Epson AcuLaser C1900, Service Manual

Page: 161 / 270

EPSON AcuLaser C1900/AcuLaser C900 Revision B
Troubleshooting Check Points and Remedy for Paper Jam 161
FUSER AREA JAM / PAPER EJECT AREA JAM
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Detection Timing
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Solution
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Electric parts which can cause the jam:
• Paper Eject Sensor (PC10)
• Engine Board (PWB-A)
500-SHEET CASSETTE UNIT PAPER EJECT AREA
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Detection Timing
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Solution
„
Electric parts which can cause the jam:
• 2nd Paper Feed Solenoid (SL7)
• Timing Roller Front Sensor (PC2)
• 500-sheet Cassette Unit Control Board (PWB-A)
Table 3-6. Detection Timing
Category Explanation
Paper eject area jam The light to the paper eject sensor (PC10) is not transmitted even
when a predetermined time has passed since the paper intercepted the
light to the sensor (PC10).
Retaining paper
detection in paper
eject area The light to the paper eject sensor (PC10) is intercepted when the
main switch is turned on, the door and cover are opened and closed
or a jam or trouble is cleared.
Table 3-7.
Step Action Refer to
WARNING DIAGRAM
Control Signal
1 Initial checking p.159 -
2 Check the operation of PC10. p.162 PC10_ON
3 Replace the PWB-A. - -
Table 3-8. Detection Timing
Category Explanation
Paper feed area jam Even on the lapse of a predetermined time after turning on of the 2nd
paper feed solenoid (SL7), the front end of the paper does not
intercept the light to the timing roller front sensor (PC2).
Remaining paper
detection in 2nd
tray The light to the timing roller front sensor (PC2) is intercepted when
the main switch is turned on, the door and cover are opened and
closed or a jam or trouble is cleared.
Table 3-9.
Step Action Refer to
WARNING DIAGRAM
Control Signal
1 Initial checking p.159 -
2 Check the operation of PC2. p.162 PC2_ON
3 Check the operation of SL7. p.163 SL7_REM
4 Replace the PWB-A. - -