Ricoh LI-MF1 M126 Quick start guide

Model LI-MF1
Machine Codes:
M126/M127/M128
Field Service Manual
26 August, 2011

Safety Notices
The following laser notice labels may be attached to this machine.
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Symbols, Abbreviations and Trademarks
This manual uses several symbols and abbreviations. The meaning of those symbols and abbreviations
are as follows:
See or Refer to
Clip ring
Screw
Connector
Clamp
E-ring
SEF Short Edge Feed
LEF Long Edge Feed
Trademarks
Microsoft®, Windows®, and MS-DOS® are registered trademarks of Microsoft Corporation in the
United States and /or other countries.
PostScript® is a registered trademark of Adobe Systems, Incorporated.
PCL® is a registered trademark of Hewlett-Packard Company.
Ethernet® is a registered trademark of Xerox Corporation.
PowerPC® is a registered trademark of International Business Machines Corporation.
Other product names used herein are for identification purposes only and may be trademarks of their
respective companies. We disclaim any and all rights involved with those marks.
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Acronyms
ac Alternating Current
ACM Autocompensator Mechanism (or paper feed)
ADF Automatic document feeder
AFE Analog front end
AIO All-In-One
APS Automatic Paper Size
ASIC Application Specific Integrated Circuit
BLDC Brushless DC Motor
BOR Black Only Retract
CCD Charge-Couple Device
CCFL Cold Cathode Fluorescent Lamp
CCW Counter clockwise
CDB Command Descriptor Blocks
CMYK Cyan yellow magenta black
CPU Central processing unit
CRC Cyclic redundancy check
CRU Customer Replaceable Unit
CSU Customer Setup
CW Clockwise
DBCS Double byte character set
dc Direct Current
DIMM Dual Inline Memory Module
DLE Downloadable emulator
DRAM Dynamic random access memory
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DVM Digital multimeter
ECC Error correcting code
ECM Error correction mode
EDO Enhanced Data Out
EEPROM Electrical Erasable Programmable Read-Only Memory
ENA External Network Adapter
EOL End of line
EP Electrophotographic process
EPROM Erasable programmable read-only memory
ESD Electrostatic Discharge
FB Flatbed
FD Facedown
FRU Field replaceable unit
FU Face up
GB Gigabyte
GFI Ground Fault Interrupter
GHz Gigahertz
HBP Host Based Printing
HCF High-capacity feeder
HCIT High-capacity Input Tray
HCOF High-Capacity Output Finisher
HCPF High-capacity feeder
HTML Hypertext markup language
HV High Voltage
HVPS High voltage power supply
HVU High voltage unit
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Hz Hertz
INTL International
ITC Internal Tray Card
ITU Image Transfer Unit
K Black (Key)
LAN Local area network
LASER Light amplification by stimulated emission of radiation
LCD Liquid crystal display
LCM Liquid Crystal Module
LD Laser Diode
LED Light emitting diode
LEF Long edge feed
LSU Laser Scanning Unit
LV Low Voltage
LVPS Low voltage power supply
MB Megabyte
MDC Motor Driver Control
MFD Multifunction Device
MFP Multifunction Printer
MH Message handling
MIF Motor interface
mm millimeter
MMR Modified modified read
MPF Multipurpose feeder
MR Modem ready
MROM Masked Read Only Memory
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MS Microswitch
NAND NAND (usage: NAND gate)
NVM Nonvolatile Memory
NVRAM Nonvolatile Random Access Memory
OCF Operator correctable failure
OEM Original Equipment Manufacturer
OHP Overhead projector
OPC Optical photo conductor
OPT Optical Sensor
PC Photoconductor
PDF Portable Document Format
PICS Problem isolation charts
PIN Personal identification number
PIXEL Picture element
PJL Printer Job Language
POR Power-on reset
POST Power-on self test
PPDS Personal Printer Data Stream
ppm Pages per minute
PQET Print Quality Enhancement Technology
PRC Peoples' Republic of China
PSC Parallel Synchronous Communications
PSD Position Sensing Device
PSO Participating Standards Organization
PWM Pulse Width Modulation
RAM Random access memory
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RFID Radio frequency identification
RH Relative humidity
RIP Raster image processor
ROM Read-only memory
ROS Read-only storage
RPM Revolutions Per Minute
SCC Scanner Control Card
SDRAM Synchronous Dynamic Random Access Memory
SEF Short edge feed
SIMM Single Inline Memory Module
SOL Solenoid
SOS Start of scan
SRAM Static random access memory
TAR Toner Add Roll
TPS Toner Patch Sensing
TTM Tandem Tray Module
TVOC Total Volatile Organic Compound
UAT Universally Adjustable Tray
UPR Used Parts Return
USB Universal Serial Bus
V Volts
V ac Volts alternating current
V dc Volts direct current
VOIP Voice over internet protocol
VOM Volt Ohmmeter
VTB Vacuum Transport Belt
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XPS XML Paper Specification
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TABLE OF CONTENTS
Safety Notices.....................................................................................................................................................1
Symbols, Abbreviations and Trademarks.........................................................................................................9
Trademarks.....................................................................................................................................................9
Acronyms......................................................................................................................................................10
1. Product Information
General Information.........................................................................................................................................23
Locations...........................................................................................................................................................24
Front View.....................................................................................................................................................24
Rear View.....................................................................................................................................................25
Overview..........................................................................................................................................................26
Main Boards.....................................................................................................................................................28
Controller Board..........................................................................................................................................28
Engine Board................................................................................................................................................29
Controller and Engine Board Connector Pin Values.................................................................................29
2. Installation
Installation.........................................................................................................................................................35
3. Preventive Maintenance
Safety Inspection Guide..................................................................................................................................37
Lubrication Specifications................................................................................................................................38
4. Replacement and Adjustment
Handling ESD-Sensitive Parts..........................................................................................................................39
Removal Procedures........................................................................................................................................40
ACM Pick Tire Roller Removal....................................................................................................................40
Card Reader Removal.................................................................................................................................42
Upper and Lower Card Reader Cover Removal.......................................................................................43
Card Reader Cable Removal.....................................................................................................................43
Controller Board Removal..........................................................................................................................44
Controller Board Shield...............................................................................................................................48
Controller Board Cage................................................................................................................................50
Controller Board Fan...................................................................................................................................50
Engine Board Removal................................................................................................................................51
Cover Open Sensor.....................................................................................................................................52
Door Mount Removal..................................................................................................................................52
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Duplex Removal...........................................................................................................................................54
Duplex/Main Motor Gear Drive Interface Removal................................................................................55
Fan Removal.................................................................................................................................................59
Front Access Door Removal........................................................................................................................59
Fuser Removal..............................................................................................................................................62
Scanner Front Cover Removal....................................................................................................................65
Left Side Cover Removal.............................................................................................................................66
Front Door Access Cover Removal.............................................................................................................68
Lower Front Cover Removal........................................................................................................................69
LVPS/HVPS Removal...................................................................................................................................70
Main Motor Gear Drive Removal..............................................................................................................72
Manual Feed Clutch Removal....................................................................................................................74
Manual Feed Solenoid Removal................................................................................................................76
Media ACM ASM Feeder Removal...........................................................................................................78
Media Feed Clutch with Cable Removal...................................................................................................81
Media Manual Input Sensor.......................................................................................................................83
Multipurpose Feeder Removal....................................................................................................................86
Multipurpose Feeder (MPF) Feed Clutch Removal...................................................................................88
Nameplate Cover Removal........................................................................................................................90
Operator Panel Keypad Removal..............................................................................................................90
Operator Panel Display Removal...............................................................................................................91
Display Bezel...............................................................................................................................................92
UICC Cable Removal..................................................................................................................................93
USB Cable Mount Bracket Removal..........................................................................................................94
Operator Panel Support Removal..............................................................................................................95
Display Rotation Support Removal.............................................................................................................95
Left Rear Frame Assembly Removal............................................................................................................96
Right Rear Frame Assembly Removal.........................................................................................................97
Tub Assembly Removal................................................................................................................................98
Paper Input and Duplex Sensor Assembly Removal.................................................................................99
Printhead Removal.....................................................................................................................................100
Mid rear Cover Removal..........................................................................................................................101
Rear Door and Lower Rear Cover Removal............................................................................................102
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Rear Exit Guide Assembly with Sensor and Reversing Solenoid Removal...........................................103
Right Side Cover Removal........................................................................................................................104
Toner Level Sensor Removal.....................................................................................................................106
Top Cover Assembly Removal.................................................................................................................107
Transfer Roll Removal................................................................................................................................107
Upper Front Guide Assembly Removal...................................................................................................108
Wear Strip (Tray 1 and 250-Sheet Tray 2) Removal............................................................................109
Wear Strip (550-Sheet Tray 2) Removal................................................................................................110
Imaging Component Removals....................................................................................................................111
ADF Unit Removal.....................................................................................................................................111
Flatbed Removal........................................................................................................................................111
Scanner Assembly Removal.....................................................................................................................113
ADF Separator Pad...................................................................................................................................119
ADF Separator Roll Assembly..................................................................................................................121
Kickstand Removal....................................................................................................................................121
Output Bin LED and Lens Removal...........................................................................................................122
ADF Cable Removal..................................................................................................................................123
Left Scanner Cover Removal....................................................................................................................124
Right Scanner Cover Removal..................................................................................................................125
Option Board Installation and Removal......................................................................................................127
Lifting the Scanner to the Up Position.......................................................................................................127
Installing an Internal Solutions Port (ISP).................................................................................................128
Printer Hard Disk Removal........................................................................................................................132
Printer Hard Disk Installation on an ISP...................................................................................................134
Printer Hard Disk Installation Directly on the Controller Board.............................................................135
Fax Card Installation.................................................................................................................................137
5. System Maintenance
Accessing Service Menus.............................................................................................................................141
Configuration Menu (CONFIG MENU)......................................................................................................142
Available Menus.......................................................................................................................................142
Maintenance Count Value (Maint Cnt Value)........................................................................................144
Reset Maintenance Counter.....................................................................................................................144
Reset Photoconductor Maintenance Counter (Reset PC Cnt)................................................................145
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