Ricoh FT8680 Service Manual page 370

SYSTEM ERROR AND SERVICE CALL CONDITIONS
SC191 - ADS Adjustment Error
Definition:
ADS voltage cannot be adjusted to its standard value (3.0 V ± 0.5 V) during
the process data initialization.
NOTE: After resetting the system error condition, the ADS adjustment
will be tried again. Even if the second execution fails, no service
call condition is displayed and the copier goes into manual ID
selection mode until its next initialization.
Points to Check:
•
ADS fiber optics cable
•
ADS pattern
•
Exposure lamp
•
Main PCB (Photodiode)
SC301 - Charge Corona Current Adjustment Error
Definition:
During process control data initialization, the main PCB cannot adjust the
charge corona current to its target value.
NOTE: After resetting the system error condition, the adjustment will be
tried again. Even if the second execution fails, no service call
condition is displayed and the copier uses previous reference
data until its next initialization.
Points to check:
•
Charge corona unit
•
Charge corona power pack
•
Drum
•
Drum corona current detection PCB
6-8
31 July 1995