Text preview for : DocuprintC8C6sm.pdf part of Xerox DocuPrint C8/C6 DocuPrint C8/C6
Service Manual
Back to : DocuprintC8C6sm.rar | Home
XEROX
Xerox
DocuPrint C8/C6
Service Manual
701P30140
July, 1999
XEROX
Xerox DocuPrint C8/C6 Printer
Service Manual
701P30140
July, 1999
This Service Manual contains information that applies Copyright protection claimed includes all forms of
to the DocuPrint C8/C6 Inkjet Printer. matters of copyrightable materials and information
now allowed by statutory or judicial law or hereinafter
NOTICE granted, including without limitation, material
generated from the software programs which are
This manual is for use by Xerox Technicians and
displayed on the screen such as styles, templates,
Xerox trained technicians only.
icons, screen displays, looks, etc.
Xerox, and all product names and product numbers
NOTICE mentioned in this publication are trademarks.
While every care has been taken in the preparation of
this manual, no liability will be accepted by Xerox Other product names and images used in this guide
arising out of any inaccuracies or omissions. may be trademarks or registered trademarks of their
respective companies and are hereby acknowledged.
All service documentation is supplied to Xerox
external customers for informational purposes only.
Xerox service documentation is intended for use by
certified, product trained service personnel only.
Xerox does not warrant or represent that such
documentation is complete. Nor does Xerox
represent or warrant that it will notify or provide to
such customer any future changes to this
documentation. Customers service of equipment, or
modules, components, or parts of such equipment
may void any otherwise applicable Xerox warranties.
If Customer services such as equipment, modules,
components, or parts thereof, Customer releases
Xerox from any and all liability for Customers actions,
and Customer agrees to indemnify, defend, and hold
Xerox harmless from any third party claims which
arise directly or indirectly from such service.
Prepared by:
Multinational Customer and Service Education
780 Salt Road
Webster, NY 14580
Prepared for:
Network Products Business Unit
Xerox Corporation
800 Phillips Road
Webster, New York 14580
Copyright 1999 Xerox Corporation. All rights reserved.
Xerox is a registered trademark of Xerox Corporation.
Warning
This equipment complies with the requirements in
Part 15 of FCC rules for a class A computing device.
Operation of the equipment in a residential area may
cause unacceptable interference to radio and TV
reception, requiring the operator to take whatever
steps are necessary to correct the interference.
Electrostatic Discharge
This caution indicates that there are components
which are sensitive to damage caused by
electrostatic discharge
.
CAUTION
These components are susceptible
to electrostatic discharge. Observe
all ESD procedures to avoid
damage.
Shock Hazard
This symbol indicates the presence of potentially
hazardous voltages
Front Matter 7/99 DocuPrint C8/C6
iii
TABLE OF CONTENTS INTRODUCTION
The DocuPrint C8/C6 Service Manual is the primary
TITLE PAGE document used for repairing and maintaining the
C8/C6 Inkjet Printer.
INTRODUCTION
This manual contains Service Call Procedures,
About This Manual ...................................... iv
Diagnostic Procedures, General Information, Repair
Organization ................................................ iv
Analysis Procedures, Image Quality Analysis
How To Use This Manual............................. v
Procedures, Wiring Data and Parts Lists that will
Reference Symbology................................. vi
enable the Service Representative to repair C8/C6
Special Symbols.......................................... vi
failures.
Signal Nomenclature ................................. vii
DC Voltage Levels....................................... vii ABBREVIATIONS
1. Service Call Procedures
Section Contents.................................. 2-1 EOF End of Forms
ESD Electrostatic Discharge
2. Troubleshooting
FRU Field Replaceable Unit
Section Contents.................................. 2-1
3. Image Quality RAPs LED Light-Emitting Diode
Section Contents.................................. 3-1 POST Power-On Self Test
4. Repair / Adjustment Procedures RAM Random Access Memory
Section Contents.................................. 4-1 ROM Read Only Memory
5. Parts List SIMM Single In-line Memory Module
Section Contents.................................. 5-1 V ac Volts alternating current
6. General Procedures V dc Volts direct current
Section Contents.................................. 6-1
7. Wiring Data
Section Contents.................................. 7-1
DocuPrint C8/C6 7/99 Front Matter
iv
Organization Section 4 - REPAIR PROCEDURES
This manual is divided into seven sections. The title This section contains the instructions for removal,
and description of each section of the manual is as replacement, and adjustment of the spared parts.
follows:
Section 5 - PARTS LISTS
Section 1 - SERVICE CALL PROCEDURES This section contains illustrations of disassembled
This section is used to identify a suspected problem. subsystems and a listing of the spared parts.
It contains Call Flow, Initial Actions, Corrective Part names are listed in this section of the manual
Actions, and Final Actions. This part of the service even if the part itself is not spared. All the parts that
manual should always be used to start the service are spared will have the part number listed. Parts that
call. are not spared will not have a number listed.
Section 2 - TROUBLESHOOTING Section 6 - GENERAL PROCEDURES
This section contains the procedures necessary to This section contains diagnostic routines,
repair failures in the printer. This section also features/options availability, printer setup procedures,
contains the procedures necessary to troubleshoot and a listing of tools, supplies, and accessories.
image quality problems.
Section 7 - WIRING DATA
Section 3 - IMAGE QUALITY RAPs This section contains illustrations of the plug/jack
This section contains Image Quality RAPs for the locations and the routing of power and signal cables.
DocuPrint C8/C6 printer.
Front Matter 7/99 DocuPrint C8/C6
v
Revision Control Chart
Product Manual Title Part Number
DocuPrint C8/C6 DocuPrint C8/C6 Service Manual 701P30140
Page Date Page Date Page Date Page Date
DocuPrint C8/C6 7/99 Front Matter
vi
Section 1
Service Call Procedures
1.1 Call Flow Diagram ........................................................................... 1-2
1.2 Initial Actions................................................................................... 1-4
1.3 Corrective Actions .......................................................................... 1-5
1.4 Final Actions.................................................................................... 1-5
1.5 Maintenance Approach................................................................... 1-5
DocuPrint C8/C6 7/99 Service Call Procedures
1-1
1.1 Call Flow Diagram
The basic troubleshooting steps are outlined in the Call Flow Diagram. All service calls begin with Initial
Actions and end with Final Actions.
Initial Actions
Corrective Actions
Parts List Troubleshooting Repair Procedures
Wiring Data General Procedures
Final Actions Correct Any
Image Quality Secondary Problems
Service Call Procedures 7/99 DocuPrint C8/C6
1-2
Printer Maintenance
Introduction
When the printer is being serviced, the following maintenance procedure should be performed.
Procedure
Clean the following parts every time the printer is serviced:
Description Procedure
Cover Clean using a Lint
Free Tissue
35P2163
(USCO/ACO) or
600S4372 (XE) and
water.
Paper Feed roller Clean using a Lint
Free Tissue
35P2163
(USCO/ACO) or
600S4372 (XE) and
water.
Paper Feed Pinch Clean using a Lint
rollers and Paper Free Tissue
Feed Guide 35P2163
(USCO/ACO) or
600S4372 (XE) and
water.
Maintenance Station Clean using a Lint
Free Tissue
35P2163
(USCO/ACO) or
600S4372 (XE) and
water.
DocuPrint C8/C6 7/99 Service Call Procedures
1-3
1.2 Initial Actions
1. Verify the problem.
2. Check that the printer paper path is clear of foreign matter such as staples, paper clips, and
paper scraps.
3. After you have identified the problem symptom, check the following items:
·The printer is connected to a wall power outlet, and the outlet is supplying the correct
voltage.
·The printer power cord is not frayed or broken.
·The printer is correctly grounded.
·The printer is in an appropriate operating environment, with no extremes of heat
or humidity.
·The printer is on a level and stable surface.
Initial Actions
1. VERIFY AND CLASSIFY THE PROBLEM.
2. REPAIR THE PROBLEM.
STATUS INDICATOR PRINT QUALITY OTHER FAULTS
· LED indicator shows error · IMAGE QUALITY · DEAD MACHINE
condition PROBLEMS Go to 2.2.2 Power
Go to 2.1.2 Error Indicator Go to IQ 1 Image Defect Problems
Table Entry RAP in Section 3
· ALL OTHER PROBLEMS
· POST error indication Go to 2.1 Getting Started
Go to 2.2.1 POST Error
Table
Service Call Procedures 7/99 DocuPrint C8/C6
1-4
1.3 Corrective Actions
1. If the printer has an obvious failure or fault, you can go directly to the appropriate "Repair
Procedures"in section 4 or " Troubleshooting" in section 7 and begin corrective action.
2. If the fault is related to Image Quality, go directly to section 3 to correct the problem.
3. After all corrective actions have been made, perform Final Actions.
1.4 Final Actions
1. Run Test Prints to evaluate print quality.
2. Refer to Print Quality Service Check. Correct any print quality defects.
3. Correct any secondary problems (return to Corrective Actions, if necessary).
4. Reinstall the machine covers.
5. Clean the machine.
6. Verify printer operation with the printer connected to a host computer.
1.5 Maintenance Approach
The diagnostic information in this manual leads you to the correct replaceable unit or part. Use the error
indicator charts, symptom index, service checks, and diagnostic aids to determine the symptom and
repair the failure.
The user is directed, in the Printer Control program, to perform the head to head and bidirectional
alignment adjustments after replacing a print cartridge.
After you complete the repair, perform tests as needed to verify the repair.
DocuPrint C8/C6 7/99 Service Call Procedures
1-5
(THIS PAGE INTENTIONALLY LEFT BLANK)
Service Call Procedures 7/99 DocuPrint C8/C6
1-6
SECTION 2
Troubleshooting
2.1 Getting Started................................................................................. 2-3
2.1.1 Control Panel LED Indications ................................................. 2-3
2.1.2 Error Indicator Table................................................................. 2-3
2.1.3 Power On Self Test .................................................................. 2-3
2.1.4 Printer Tests ............................................................................. 2-4
2.1.5 Printer Operation and Evaluation ............................................ 2-4
2.2 Symptom Tables.............................................................................. 2-4
2.2.1 POST Symptoms...................................................................... 2-4
2.2.2 Power Problems ....................................................................... 2-5
2.2.3 Control Panel Problems............................................................ 2-5
2.2.4 Carriage Problems.................................................................... 2-5
2.2.5 Paper Feed Problems............................................................... 2-6
2.2.6 Print Quality Problems.............................................................. 2-6
2.2.7 Communications/Data Transfer Problems................................ 2-6
2.3 Service Checks ................................................................................ 2-7
2.3.1 Power Service Check ............................................................... 2-7
2.3.2 Control Panel Service Check ................................................... 2-8
2.3.3 Carriage Service Check ........................................................... 2-8
2.3.4 Encoder Service Check............................................................ 2-9
2.3.5 Paper Feed Service Check ...................................................... 2-9
2.3.6 Pump Assembly/Maintenance Station Service Check ........... 2-10
2.3.7 Communications/Data Transfer Problems.............................. 2-10
DocuPrint C8C6 7/99 Troubleshooting
2-1
(THIS PAGE INTENTIONALLY LEFT BLANK)
Troubleshooting 7/99 DocuPrint C8/C6
2-2
2.1 Getting Started
To check the basic printer functions, a print test can be run. Observe printer behavior during the tests to
enable fault isolation.
2.1.1 Control Panel LED Indications
Error indications are displayed by the LED indicator on the control panel. If your printer displays an error
indication during operation, refer to 2.12 Error Indicator Table and take the necessary action.
2.1.2 Error Indicator Table
Observing the LED indicator will provide a visual indication of the printer status. Refer to the Error
Indicator table below to determine the printer status as indicated by the LED operation.
LED Status Symptom Action
Off Printer idle. Refer to 2.3.2 Power Problems.
Flashing Slowly Printer error condition - low ink. Replace Printhead Cartridge (refer to section 4).
On One of following errors:
a. Out of paper a. Add paper.
b. Paper jam b. Refer to 2.3.4 Paper Feed Service Check.
c. Out of ink or wrong c. Install new printhead cartridge.
printhead cartridge.
d. Wrong cartridge. d. Install proper cartridge.
e. Scan error (visual movement e. Refer to 2.3.3 Carriage Service Check.
of carriage during print.
f. System error. f. Refer to 2.1.3 Power On Self Test.
2.1.3 Power On Self Test
The printer performs a software-controlled Power On Self Test (POST) when power is initially applied.
Unplug and then reconnect the power cord. This will initiate the POST routine. If the printer resets and is
operational, the problem was one that was temporary. If the problem still exists, the LED indicator flashes
one or more times to indicate that a problem exists. The number of flashes indicates the nature of the
failure. Refer to 2.2.1 POST Symptoms and take the necessary action.
DocuPrint C8C6 7/99 Troubleshooting
2-3
2.1.4 Printer Tests
The POST test cannot determine problems that may be encountered during printing or situations where
ink cartridge maintenance is required. To check these functions, the printer should be tested by running
an internal and external print test.
a. Internal Print Test. Running a Print Test will demonstrate the operational status of the printer.
Run a print test (refer to Printhead Test in section 6) to verify printer operation, print cartridge
alignment and printer setup information.
b. External File Print. To verify that the printer can print from an external source, a file should be
sent from a host computer. This will check that the parallel interface and associated cabling is
functioning properly as well as ensuring that the handshaking between the printer and the host
computer is correct. To do this, connect the computer to a host computer with the appropriate
printer drivers installed. Then send a print job from the host computer to the printer.
2.1.5 Printer Operation and Evaluation
Evaluate the results of these tests to determine whether the printer is operating properly and, if not,
which printer functions are not operating correctly. Refer to 2.2 Symptom Tables based on the observed
problems.
2.2 Symptom Tables
The symptom tables provide guidance in troubleshooting the printer, based on the results of running a
print test or on overall visual operating performance of the printer during a file print from an external
computer.
2.2.1 POST Symptoms
If the POST test fails, the LED indicator flashes one or more times to indicate the nature of the failure.
The POST symptom table provides a list of the possible errors and their meaning.
LED
Flashes Error Action
1 Flash ROM checksum error. Press and hold the Control button to reinitiate the
POST routine. If the test runs successfully, the
2 RAM R/W error.
error was temporary. If the error remains, unplug
3 Flash ROM device error. and reconnect the power cord to run the test
again.
4 Download error, checksum does not match.
If the error condition still exists, go to replace the
5 NVM error.
Main PWB (refer to section 4).
6 Carriage error (fatal).
7 Task manager error.
8 Unknown interrupt occurred.
Troubleshooting 7/99 DocuPrint C8/C6
2-4
2.2.2 Power Problems
Symptom Action
Printer not powered up.
Printer does not respond. Go to 2.3.1 Power Service Check.
2.2.3 Control Panel Problems
Symptom Action
Printer LED does not:
Flash
Turn OFF Go to 2.3.2 Control Panel Service Check.
Button inoperative.
Both button and LED indicator
inoperative.
2.2.4 Carriage Problems
Symptom Action
No carriage movement.
Slow carriage movement. For all symptoms listed, go to 2.3.3 Carriage
Service Check.
Carriage stops.
Carriage strikes the side of machine Go to 2.3.4 Encoder Service Check (C8 only).
and motor continues to run.
DocuPrint C8C6 7/99 Troubleshooting
2-5
2.2.5 Paper Feed Problems
Symptom Action
Paper fails to stop at first print line.
Fails to pick up the paper
Picks up more than one sheet
Picks up paper, but fails to feed
Paper jams Go to 2.3.5 Paper Feed Service Check.
Paper fails to exit
Noisy paper feed
Paper skews
2.2.6 Print Quality Problems
Symptom Action
Printout incomplete.
Irregular spots or unwanted lines
For all symptoms, refer to section 3, Image
Quality RAPs.
Unwanted or irregular dots.
Missing color in printout.
2.2.7 Communications/Data Transfer Problems
Symptom Action
Printer not communicating with host Go to 2.3.71 Communications/Data
computer. Transmission Service Check.
Troubleshooting 7/99 DocuPrint C8/C6
2-6
2.3 Service Checks
2.3.1 Power Service Check (C8 Only)
Disconnect the power cord. Remove paper from printer prior to performing the power service check.
Observe all necessary ESD precautions when removing and handling the Main PWB, power supply, or
any other electronic boards or assemblies.
Item Part Action
1 Power Line Cord Check the power line cord for damage. Check the continuity of the
line cord and replace if necessary.
2 Power Supply Disconnect all cables from Main PWB. Turn power on. Check for
correct voltages at power supply connector J1 as follows:
J1-2: +5 VDC
J1-3,-4: +24 VDC
If any voltage is incorrect or missing, replace the power supply.
Otherwise, perform the following procedure:
a. Turn power off.
b. Connect two voltmeters to C3 (+) (+5 VDC) and C5 (+) (+42
VDC).
c. While monitoring the two voltmeters, reconnect the main power
cable J1 to the Main PWB.
d. Turn power back on. If voltages are incorrect, replace the Main
PWB. Otherwise, proceed to next step.
e. Turn power off and reconnect one of the cables (disconnected
above) to the Main PWB.
f. Turn power on and observe the voltmeters. If voltages are
incorrect, replace the corresponding component connected to the
cable just connected or the cable itself.
g. If the voltages are correct, repeat steps e and f for each of the
remaining cables until all cables are reconnected. If printer still does
not power up after all cables have bee reconnected, replace power
supply.
DocuPrint C8C6 7/99 Troubleshooting
2-7
2.3.2 Control Panel Service Check
Disconnect and then reconnect the power cord while observing the front LED.
Item Part Action
1 Button inoperative Remove main cover and check action of button in cover. If button is
okay, replace the Sensor Ink Level PWB.
2 Panel inoperative If both the button and the LED are inoperative, replace the Sensor
Ink Level PWB.
2.3.3 Carriage Service Check
Disconnect the power cord. While holding the Control button, reconnect the power cord. A test print
page will start printing. Continue to hold the button until the printing starts, then release the button.
Observe the printer operation.
Item Part Action
1 Carriage Motor Check the motor for binds, or loose motor pulley.
Disconnect the carriage motor connector J6 from the Main PWB.
Check for correct resistance between pins 3-4 and 5-6 (refer to
section 7) on the motor cable. If the reading is incorrect, replace the
motor.
Check for motor pins shorted to the motor housing. If you find a pin
shorted to the housing, replace the motor. If the failure remains,
replace the Main PWB.
2 Main PWB Disconnect the carriage motor connector J6 from the Main PWB.
Check for drive voltage across drive pins 3-4 and 5-6. Check for
+42VDC across pins 1-2. If any voltages are incorrect, replace the
Main PWB.
3 Carriage Guide Rod Clean the carriage rod.
Note: Lubricate (refer to section 6) the rod and the carriage rod
bearing surface.
4 Carriage Timing Belt Check for worn, loose or broken parts. Check for obstructions
blocking carriage movement.
Idler Pulley Parts
Carriage Frame
5 Printhead Cable Be sure all connectors are fully seated. Check the cables for
damage.
Troubleshooting 7/99 DocuPrint C8/C6
2-8
2.3.4 Encoder Service Check (C8 Only)
Disconnect and then reconnect the power cord while observing the front LED.
Item Part Action
1 Encoder Strip Check the encoder strip for wear, dirt and grease. Clean as
necessary.
2 Encoder Sensor Check the encoder sensor and replace printer if defective.
2.3.5 Paper Feed Service Check
Clear any paper in the printer. Disconnect the power cord. While holding the Control button, reconnect
the power cord. Continue to hold the button until the test print starts printing, then release the button. A
test print page prints out.
Item Part Action
1 Paper Feed Motor Check the motor windings 3-4 and 5-6 for continuity. If incorrect,
replace the printer.
2 Main PWB Drive Disconnect the Paper Feed Motor connector J6 at the Main PWB.
Check for +42VDC at pins 1 and 2. If voltage is correct, replace the
printer.
3 Cable Check cable continuity. If incorrect, replace printer.
DocuPrint C8C6 7/99 Troubleshooting
2-9
2.3.6 Pump Assembly/Maintenance Station Service Check
The pump assembly operates when the paper feed motor operates to clean the ink from the ink cartridge
nozzles. The maintenance station seals the ink cartridge nozzles when it is not being used to prevent the
nozzles from drying
Item Part Action
1 Pump Assembly The pump assembly operates any time the paper feed motor
operates. Disconnect the tubing from the maintenance station.
Check that the pump is creating a vacuum of 280 mm + 50 mm.
Also check that the pump is exhausting ink into the ink pad. Verify
that the tubing is not clogged or pinched. Replace parts as
necessary.
3 Maintenance Station Check the maintenance station for worn or broken parts.
A worn cap can cause the print cartridge nozzles to dry and clog.
Check for loose or worn cap.
Check priming operation as follows:
1. Weigh the print head.
2. Install print head in printer.
3. Prime the print head (refer to C8 user guide for procedure).
4. Remove the print head.
5. Weigh the print head.
6. The difference between the original weight in step 1 and the
weight in step 5 must be > 0.26 grams. If not, replace
maintenance station.
2.3.7 Communications/Data Transmission Service Check
Ensure that you are using the correct an IEEE 1284-B TYPE interface cable and that it is not too long (up
to 6 feet for a parallel interface cable).
Ensure that the printer and the personal computer are connected together correctly and the appropriate
print drivers are installed. Send a file to be printed from the host computer.
Troubleshooting 7/99 DocuPrint C8/C6
2-10
Section 3
Image Quality
IQ1 Image Defect Entry RAP ............................................................... 3-2
DocuPrint C8/C6 7/99 Image Quality
3-1
IQ1 Image Defect Entry RAP
1. Print the Test Print:
a. Load paper into the Paper Tray.
b. Unplug the power cord from the rear of
the printer.
c. While pressing and holding the Control
button, plug the power cord into the rear
of the printer. Continue to hold the
Control button until the test print starts,
then release the button.
d. The printer prints the test print shown in
Figure 1. When the test print is
complete, the printer initializes and
returns to the Ready status.
e. If the test print fails to print, repeat steps
a through c.
2. Refer to the DEFECT Column in Table 1 that
best describes the image quality problem.
3. If the problem is with external input only, Figure 1. Test Print
refer to section 2 for troubleshooting.
Image Quality 7/99 DocuPrint C8/C6
3-2
Table 1. Image Quality Defects
Defect Cause Solution
Blank Print Printhead Perform the following:
1. Remove and reinstall the Print Head.
2. Connect the printer to a host computer and perform the
Printhead Clean procedure. Repeat up to 5 times as
necessary.
3. If the problem still exists, refer to 2.2.6 Print Quality
Problems.
White The Printhead nozzles may Perform the following:
horizontal be blocked.
1. Connect the printer to a host computer and perform the
lines and
Printhead Clean procedure. Repeat up to 5 times as
Streaks
necessary
2. Make another Test Print. If the print still has lines and
streaks repeat the above process up to 5 times.
3. If the problem still exists, replace the Print Head.
Print is 1. A non-recommended 1. Replace the paper with Xerox recommended paper.
faint or paper is being used or
missing the paper is damp.
2. Defective Cartridge or 2. Replace the Cartridge.
the ink supply may be
nearly empty.
3. The Print Head nozzles 3. Perform the following:
may be blocked.
a. Connect the printer to a host computer and perform
the Printhead Clean procedure. Repeat as necessary
b. Run a Test Print. If the print is still faint, Repeat the
process 5 more times.
c. If the problem is still not corrected replace the Print
Head.
Blurry or 1. Print Head alignment 1. Perform ADJ 2.0 Printhead Alignment. If the problem still
Jagged exists, refer to 2.2.6 Print Quality Problems.
vertical
lines 2. Paper 2. Insert different paper.
Print 1. Print off edge of media 1. Ensure that the Print Driver setup has the correct
image is selection of media size and type.
clipped or
2. Document margins may 2. Adjust margins in the application as necessary.
off edge of
exceed printer margins.
media
DocuPrint C8/C6 7/99 Image Quality
3-3
(THIS PAGE INTENTIONALLY LEFT BLANK)
Image Quality 7/99 DocuPrint C8/C6
3-4
Section 4
Repair/Adjustments
Repairs
REP 1.0 Printhead................................................................................... 4-2
REP 1.1 Input Paper Tray ....................................................................... 4-4
REP 1.2 Top Cover ................................................................................. 4-6
REP 1.3 Main Cover............................................................................... 4-8
REP 1.4 Exit Guide .............................................................................. 4-10
REP 1.5 Paper Feed / Carriage Assy. ................................................. 4-12
REP 1.6 LVPS Assembly ...................................................................... 4-14
REP 1.7 Main PWB ............................................................................... 4-16
REP 1.8 Waste Ink Pad......................................................................... 4-18
REP 1.9 Pump....................................................................................... 4-20
REP 1.10 Maintenance Station ............................................................. 4-22
REP 1.11 Linear Encoder Plus Clip (C8 Only)...................................... 4-24
REP 1.12 Paper Tray Switch (SW 1) .................................................... 4-26
REP 1.13 Printhead Ribbon Cable........................................................ 4-28
REP 1.14 Ink Level Sensor ................................................................... 4-32
REP 1.15 Carriage Latch Lever ............................................................ 4-34
Adjustments
ADJ 2.0 Printhead Alignment ................................................................ 4-36
DocuPrint C8/C6 7/99 Repairs/Adjustments
4-1
REP 1.0 Printhead
Parts List on PL 2.2
Removal
1. Hold the Control button for at least 2 seconds to move the Printhead to the center. Open the Top
Cover (PL 1.1).
CAUTION
Store the Printhead in the Storage Box. Leaving the Printhead removed for long periods of time will
cause the ink nozzles to dry out. Image quality defects or a blank page could result. If necessary,
prime the Printhead after reinstallation .
3. Move the green Printhead lock lever toward the front of the printer.
4. Lift and remove the Printhead. Store it in the Storage Box.
Printhead
Printhead
lock lever
Figure 1.
Repairs/Adjustments 7/99 DocuPrint C8/C6
4-2
Replacement
1. Replace the Printhead onto the Printhead vertical guide.
2. Move the green Printhead lock lever toward the rear of the printer.
3. Close the Top Cover.
4. Press and release the Control button to return the Printhead to the home position.
DocuPrint C8/C6 7/99 Repairs/Adjustments
4-3
REP 1.1 Input Paper Tray
Parts List on PL 1.1
Removal
4. Remove the Paper Output Shelf (PL 1.1).
2. While grasping the Paper Tray between thumb and fingers, press the Paper Tray front surface
toward the rear of the printer to release the tray (Figure 1).
4. Pull the Paper Tray up and out of the printer.
Figure 1.
Repairs/Adjustments 7/99 DocuPrint C8/C6
4-4
Replacement
1. Rotate the Cam to the upper position.
2. While holding the Paper Tray between thumb and fingers, press the Paper Tray front surface to
compress it toward the back of the Paper Tray.
3. Insert the Paper Tray into the printer ensuring the cam guide is behind the cam (Figure 2).
4. Insert the Paper Tray into the rear of the printer. Push down until seated in the printer.
5. Reinstall the Paper Output Shelf.
Cam must be
positioned here
Figure 2.
DocuPrint C8/C6 7/99 Repairs/Adjustments
4-5
REP 1.2 Top Cover
Parts List on PL 1.1
Removal
1. Open the Top Cover (PL 1.1).
2. Grasp the Top Cover at the outer edges where the pivot points attach to the Main Cover (Figure 1).
3. Simultaneously push the Top Cover away from the Main Cover until it detaches from the printer.
4. Remove the Top Cover.
Pivot Point
Top
Cover
Main
Cover
Pivot Point
Figure 1.
Repairs/Adjustments 7/99 DocuPrint C8/C6
4-6
Replacement
1. Position the Top Cover so that the pivots align with the corresponding pivots in the Main Cover.
2. Press behind the Top Cover to engage the pivots with the Main Cover pivots.
3. Close the Top Cover.
DocuPrint C8/C6 7/99 Repairs/Adjustments
4-7
REP 1.3 Main Cover
Parts List on PL 1.1
Removal
CAUTION
Store the Printhead in the Storage Box. Leaving the cartridge removed for long periods of time will
cause the ink nozzles to dry out. Image quality defects or a blank page could result. If necessary,
prime the Printhead after reinstallation .
1. Remove the Printhead (REP 1.0). Store the Printhead in the Storage Box.
WARNING
Disconnect the power cord from the wall outlet.
2. Remove the Paper Output Shelf (PL 1.1).
3. Remove the Paper Tray (REP 1.1).
4. Remove the Top Cover (REP 1.2).
5. Remove the two screws from the rear of the Main Cover (Figure 1).
NOTE: The front of the Main Cover has two latch tabs.
6. Grasp the Main Cover on both sides at the rear and pull up until the cover releases from the base.
7. Lift the Main Cover from the printer to remove.
Screws
Figure 1.
Repairs/Adjustments 7/99 DocuPrint C8/C6
4-8
Replacement
1. If previously disconnected, reconnect ribbon cable to the Main PWB.
2. Position the Main Cover on the printer until it is positioned correctly over the base.
3. Press down on the top of the Main Cover at all four corners until the cover latches into the base.
4. Reinstall the two mounting screws at the rear of the Main Cover.
5. Reinstall the following:
a. Top Cover (REP 1.2)
b. Paper Tray (REP 1.1)
c. Paper Output Shelf (PL 1.1)
d. Printhead (REP 1.0)
DocuPrint C8/C6 7/99 Repairs/Adjustments
4-9
REP 1.4 Exit Guide
Parts List on PL 2.2
Removal
CAUTION
Store the Printhead in the Storage Box. Leaving the Printhead removed for long periods of time will
cause the ink nozzles to dry out. Image quality defects or a blank page could result. If necessary,
prime the Printhead after reinstallation .
1. Center the Printhead (REP 1.0). Store the Printhead in the Storage Box.
WARNING
Disconnect the power cord from the wall outlet.
2. Remove the Paper Output Shelf (PL 1.1).
3. Remove the Paper Tray (REP 1.1).
4. Remove the Top Cover (REP 1.2).
5. Remove the Main Cover (REP 1.3).
6. Position both thumbs at the lower, front corners of the Exit Guide (Figure 1). Apply modest pressure
simultaneously toward the rear and up to unlatch the Exit Guide.
7. Rotate the guide approximately 90° up and toward the rear of the printer.
8. Lift the Exit Guide from the printer.
Exit Guide
Apply
pressure
here
Figure 1.
Repairs/Adjustments 7/99 DocuPrint C8/C6
4-10
Replacement
1. Hold the Exit Guide so the star wheels (10) are facing the front of the printer.
2. Lower the Exit Guide into the printer to engage the pivots with the slots in the Paper Feed / Carriage
Assembly.
3. Rotate the Exit Guide completely toward the front of the printer.
4. Position both thumbs at the lower, front corners of the Exit Guide (Figure 1). Apply moderate
pressure simultaneously toward the rear and down to latch the Exit Guide.
5. Reinstall the Main Cover (REP 1.3)
6. Reinstall the Top Cover (REP 1.2)
7. Reinstall the Paper Tray (REP 1.1)
8. Reinstall the Top Cover (REP 1.2).
9. Reinstall the Paper Output Shelf (PL 1.1).
DocuPrint C8/C6 7/99 Repairs/Adjustments
4-11
REP 1.5 Paper Feed / Carriage Assembly
Parts List on PL 2.1
Removal
CAUTION
Store the Printhead in the Storage Box. Leaving the Printhead removed for long periods of time will
cause the ink nozzles to dry out. Image quality defects or a blank page could result. If necessary,
prime the Printhead after reinstallation .
1. Remove the Printhead (REP 1.0). Store the Printhead in the Storage Box.
WARNING
Disconnect the power cord at the wall outlet.
6. Remove the Paper Output Shelf (PL 1.1).
7. Remove the Paper Tray (REP 1.1).
8. Remove the Top Cover (REP 1.2).
9. Remove the Main Cover (REP 1.3).
10. Remove the Exit Guide (REP 1.4).
11. Remove the screws (2) from the two front corners of the Paper Feed / Carriage Assembly (Figure 1).
8. Lift the front of the assembly slightly, then slide the assembly toward the front of the printer until it
detaches from the base.
9. Remove the assembly from the base.
CAUTION
Do not damage the ribbon cables at the front of the assembly.
Paper Feed/Carriage Assembly
Remove
screw
Remove
screw
Figure 1.
Repairs/Adjustments 7/99 DocuPrint C8/C6
4-12
Replacement
1. Place the Paper Feed / Carriage Assembly into position on the printer base. Slide the assembly
rearward until it engages with the rear mounts.
2. Reinstall the two front screws
3. Reconnect the ground wire to the ground plate on the right side of the printer.
5. Reconnect the ground wire to the ground plate on the left, front corner of the printer; tighten screw.
6. Reinstall the following:
a. Exit Guide (REP 1.4)
b. Main Cover (REP 1.3)
c. Top Cover (REP 1.2)
d. Paper Tray (REP 1.1)
e. Paper Output Shelf (PL 1.1)
f. Printhead (REP 1.0)
DocuPrint C8/C6 7/99 Repairs/Adjustments
4-13
REP 1.6 LVPS Assembly
Parts List on PL 1.1
Removal
CAUTION
Store the Printhead in the Storage Box. Leaving the Printhead removed for long periods of time will
cause the ink nozzles to dry out. Image quality defects or a blank page could result. If necessary,
prime the Printhead after reinstallation .
1. Remove the Printhead (REP 1.0). Store the Printhead in the Storage Box.
WARNING
Disconnect the power cord at the wall outlet.
2. Remove the Paper Output Shelf (PL 1.1).
3. Remove the Paper Tray (REP 1.1).
4. Remove the Top Cover (REP 1.2).
5. Remove the Main Cover (REP 1.3).
6. Remove the Exit guide (REP 1.4).
7. Remove the Paper Feed / Carriage Assembly (REP 1.5).
8. Lay the Paper Feed / Carriage Assembly on the front so that the bottom is facing out.
9. Disconnect LVPS power cord connector CN1 from the Main PWB (Figure 1).
10. Remove the two mounting screws.
11. Note the routing of the tubing behind the LVPS and remove the LVPS from the Paper Feed/Carriage
Assembly.
Top View of LVPS
Tubing
LVPS
Screws
CN1
Figure 1
Repairs/Adjustments 7/99 DocuPrint C8/C6
4-14
Replacement
CAUTION
Do not pinch the tubing or damage in any way while reinstalling the LVPS.
1. Position the LVPS into the Paper Feed/Carriage Assembly and secure with two mounting screws..
2. Reconnect the LVPS power cord connector CN1 to the Main PWB.
5. Replace the following:
a. Paper Feed / Carriage Assembly
(REP 1.5)
b. Exit Guide (REP 1.4)
c. Main Cover (REP 1.3)
d. Top Cover (REP 1.2)
e. Paper Tray (REP 1.1)
f. Paper Output Shelf (PL 1.1)
g. Printhead (REP 1.0)
DocuPrint C8/C6 7/99 Repairs/Adjustments
4-15
REP 1.7 Main PWB
Parts List on PL 1.1
Removal
CAUTION
Store the Printhead in the Storage Box. Leaving the Printhead removed for long periods of time will
cause the ink nozzles to dry out. Image quality defects or a blank page could result. If necessary,
prime the Printhead after reinstallation .
1. Remove the Printhead (REP 1.0). Store the cartridge in the Storage Box.
WARNING
Disconnect the power cord at the wall outlet.
2. Remove the Paper Output Shelf (PL 1.1).
3. Remove the Paper Tray (REP 1.1).
4. Remove the Top Cover (REP 1.2).
5. Remove the Main Cover (REP 1.3).
6. Remove the Exit Guise (REP 1.4).
7. Remove the Paper Feed / Carriage Assembly (REP 1.5).
8. Disconnect the LVPS connector CN1 and J8 from the Main PWB (Figure 1).
9. Remove the two mounting screws securing the Main Board mounting plate to the Paper
Feed/Carriage Assembly (Figure 1).
10. Carefully move the Main PWB away from the Paper Feed/Carriage Assembly just enough to allow
the cables to be disconnected.
11. Disconnect all cables connecting to the Main PWB.
12. Remove the Main PWB.
Repairs/Adjustments 7/99 DocuPrint C8/C6
4-16
Replacement
1. Position the Main PWB close to the Paper Feed/Carriage Assembly.
2. Reinstall all connectors to the Main PWB except the LVPS connector CN1 and J8.
3. Position the Main PWB against the bottom of the Paper Feed/Carriage Assembly, making sure that
the guide plate is inserted behind the plastic tab.
4. Reinstall the two mounting screws.
5. Reconnect connector CN1 and J8 to the Main PWB.
6. If previously unsecured, resecure ribbon cable and ferrite to the printer base.
7. Replace the following:
a. Paper Feed / Carriage Assembly
(REP 1.5)
b. Exit Guide (REP 1.4)
c. Main Cover (REP 1.3)
d. Top Cover (REP 1.2)
e. Paper Tray (REP 1.1)
f. Paper Output Shelf (PL 1.1)
Screws
g. Printhead (REP 1.0)
CN1
Guide Main PWB
Bracket
Figure 1
DocuPrint C8/C6 7/99 Repairs/Adjustments
4-17
REP 1.8 Waste Ink Pad
Parts List on PL 1.1
Removal
CAUTION
Store the Printhead in the Storage Box. Leaving the Printhead removed for long periods of time will
cause the ink nozzles to dry out. Image quality defects or a blank page could result. If necessary,
prime the Printhead after reinstallation .
1. Remove the Printhead (REP 1.0). Store the Printhead in the Storage Box.
WARNING
Disconnect the power cord at the wall outlet.
2. Remove the following:
a. Paper Output Shelf (PL 1.1)
b. Paper Tray (REP 1.1)
c. Top Cover (REP 1.2)
d. Main Cover (REP 1.3)
e. Paper Feed / Carriage Assembly
(REP 1.5)
f. Exit guide (REP 1.4)
3. Remove Waste Ink Pad retainer by releasing the four locking tabs with screwdriver or other similar
tool (Figure. 1).
Ink Pad
FRONT
Figure 1.
Repairs/Adjustments 7/99 DocuPrint C8/C6
4-18
Replacement
1. Ensure flange on one end of the pad retainer is toward the right side of the printer.
2. Snap the retainer into position.
3. Replace the following:
a. Exit Guide (REP 1.4)
b. Paper Feed / Carriage Assembly
(REP 1.5)
c. Main Cover (REP 1.3)
d. Top Cover (REP 1.2)
e. Paper Tray (REP 1.1)
f. Paper Output Shelf (PL 1.1)
g. Printhead (REP 1.0)
DocuPrint C8/C6 7/99 Repairs/Adjustments
4-19
REP 1.9 Pump
Parts List on PL 2.1
Removal
CAUTION
Store the Printhead in the Storage Box. Leaving the Printhead removed for long periods of time will
cause the ink nozzles to dry out. Image quality defects or a blank page could result. If necessary,
prime the Printhead after reinstallation .
1. Remove the Printhead (REP 1.0). Store the Printhead in the Storage Box.
WARNING
Disconnect the power cord at the wall outlet.
2. Remove the following:
a. Paper Output Shelf (PL 1.1)
b. Paper Tray (REP 1.1)
c. Top Cover (REP 1.2)
d. Main Cover (REP 1.3)
e. Exit Guide (REP 1.4)
f. Paper Feed / Carriage Assembly
(REP 1.5)
3. Remove the Pump from the Paper Feed / Carriage Assembly.
a. Disconnect tube at inlet port of Maintenance Station (Figure 1).
Note: Do not remove or otherwise disturb the tubing from the printer.
b. Press tabs at top and bottom of pump that secure pump to motor.
(Figure 2).
c. Slide pump from motor shaft.
Tabs
Pump
Figure 1
Repairs/Adjustments 7/99 DocuPrint C8/C6
4-20
Replacement
1. Slide pump onto the motor shaft.
2. Reinsert the two mounting tabs into the mounting bracket.
CAUTION
Ensure the pump tubing is not kinked or otherwise restricted during reinstallation.
3. Reconnect the tube to the inlet port on the pump.
5. Reinstall the following:
a. Paper Feed / Carriage Assembly
(REP 1.5)
b. Exit Guide (REP 1.4)
c. Main Cover (REP 1.3)
d. Top Cover (REP 1.2)
e. Paper Tray (REP 1.1)
f. Paper Output Shelf (PL 1.1)
g. Printhead (REP 1.0)
DocuPrint C8/C6 7/99 Repairs/Adjustments
4-21
REP 1.10 Maintenance Station
Parts List on PL 2.1
Removal
CAUTION
Store the Printhead in the Storage Box. Leaving the Printhead removed for long periods of time will
cause the ink nozzles to dry out. Image quality problems or a blank page could result. If necessary,
prime the Printhead after reinstallation.
1. Remove the Printhead (REP 1.0). Store the Printhead in the Storage Box.
WARNING
Disconnect the power cord at the wall outlet.
3. Remove the following:
a. Paper Output Shelf (PL 1.1)
b. Paper Tray (REP 1.1)
c. Top Cover (REP 1.2)
d. Main Cover (REP 1.3)
4. Disconnect the tube from the Maintenance Station.
5. Push the Printhead carriage to the extreme right side of the printer.
6. Remove the mounting screw (Figure 1).
7. Lift and hold the left side of the paper pressure baffle approximately six millimeters (mm) away from
the Maintenance Station.
8. Slide the Maintenance Station toward the front of the printer to disengage the mounting tabs, then lift
upward to remove Maintenance Station from the printer.
Mounting
Screw
Paper
Pressure
Baffle
Maintenance Station
Figure 1.
Repairs/Adjustments 7/99 DocuPrint C8/C6
4-22
Replacement
CAUTION
Ensure the Printhead carriage is positioned to the extreme right side of the printer.
1. Lift and hold the left side of the paper pressure baffle approximately six millimeters away from the
Maintenance Station.
2. Lower the Maintenance Station into position to insert the mounting tabs, pressing down and toward
the front of the printer.
3. Slide the Maintenance Station toward the rear of the printer to engage the mounting tabs.
4. Secure with mounting screw
(machine threads).
5. Connect the tube to its mating connector on the Maintenance Station.
6. Reinstall the following:
a. Main Cover (REP 1.3)
b. Top Cover (REP 1.2)
c. Paper Tray (REP 1.1)
d. Paper Output Shelf (PL 1.1)
e. Printhead (REP 1.0)
DocuPrint C8/C6 7/99 Repairs/Adjustments