Misfeed Detection Timing And Troubleshooting Procedures; Paper Take-Up/Transport Misfeed - NEC NEFAX 671 Service Manual

2-7.

Misfeed Detection Timing and Troubleshooting Procedures

(1)

Paper Take-Up/Transport Misfeed

<Detection Timing>
Type
MP tray Pick-
up Jam
2nd tray Pick- The Paper Take-Up Switch does not turn on after the predetermined period
up Jam of time has elapsed after paper take-up began.
Bypass tray
Pick-up Jam
The Exit Sensor is not blocked after the predetermined period of time has
Separator elapsed after the Paper Take-Up Switch is turned on.
Jam The Paper Take-Up Switch is not turned off after the predetermined period
of time has elapsed after the Paper Take-Up Switch is turned on.
<Troubleshooting Procedures>
Paper Take-Up Switch (S1)
Exit Sensor (PS1)
Paper Take-Up Solenoid (SL1)
Step Action
1 Initial checks
2 SL1 solenoid check
3 S1 switch check
4 PS1 sensor check
5 Replace PWB-P.
Description
Relevant Electrical Parts
Controller/Mechanical Control Board (PWB-P)
Ref. Page
Control Signal
☞ T-6
☞ T-2
PWB-P MPJ3P-2
PWB-P
☞ T-2
MPJ10P-2
PWB-P
☞ T-1
MPJ8P-3
–
T-11
WIRING DIAGRAM
Location
(Electric Parts)
– –
I-6 to 7
G-8 to 9
E to F-7 to 8
– –