Oki ES9160, Maintenance Manual

Page: 536 / 1087

ES9160 MFP / ES9170 MFP © 2012 OKI DATA CORPORATION All rights reserved
ERROR CODE AND TROUBLESHOOTING
8 - 56
[E120] Bypass misfeeding
Classification Error content
Paper misfeeding
Jam not reaching the 1st transport sensor
Proce
dure
Check item Result Measure
Next
Step
1 Open the Automatic
duplexing unit. Is there
any paper in front of the
1st transport sensor? Yes Remove the paper.
No 2
2 Is the 1st transport sensor
working?
(Perform the input check
in the test mode: 03-
[FAX]OFF/[6]/[A]) Yes 3
No • Check if the connector of the 1st transport
sensor is disconnected.
• Check if the connector CN316 on the LGC
board is disconnected.
• Check if the connector pins are
disconnected and the harnesses are open
circuited.
• Check if the conductor pattern on the LGC
board is short circuited or open circuited.
• Replace the 1st transport sensor.
• Replace the LGC board.
3 Is the bypass feed clutch
working? (Perform the
output check in the test
mode: 03-204)
Is the bypass paper
sensor working? (Perform
the input check in the test
mode: 03-[FAX]OFF/[1]/
[D]) Yes 4
No • Check if the connector of the bypass feed
clutch and bypass paper sensor are
disconnected.
• Check if the connector CN311 on the LGC
board is disconnected.
• Check if the connector pins are
disconnected and the harnesses are open
circuited.
• Check if the conductor pattern on the LGC
board is short circuited or open circuited.
• Replace the bypass feed clutch and bypass
paper sensor.
• Replace the LGC board.
4 Bypass feed roller
Separation pad • Check the bypass feed roller and separation
pad. Replace them if they are worn out.
Parts to be replaced Remark
1st transport sensor
LGC board
Bypass feed clutch
Bypass paper sensor
Bypass feed roller
Separation pad