Ricoh B022, Service Manual, Page: 338 / 878

Trouble-
shooting
SERVICE CALL CONDITIONS
SM 7-9 B022/B027
Code No. Symptom Possible Cause
Output tray motor error (500-sheet
finisher)
Exit guide plate motor error (1000-sheet
finisher) 731 B
The tray upper limit sensor does not
activate within a certain time after the
shift motor turned on. (500-sheet
finisher)
The exit guide plate open sensor or exit
guide plate HP sensor does not activate
within a certain time after the exit guide
plate motor turned on. (1000-sheet
finisher)
500-sheet finisher
•
Output tray motor defective
•
Tray upper limit sensor defective
1000-sheet finisher
•
Exit guide plate motor defective
•
Exit guide plate HP sensor defective
•
Exit guide plate open sensor
defective
Finisher shift motor error (1000-sheet
finisher) 732 B
Roller shift does not finish within a
certain time after the shift motor turned
on.
•
Shift motor defective
•
Shift tray HP sensor defective
Shift tray motor error (optional shift tray
unit)
770 B
The shift tray half-turn sensor is not
activated within a certain amount of
time after the shift tray motor turns on.
•
Shift tray motor defective
•
Shift tray half-turn sensor defective
Bridge communication error 791 B
The SBCU cannot communicate with
the bridge unit properly when the
finisher is installed.
•
Poor connection between the main
machine and bridge unit
•
SBCU board defective
Finisher connection error 792 B
The SBCU cannot communicate with
the finisher properly when the bridge
unit is installed.
•
Poor connection between the finisher
and bridge unit
•
SBCU board defective
Interchange communication error 793 B
The SBCU cannot communicate with
the interchange unit properly when the
duplex unit is installed.
•
Poor connection between the
interchange unit and main machine
•
SBCU board defective
Startup without video output end error
(K) 800 D
Video transfer to the engine is started,
but the engine did not issue a video
transmission end command within the
specified time.
Controller board defective
Startup without video input end (K) 804 D
A video transmission was requested
from the scanner, but the scanner did
not issue a video transmission end
command within the specified time.
Controller board defective
Watchdog error 818 D
The CPU does not access the
watchdog register within a certain time.
•
Controller board defective
•
Software malfunction – download
controller firmware again
Kernel mismatch error 819 D
Software bug
Download controller firmware again
Rev. 01/2003