44292401TH Rev.1
179 /
Oki Data CONFIDENTIAL
TROUBLESHOOTING
17.3 Solution
17.3.1
Initial check items
• When a media misfeed occurs, first make checks of the following initial check items.
17.3.2
Misfeed at tray1 media feed section
A. Detection timing
B. Action
Check item
Action
Does media meet product specifications?
• Change media.
Is media curled, wavy, or damp.
• Change media.
• Instruct user in correct media storage.
Is a foreign matter present along the media path, or is
the media path deformed or worn?
• Clean or change the media path.
Are rolls/rollers dirty, deformed, or worn?
• Clean or change the defective roll/roller.
Are the edge guide and trailing edge stop at correct
position to accommodate the media?
• Set as necessary.
Are actuators found operational as checked for correct
operation?
• Correct or change the defective actuator.
Type
Description
Detection of misfeed
at media feed section
The leading edge of the media does not block the registration sensor (PS2)
even after the lapse of a predetermined period of time after the tray1 media
feed solenoid (SD1) has been energized.
Relevant electrical parts
Registration sensor (PS2)
Tray1 media feed solenoid (SD1)
Printer control board (PRCB)
Step
Action
WIRING DIAGRAM
Control signal
Location (electri-
cal component)
1
Initial check items
2
Check the PRCB connector for proper con-
nection and correct as necessary.
3
PS2 sensor check.
PRCB PJ12-6 (ON)
C-3
4
SD1 operation check.
PRCB PJ10-2 (REM)
C-10
5
Change PRCB.
17.3.3
Misfeed at 2nd transfer section
A. Detection timing
B. Action
Type
Description
Detection of misfeed
at 2nd transfer
section
The media does not unblock the registration sensor (PS2) even after the lapse
of a predetermined period of time after the registration roller solenoid (SD2) has
been deenergized.
The 2nd image transfer retraction position sensor (PS3) is not blocked by the
media that has moved past the position, at which the sensor is blocked.
Detection of media
left in 2nd transfer
section
The registration sensor (PS2) is blocked when the power switch is turned ON, a
cover is opened and closed, or a misfeed or malfunction is reset.
The 2nd image transfer retraction position sensor (PS3) is blocked when the
power switch is turned ON, a cover is opened and closed, or a misfeed or mal-
function is reset.
Relevant electrical parts
Registration sensor (PS2)
2nd image transfer retraction position sensor (PS3)
Registration roller solenoid (SD2)
Printer control board (PRCB)
Step
Action
WIRING DIAGRAM
Control signal
Location (electri-
cal component)
1
Initial check items
2
Check the PRCB connector for proper con-
nection and correct as necessary.
3
PS2 sensor check.
PRCB PJ12-6 (ON)
C-3
4
PS3 sensor check.
PRCB PJ12-3 (ON)
C-2
5
SD2 operation check.
PRCB PJ10-4 (REM)
C-9
6
Change PRCB.
16.3 Solution
16.3.1
Initial check items
16.3.2
Misfeed at tray1 media feed section
16.3.3
Misfeed at 2nd transfer section
Summary of Contents for MC160MFP
Page 1: ...MC160MFP Maintenance Manual 011710A...
Page 18: ...44292401TH Rev 1 17 Oki Data CONFIDENTIAL MC160n Main body THEORY OF OPERATION...
Page 55: ...44292401TH Rev 1 54 Oki Data CONFIDENTIAL Auto Document Feeder Unit THEORY OF OPERARTION...
Page 61: ...44292401TH Rev 1 60 Oki Data CONFIDENTIAL MC160n Main body FIELD SERVICE...
