Paper Feed Jam (Error Code 391: 1St Tray); Does A Jam Error Occur When Turning On The Power; Jam Occurs Immediately After The Paper Feed Is Started. (1St Tray) - Oki MB461 Maintenance Manual

Oki Data CONFIDENTIAL

8.5.5. (3) Paper feed jam (Error code 391: 1st tray)

(3-1) Does a jam error occur when turning on the power?

Check item
(3-1-1) Check condition of paper running path
Paper running path Open the front cover check if paper is not
of the front unit jammed in the paper running path.
(3-1-2) Check condition of the mechanical parts
Entrance sensor Does the entrance sensor lever work normally?
(It moves freely by touching.)
Clean a sensor.

(3-2) Jam occurs immediately after the paper feed is started. (1st tray)

Check item
(3-2-1) Check condition of paper running path
Paper running path Open the front cover check if paper is not
of the front unit jammed in the paper running path.
(3-2-2) Check condition of the mechanical parts
Entrance sensor Is the paper sent to the entrance sensor lever?
Does the entrance sensor lever work normally?
(It moves freely by touching.)
Is the IN_WR connector of the main board
connected properly?
44871001TH Rev.6
Check operation
Actions for NG
results
Remove the
paper
Replace the
entrance sensor
lever.
replace the main
board.
Check operation
Actions for NG
results
Remove the
paper
Replace the
paper feed roller,
pick-up roller or
paper cassette.
Replace the
entrance sensor
lever.
Connect the
IN_WR connector
properly.
Check item Check operation
(3-2-3) Check the paper feed roller rotate.
Casette Does the paper feed roller rotate?
Paper feed roller Does the paper feed clutch work normally?
and shaft.
Connector Is HCLT connector of the main board
appropriately connected?
Clutch Is the coil resistance of the paper feed clutch
(Normal resistance: Pin1, Pin2, and approx.
192 ) normally?
8. TROUBLESHOOTING PROCEDURES
Actions for NG
results
YES:
Set the paper
cassette
appropriately.
NO:
Go next question.
YES:
Replace the
paper feed roller
and shaft.
NO:
Go next question.
YES:
Go next question.
NO:
Connect HCLT
connector
appropriately.
YES:
Replace the main
board.
NO:
Replace the
paper feed
clutch.
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