Oki OKIPAGE 8c Plus Maintenance Manual page 124

4
Image Drum Unit (IDU) Up/Down Error
• Turn off power to the page printer, wait a few seconds, then turn on power again.
• Each image drum unit (IDU) motor rotating for printout?
• No Is the value of IDU motor resistance about 7.1 ohms?
No Replace the defective IDU motor.
• Yes Is +32V being supplied on the FU2 of the engine board?
No Replace the low-voltage power supply.
• Yes Check the connection of the cables or replace the engine board.
• Yes Each IDU sensor lever work correctly?
• No Check the gear engagement and the sensor lever operation or replace the gear or the sensor
lever.
• Yes Is each IDU sensor work correctly?
(Cover up for each IDU sensor to shut off light and check its signal on the related pin of the
PXFI connector of the junction board (PXF PCB).)
Pin B13 for the yellow IDU sensor Pin A13 for the magenta IDU sensor Pin B14 for the
cyan IDU sensor Pin A14 for the black IDU sensor
• No Replace the junction board (PXF PCB).
• Yes Check the connection of the cables between the junction board (PXF PCB) and the engine
board (PX4 PCB) or replace the engine board.
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