Ricoh A-P3 Service Manual page 124

6 November, 2001
SC Level
731 B Finisher exit guide open/close motor
error
After the finisher exit guide
open/close motor is turned on, the
open/close sensor does not activate
within the specified time.
732 C Finisher upper tray shift motor error
The upper tray shift motor does not
stop within the specified time.
733 C Finisher lower tray lift motor error
The stack height sensor does not
activate within the specified time, i.e.
the lower tray lift motor does not
stop.
734 C Finisher lower tray shift motor error
The lower tray shift sensor does not
activate with the specified time, i.e.
the lower tray shift motor driving the
lower tray does not stop.
C
ONTROLLER
820 B Self-Diagnostic Error: CPU
The central processing unit returned
an error during the self-diagnostic
test.
821 B Self-Diagnostic Error: ASIC
The ASIC returns an error during the
self-diagnostic test at power on
because the ASIC and CPU timer
interrupts were compared and
determined to be out of range.
824 B Self-diagnostic Error: NVRAM
The resident non-volatile RAM
returns an error during the self-
diagnostic test at power on.
827 B Self-diagnostic Error: RAM
The resident RAM returned a verify
error during the self-diagnostic test at
power on.
828 B Self-diagnostic Error: ROM
The resident read-only memory
returned an error during the self-
diagnostic test at power on.
O
THER
900 B Electronic total count error
• The value of the total count has
already exceeded its limit
(9,999,999)
•
During counting, a defect was
detected at the mechanical
counter.
Symptom
4-11
SERVICE CALL CONDITIONS
Possible Cause
• Finisher exit guide open/close
motor defective
• Open/close sensor defective
• Upper tray shift motor defective or
overloaded
• Upper tray shift sensor defective
• Lower tray lift motor defective or
overloaded
• Upper stack height sensor
defective
• Lower tray lower limit sensor
defective
• Lower tray shift motor defective or
overloaded
• Lower tray shift sensor defective
• Controller board defective
• Software defective
• Controller board defective
• NVRAM damaged or abnormal
• Backup battery has discharged
• NVRAM socket damaged
• Memory malfunction
• Controller board defective
• Firmware defective
• NVRAM defective