Oki PACEMARK 4410 Service Manual page 151

E Printer operates normally but characters are not printed.
• Self Diagnosis Printing conducted normally?
Yes No
• Replace PMA-Board.
• The interface cable connected properly?
Yes No
• Connect the cable properly.
• Replace the interface cable. Recovered?
No Yes
• End
• The interface is parallel or serial?
Parallel Serial
• The serial interface setting adjusted for the system?
Yes
• Check -12V output at PMA-Board.
Slide Control Block toward outside without unplugging the cables. (Stop sliding when
the cables becomes straight. Do not extend the cables by force.)
Check the voltage between CN5-1 pin and CN5-8 pin. Is -12V output?
Yes
• The cable between PMA-Board CN6 and PHA-Board CN1 connected properly?
Yes No
• Connect the cable properly.
• Replace the junction cable between PMA-Board CN6 and PHA-Board CN1. Recovered?
No
• Set it properly.
No
• Check conduction at the 8 pin on the junction cable between PMA-Board
CN5 and Power Supply Unit Connector DCOUT2.
• Normal conduction?
Yes No
• Replace the cable.
• Replace Power Supply Unit.
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