Epson AcuLaser C1900 Service Manual page 163

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