Oki Pacemark 4410 Service Handbook page 147

B Printer goes off during operation.
• Turn Printer on, with PMA-Board CN3 cable unplugged. Printer goes off during operation?
No Yes
• Replace Power Supply Unit.
• Turn Printer on, with PMA-Board CN2, CN6 and PDA-Board CN5 unplugged. Printer goes off
during operation?
No Yes
• Short circuit occurs at PDA-Board, between THA1-5 pin and 4 pin and between HTA1-
1 pin and 2 pin?
No
• Replace PMA-Board.
• Turn Printer on, with PMA-Board CN2 and CN6 unplugged. Printer goes off during operation?
No Yes
• Replace Print Head. Recovered?
No
• Replace Head Cable.
• Turn Printer on, with PMA-Board CN2 and PDA-Board CN5 unplugged. Printer goes off during
operation?
No Yes
• No junction cable failure at Bail/Path-Change/LF motors, and between PMA-Board
and PHA Board?
No
• Replace PHA-Board.
• No junction cable failure at Ribbon/Space/Auto-Gap motors, and between PMA-Board and PRA
Board?
No Yes
• Replace the damaged cable, if any.
• Replace PRA-Board.
40496501TH Draft Version
Yes
• Replace PDA-Board.
Yes
• End
Yes
• Replace the damaged cable, if any.
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