Jam Detection Timing / Action To Be Taken - Epson AcuLaser C1900 Service Manual

EPSON AcuLaser C1900/AcuLaser C900

3.4.3 Jam Detection Timing / Action to be Taken

JAM IN MANUAL PAPER FEED AREA
Detection Timing
Table 3-2. Detection Timing
Category
Jam detection in Even on the lapse of a predetermined time after turning on of the
manual paper feed manual paper feed solenoid (SL1), the front end of the paper does not
area intercept the light to the timing roller front sensor (PC2).
Size error detection The light to the timing roller front sensor (PC2) is not transmitted
in MP tray even on the lapse of a predetermined time after the paper intercepted
the light to the sensor (PC2).
Solution
Electric parts which may cause paper jam
Timing Roller Front Sensor (PC2)
•
• Manual Paper Feed Solenoid (SL1)
• Engine Board (PWB-A)
Step Action
1 Initial checking
2 Check the operation of PC2
3 Check the operation of SL1
4 Replace the PWB-A.
Troubleshooting
Explanation
Table 3-3.
WARNING DIAGRAM
Refer to
Control Signal
p.159 -
p.162 PC2_ON
p.163 SL1_REM
- -
Check Points and Remedy for Paper Jam
JAM IN SECONDARY TRANSFER AREA
Detection Timing
Table 3-4. Detection Timing
Category
Jam detection in The light to the timing roller front sensor (PC2) is not transmitted
secondary transfer even on the lapse of a predetermined time after the paper intercepted
area the light to the sensor (PC2).
The light to the fusing loop detection sensor (PC11) is not
intercepted even after the paper has passed the interception position.
Remaining paper The light to the timing roller front sensor (PC2) is intercepted when
detection in the main switch is turned on, the door and cover are opened and
secondary transfer closed or a jam or trouble is cleared.
area
Solution
Electric parts which may cause paper jam
Timing Roller Front Sensor (PC2)
•
• Fusing Loop Detection Sensor (PC11)
• Engine Board (PWB-A)
Step Action
1 Initial checking
2 Check the operation of PC2
3 Check the operation of PC11
4 Replace the PWB-A.
Revision B
Explanation
Table 3-5.
WARNING DIAGRAM
Refer to
Control Signal
p.159 -
p.162 PC2_ON
p.162 PC11_ON
- -
160