copyboard Cover (MF4720w/MF4712/MF4710) ---- 4-109
Procedure ---------------------------------------------------------------------------------- 4-109
Removing the Copyboard Cover and Reader Unit (MF4720w/MF4712/
MF4710) --------------------------------------------------------------------------- 4-109
Preparation -------------------------------------------------------------------------------- 4-109
Procedure ---------------------------------------------------------------------------------- 4-109
Removing the Copyboard Glass(MF4720w/MF4712/MF4710) ------4-111
Preparation -------------------------------------------------------------------------------- 4-111
Procedure ---------------------------------------------------------------------------------- 4-111
Removing the Flatbed Motor Unit(MF4720w/MF4712/MF4710) ---- 4-112
Preparation -------------------------------------------------------------------------------- 4-112
Procedure ---------------------------------------------------------------------------------- 4-112
Removing the CIS Unit (MF4720/MF4712/MF4710)------------------- 4-114
Preparation -------------------------------------------------------------------------------- 4-114
Procedure ---------------------------------------------------------------------------------- 4-114
Procedure ---------------------------------------------------------------------------------- 4-114
Removing the DADF Unit and Reader Unit (L418S/L410/L190) ---- 4-115
Preparation -------------------------------------------------------------------------------- 4-115
Procedure ---------------------------------------------------------------------------------- 4-115
Removing the DADF Unit (L418S/L410/L190) -------------------------- 4-117
Preparation -------------------------------------------------------------------------------- 4-117
Procedure ---------------------------------------------------------------------------------- 4-117
Removing the DADF Pickup Unit (L418S/L410/L190)----------------- 4-119
Preparation -------------------------------------------------------------------------------- 4-119
Procedure ---------------------------------------------------------------------------------- 4-119
Removing the DADF Motor Unit (L418S/L410/L190) ------------------ 4-121
Preparation -------------------------------------------------------------------------------- 4-121
Procedure ---------------------------------------------------------------------------------- 4-121
Removing the DADF Solenoid Unit (L418S/L410/L190) -------------- 4-122
Preparation -------------------------------------------------------------------------------- 4-122
Procedure ---------------------------------------------------------------------------------- 4-122
Removing the DADF Pickup Roller Unit (L418S/L410/L190) -------- 4-123
Preparation -------------------------------------------------------------------------------- 4-123
Procedure ---------------------------------------------------------------------------------- 4-123
Removing the DADF Separation Pad (L418S/L410/L190) ----------- 4-126
Preparation -------------------------------------------------------------------------------- 4-126
Procedure ---------------------------------------------------------------------------------- 4-126
Removing the Copyboard Glass (L418S/L410/L190)------------------ 4-128
Preparation -------------------------------------------------------------------------------- 4-128
Procedure ---------------------------------------------------------------------------------- 4-128
Removing the Flatbed Motor Unit (L418S/L410/L190) ---------------- 4-130
Preparation -------------------------------------------------------------------------------- 4-130
Procedure ---------------------------------------------------------------------------------- 4-130
Removing the DADF CIS Unit (L418S/L410/L190)--------------------- 4-132
Preparation -------------------------------------------------------------------------------- 4-132
Procedure ---------------------------------------------------------------------------------- 4-132
Controller System --------------------------------------------------------- 4-134
Removing the Control Panel Unit (MF4890dw/MF4880dw)---------- 4-134
Procedure ---------------------------------------------------------------------------------- 4-134
Removing the Drive Belt (MF4890dw/MF4880dw) --------------------- 4-135
Preparation -------------------------------------------------------------------------------- 4-135
Procedure ---------------------------------------------------------------------------------- 4-135
Removing the Main Motor (MF4890dw/MF4880dw) ------------------- 4-138
Preparation -------------------------------------------------------------------------------- 4-138
Procedure ---------------------------------------------------------------------------------- 4-138
Removing the Main Fan (MF4890dw/MF4880dw) --------------------- 4-140
Preparation -------------------------------------------------------------------------------- 4-140
Procedure ---------------------------------------------------------------------------------- 4-140
Removing the Engine Controller PCB(MF4890dw/MF4880dw) ---- 4-142
Preparation -------------------------------------------------------------------------------- 4-142
Procedure ---------------------------------------------------------------------------------- 4-142
Removing the Main Controller PCB(MF4890dw/MF4880dw) ------- 4-145
Preparation -------------------------------------------------------------------------------- 4-145
Procedure ---------------------------------------------------------------------------------- 4-145
Removing the FAX NCU PCB(MF4890dw/MF4880dw) --------------- 4-145
Preparation -------------------------------------------------------------------------------- 4-145
Procedure ---------------------------------------------------------------------------------- 4-145
Removing the Wireless LAN PCB(MF4890dw only) ------------------- 4-146
Preparation -------------------------------------------------------------------------------- 4-146
Procedure ---------------------------------------------------------------------------------- 4-146
Removing the Paper Leading Edge Sensor PCB(MF4890dw/
MF4880dw) ----------------------------------------------------------------------- 4-146
Preparation -------------------------------------------------------------------------------- 4-146
Procedure ---------------------------------------------------------------------------------- 4-146
Removing the Fixing Delivery/Paper Width Sensor PCB(MF4890dw/
MF4880dw) ----------------------------------------------------------------------- 4-149
Preparation -------------------------------------------------------------------------------- 4-149
Procedure ---------------------------------------------------------------------------------- 4-149
Removing the Toner Sensor and Multi Pickup Sensor Unit (MF4890dw/
MF4880dw) ----------------------------------------------------------------------- 4-151
Preparation -------------------------------------------------------------------------------- 4-151
Procedure ---------------------------------------------------------------------------------- 4-151
Removing the Speaker (MF4890dw/MF4880dw) ----------------------- 4-153
Preparation -------------------------------------------------------------------------------- 4-153
Procedure ---------------------------------------------------------------------------------- 4-153
Removing the Control Panel Unit (MF4870dn/MF4830d) ------------ 4-155
Procedure ---------------------------------------------------------------------------------- 4-155
Removing the Drive Belt (MF4870dn/MF4830d)------------------------ 4-156
Preparation -------------------------------------------------------------------------------- 4-156
Procedure ---------------------------------------------------------------------------------- 4-156
Removing the Main Motor (MF4870dn/MF4830d)---------------------- 4-159
Preparation -------------------------------------------------------------------------------- 4-159
Procedure ---------------------------------------------------------------------------------- 4-159
Removing the Main Fan (MF4870dn/MF4830d) ------------------------ 4-161
Preparation -------------------------------------------------------------------------------- 4-161
Procedure ---------------------------------------------------------------------------------- 4-161
Removing the Engine Controller PCB (MF4870dn/MF4830d) ------ 4-163
Preparation -------------------------------------------------------------------------------- 4-163
Procedure ---------------------------------------------------------------------------------- 4-163
Removing the Main Controller PCB (MF4870dn/MF4830d) --------- 4-166
Preparation -------------------------------------------------------------------------------- 4-166
Procedure ---------------------------------------------------------------------------------- 4-166
Removing the FAX NCU PCB (MF4870dn) ------------------------------ 4-166
Preparation -------------------------------------------------------------------------------- 4-166
Procedure ---------------------------------------------------------------------------------- 4-166
Removing the Paper Leading Edge Sensor PCB(MF4870dn/MF4830d) -
4-167
Preparation -------------------------------------------------------------------------------- 4-167
Procdeure ---------------------------------------------------------------------------------- 4-167
Removing the Fixing Delivery/Paper Width Sensor PCB(MF4870dn/
MF4830d) ------------------------------------------------------------------------- 4-169
Preparation -------------------------------------------------------------------------------- 4-169
Procedure ---------------------------------------------------------------------------------- 4-169
Removing the Toner Sensor and Multi Pickup Sensor Unit (MF4870dn) -
4-172
Preparation -------------------------------------------------------------------------------- 4-172
Procedure ---------------------------------------------------------------------------------- 4-172
Removing the Speaker (MF4870dn) --------------------------------------- 4-174
Preparation -------------------------------------------------------------------------------- 4-174
Procedure ---------------------------------------------------------------------------------- 4-174
Removing the Control Panel Unit (MF4820d) --------------------------- 4-175
Procedure ---------------------------------------------------------------------------------- 4-175
Removing the Drive Belt (MF4820d) --------------------------------------- 4-176
Preparation -------------------------------------------------------------------------------- 4-176
Procedure ---------------------------------------------------------------------------------- 4-176
Removing the Main Motor (MF4820d) ------------------------------------- 4-179
Preparation -------------------------------------------------------------------------------- 4-179
Procedure ---------------------------------------------------------------------------------- 4-179
Removing the Engine Controller PCB(MF4820d) ---------------------- 4-181
Preparation -------------------------------------------------------------------------------- 4-181
Procedure ---------------------------------------------------------------------------------- 4-181
Removing the Main Controller PCB(MF4820d) ------------------------- 4-184
Preparation -------------------------------------------------------------------------------- 4-184
Procedure ---------------------------------------------------------------------------------- 4-184
Removing the Paper Leading Edge Sensor PCB(MF4820d) -------- 4-184
Preparation -------------------------------------------------------------------------------- 4-184
Procedure ---------------------------------------------------------------------------------- 4-184
Removing the Fixing Delivery/Paper Width Sensor PCB(MF4820d) ------
4-187
Preparation -------------------------------------------------------------------------------- 4-187
Procedure ---------------------------------------------------------------------------------- 4-187
Removing the Toner Sensor and Multi Pickup Sensor Unit (MF4820d) ---
4-189
Preparation -------------------------------------------------------------------------------- 4-189
Procedure ---------------------------------------------------------------------------------- 4-189
Removing the Control Panel Unit (D530) --------------------------------- 4-191
Procedure ---------------------------------------------------------------------------------- 4-191
Procedure ---------------------------------------------------------------------------------- 4-191
Removing the Drive Belt (D530) -------------------------------------------- 4-192
Preparation -------------------------------------------------------------------------------- 4-192
Procedure ---------------------------------------------------------------------------------- 4-192
Removing the Main Motor (D530) ------------------------------------------ 4-195
Preparation -------------------------------------------------------------------------------- 4-195
Procedure ---------------------------------------------------------------------------------- 4-195
Removing the Main Fan (D530) --------------------------------------------- 4-199
Preparation -------------------------------------------------------------------------------- 4-199
Procedure ---------------------------------------------------------------------------------- 4-199
Removing the Engine Controller PCB(D530) ---------------------------- 4-201
Preparation -------------------------------------------------------------------------------- 4-201
Procedure ---------------------------------------------------------------------------------- 4-201
Removing the Main Controller PCB(D530) ------------------------------- 4-204
Preparation -------------------------------------------------------------------------------- 4-204
Procedure ---------------------------------------------------------------------------------- 4-204
Removing the Paper Leading Edge Sensor PCB(D530) ------------- 4-204
Preparation -------------------------------------------------------------------------------- 4-204
Procedure ---------------------------------------------------------------------------------- 4-204
Removing the Fixing Delivery/Paper Width Sensor PCB(D530) ---- 4-207
Preparation -------------------------------------------------------------------------------- 4-207
Procedure ---------------------------------------------------------------------------------- 4-207
Removing the Multi Pickup Sensor Unit (D530)------------------------- 4-209
Preparation -------------------------------------------------------------------------------- 4-209
Procedure ---------------------------------------------------------------------------------- 4-209
Procedure ---------------------------------------------------------------------------------- 4-211
Removing the Drive Belt (MF4780w/MF4770n/MF4750/MF4730) - 4-212
Preparation -------------------------------------------------------------------------------- 4-212
Procedure ---------------------------------------------------------------------------------- 4-212
Removing the Main Motor (MF4780w/MF4770n/MF4750/MF4730) 4-215
Preparation -------------------------------------------------------------------------------- 4-215
Procedure ---------------------------------------------------------------------------------- 4-215
Removing the Engine Controller PCB (MF4780w/MF4770n/MF4750/
MF4730) --------------------------------------------------------------------------- 4-218
Preparation -------------------------------------------------------------------------------- 4-218
Procedure ---------------------------------------------------------------------------------- 4-218
Removing the Main Controller PCB (MF4780w/MF4770n/MF4750/
MF4730) --------------------------------------------------------------------------- 4-220
Preparation -------------------------------------------------------------------------------- 4-220
Procedure ---------------------------------------------------------------------------------- 4-220
Removing the FAX NCU PCB (MF4780w/MF4770n/MF4750/) ----- 4-221
Preparation -------------------------------------------------------------------------------- 4-221
Procedure ---------------------------------------------------------------------------------- 4-221
Removing the Wireless LAN PCB (MF4780w) -------------------------- 4-221
Preparation -------------------------------------------------------------------------------- 4-221
Procedure ---------------------------------------------------------------------------------- 4-221
Removing the Paper Leading Edge Sensor PCB (MF4780w/MF4770n/
MF4750/MF4730) --------------------------------------------------------------- 4-222
Preparation -------------------------------------------------------------------------------- 4-222
Procedure ---------------------------------------------------------------------------------- 4-222
Preparation -------------------------------------------------------------------------------- 4-224
Procedure ---------------------------------------------------------------------------------- 4-224
Preparation -------------------------------------------------------------------------------- 4-227
Procedure ---------------------------------------------------------------------------------- 4-227
Removing the Speaker (MF4780w/MF4770n/MF4750) --------------- 4-228
Preparation -------------------------------------------------------------------------------- 4-228
Procedure ---------------------------------------------------------------------------------- 4-228
Removing the Control Panel Unit (MF4720w/MF4712/MF4710) --- 4-230
Procedure ---------------------------------------------------------------------------------- 4-230
Removing the Drive Belt (MF4720w/MF4712/MF4710)--------------- 4-230
Preparation -------------------------------------------------------------------------------- 4-230
Procedure ---------------------------------------------------------------------------------- 4-230
Removing the Main Motor (MF4720w/MF4712/MF4710)------------- 4-233
Preparation -------------------------------------------------------------------------------- 4-233
Procedure ---------------------------------------------------------------------------------- 4-233
Removing the Engine Controller PCB (MF4720w/MF4712/MF4710) -----
4-236
Preparation -------------------------------------------------------------------------------- 4-236
Procedure ---------------------------------------------------------------------------------- 4-236
Removing the Main Controller PCB (MF4720w/MF4712/MF4710) 4-238
Preparation -------------------------------------------------------------------------------- 4-238
Procedure ---------------------------------------------------------------------------------- 4-238
Removing the Paper Leading Edge Sensor PCB (MF4720w/MF4712/
MF4710) --------------------------------------------------------------------------- 4-239
Preparation -------------------------------------------------------------------------------- 4-239
Procedure ---------------------------------------------------------------------------------- 4-239
Removing the Fixing Delivery/Paper Width Sensor PCB (MF4720w/
MF4712/MF4710) --------------------------------------------------------------- 4-241
Preparation -------------------------------------------------------------------------------- 4-241
Procedure ---------------------------------------------------------------------------------- 4-241
Removing the Toner Sensor and Multi Pickup Sensor Unit (MF4720w/
MF4712/MF4710) --------------------------------------------------------------- 4-244
Preparation -------------------------------------------------------------------------------- 4-244
Procedure ---------------------------------------------------------------------------------- 4-244
Removing the Control Panel Unit (L418S/L410/L190) ---------------- 4-246
Preparation -------------------------------------------------------------------------------- 4-246
Procedure ---------------------------------------------------------------------------------- 4-246
Removing the Drive Belt (L418S/L410/L190) --------------------------- 4-247
Preparation -------------------------------------------------------------------------------- 4-247
Procedure ---------------------------------------------------------------------------------- 4-247
Removing the Main Motor (L418S/L410/L190) ------------------------- 4-250
Preparation -------------------------------------------------------------------------------- 4-250
Procedure ---------------------------------------------------------------------------------- 4-250
Removing the Main Fan (L418S/L410/L190) ---------------------------- 4-253
Preparation -------------------------------------------------------------------------------- 4-253
Procedure ---------------------------------------------------------------------------------- 4-253
Removing the Engine Controller PCB (L418S/L410/L190) ---------- 4-256
Preparation -------------------------------------------------------------------------------- 4-256
Procedure ---------------------------------------------------------------------------------- 4-256
Removing the Main Controller PCB (L418S/L410/L190) ------------ 4-258
Preparation -------------------------------------------------------------------------------- 4-258
Procedure ---------------------------------------------------------------------------------- 4-258
Removing the FAX NCU PCB(L418S/L410/L190)---------------------- 4-259
Preparation -------------------------------------------------------------------------------- 4-259
Procedure ---------------------------------------------------------------------------------- 4-259
Removing the Wireless LAN PCB (L418S/L410/L190) --------------- 4-259
Preparation -------------------------------------------------------------------------------- 4-259
Procedure ---------------------------------------------------------------------------------- 4-259
Removing the Paper Leading Edge Sensor PCB (L418S/L410/L190) ----
4-260
Preparation -------------------------------------------------------------------------------- 4-260
Procedure ---------------------------------------------------------------------------------- 4-260
Removing the Fixing Delivery/Paper Width Sensor PCB (L418S/L410/
L190) ------------------------------------------------------------------------------- 4-262
Preparation -------------------------------------------------------------------------------- 4-262
Procedure ---------------------------------------------------------------------------------- 4-262
Removing the Toner Sensor and Multi Pickup Sensor Unit (L418S/
L410/L190) ----------------------------------------------------------------------- 4-265
Preparation -------------------------------------------------------------------------------- 4-265
Procedure ---------------------------------------------------------------------------------- 4-265
Removing the Speaker (L418S/L410/L190) ----------------------------- 4-267
Preparation -------------------------------------------------------------------------------- 4-267
Procedure ---------------------------------------------------------------------------------- 4-267
Laser Exposure System ------------------------------------------------- 4-268
Removing the Laser Scanner Unit (MF4890dn/MF4880dw) --------- 4-268
Preparation -------------------------------------------------------------------------------- 4-268
Procedure ---------------------------------------------------------------------------------- 4-268
Removing the Laser Scanner Unit (MF4870dn/4830d) --------------- 4-269
Preparation -------------------------------------------------------------------------------- 4-269
Procedure ---------------------------------------------------------------------------------- 4-269
Removing the Laser Scanner Unit (MF4820d) -------------------------- 4-271
Preparation -------------------------------------------------------------------------------- 4-271
Procedure ---------------------------------------------------------------------------------- 4-271
Removing the Laser Scanner Unit (D530) -------------------------------- 4-272
Preparation -------------------------------------------------------------------------------- 4-272
Procedure ---------------------------------------------------------------------------------- 4-272
Removing the Laser Scanner Unit (MF4780w/MF4770n/MF4750/
MF4730) --------------------------------------------------------------------------- 4-275
Preparation -------------------------------------------------------------------------------- 4-275
Procedure ---------------------------------------------------------------------------------- 4-275
Removing the Laser Scanner Unit (MF4720w/MF4712/MF4710) -- 4-276
Preparation -------------------------------------------------------------------------------- 4-276
Procedure ---------------------------------------------------------------------------------- 4-276
Removing the Laser Scanner Unit (L418S/L410/L190) --------------- 4-278
Preparation -------------------------------------------------------------------------------- 4-278
Procedure ---------------------------------------------------------------------------------- 4-278
Image Formation System ----------------------------------------------- 4-281
Removing the Transfer Roller (MF4890dw/MF4880dw) -------------- 4-281
Procedure ---------------------------------------------------------------------------------- 4-281
Removing the Transfer Roller (MF4870dn/MF4830d) ----------------- 4-282
Procedure ---------------------------------------------------------------------------------- 4-282
Removing the Transfer Roller (MF4820d) -------------------------------- 4-283
Procedure ---------------------------------------------------------------------------------- 4-283
Removing the Transfer Roller (D530) -------------------------------------- 4-284
Procedure ---------------------------------------------------------------------------------- 4-284
Removing the Transfer Roller (MF4780w/MF4770n/MF4750/MF4730) --
4-285
Procedure ---------------------------------------------------------------------------------- 4-285
Removing the Transfer Roller (MF4720w/MF4712/MF4710) -------- 4-286
Procedure ---------------------------------------------------------------------------------- 4-286
Removing the Transfer Roller (L418S/L410/L190) --------------------- 4-287
Procedure ---------------------------------------------------------------------------------- 4-287
Fixing System -------------------------------------------------------------- 4-289
Removing the Fixing Assembly (MF4890dw/MF4880dw) ------------ 4-289
Preparation -------------------------------------------------------------------------------- 4-289
Procedure ---------------------------------------------------------------------------------- 4-289
Removing the Fixing Assembly(MF4870dn/MF4830d) ---------------- 4-292
Preparation -------------------------------------------------------------------------------- 4-292
Procedure ---------------------------------------------------------------------------------- 4-292
Removing the Fixing Assembly (MF4820d)) ----------------------------- 4-295
Preparation -------------------------------------------------------------------------------- 4-295
Procedure ---------------------------------------------------------------------------------- 4-295
Removing the Fixing Assembly (D530) ------------------------------------ 4-298
Preparation -------------------------------------------------------------------------------- 4-298
Procedure ---------------------------------------------------------------------------------- 4-298
Removing the Fixing Assembly (MF4780w/MF4770n/MF4750/MF4730)
4-301
Preparation -------------------------------------------------------------------------------- 4-301
Procedure ---------------------------------------------------------------------------------- 4-301
Removing the Fixing Assembly (MF4720w/MF4712/MF4710) ------ 4-305
Preparation -------------------------------------------------------------------------------- 4-305
Procedure ---------------------------------------------------------------------------------- 4-305
Removing the Fixing Assembly (L418S/L410/L190) ------------------- 4-308
Preparation -------------------------------------------------------------------------------- 4-308
Procedure ---------------------------------------------------------------------------------- 4-308
Pickup And Feeding System --------------------------------------------4-311
Removing the Pickup Unit (MF4890dw/MF4880dw) ------------------- 4-311
Preparation -------------------------------------------------------------------------------- 4-311
Procedure ---------------------------------------------------------------------------------- 4-311
Removing the Pickup Tray Unit (MF4890dw/MF4880dw) ------------ 4-314
Preparation -------------------------------------------------------------------------------- 4-314
Procedure ---------------------------------------------------------------------------------- 4-314
Removing the Pickup Roller (MF4890dw/MF4880dw) ---------------- 4-316
Preparation -------------------------------------------------------------------------------- 4-316
Procedure ---------------------------------------------------------------------------------- 4-316
Removing the Pickup Solenoid (MF4890dw/MF4880dw) ------------ 4-317
Preparation -------------------------------------------------------------------------------- 4-317
Procedure ---------------------------------------------------------------------------------- 4-317
Removing the Separation Pad (MF4890dw/MF4880dw) ------------- 4-319
Procedure ---------------------------------------------------------------------------------- 4-319
Removing the Duplex Feed Unit (MF4890dw/MF4880dw) ----------- 4-320
Preparation -------------------------------------------------------------------------------- 4-320
Procedure ---------------------------------------------------------------------------------- 4-320
Removing the Duplex Solenoid (MF4890dw/MF4880dw) ------------ 4-321
Preparation -------------------------------------------------------------------------------- 4-321
Procedure ---------------------------------------------------------------------------------- 4-321
Removing the Pickup Unit (MF4870dn/MF4830d) --------------------- 4-323
Preparation -------------------------------------------------------------------------------- 4-323
Procedure ---------------------------------------------------------------------------------- 4-323
Removing the Pickup Tray Unit (MF4870dn/MF4830d) --------------- 4-327
Preparation -------------------------------------------------------------------------------- 4-327
Procedure ---------------------------------------------------------------------------------- 4-327
Removing the Pickup Roller (MF4870dn/MF4830d) ------------------- 4-329
Preparation -------------------------------------------------------------------------------- 4-329
Procedure ---------------------------------------------------------------------------------- 4-329
Removing the Pickup Solenoid (MF4870dn/MF4830d) --------------- 4-330
Preparation -------------------------------------------------------------------------------- 4-330
Procedure ---------------------------------------------------------------------------------- 4-330
Procedure ---------------------------------------------------------------------------------- 4-332
Removing the Duplex Feed Unit (MF4870dn/MF4830d) ------------- 4-333
Preparation -------------------------------------------------------------------------------- 4-333
Procedure ---------------------------------------------------------------------------------- 4-333
Removing the Duplex Solenoid (MF4870dn/MF4830d) --------------- 4-334
Preparation -------------------------------------------------------------------------------- 4-334
Procedure ---------------------------------------------------------------------------------- 4-334
Removing the Pickup Unit (MF4820d) ------------------------------------- 4-336
Preparation -------------------------------------------------------------------------------- 4-336
Procedure ---------------------------------------------------------------------------------- 4-336
Removing the Pickup Tray Unit (MF4820d) ------------------------------ 4-339
Preparation -------------------------------------------------------------------------------- 4-339
Procedure ---------------------------------------------------------------------------------- 4-339
Removing the Pickup Roller (MF4820d) ---------------------------------- 4-341
Preparation -------------------------------------------------------------------------------- 4-341
Procedure ---------------------------------------------------------------------------------- 4-341
Removing the Pickup Solenoid (MF4820d) ------------------------------ 4-342
Preparation -------------------------------------------------------------------------------- 4-342
Procedure ---------------------------------------------------------------------------------- 4-342
Removing the Separation Pad (MF4820d) ------------------------------- 4-345
Procedure ---------------------------------------------------------------------------------- 4-345
Removing the Duplex Feed Unit (MF4820d)----------------------------- 4-345
Preparation -------------------------------------------------------------------------------- 4-345
Procedure ---------------------------------------------------------------------------------- 4-345
Removing the Duplex Solenoid (MF4820d) ------------------------------ 4-347
Preparation -------------------------------------------------------------------------------- 4-347
Procedure ---------------------------------------------------------------------------------- 4-347
Removing the Pickup Unit (D530) ------------------------------------------ 4-349
Preparation -------------------------------------------------------------------------------- 4-349
Procedure ---------------------------------------------------------------------------------- 4-349
Removing the Pickup Tray Unit (D530) ----------------------------------- 4-352
Preparation -------------------------------------------------------------------------------- 4-352
Procedure ---------------------------------------------------------------------------------- 4-352
Removing the Pickup Roller (D530) ---------------------------------------- 4-354
Preparation -------------------------------------------------------------------------------- 4-354
Procedure ---------------------------------------------------------------------------------- 4-354
Removing the Pickup Solenoid (D530) ------------------------------------ 4-355
Preparation -------------------------------------------------------------------------------- 4-355
Procedure ---------------------------------------------------------------------------------- 4-355
Removing the Separation Pad (D530) ------------------------------------- 4-357
Procedure ---------------------------------------------------------------------------------- 4-357
Removing the Duplex Feed Unit (D530) ---------------------------------- 4-358
Preparation -------------------------------------------------------------------------------- 4-358
Procedure ---------------------------------------------------------------------------------- 4-358
Removing the Duplex Solenoid (D530) ----------------------------------- 4-359
Preparation -------------------------------------------------------------------------------- 4-359
Procedure ---------------------------------------------------------------------------------- 4-359
Removing the Pickup Unit (MF4780w/MF4770n/MF4750/MF4730) -------
4-362
Preparation -------------------------------------------------------------------------------- 4-362
Procedure ---------------------------------------------------------------------------------- 4-362
Removing the Pickup Tray Unit (MF4780w/MF4770n/MF4750/MF4730)
4-365
Preparation -------------------------------------------------------------------------------- 4-365
Procedure ---------------------------------------------------------------------------------- 4-365
Removing the Pickup Roller (MF4780w/MF4770n/MF4750/MF4730) ----
4-367
Preparation -------------------------------------------------------------------------------- 4-367
Procedure ---------------------------------------------------------------------------------- 4-367
Removing the Pickup Solenoid (MF4780w/MF4770n/MF4750/MF4730)
4-368
Preparation -------------------------------------------------------------------------------- 4-368
Procedure ---------------------------------------------------------------------------------- 4-368
Removing the Separation Pad (MF4780w/MF4770n/MF4750/MF4730) -
4-371
Procedure ---------------------------------------------------------------------------------- 4-371
Removing the Pickup Unit (MF4720w/MF4712/MF4710) ------------ 4-371
Preparation -------------------------------------------------------------------------------- 4-371
Procedure ---------------------------------------------------------------------------------- 4-371
Removing the Pickup Tray Unit (MF4720w/MF4712/MF4710) ------ 4-374
Preparation -------------------------------------------------------------------------------- 4-374
Procedure ---------------------------------------------------------------------------------- 4-374
Removing the Pickup Roller (MF4720w/MF4712/MF4710) ---------- 4-376
Preparation -------------------------------------------------------------------------------- 4-376
Procedure ---------------------------------------------------------------------------------- 4-376
Removing the Pickup Solenoid (MF4720w/MF4712/MF4710) ------ 4-377
Preparation -------------------------------------------------------------------------------- 4-377
Procedure ---------------------------------------------------------------------------------- 4-377
Removing the Separation Pad (MF4720w/MF4712/MF4710) ------- 4-380
Procedure ---------------------------------------------------------------------------------- 4-380
Removing the Pickup Unit (L418S/L410/L190)-------------------------- 4-380
Preparation -------------------------------------------------------------------------------- 4-380
Procedure ---------------------------------------------------------------------------------- 4-380
Removing the Pickup Tray Unit (L418S/L410/L190) ------------------- 4-383
Preparation -------------------------------------------------------------------------------- 4-383
Procedure ---------------------------------------------------------------------------------- 4-383
Removing the Pickup Roller (L418S/L410/L190) ----------------------- 4-385
Preparation -------------------------------------------------------------------------------- 4-385
Procedure ---------------------------------------------------------------------------------- 4-385
Removing the Pickup Solenoid (L418S/L410/L190) ------------------- 4-386
Preparation -------------------------------------------------------------------------------- 4-386
Procedure ---------------------------------------------------------------------------------- 4-386
Removing the Separation Pad (L418S/L410/L190) -------------------- 4-389
Procedure ---------------------------------------------------------------------------------- 4-389
Removing the Duplex Feed Unit (L418S/L410/L190)------------------ 4-389
Preparation -------------------------------------------------------------------------------- 4-389
Procedure ---------------------------------------------------------------------------------- 4-389
Removing the Duplex Solenoid (L418S/L410/L190) ------------------- 4-391
Preparation -------------------------------------------------------------------------------- 4-391
Procedure ---------------------------------------------------------------------------------- 4-391
5 Adjustment
Mechanical Adjustment ------------------------------------------------------5-2
Conrming Nip Width ------------------------------------------------------------- 5-2
6 Troubleshooting
Test Print ------------------------------------------------------------------------6-2
Test Print Function ----------------------------------------------------------------- 6-2
Troubleshooting Items ------------------------------------------------------6-3
Image Faults ------------------------------------------------------------------------ 6-3
Smudged/Streaked ------------------------------------------------------------------------- 6-3
Version Upgrade --------------------------------------------------------------6-4
Overview ----------------------------------------------------------------------------- 6-4
Preparation -------------------------------------------------------------------------- 6-4
System Requirements --------------------------------------------------------------------- 6-4
Preparation ----------------------------------------------------------------------------------- 6-5
Downloading System Software ------------------------------------------------- 6-5
Log Collector -------------------------------------------------------------------6-7
OutLine ------------------------------------------------------------------------------- 6-7
Scope of Application ----------------------------------------------------------------------- 6-7
What to Prepare ----------------------------------------------------------------------------- 6-7
Operation Procedure----------------------------------------------------------------------- 6-7
Troubleshooting ----------------------------------------------------------------------------- 6-8
7 Error Codes
Overview ------------------------------------------------------------------------7-2
Error Codes ---------------------------------------------------------------------7-3
8 Service Mode
Overview ------------------------------------------------------------------------8-2
Entering Service Mode. ---------------------------------------------------------- 8-2
Service Mode Menu --------------------------------------------------------------- 8-2
Screen ow of Service mode -----------------------------------------------------------------
COPIER -------------------------------------------------------------------------8-3
DISPLAY ----------------------------------------------------------------------------- 8-3
VERSION ------------------------------------------------------------------------------------- 8-3
CCD -------------------------------------------------------------------------------------------- 8-3
I/O -------------------------------------------------------------------------------------- 8-3
R-CON ----------------------------------------------------------------------------------------- 8-3
ADJUST ------------------------------------------------------------------------------ 8-4
ADJ-XY ---------------------------------------------------------------------------------------- 8-4
CCD -------------------------------------------------------------------------------------------- 8-4
FUNCTION -------------------------------------------------------------------------- 8-5
CLEAR ---------------------------------------------------------------------------------------- 8-5
MISC-R ---------------------------------------------------------------------------------------- 8-5
MISC-P ---------------------------------------------------------------------------------------- 8-5
SYSTEM -------------------------------------------------------------------------------------- 8-5
PARAM ---------------------------------------------------------------------------------------- 8-5
SPLMAN -------------------------------------------------------------------------------------- 8-6
OPTION ------------------------------------------------------------------------------ 8-6
BODY ------------------------------------------------------------------------------------------ 8-6
ACC -------------------------------------------------------------------------------------------- 8-6
SERIAL ---------------------------------------------------------------------------------------- 8-6
COUNTER --------------------------------------------------------------------------- 8-7
TOTAL ----------------------------------------------------------------------------------------- 8-7
PICK-UP -------------------------------------------------------------------------------------- 8-7
FEEDER -------------------------------------------------------------------------------------- 8-7
JAM -------------------------------------------------------------------------------------------- 8-7
FEEDER -------------------------------------------------------------------------8-8
ADJUST ------------------------------------------------------------------------------ 8-8
FUNCTION -------------------------------------------------------------------------- 8-8
FAX -------------------------------------------------------------------------------8-9
List of SSSW ------------------------------------------------------------------------ 8-9
List of Menu ------------------------------------------------------------------------8-10
List of NUM ------------------------------------------------------------------------- 8-11
List of NCU ------------------------------------------------------------------------- 8-11
TONE/PULSE ------------------------------------------------------------------------------ 8-11
TONE/PULSE ------------------------------------------------------------------------------ 8-11
2nd DIAL TONE ----------------------------------------------------------------------------8-12
BUSY TONE0 -------------------------------------------------------------------------------8-12
BUSY TONE1 -------------------------------------------------------------------------------8-12
REORDER TONE -------------------------------------------------------------------------8-13
AUTO RX ------------------------------------------------------------------------------------8-13
CNG DETECT ------------------------------------------------------------------------------8-13
RKEY -----------------------------------------------------------------------------------------8-13
PBX DIAL TONE ---------------------------------------------------------------------------8-14
PBX BUSY TONE -------------------------------------------------------------------------8-14
TESTMODE ------------------------------------------------------------------ 8-15
SYSTEM ----------------------------------------------------------------------------8-15
DRAM -----------------------------------------------------------------------------------------8-15
SPEAKER -----------------------------------------------------------------------------------8-15
SCAN --------------------------------------------------------------------------------8-15
ADJUST --------------------------------------------------------------------------------------8-15
SENSOR -------------------------------------------------------------------------------------8-15
ADFTEST ------------------------------------------------------------------------------------8-16
BOOKFEED ---------------------------------------------------------------------------------8-16
FAX -----------------------------------------------------------------------------------8-16
MODEM --------------------------------------------------------------------------------------8-16
FACULTY ------------------------------------------------------------------------------------8-17
PANEL ----------------------------------------------------------------------------------------8-17
NETWORK -------------------------------------------------------------------------8-17
SSSW -----------------------------------------------------------------------------------------8-17
Appendix
Service Tools -------------------------------------------------------------------9-2
Solvent/Oil List -----------------------------------------------------------------9-3
General Circuit Diagram -----------------------------------------------------9-4
MF4890dw/MF4880dw/MF4870dn ----------------------------------------------------- 9-4
MF4830d/MF4820d ------------------------------------------------------------------------ 9-5
MF4780w/MF4770n/MF4750 ------------------------------------------------------------ 9-6
MF4730 --------------------------------------------------------------------------------------- 9-7
MF4720w/MF4712/MF4710-------------------------------------------------------------- 9-8
L418S/L410/L190 --------------------------------------------------------------------------- 9-9
D530 ------------------------------------------------------------------------------------------9-10
General Timing Chart ------------------------------------------------------ 9-11
0
0
0-2
0-2
Safety Precautions > Laser Safety > Handling Laser Scanner Unit
Safety Precautions > Laser Safety > Handling Laser Scanner Unit
CDRH Provisions
Food and Drug CDRH (Center for Devices and Radiological Health) under FDA (Food and
Drug Administration) enforced provisions of the section for laser and laser products on August
2, 1976. These provisions are applicable to all laser products manufactured or assembled
after August 1, 1976 and allow only products certied their compliance with the provisions
to market in the US. Each product shall have afxed the applicable label as shown below to
follow the labeling requirements prescribed in CDRH provisions.
Note that the wording included in labels is different depending on laser product
classications.
F-0-1
Laser Safety
About Laser Beams
Laser radiation may be hazardous to human. The laser scanner unit mounted in this device is
sealed in the protective housing and the external cover to prevent laser beams from leaking
to the environment. As long as the device is operated under normal conditions, users are
safely guarded from laser leaks.
Handling Laser Scanner Unit
Before providing service works for the laser scanner unit and its peripherals, ensure to turn
off the power of the device.
Any cover with potential dangers of laser beam reection has afxed the caution label at the
position shown in the gure below.
F-0-2
0
0
0-3
0-3
Safety Precautions > Notes on Assembly/Disassembly
Safety Precautions > Notes on Assembly/Disassembly
Toner Safety
About Toner
Toner is a nontoxic matter composed of plastic, iron and a trace of pigments.
Never throw toner in ames to avoid explosion.
Handling Adhered Toner
• Use dry tissue paper to wipe off toner adhered to skin or clothes and wash in water.
• Never use warm water for cleaning up toner to prevent toner particles from being able to
soak into bers permanently.
• Toner particles are reactive with vinyl polymers. Avoid contacting these materials.
Notes on Handling Lithium Battery
Replacing with wrong battery types may cause explosion.
Follow instructions to dispose used batteries properly.
Notes on Assembly/Disassembly
Follow the items below to assemble/disassemble the device.
1. Disconnect the power plug to avoid any potential dangers during assembling/disassembling
works.
2. If not specially instructed, reverse the order of disassembly to reinstall.
3. Ensure to use the right screw type (length, diameter, etc.) at the right position when
assembling.
4. To keep electric conduction, binding screws with washers are used to attach the grounding
wire and the varistor. Ensure to use the right screw type when assembling.
5. Unless it is specially needed, do not operate the device with some parts removed.
6. Never remove the paint-locked screws when disassembling.
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