Ricoh FW780 Service Manual - Page 303
Troubleshooting, Service Call Condition, 2.12 Sc Code E-14: Zero Cross Signal Detection, Abnormal
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SERVICE CALL CONDITION 6. TROUBLESHOOTING 6.2 SERVICE CALL CONDITION The following service conditions are newly added as the A251 and A252 copiers. For other SC conditions, refer to the A163 copier for details. To clear SC E-15, access SP38 and change the data from "1" to "0". 6.2.12 SC CODE E-14: ZERO CROSS SIGNAL DETECTION ABNORMAL - Definition The zero cross signal is not detected within 0.5 second after the main switch is turned on. - Points to check • Main board • AC Drive board 6.2.13 SC CODE E-15: MAIN SWITCH ABNORMAL (U.S.A. VERSION ONLY) - Definition The main switch does not turn off within 0.45 second after sending reset signal. - Points to check • Main switch • Main board Troubleshooting SM 6-1 A251/A252
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SERVICE CALL CONDITION
SM
6-1
A251/A252
Trouble-
shooting
6. TROUBLESHOOTING
6.2 SERVICE CALL CONDITION
The following service conditions are newly added as the A251 and A252 copiers.
For other SC conditions, refer to the A163 copier for details. To clear SC E-15,
access SP38 and change the data from “1” to “0”.
6.2.12 SC CODE E-14: ZERO CROSS SIGNAL DETECTION
ABNORMAL
- Definition -
The zero cross signal is not detected within 0.5 second after the main switch is
turned on.
- Points to check -
•
Main board
•
AC Drive board
6.2.13 SC CODE E-15: MAIN SWITCH ABNORMAL
(U.S.A. VERSION ONLY)
- Definition -
The main switch does not turn off within 0.45 second after sending reset signal.
- Points to check -
•
Main switch
•
Main board