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TROUBLESHOOTING
COPY QUALITY TROUBLESHOOTING
When there is a copy quality problem, do the following.
Print the nozzle pattern with user function 35.
In this test pattern, the machine uses all the nozzles installed in the printer
head. If the test printout shows any defects such as thin, unclear printing or
no printing, do the printer head cleaning procedure more than 5 times (refer
to the Operation Manual). If the problem still remains, replace the cartridge.
Printed by the first nozzle
Printed by the 128th nozzle
Black Cartridge
6.1.1. Blank Copies
Possible Cause (Printer):
Malfunction in the ink jet printing mechanism
Defective printer head
Action:
1. Print the nozzle test pattern and do the printer head cleaning procedure
more than 5 times (refer to the Operation Manual). If the problem still re-
mains, replace the cartridge.
2. Clean the place where the ink cartridge contacts the carriage with a soft
dry cloth.
Important: Do not touch the printer head.
3. Check the flat cable connection between the FDU (CN3) and the carriage.
Also, check the harness connection between the IJC (CN2 and CN13)
and the FDU (CN2 and CN1). Replace the cable if it is damaged.
H505T519.wmf
Printed by the first nozzle
Printed by the 138th nozzle
Color Cartridge
6-2
November 28th, 1995
H505T520.wmf
Yellow
Magenta
Cyan
Black
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