Kyocera Mita KM-1810 User manual

SERVICE
MANUAL
Published in July ’01
2A170762
Revision 2
KM-1510/1810

CAUTION
DANGER OF EXPLOSION IF BATTERY IS INCORRECTLY REPLACED. REPLACE ONLY WITH
THE SAME OR EQUIVALENT TYPE RECOMMENDED BY THE MANUFACTURER. DISPOSE OF
USED BATTERIES ACCORDING TO THE MANUFACTURER’S INSTRUCTIONS.
ATTENTION
IL Y A DANGER D’EXPLOSION S’IL Y A REMPLACEMENT INCORRECT DE LA BATTERIE.
REMPLACER UNIQUEMENT AVEC UNE BATTERIE DU MÊME TYPE OU D’UN TYPE REC-
OMMANDÉ PAR LE CONSTRUCTEUR. METTRE AU RÉBUT LES BATTERIES USAGÉES
CONFORMÉMENT AUX INSTRUCTIONS DU FABRICANT.

Safety precautions
This booklet provides safety warnings and precautions for our service personnel to ensure the safety of
their customers, their machines as well as themselves during maintenance activities. Service personnel
are advised to read this booklet carefully to familiarize themselves with the warnings and precautions
described here before engaging in maintenance activities.

indicates that action is required. The specific action required is shown inside the symbol.
General action required.
Remove the power plug from the wall outlet.
Always ground the copier.
Safety warnings and precautions
Various symbols are used to protect our service personnel and customers from physical danger and
to prevent damage to their property. These symbols are described below:
DANGER: High risk of serious bodily injury or death may result from insufficient attention to or incorrect
compliance with warning messages using this symbol.
WARNING:Serious bodily injury or death may result from insufficient attention to or incorrect compliance
with warning messages using this symbol.
CAUTION:Bodily injury or damage to property may result from insufficient attention to or incorrect
compliance with warning messages using this symbol.
Symbols
The triangle ( ) symbol indicates a warning including danger and caution. The specific point
of attention is shown inside the symbol.
General warning.
Warning of risk of electric shock.
Warning of high temperature.
indicates a prohibited action. The specific prohibition is shown inside the symbol.
General prohibited action.
Disassembly prohibited.

1. Installation Precautions
WARNING
• Do not use a power supply with a voltage other than that specified. Avoid multiple connections to
one outlet: they may cause fire or electric shock. When using an extension cable, always check
that it is adequate for the rated current. ............................................................................................
• Connect the ground wire to a suitable grounding point. Not grounding the copier may cause fire or
electric shock. Connecting the earth wire to an object not approved for the purpose may cause
explosion or electric shock. Never connect the ground cable to any of the following: gas pipes,
lightning rods, ground cables for telephone lines and water pipes or faucets not approved by the
proper authorities. .............................................................................................................................
CAUTION:
• Do not place the copier on an infirm or angled surface: the copier may tip over, causing injury. .....
• Do not install the copier in a humid or dusty place. This may cause fire or electric shock. ..............
• Do not install the copier near a radiator, heater, other heat source or near flammable material.
This may cause fire. ..........................................................................................................................
• Allow sufficient space around the copier to allow the ventilation grills to keep the machine as cool
as possible. Insufficient ventilation may cause heat buildup and poor copying performance. ..........
• Always handle the machine by the correct locations when moving it. ..............................................
• Always use anti-toppling and locking devices on copiers so equipped. Failure to do this may
cause the copier to move unexpectedly or topple, leading to injury..................................................
• Avoid inhaling toner or developer excessively. Protect the eyes. If toner or developer is
accidentally ingested, drink a lot of water to dilute it in the stomach and obtain medical attention
immediately. If it gets into the eyes, rinse immediately with copious amounts of water and obtain
medical attention. ..............................................................................................................................
• Advice customers that they must always follow the safety warnings and precautions in the copier’s
instruction handbook. ........................................................................................................................

• Check that the power cable covering is free of damage. Check that the power plug is dust-free. If
it is dirty, clean it to remove the risk of fire or electric shock. ............................................................
• Never attempt to disassemble the optical unit in machines using lasers. Leaking laser light may
damage eyesight. ..............................................................................................................................
• Handle the charger sections with care. They are charged to high potentials and may cause
electric shock if handled improperly. .................................................................................................
CAUTION
• Wear safe clothing. If wearing loose clothing or accessories such as ties, make sure they are
safely secured so they will not be caught in rotating sections...........................................................
• Use utmost caution when working on a powered machine. Keep away from chains and belts. .......
• Handle the fixing section with care to avoid burns as it can be extremely hot. .................................
• Check that the fixing unit thermistor, heat and press rollers are clean. Dirt on them can cause
abnormally high temperatures...........................................................................................................
• Do not remove the ozone filter, if any, from the copier except for routine replacement. ...................
2. Precautions for Maintenance
WARNING
• Always remove the power plug from the wall outlet before starting machine disassembly...............
• Always follow the procedures for maintenance described in the service manual and other related
brochures. .........................................................................................................................................
• Under no circumstances attempt to bypass or disable safety features including safety
mechanisms and protective circuits. .................................................................................................
• Always use parts having the correct specifications. ..........................................................................
• Always use the thermostat or thermal fuse specified in the service manual or other related
brochure when replacing them. Using a piece of wire, for example, could lead to fire or other
serious accident. ...............................................................................................................................
• When the service manual or other serious brochure specifies a distance or gap for installation of a
part, always use the correct scale and measure carefully. ...............................................................
• Always check that the copier is correctly connected to an outlet with a ground connection. ............

• Do not pull on the AC power cord or connector wires on high-voltage components when removing
them; always hold the plug itself. ......................................................................................................
• Do not route the power cable where it may be stood on or trapped. If necessary, protect it with a
cable cover or other appropriate item. ..............................................................................................
• Treat the ends of the wire carefully when installing a new charger wire to avoid electric leaks........
• Remove toner completely from electronic components. ...................................................................
• Run wire harnesses carefully so that wires will not be trapped or damaged. ...................................
• After maintenance, always check that all the parts, screws, connectors and wires that were
removed, have been refitted correctly. Special attention should be paid to any forgotten
connector, trapped wire and missing screws. ..................................................................................
• Check that all the caution labels that should be present on the machine according to the
instruction handbook are clean and not peeling. Replace with new ones if necessary. ...................
• Handle greases and solvents with care by following the instructions below: ....................................
· Use only a small amount of solvent at a time, being careful not to spill. Wipe spills off completely.
· Ventilate the room well while using grease or solvents.
· Allow applied solvents to evaporate completely before refitting the covers or turning the main
switch on.
· Always wash hands afterwards.
• Never dispose of toner or toner bottles in fire. Toner may cause sparks when exposed directly to
fire in a furnace, etc...........................................................................................................................
• Should smoke be seen coming from the copier, remove the power plug from the wall outlet
immediately. ......................................................................................................................................
3. Miscellaneous
WARNING
• Never attempt to heat the drum or expose it to any organic solvents such as alcohol, other than
the specified refiner; it may generate toxic gas. ................................................................................

1-1-1
2A1/2
CONTENTS
1-1 Specifications
1-1-1 Specifications ....................................................................................................................................... 1-1-1
1-1-2 Parts names ......................................................................................................................................... 1-1-3
(1) Copier ............................................................................................................................................. 1-1-3
(2) Operation panel .............................................................................................................................. 1-1-4
1-1-3 Machine cross section .......................................................................................................................... 1-1-5
1-1-4 Drive system ........................................................................................................................................ 1-1-6
(1) Drive system 1 (drive motor drive train).......................................................................................... 1-1-6
(2) Drive system 2 (scanner motor drive train)..................................................................................... 1-1-7
(3) Drive system 3 (original feed motor (18 cpm copier only) drive train) ............................................ 1-1-8
(4) Drive system 4 (ST feed motor (optional) drive train) ..................................................................... 1-1-8
1-2 Handling Precautions
1-2-1 Drum .................................................................................................................................................... 1-2-1
1-2-2 Developer and toner............................................................................................................................. 1-2-1
1-2-3 Installation environment ....................................................................................................................... 1-2-2
1-3 Installation
1-3-1 Unpacking and installation ................................................................................................................... 1-3-1
(1) Installation procedure ..................................................................................................................... 1-3-1
1-3-2 Setting initial copy modes .................................................................................................................. 1-3-11
1-3-3 Copier management ........................................................................................................................... 1-3-12
(1) Executing a copier management item .......................................................................................... 1-3-12
(2) Default settings ............................................................................................................................. 1-3-13
1-3-4 Installing the optional drawer ............................................................................................................. 1-3-16
1-3-5 Installing the printer board/network board (option) ............................................................................. 1-3-18
1-3-6 Installing the memory board (standard for 18 cpm/optional for 15 cpm) ............................................ 1-3-21
1-4 Maintenance Mode
1-4-1 Maintenance mode ............................................................................................................................... 1-4-1
(1) Executing a maintenance item ....................................................................................................... 1-4-1
(2) Maintenance mode item list ............................................................................................................ 1-4-2
(3) Contents of maintenance mode items ............................................................................................ 1-4-5
1-5 Troubleshooting
1-5-1 Paper misfeed detection ...................................................................................................................... 1-5-1
(1) Paper misfeed indication ................................................................................................................ 1-5-1
(2) Paper misfeed detection conditions................................................................................................ 1-5-2
(3) Paper misfeeds ............................................................................................................................... 1-5-6
1-5-2 Self-diagnosis ..................................................................................................................................... 1-5-10
(1) Self-diagnostic function ................................................................................................................ 1-5-10
(2) Self-diagnostic codes ................................................................................................................... 1-5-10
1-5-3 Image formation problems ................................................................................................................. 1-5-15
(1) No image appears (entirely white). ............................................................................................... 1-5-16
(2) No image appears (entirely black). ............................................................................................... 1-5-16
(3) Image is too light. ......................................................................................................................... 1-5-17
(4) Background is visible. ................................................................................................................... 1-5-17
(5) A white line appears longitudinally. .............................................................................................. 1-5-17
(6) A black line appears longitudinally. .............................................................................................. 1-5-18
(7) A black line appears laterally. ....................................................................................................... 1-5-18
(8) One side of the copy image is darker than the other. ................................................................... 1-5-18
(9) Black dots appear on the image. .................................................................................................. 1-5-19
(10) Image is blurred. ........................................................................................................................... 1-5-19
(11) The leading edge of the image is consistently misaligned with the original. ................................ 1-5-19
(12) The leading edge of the image is sporadically misaligned with the original. ................................ 1-5-20

1-1-2
2A1/2
(13) Paper creases. ............................................................................................................................. 1-5-20
(14) Offset occurs. ............................................................................................................................... 1-5-20
(15) Image is partly missing. ................................................................................................................ 1-5-21
(16) Fixing is poor. ............................................................................................................................... 1-5-21
(17) Image is out of focus. ................................................................................................................... 1-5-21
(18) Image center does not align with the original center. ................................................................... 1-5-22
(19) Image contrast is low (carrier scattering). ..................................................................................... 1-5-22
1-5-4 Electrical problems ............................................................................................................................. 1-5-23
(1) The machine does not operate when the main switch is turned on.............................................. 1-5-23
(2) The drive motor does not operate. ............................................................................................... 1-5-23
(3) The scanner motor does not operate. .......................................................................................... 1-5-23
(4) The toner feed motor does not operate. ....................................................................................... 1-5-23
(5) Cooling fan motor does not operate. ............................................................................................ 1-5-23
(6) Original paper feed motor does not operate. ................................................................................ 1-5-24
(7) ST feed motor does not operate. .................................................................................................. 1-5-24
(8) The registration clutch does not operate. ..................................................................................... 1-5-24
(9) The paper feed clutch does not operate. ...................................................................................... 1-5-24
(10) The ST paper feed clutch does not operate. ................................................................................ 1-5-24
(11) The bypass paper feed clutch does not operate. ......................................................................... 1-5-24
(12) The cleaning lamp does not turn on. ............................................................................................ 1-5-24
(13) The exposure lamp does not turn on. ........................................................................................... 1-5-24
(14) The exposure lamp does not turn off. ........................................................................................... 1-5-24
(15) The fixing heater does not turn on (C610). ................................................................................... 1-5-24
(16) The fixing heater does not turn off. ............................................................................................... 1-5-25
(17) Main charging is not performed (C510). ....................................................................................... 1-5-25
(18) Transfer charging is not performed. ............................................................................................. 1-5-25
(19) No developing bias is output. ....................................................................................................... 1-5-25
(20) The copier scans the contact glass when originals are loaded on the DF. .................................. 1-5-25
(21) A paper jam in the paper feed, paper conveying or fixing section is indicated
when the main switch is turned on. .............................................................................................. 1-5-25
(22) The message requesting covers to be closed is displayed when the front cover,
paper conveying cover and optional drawer left cover are closed. ............................................... 1-5-26
(23) Others. .......................................................................................................................................... 1-5-26
1-5-5 Mechanical problems ......................................................................................................................... 1-5-27
(1) No primary paper feed. ................................................................................................................. 1-5-27
(2) No secondary paper feed. ............................................................................................................ 1-5-27
(3) Skewed paper feed....................................................................................................................... 1-5-27
(4) The scanner does not travel. ........................................................................................................ 1-5-27
(5) Multiple sheets of paper are fed at one time. ................................................................................. 1-5-27
(6) Paper jams. .................................................................................................................................. 1-5-27
(7) Toner drops on the paper conveying path. ................................................................................... 1-5-27
(8) Abnormal noise is heard. .............................................................................................................. 1-5-27
1-6 Assembly and Disassembly
1-6-1 Precautions for assembly and disassembly ......................................................................................... 1-6-1
(1) Precautions..................................................................................................................................... 1-6-1
(2) Running a maintenance item .......................................................................................................... 1-6-2
1-6-2 Paper feed section ............................................................................................................................... 1-6-3
(1) Detaching and refitting the paper feed pulleys ............................................................................... 1-6-3
(2) Detaching and refitting the ST paper feed pulleys and
ST paper conveying roller (option) ................................................................................................. 1-6-5
(2-1) Detaching and refitting the ST paper feed pulleys ................................................................. 1-6-5
(2-2) Detaching and refitting the ST paper conveying roller ........................................................... 1-6-8
(3) Detaching and refitting the bypass paper feed pulley ..................................................................... 1-6-9
(4) Adjustment after roller and clutch replacement ............................................................................ 1-6-12
(4-1) Adjusting the leading edge registration of image printing .................................................... 1-6-12
(4-2) Adjusting the leading edge registration for memory image printing ..................................... 1-6-13
(4-3) Adjusting the center line of image printing ........................................................................... 1-6-14
(4-4) Adjusting the margins for printing ........................................................................................ 1-6-15
(4-5) Adjusting the amount of slack in the paper .......................................................................... 1-6-16

1-1-3
2A1/2
1-6-3 Optical section .................................................................................................................................... 1-6-17
(1) Detaching and refitting the exposure lamp ................................................................................... 1-6-17
(2) Detaching and refitting the scanner wires .................................................................................... 1-6-19
(2-1) Detaching the scanner wires ............................................................................................... 1-6-19
(2-2) Fitting the scanner wires...................................................................................................... 1-6-20
(3) Detaching and refitting the laser scanner unit .............................................................................. 1-6-23
(4) Detaching and refitting the ISU (reference) .................................................................................. 1-6-25
(5) Adjusting the longitudinal squareness (reference) ....................................................................... 1-6-26
(6) Adjusting magnification of the scanner in the main scanning direction ........................................ 1-6-27
(7) Adjusting magnification of the scanner in the auxiliary scanning direction ................................... 1-6-28
(8) Adjusting the scanner leading edge registration ........................................................................... 1-6-29
(9) Adjusting the scanner center line ................................................................................................. 1-6-30
(10) Adjusting the margins for scanning an original on the contact glass ............................................ 1-6-31
1-6-4 Image formation section ..................................................................................................................... 1-6-32
(1) Detaching and refitting the image formation unit .......................................................................... 1-6-32
(2) Detaching and refitting the main charger unit ............................................................................... 1-6-33
(3) Detaching and refitting the drum .................................................................................................. 1-6-34
(4) Detaching and refitting the cleaning blade ................................................................................... 1-6-36
(5) Replace the developer .................................................................................................................. 1-6-37
1-6-5 Transfer section ................................................................................................................................. 1-6-38
(1) Detaching and refitting the transfer roller assembly ..................................................................... 1-6-38
1-6-6 Fixing section ..................................................................................................................................... 1-6-39
(1) Detaching and refitting the fixing unit ........................................................................................... 1-6-39
(2) Detaching and refitting the fixing unit thermistor .......................................................................... 1-6-39
(3) Detaching and refitting the fixing heater ....................................................................................... 1-6-40
(4) Detaching and refitting the heat roller separation claws ............................................................... 1-6-42
(5) Detaching and refitting the heat roller ........................................................................................... 1-6-43
(6) Detaching and refitting the press roller ......................................................................................... 1-6-43
1-6-7 DF section .......................................................................................................................................... 1-6-45
(1) Detaching and refitting the DF forwardong pulley and
DF feed pulley (18 cpm copier only) ............................................................................................. 1-6-45
(2) Detaching and refitting the DF separation pulley (18 cpm copier only) ........................................ 1-6-47
(3) Adjusting the DF lateral squareness ............................................................................................. 1-6-48
(4) Adjusting the DF magnification ..................................................................................................... 1-6-49
(5) Adjusting the DF leading edge registration ................................................................................... 1-6-50
(6) Adjusting the DF trailing edge registration .................................................................................... 1-6-51
(7) Adjusting the DF center line ......................................................................................................... 1-6-52
(8) Adjusting the margins for scanning the original from the DF ........................................................ 1-6-53
1-7 Requirements on PCB Replacement
1-7-1 Replacing the main PCB ...................................................................................................................... 1-7-1
1-7-2 Upgrading the firmware on the main PCB ............................................................................................ 1-7-3
1-7-3 Adjustment-free variable resistors (VR) ............................................................................................... 1-7-4
2-1 Mechanical construction
2-1-1 Paper feed section ............................................................................................................................... 2-1-1
2-1-2 Main charging section .......................................................................................................................... 2-1-4
2-1-3 Optical section ...................................................................................................................................... 2-1-6
(1) Original scanning ............................................................................................................................ 2-1-7
(2) Image printing ................................................................................................................................. 2-1-9
2-1-4 Developing section ............................................................................................................................. 2-1-11
(1) Formation of magnetic brush ........................................................................................................ 2-1-12
(2) Toner density detection by the toner sensor ................................................................................ 2-1-13
(3) Toner density control .................................................................................................................... 2-1-13
(4) Correcting the toner sensor control voltage .................................................................................. 2-1-14
(5) Correcting toner output voltage .................................................................................................... 2-1-15
2-1-5 Transfer and separation section ......................................................................................................... 2-1-16
2-1-6 Cleaning section ................................................................................................................................. 2-1-18
2-1-7 Charge erasing section ...................................................................................................................... 2-1-19

1-1-4
2A1/2
2-1-8 Fixing section ..................................................................................................................................... 2-1-20
2-1-9 DF section .......................................................................................................................................... 2-1-22
(1) SDF (15 cpm copier) .................................................................................................................... 2-1-22
(2) ADF (18 cpm copier) .................................................................................................................... 2-1-23
2-2 Electrical Parts Layout
2-2-1 Electrical parts layout ........................................................................................................................... 2-2-1
(1) PCBs .............................................................................................................................................. 2-2-1
(2) Switches and sensors ..................................................................................................................... 2-2-2
(3) Motors ............................................................................................................................................. 2-2-3
(4) Other electrical components ........................................................................................................... 2-2-4
2-3 Operation of the PCBs
2-3-1 Power source PCB ............................................................................................................................... 2-3-1
2-3-2 Main PCB ............................................................................................................................................. 2-3-4
2-3-3 Operation PCB ..................................................................................................................................... 2-3-9
2-3-4 CCD PCB ........................................................................................................................................... 2-3-11
2-3-5 Laser diode PCB ................................................................................................................................ 2-3-12
2-4 Appendixes
Timing chart No. 1 .......................................................................................................................................... 2-4-1
Timing chart No. 2 .......................................................................................................................................... 2-4-2
Timing chart No. 3 .......................................................................................................................................... 2-4-3
Timing chart No. 4 .......................................................................................................................................... 2-4-4
Timing chart No. 5 .......................................................................................................................................... 2-4-5
Chart of image adjustment procedures .......................................................................................................... 2-4-6
Wiring diagram ............................................................................................................................................... 2-4-9

2A1/2
1-1-1
1-1-1 Specifications
Type ............................................... Desktop
Copying system.............................. Indirect electrostatic system
Originals ......................................... DF (18 cpm copier): Sheets of paper (Maximum original size: folio/81/2" ×14")
DF (15 cpm copier): Sheets of paper (A4R, folio/81/2" ×11"R, 81/2" ×14")
Platen: Sheets of paper, books, 3-dimensional objects (Maximum original size: folio/
81/2" ×14")
Original feed system ...................... Contact glass: fixed
DF: sheet-through
Copy paper .................................... Drawer: Plain paper (64 - 80 g/m2)
Bypass table: Plain paper (60 - 160 g/m2)
Special paper: Transparencies, letterhead, colored paper
and envelopes (when using the printer function only)
Note: Use the bypass table for special paper.
Copying sizes ................................. Maximum: folio/81/2" ×14"
Minimum: A6R /51/2" ×81/2"R (When the bypass table is used)
Magnification ratios ........................ Manual mode: 50 - 200%, 1% increments
Copy speed .................................... At 100% magnification in copy mode (15 cpm copier):
A4R/81/2" ×11"R: 15 copies/min.
At 100% magnification in copy mode (18 cpm copier):
A4R/81/2" ×11"R: 18 copies/min.
First copy time ................................ Within 6.3 s (A4R/81/2" ×11"R, original placed on the platen)
Warm-up time................................. Within 30 s (room temperature 20°C/68°F, humidity 65% RH)
In preheat/energy saver mode: Within 30 s (room temperature 20°C/68°F,
humidity 65% RH) [priorty to power save]
In preheat/energy saver mode: Within 10 s (room temperature 20°C/68°F,
humidity 65% RH) [priorty to recovery]
Paper feed system ......................... Automatic feed
Capacity:
Drawers: 250 sheets
Manual feed
Capacity:
Bypass: 50 sheets
Continuous copying ....................... 1 - 99 sheets
Photoconductor .............................. OPC (drum diameter 30 mm)
Charging system ............................ Single positive corona charging
Exposure light source .................... Semiconductor laser
Developing system ......................... Dry, reverse developing (magnetic brush)
Developer: 2-component, ferrite carrier and N29T black toner
Toner density control: toner sensor
Toner replenishing: automatic from a toner container
Transfer system ............................. Transfer roller
Fixing system ................................. Heat roller
Heat source: halogen heaters (900 W for 120 V specifications/1030 W for
220 - 240 V specifications)
Control temperature: 180°C/356°F (at normal ambient temperature)
Abnormally high temperature protection device: 150°C/302°F thermostat
Fixing pressure: 36.28 N
Charge erasing system .................. Exposure by cleaning lamp
Cleaning system ............................ Cleaning blade
Scanning system ............................ Flat bed scanning by CCD image sensor
Resolution ...................................... 600 ×600 dpi
Light source ................................... Inert gas lamp
Dimensions .................................... 15 cpm copier:
497 (W) ×497 (D) ×376 (H) mm
199/16" (W) ×199/16" (D) ×1413/16" (H)
18 cpm copier:
497 (W) ×497 (D) ×445 (H) mm
199/16" (W) ×199/16" (D) ×171/2" (H)
Weight ............................................ 15 cpm copier: Approx. 25 kg/55 lbs
18 cpm copier: Approx. 27 kg/59.4 lbs

2A1/2
1-1-2
Floor requirements ......................... 691 (W) ×497 (D) mm
273/16" (W) ×199/16" (D)
Functions........................................ Self-diagnostics, preheat, automatic copy density control, enlargement/reduction
copy and photo mode
Power source ................................. 120 V AC, 60 Hz, 9 A
220 - 240 V AC, 50/60 Hz, 4.8 A (average 2.5 A)
Power consumption ....................... 1080 W (120V)
1152 W (220 - 240V)
(Measured value: 982 W (120V)/1131 W (220 - 240V)
Options ........................................... Drawer, memory board (standard for 18 cpm copier), printer board, printer network
board

2A1/2
1-1-3
1DF
2Original table
3Original insertion guides
4DF open/close handle
5Original eject cover
6DF original switchback cover
7Operation panel
8Paper conveying cover handle
9Paper conveying cover
0Multi-Bypass
!Insert guides
@Support guide
#Toner container
$Waste toner tank
%Cleaning shaft
^Front cover
&Main switch
*Copy storage section
(Drawer
)Platen
⁄Original size scales
¤Length guide
‹Width guide
›Width adjustment lever
fiLength guide storage section
flDrawer bottom plate
‡Hnadles for transport
—Original holder (15 cpm copier only)
Figure 1-1-1
1-1-2 Parts names
(1) Copier
12°
9
8
@0
!
(
4
7
¤
fi
fl ›‹
123
9
8
@0
!
6
fl
5
›‹ (
4
7
¤
fi
⁄
%$ # ‡
&
^
*
)
• 15 cpm Copier • 18 cpm Copier

2A1/2
1-1-4
(2) Operation panel
Metric
Inch
1Start key (Indicator)
2Stop/Reset key
3Size Select keys
4Data/On-line Indicator
5Printer key
6Number of Copies/Zoom (+) key
7Number of Copies/Zoom (–) key
8Zoom Input/Enter key
9Copy quantity/magnification display
0Add Toner indicator
!Memory Overflow/Data Error indicator
@Paper Select key
#Drawer indicator
$Optional drawer indicator
%Multi-bypass indicator
^DF indicator
&Misfeed indicator
*Image mode selection key
(2 in 1/4 in 1 key
)Sort key (indicator)
⁄Copy exposure adjustment keys
1236 587@% & #$⁄
4
9* ^() 0!
1236 587@% & #$⁄
4
9* ^() 0!
Figure 1-1-2

2A1/2
1-1-5
1-1-3 Machine cross section
1Paper feed section
2Main charging section
3Optical section
4Developing section
5Transfer and sparation section
6Cleaning section
7Charge erasing section
8Fixing section
9ADF (18 cpm copier)
0SDF (15 cpm copier)
Figure 1-1-3 Machine cross section
Light path
Original path
Paper path
1
8
5
672
4
3
9
0

2A1/2
1-1-6
1Drive motor gear
2Gear 67/30
3Gear 23/16
4Gear 37/21
5Gear 23
6Bypass paper feed clutch gear
7Registration clutch gear
8Gear 32/18
9Paper feed clutch gear
0Gear 97/25
!Drum drive gear 53
@Gear 40/45
#Gear 41
$Gear 28/20
%Gear 26/20
^Fixing idle gear 44
&Gear 25
*Heat roller gear
Figure 1-1-4
1-1-4 Drive system
(1) Drive system 1 (drive motor drive train)
1
3
0
@
*
^
&
$
%
#
!
4
6
5
2
7
8
9
As viewed from machine rear

2A1/2
1-1-7
(2) Drive system 2 (scanner motor drive train)
Figure 1-1-5
1Scanner motor gear
2Scanner drive gear 27/13
3Scanner belt
4Gear Z23
5Idle gear 21
6Gear Z30
7Idle gear 21*
8Drive change gear 13*
9Drive change gear 25*
0Gear 25/19*
!Conveying gear 20*
@Conveying pulley 22*
#Conveying pulley 22*
$Drive pulley*
%Conveying belt*
*: For the 15 cpm copier only.
As viewed from machine rear
@, #, $and %are parts of machine front
1
9
8
7
2
3
6
5
4
$
#
%
!@
0

2A1/2
1-1-8
(3) Drive system 3 (original feed motor (18 cpm copier only) drive train)
Figure 1-1-6
1Original feed motor gear
2Feed gear 42/20
3Feed drive gear 20
4Feed pulley 20
5Idle gear 20
6Feed drive gear 20
7Lift gear 38
As viewed from machine rear
7
1
2
4
3
5
6
(4) Drive system 4 (ST feed motor (optional) drive train)
Figure 1-1-7
1ST feed motor gear
2Gear 25/59
3Gear 19
4Gear 19
5ST paper feed clutch gear 20
As viewed from machine rear
51
2
3
4

2A1/2
1-2-1
1-2-1 Drum
Note the following when handling or storing the drum.
• When removing the image formation unit, never expose the drum surface to strong direct light.
• Keep the drum at an ambient temperature between 10°C/50°F and 32.5°C/90.5°F and at a relative humidity not higher
than 85% RH. Avoid abrupt changes in temperature and humidity.
• Avoid exposure to any substance which is harmful to or may affect the quality of the drum.
• Do not touch the drum surface with any object. Should it be touched by hands or stained with oil, clean it.
1-2-2 Developer and toner
Store the developer and toner in a cool, dark place. Avoid direct light and high humidity.