OKI MB470MFP

Troubleshooting. Jam Error. Paper feed jam

N		Yes	No
1	Does a jam error occur when turning on the power?	step 2
2	Is there any paper in the entrance sensor?	Remove the paper	step 3
3	Does the entrance sensor lever work normally? (It moves freely by touching.)	Clean the entrance sensor of the sensor board or high-voltage power, or replace the high-voltage power/ sensor board.	Replace the entrance sensor lever.
4	A jam error occurs after feeding paper.	step 5
5	Does the entrance sensor lever work normally? (It moves freely by touching.)	Clean the entrance sensor of the sensor board or high-voltage power, or replace the high-voltage power/ sensor board.	Replace the entrance sensor lever.
6	Does the paper feed roller rotate?	Set the paper cassette appropriately.	step 7
7	Does the paper feed clutch work normally?	Replace the paper feed roller and shaft.	step 8
8	Is HCLT connector of the main board appropriately connected?	step 9	Connect HCLT connector appropriately.
9	Is the coil resistance of the paper feed clutch (Normal resistance: Pin1, Pin2, and approx. 192 ) normally?	step 10	Replace the paper feed clutch.
10	Replace the main board.

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