Oki OL1200, Service Manual, Page: 240 / 272

Page: 149
Service Guide OL1200
Chapter C High Capacity Second Paper Feeder
4.3.2
Troubleshooting Flow
( JAM error )
Paper Input Jam
Does paper jam at the inlet when the power is turned on?
YES Is the paper located above the sensor plate (Inlet)?
YES Remove the paper.
NO Is the sensor plate (Inlet) operating normally?
NO Replace the sensor plate (Inlet).
YES Replace the power/sensor board or inlet sensor.
NO When the paper is fed in, does the paper input jam occur?
YES Is the paper being fed to above sensor plate (Inlet)?
YES Is the sensor plate (Inlet) operating normally?
NO Replace the sensor plate. (Inlet)
YES Clean the inlet sensor on the power/sensor board or
replace the power/sensor board or inlet sensor.
NO Replace the hopping roller shaft assy or paper cassette.
NO Is the hopping roller shaft rotating?
YES Set the paper properly.
NO Is the stepping motor turning?
YES Replace the one-way clutch gear on the hopping roller shaft
assembly.
NO Is the connector cable being connected properly?
NO Connect the connector cable properly.
YES Check the coil resistance (approx. 4.3ý) of the stepping motor.
Is it normal?