First there were streaks of no printing on one side, now printing a black test page results in a little printing on the left, none in the middle, and very little on the right. Black cartridge is new and pretty full. The streaks remain. Color seems to be OK.
Most of the time when I find this happening on a printer, not just Ricoh's it turns out to be the PCU (photo conductor unit). The color PCU is one unit and the black is a seperate unit. Hope this helps.
The following is taken from the service manual I hope it helps thanks J
4.3.1 BLANK PRINT
Symptom Possible cause Necessary actions
Defective laser scanning unit Replace the laser scanning
unit.
Defective PCU Replace the PCU.
Defective transfer belt unit Replace the transfer belt
unit.
Defective transfer belt
tension unit
Replace the transfer belt
tension unit.
Defective toner cartridge
drive unit
Replace the toner cartridge
drive unit.
Defective toner cartridge
agitator
Replace the toner cartridge.
Incorrect action of transfer
roller
Check the guide and the
transfer roller.
Defective high voltage
supply board
Replace the high voltage
supply board.
No image is printed.
Defective engine control
board
Replace the engine control
board
4.3.7 WHITE HORIZONTAL LINES OR BANDS
Symptom Possible cause Necessary actions
Defective PCU Replace the PCU.
Defective transfer belt unit Replace the transfer belt
unit.
White lines or bands appear
in images of all toner colors.
They are vertical to the
paper feed direction. Defective transfer roller Replace the transfer roller.
4.3.8 MISSING PARTS OF IMAGES
Symptom Possible cause Necessary actions
Defective PCU Replace the PCU.
Defective transfer belt unit Replace the transfer belt
unit.
Defective transfer roller Replace the transfer roller.
Some parts of images are
missing.
Defective fusing unit Replace the fusing unit.
4.3.11 DARK IRREGULAR STREAKS ON PRINTS
Symptom Possible cause Necessary actions
Unexpected streaks appear
at irregular intervals.
Defective transfer belt Replace the transfer belt
unit.
4.3.17 NO PRINTING ON PAPER EDGE
Symptom Possible cause Necessary actions
Defective PCU Replace the PCU.
Defective toner cartridge Replace the toner cartridge.
Defective transfer belt unit Replace the transfer belt
unit.
images are not printed in the
areas around the paper
edges.
Transfer belt not contacting
PCU
Check the belt tension unit.
Try these hope I could help Thanks J
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I have the same problem with a CL3500 model. Does some part need replacing?
Mine turned out to be the black drum, a slide in/out part. Apparently the drums are designed to have a limited lifetime. If colors are a problem, then the three color drums come together as a separate unit.
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