Epson AcuLaser C1900, Service Manual

Page: 163 / 270

EPSON AcuLaser C1900/AcuLaser C900 Revision B
Troubleshooting Check Points and Remedy for Paper Jam 163
SOLENOID
CLUTCH
MOTOR
Table 3-14. Checking Method (Solenoid)
Step Check Item
Yes/
No
Solution
1
Does the output signal (NO) from Control
Board turn H
→
L when the solenoid is
turned on?
NO Replace the Control Board
YES Replace the solenoid
Table 3-15. Checking Method (Clutch)
Step Check Item
Yes/
No
Solution
1
Does the output signal (NO) from Control
Board turn H
→
L when the clutch is turned
on?
NO Replace the Control Board
YES Replace the clutch
1
2
2
1 2
1
Table 3-16. Checking Method 1 (Motor)
Step Check Item
Yes/
No
Solution
1
Is the LOCK signal on Control Board “H”
when the printer is standing by? NO Replace the Control Board
Replace the motor
2
Does the REM signal on Control Board turn
H
→
L when the motor is turned on?
YES Replace the motor
NO Replace the Control Board
Table 3-17. Checking Method 2 (Motor)
Step Check Item
Yes/
No
Solution
1
Does the input signal to Control Board turn H
→
L when the motor is turned on?
(The input signal varies with the direction of
rotation.)
NO Replace the motor
YES Replace the Control Board
Table 3-18. Checking Method 3 (Motor)
Step Check Item
Yes/
No
Solution
1
Are the relay connector of the motor and the
print jack on Control Board connected
properly? NO Replace the motor or
Control Board
YES Connect the connector and
print jack properly
GND
REM
LOCK
2
1
3