OKIDATA OL400e Series, Service Manual

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NO Is the drum rotating?
NO Is connector CN2 on the main controller board properly
connected?
NO Connect connector CN2 properly.
YES Is the coil resistance of the drum motor normal, 32 ohms?
NO Replace the drum motor.
YES Replace the main controller board.
YES Is the transfer roller rotating properly?
NO Check the transfer roller gear.
CAUTION: Do not touch the transfer roller! Touching the transfer
roller may cause incomplete toner transfer, resulting in
faded output.
YES Are the fusing unit rollers rotating?
NO Replace the transfer roller gear.
YES Is the image drum cartridge installed properly?
NO Properly install the image drum cartridge.
YES Clean the inlet sensor on the power supply board.
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