Ricoh C275 Service Manual
C275
SERVICE MANUAL
005648MIU
C275
SERVICE MANUAL
C275
SERVICE MANUAL
005648MIU
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interest of Ricoh Americas Corporation and its member companies.
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© 2010 RICOH Americas Corporation. All rights reserved.
The Service Manual contains information
regarding service techniques, procedures,
processes and spare parts of office equipment
distributed by Ricoh Americas Corporation.
Users of this manual should be either service
trained or certified by successfully completing a
Ricoh Technical Training Program.
Untrained and uncertified users utilizing
information contained in this service manual to
repair or modify Ricoh equipment risk personal
injury, damage to property or loss of warranty
protection.
Ricoh Americas Corporation
WARNING
LEGEND
PRODUCT
CODE
COMPANY
GESTETNER LANIER RICOH SAVIN
C275 (USA) --- LDD130 DX 3343 3183DNP
C275 (LAD)
DX 3343/
DX 3443
--- DX 3443 ---
DOCUMENTATION HISTORY
REV. NO. DATE COMMENTS
*
02/2010 Original Printing
SM i C275 cC
C275
TABLE OF CONTENTS
PRODUCT INFORMATION
1. PRODUCT INFORMATION ...........................................................1-1
1.1SPECIFICATIONS ..................................................................................... 1-1
1.2GUIDANCE FOR THOSE WHO ARE FAMILIAR WITH PREDECESSOR
PRODUCTS ..................................................................................................... 1-2
1.3OVERVIEW ................................................................................................ 1-4
1.3.1 MECHANICAL COMPONENT LAYOUT ........................................... 1-4
1.3.2 ELECTRICAL COMPONENT LAYOUT ............................................ 1-5
Boards .................................................................................................. 1-6
Motors .................................................................................................. 1-6
Solenoids.............................................................................................. 1-7
Switches ............................................................................................... 1-8
Sensors ................................................................................................ 1-8
Others ................................................................................................ 1-10
1.3.3 DRIVE LAYOUT .............................................................................. 1-11
INSTALLATION
2. INSTALLATION ............................................................................2-1
2.1INSTALLATION REQUIREMENTS ............................................................ 2-1
2.1.1 OPTIMUM ENVIRONMENTAL CONDITION .................................... 2-1
2.1.2 ENVIRONMENTS TO AVOID ........................................................... 2-1
2.1.3 POWER CONNECTION ................................................................... 2-1
2.1.4 MINIMUM SPACE REQUIREMENTS ............................................... 2-1
2.1.5 DIMENSIONS ................................................................................... 2-2
2.1.6 MAIN BODY AND PERIPHERALS ................................................... 2-3
2.1.7 POWER SOCKETS FOR PERIPHERALS ........................................ 2-4
C275 ii SM
2.2INSTALLATION PROCEDURE .................................................................. 2-5
2.2.1 MAIN BODY ...................................................................................... 2-5
Accessory Check .................................................................................. 2-5
Installation Procedure ........................................................................... 2-6
Changing the operation panel language ............................................. 2-13
Date/Time Setting ............................................................................... 2-13
SP Codes Setting ............................................................................... 2-13
2.2.2 COLOR DRUM (OPTION) .............................................................. 2-14
Accessory Check ................................................................................ 2-14
Installation Procedure ......................................................................... 2-14
2.2.3 ADF (OPTION) ................................................................................ 2-15
Accessory Check ................................................................................ 2-15
Installation Procedure ......................................................................... 2-16
2.2.4 PLATEN COVER (OPTION) ........................................................... 2-18
Accessory Check ................................................................................ 2-18
Installation Procedure ......................................................................... 2-18
2.2.5 TAPE DISPENSER (OPTION) ........................................................ 2-19
Accessory Check ................................................................................ 2-19
Installation Procedure ......................................................................... 2-20
2.2.6 PRINTER UNIT VC-20 (OPTION) ................................................... 2-23
Accessory Check ................................................................................ 2-23
Installation Procedure ......................................................................... 2-24
2.2.7 PRINTER UNIT TYPE 4545A (OPTION) ........................................ 2-25
Components Check ............................................................................ 2-25
Installation Procedure ......................................................................... 2-26
PREVENTIVE MAINTENANCE
3. PREVENTIVE MAINTENANCE ....................................................3-1
3.1MAINTENANCE TABLES .......................................................................... 3-1
SM iii C275
REPLACEMENT AND ADJUSTMENT
4. REPLACEMENT AND ADJUSTMENT .........................................4-1
4.1GENERAL CAUTION ................................................................................. 4-1
4.2SPECIAL TOOLS ....................................................................................... 4-2
4.3IMAGE ADJUSTMENT .............................................................................. 4-3
4.3.1 OVERVIEW ....................................................................................... 4-3
4.3.2 SP6-10: MASTER WRITING SPEED ............................................... 4-3
4.3.3 SP6-21: PAPER REGIST POSITION ............................................... 4-4
4.3.4 SP6-5: SCANNING SPEED – PLATEN AND SP6-6: SCANNING
SPEED – ADF MODE ................................................................................ 4-4
4.3.5 SP6-3: SCANNING START POSITION – PLATEN AND SP6-4:
SCANNING START POSITION - ADF ....................................................... 4-4
4.3.6 SP6-1: MAIN SCAN POSITION – PLATEN AND SP6-2: MAIN SCAN
POSITION - ADF ........................................................................................ 4-5
4.4COVERS .................................................................................................... 4-6
4.4.1 FRONT COVER AND FRONT DOOR .............................................. 4-6
4.4.2 OPERATION PANEL ........................................................................ 4-7
4.4.3 REAR COVER .................................................................................. 4-7
4.4.4 UPPER COVERS ............................................................................. 4-8
4.5BOARDS .................................................................................................... 4-9
4.5.1 MPU .................................................................................................. 4-9
4.5.2 PSU ................................................................................................ 4-10
PSU Board ......................................................................................... 4-10
PSU Board with Bracket ..................................................................... 4-10
4.6SCANNER ............................................................................................... 4-11
4.6.1 EXPOSURE GLASS, DF EXPOSURE GLASS AND SCALES ....... 4-11
Exposure Glass .................................................................................. 4-11
DF Exposure Glass ............................................................................ 4-11
4.6.2 LENS BLOCK ................................................................................. 4-12
4.6.3 EXPOSURE LAMP AND LAMP STABILIZER BOARD ................... 4-13
4.6.4 SCANNER MOTOR ........................................................................ 4-14
4.6.5 SCANNER HOME POSITION SENSOR......................................... 4-15
4.6.6 PLATEN COVER SENSOR ............................................................ 4-16
C275 iv SM
4.6.7 ADJUSTING THE SCANNER POSITION ....................................... 4-17
Overview ............................................................................................ 4-17
Adjusting the Belt Contact Points for the First Scanner ...................... 4-18
Adjusting the Belt Contact Points for the Second Scanner ................. 4-19
4.7MASTER FEED ........................................................................................ 4-21
4.7.1 MASTER MAKING UNIT ................................................................. 4-21
4.7.2 MASTER MAKING UNIT SET SWITCHES ..................................... 4-22
4.7.3 THERMAL HEAD ............................................................................ 4-23
Installation .......................................................................................... 4-24
4.7.4 MASTER SET COVER SENSOR ................................................... 4-25
4.7.5 MASTER END SENSOR ................................................................ 4-25
4.7.6 CUTTER UNIT ................................................................................ 4-26
4.7.7 THERMAL HEAD VOLTAGE ADJUSTMENT ................................. 4-27
4.7.8 MASTER END SENSOR ADJUSTMENT ....................................... 4-29
4.8MASTER EJECT ...................................................................................... 4-31
4.8.1 MASTER EJECT UNIT ................................................................... 4-31
4.8.2 MASTER EJECT ROLLERS ........................................................... 4-32
4.8.3 MASTER EJECT MOTOR AND PRESSURE PLATE MOTOR ....... 4-32
4.8.4 DRUM MASTER SENSOR, MASTER EJECT SENSOR AND EJECT
BOX SET SENSOR ................................................................................. 4-33
4.8.5 PRESSURE PLATE HP SENSOR AND PRESSURE PLATE LIMIT
SENSOR .................................................................................................. 4-34
4.8.6 AIR KNIFE FAN MOTOR ................................................................ 4-35
4.8.7 MASTER EJECT POSITION SENSOR........................................... 4-35
4.8.8 MASTER CLAMPER OPENING UNIT ............................................ 4-36
4.9PAPER FEED .......................................................................................... 4-37
4.9.1 PICK-UP ROLLER, PAPER FEED ROLLER AND FRICTION PAD 4-37
4.9.2 PAPER TABLE LOWER LIMIT SENSOR ....................................... 4-38
4.9.3 PAPER HEIGHT SENSOR 1 AND 2 ............................................... 4-39
4.9.4 PAPER END SENSOR ................................................................... 4-40
4.9.5 PAPER TABLE MOTOR ................................................................. 4-41
4.9.6 PAPER FEED CLUTCH .................................................................. 4-41
4.9.7 PAPER SEPARATION PRESSURE ADJUSTMENT ...................... 4-42
SM v C275
4.10 PRINTING .......................................................................................... 4-43
4.10.1 PRESS ROLLER ........................................................................ 4-43
4.10.2 REGISTRATION SENSOR ......................................................... 4-44
4.10.3 FEED START TIMING SENSOR ................................................ 4-44
4.10.4 2ND FEED TIMING SENSOR..................................................... 4-45
4.10.5 REGISTRATION MOTOR ........................................................... 4-46
4.10.6 REGISTRATION ROLLER .......................................................... 4-47
4.10.7 PRESS ROLLER RELEASE SOLENOIDS ................................. 4-49
4.10.8 PRESS ROLLER RELEASE LEVER ADJUSTMENT ................. 4-50
4.10.9 PRINTING PRESSURE ADJUSTMENT ..................................... 4-52
4.11 DRUM ................................................................................................ 4-53
4.11.1 PREPARATION .......................................................................... 4-53
4.11.2 CLOTH SCREEN ........................................................................ 4-53
Installation .......................................................................................... 4-54
4.11.3 CLAMPER AND METAL SCREEN ............................................. 4-56
Installation .......................................................................................... 4-57
4.11.4 INK PUMP UNIT ......................................................................... 4-58
4.11.5 INK ROLLER UNIT AND INK ROLLER ONE-WAY CLUTCH ..... 4-59
4.11.6 DOCTOR ROLLER GAP ADJUSTMENT ................................... 4-61
4.11.7 INK DETECTION ADJUSTMENT ............................................... 4-63
Using an Oscilloscope ........................................................................ 4-63
Simple Method ................................................................................... 4-64
4.12 PAPER DELIVERY ............................................................................ 4-65
4.12.1 PAPER DELIVERY UNIT ............................................................ 4-65
4.12.2 DELIVERY BELT, PAPER EXIT SENSOR, VACUUM FAN
MOTOR AND PAPER DELIVERY UNIT BUSHINGS .............................. 4-67
4.12.3 PAPER DELIVERY MOTOR ....................................................... 4-68
4.12.4 EXIT PAWL ADJUSTMENT ........................................................ 4-69
Clearance adjustment ........................................................................ 4-69
Timing adjustment .............................................................................. 4-70
4.13 MAIN DRIVE ...................................................................................... 4-72
4.13.1 REGISTRATION MOTOR ........................................................... 4-72
4.13.2 MAIN MOTOR............................................................................. 4-74
4.13.3 MAIN DRIVE TIMING BELT ADJUSTMENT .............................. 4-75
4.13.4 MAIN MOTOR PULLEY POSITION ............................................ 4-76
4.14 MODIFICATION OF COLOR DRUM INTO BLACK DRUM ................ 4-77
Rev. 12/15/2010
C275 vi SM
SYSTEM MAINTENANCE
5. SYSTEM MAINTENANCE ............................................................. 79
5.1SERVICE PROGRAM MODE ..................................................................... 79
TROUBLESHOOTING
6. TROUBLESHOOTING ..................................................................6-1
6.1TROUBLESHOOTING GUIDE ................................................................... 6-1
ENERGY SAVING
7. ENERGY SAVING .........................................................................7-1
7.1ENERGY SAVE ......................................................................................... 7-1
7.1.1 ENERGY SAVER MODES ................................................................ 7-1
Timer Settings ...................................................................................... 7-2
Recommendation ................................................................................. 7-2
7.2PAPER SAVE ............................................................................................ 7-3
7.2.1 EFFECTIVENESS OF THE COMBINE FUNCTION ......................... 7-3
Combine mode: .................................................................................... 7-3
Recommendation ................................................................................. 7-3
275 ....................................................................................................... 7-3
C275 SERVICE MANUAL APPENDICES
SEE C275 SERVICE MANUAL APPENDICES SECTION FOR DETAILED TABLE OF
CONTENTS
PRODUCT INFORMATION
APPENDIX: SPECIFICATIONS
INSTALLATION
APPENDIX: PREVENTIVE MAINTENANCE
PREVENTIVE MAINTENANCE
APPENDIX: SERVICE CALL CONDITIONS
REPLACEMENT AND ADJUSTMENT
APPENDIX: ELECTRICAL COMPONENT DEFECTS
SYSTEM MAINTENANCE REFERENCE
APPENDIX: DIP SW, LED, VR, TP AND FUSE TABLES
TROUBLESHOOTING
APPENDIX: SERVICE PROGRAM MODE TABLES
ENERGY SAVING
TAB
POSITION 2
TAB
POSITION 1
TAB
POSITION 3
TAB
POSITION 4
TAB
POSITION 6
TAB
POSITION 5
TAB
POSITION 7
Read This First
Important Safety Notices
Responsibilities of the Customer Engineer
Customer Engineer
Maintenance shall be done only by trained customer engineers who have completed service
training for the machine and all optional devices designed for use with the machine.
Reference Material for Maintenance
Maintenance shall be done using the special tools and procedures prescribed for
maintenance of the machine described in the reference materials (service manuals,
technical bulletins, operating instructions, and safety guidelines for customer engineers).
In regard to other safety issues not described in this document, all customer engineers
shall strictly obey procedures and recommendations described the "CE Safety Guide".
Use only consumable supplies and replacement parts designed for use of the machine.
Before Installation, Maintenance
Shipping and Moving the Machine
Work carefully when lifting or moving the machine. If the machine is heavy, two or
more customer engineers may be required to prevent injuries (muscle strains, spinal
injuries, etc.) or damage to the machine if it is dropped or tipped over.
Personnel moving or working around the machine should always wear proper
clothing and footwear. Never wear loose fitting clothing or accessories (neckties,
loose sweaters, bracelets, etc.) or casual footwear (slippers, sandals, etc.) when
lifting or moving the machine.
Always unplug the power cord from the power source before you move the product.
Before you move the product, arrange the power cord so it will not fall under the
product.
Power
Always disconnect the power plug before doing any maintenance procedure. After
switching off the machine, power is still supplied to the main machine and other
devices. To prevent electrical shock, switch the machine off, wait for a few seconds,
then unplug the machine from the power source.
Before you do any checks or adjustments after turning the machine off, work
carefully to avoid injury. After removing covers or opening the machine to do checks
or adjustments, never touch electrical components or moving parts (gears, timing
belts, etc.).
After turning the machine on with any cover removed, keep your hands away from
electrical components and moving parts. Never touch the cover of the fusing unit,
gears, timing belts, etc.
Installation, Disassembly and Adjustments
After installation, maintenance, or adjustment, always check the operation of the
machine to make sure that it is operating normally. This ensures that all shipping
materials, protective materials, wires and tags, metal brackets, etc., removed for
installation, have been removed and that no tools remain inside the machine. This
also ensures that all release interlock switches have been restored to normal
operation.
Never use your fingers to check moving parts causing spurious noise. Never use
your fingers to lubricate moving parts while the machine is operating.
Special Tools
Use only standard tools approved for machine maintenance.
For special adjustments, use only the special tools and lubricants described in the
service manual. Using tools incorrectly , or using tools that could damage part s, could
damage the machine or cause injuries.
During Maintenance
General
Before you begin a maintenance procedure:
1) Switch the machine off
2) Disconnect the power plug from the power source.
Safety Devices
Never remove any safety device unless it requires replacement. Always replace
safety devices immediately.
Never do any procedure that defeats the function of any safety device. Modification
or removal of a safety device (fuse, switch, etc.) could lead to a fire and personal
injury . Always test the operation of the machine to ensure that it is operating normally
and safely after removal and replacement of any safety device.
For replacements use only the correct fuses or circuit breakers rated for use with the
machine. Using replacement devices not designed for use with the machine could
lead to a fire and personal injuries.
Organic Cleaners
During preventive maintenance, never use any organic cleaners (alcohol, etc.) other
than those described in the service manual.
Make sure the room is well ventilated before using any organic cleaner. Use organic
solvents in small amounts to avoid breathing the fumes and becoming nauseous.
Switch the machine off, unplug it, and allow it to cool before doing preventive
maintenance. To avoid fire or explosion, never use an organic cleaner near any part
that generates heat.
Wash your hands thoroughly after cleaning parts with an organic cleaner to
contamination of food, drinks, etc. which could cause illness.
Clean the floor completely after accidental spillage of silicone oil or other materials to
prevent slippery surfaces that could cause accidents leading to hand or leg injuries.
Use dry rags to soak up spills.
Power Plug and Power Cord
Before serving the machine (especially when responding to a service call), always
make sure that the power plug has been inserted completely into the power source.
A partially inserted plug could lead to heat generation (due to a power surge caused
by high resistance) and cause a fire or other problems.
Always check the power plug and make sure that it is free of dust and lint. Clean it if
necessary. A dirty plug can generate heat which could cause a fire.
Inspect the length of the power cord for cuts or other damage. Replace the power
cord if necessary. A frayed or otherwise damaged power cord can cause a short
circuit which could lead to a fire or personal injury from electrical shock.
Check the length of the power cord between the machine and power supply. Make
sure the power cord is not coiled or wrapped around any object such as a table leg.
Coiling the power cord can cause excessive heat to build up and could cause a fire.
Make sure that the area around the power source is free of obstacles so the power
cord can be removed quickly in case of an emergency.
Make sure that the power cord is grounded (earthed) at the power source with the
ground wire on the plug.
Connect the power cord directly into the power source. Never use an extension cord.
When you disconnect the power plug from the power source, always pull on the plug,
not the cable.
After Installation, Servicing
Points to Confirm with Operators
At the end of installation or a service call, instruct the user about use of the machine.
Emphasize the following points.
Show operators how to remove jammed paper and troubleshoot other minor problems by
following the procedures described in the operating instructions.
Point out the parts inside the machine that they should never touch or attempt to remove.
Confirm that operators know how to store and dispose of consumables.
Make sure that all operators have access to an operating instruction manual for the
machine.
Confirm that operators have read and understand all the safety instructions described in
the operating instructions.
Demonstrate how to turn off the power and disconnect the power plug (by pulling the plug,
not the cord) if any of the following events occur: 1) something has spilled into the
product, 2) service or repair of the product is necessary, 3) the product cover has been
damaged.
Caution operators about removing paper fasteners around the machine. They should
never allow paper clips, staples, or any other small metallic objects to fall into the
machine.
Safety Instructions for this Machine
Prevention of Physical Injury
1. Before disassembling or assembling parts of the machine and peripherals, make sure
that the machine and peripheral power cords are unplugged.
2. The plug should be near the machine and easily accessible.
3. If any adjustment or operation check has to be made with exterior covers off or open
while the main switch is turned on, keep hands away from electrified or mechanically
driven components.
4. The inside and the metal parts of the fusing unit become extremely hot while the machine
is operating. Be careful to avoid touching those components with your bare hands.
5. To prevent a fire or explosion, keep the machine away from flammable liquids, gases,
and aerosols.
Health Safety Conditions
1. If you get ink in your eyes by accident, try to remove it with eye drops or flush with water
as first aid. If unsuccessful, get medical attention.
2. If you ingest ink by accident, induce vomiting by sticking a finger down your throat or by
giving soapy or strong salty water to drink.
Observance of Electrical Safety Standards
1. The machine and its peripherals must be installed and maintained by a customer service
representative who has completed the training course on those models.
Safety and Ecological Notes for Disposal
1. Dispose of replaced parts in accordance with local regulations.
2. Used ink and masters should be disposed of in an environmentally safe manner and in
accordance with local regulations.
Symbols
This manual uses several symbols. The meanings of those symbols are as follows:
See or Refer to
Clip ring
E-ring
Screw
Connector
Clamp
PRODUCT INFORMATION
REVISION HISTORY
Page Date Added/Updated/New
None
Specifications
SM 1-1 C275
Product
Information
1. PRODUCT INFORMATION
1.1 SPECIFICATIONS
See "Appendices" for the "General Specifications":
Guidance for Those Who are Familiar with Predecessor Products
C275 1-2 SM
1.2 GUIDANCE FOR THOSE WHO ARE FAMILIAR WITH
PREDECESSOR PRODUCTS
Machine C275 is a successor model to Machine C267/C271. If you have experience with the
predecessor products, the following information will be of help when you read this manual.
Different Points from Predecessor Products
Item C267/C271 C275
Paper Delivery
Motor
No Yes
Drum HP Lock
Mechanism
No Yes
Optional Printer
Unit Type 4545A
No Yes
First Print Time
33 seconds (A4
)
When setting an original on the
exposure glass
34 seconds (A4 )
When setting an original on the
exposure glass
Depth 676 mm 681 mm
Power Source
120 V, 60 Hz, 1.7 A
220 V – 240 V, 50 – 60 Hz, 1.1 A
120 V, 60 Hz, 2.2 A
220 V – 240 V, 50 – 60 Hz, 1.2 A
Power
Consumption
120V, 60Hz:
Less than 150W (Printing)
Less than 150W (Master making)
220V-240V, 50-60Hz:
Less than 160W (Printing)
Less than 160W (Master making)
120V, 60Hz:
Less than 185W (Printing)
Less than 210W (Master making)
220V-240V, 50-60Hz:
Less than 185W (Printing)
Less than 210W (Master making)
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