Oki Data CONFIDENTIAL
44871001TH Rev.6
10-21
10. APPENDIX
• (Jam Error)
Paper Feed Jam
• Does a jam occur around the entrance when turning on the power?
• Yes
Is the paper on the entrance sensor lever?
• Yes
Remove the paper.
• No
Does the entrance sensor lever work normally?
• No
Replace the entrance sensor lever.
• Yes
Replace the main board or entrance sensor.
• NO
Does the paper inlet jam occur when paper is fed.
• Yes
Is the paper on the entrance sensor lever?
• Yes
Does the entrance sensor plate work normally?
• No
Replace the entrance sensor lever.
• Yes
Clean the entrance sensor, or replace the main board or
entrance sensor.
• No
Replace the hopping roller shaft Assy or paper cassette.
• No
Are the hopping roller and paper feed roller rotated?
• Yes
Load the paper appropriately.
• No
Is the pulse motor rotated?
• Yes
Replace the hopping roller shaft Assy or the one-way clutch
gear of the paper-feed roller Assy.
• No
Is the connector appropriately connected?
• No
Connect the connector appropriately.
• Yes
Check the coil resistance of the pulse motor.Is it normal (3.4
or 5
)?
• No
Replace the stepping motor.
• Yes
Replace the GOG board.
10.2.6 Connection Diagram
10.2.6.1 Connection diagram
10.2.6.2 Board Arrangement
GOG board
M
MAIN1
Connection to the printer
MOTOR
CL1
Regist clutch
CL2
Feed clutch
SNS12
Entrance sensor
Hopping sensor
Paper end sensor
SNS03
MAIN1
FLASH
1 4
7 1
3 1
SNS03
SNS12
CL1
CL2
MOTOR
2
1
3
1
4
1
8
1
Summary of Contents for MB461MFP
Page 1: ...MB461 MB471 MB491 MB491 MB491 LP MPS4200mb MPS4700mb Maintenance Manual 031314C ...
Page 72: ...Oki Data CONFIDENTIAL 44871001TH Rev 6 3 21 3 MFP INSTALLATION Sample MB471 Sample MB491 ...
Page 114: ...44871001TH Rev 6 4 36 Oki Data CONFIDENTIAL 4 REPLACEMENT OF PARTS ...
Page 138: ...Oki Data CONFIDENTIAL 5 LUBRICATING POINT 5 1 Lubrication point 5 2 ...