Oki Pacemark 4410 Service Handbook page 145

A Printer does not operate at all, while the Alarm Lamp is on and "ERROR FUSE" is displayed on LCD.
• The cable to PMA-Board CN3 connected properly?
Yes No
• Connect the cable properly.
• The cable to Printer Unit Connector DCOUT2 connected properly?
Yes No
• Connect the cable properly.
• PMA-Board F1 and F2 mounted?
Yes No
• Install them.
• PMA-Board F1 and F2 blown?
No Yes
• Replace the blown-out fuse. Recovered?
No
• Turn Printer on, with PMA-Board CN2 and CN6 unplugged. Are the fuses blown?
No
• Turn Printer on, with PMA-Board CN2 unplugged. Are the fuses blown?
40496501TH Draft Version
Yes
• End
Yes
• Which fuse is blown, F1 or F2?
F1 F2
• Short circuit occurs at PDA-Board, between HTA1-5 pin and 4
pin and between HTA1-1 pin and 2 pin?
No Yes
• Replace PDA-Board.
• Replace PMA-Board.
• Replace PMA-Board.
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