Ricoh B089 - Page 411

SERVICE CALL CONDITIONS
SM 7-3 B089/B093
Trouble-
shooting
Code No. Symptom Possible Cause
SBU connection error 144 B
The IPU does not detect the SBU
connection signal.
Cable between SBU and IPU board
disconnected.
Automatic SBU adjustment error 192 B
An error is detected during automatic
SBU adjustment (SP4-428)
• SBU defective
• SBCU board defective
• Exposure lamp stabilizer defective
• Exposure lamp defective
• Dirty white plate
Image transfer error 193 B
The IPU board does not finish within 1
minute after the image data has been
transferred to the controller board.
• IPU board defective
• Controller board defective
• Video controller defective
DFGATE assert error 195 B
The DFGATE signal does not assert
within 30 seconds after the original has
been scanned.
• ADF interface cable defective
• SBCU board defective
• Mismatched firmware between the
SBCU board and ADF
DFGATE negate error 196 B
The DFGATE signal does not negate
within 1 minute after the DFGATE has
been asserted.
• ADF interface cable defective
• SBCU board defective
• Mismatched firmware between the
SBCU board and ADF
DFGATE error 197 B
The DFGEATE signal has already been
asserted at the original scan.
• ADF interface cable defective
• SBCU board defective
• Mismatched firmware between the
SBCU board and ADF
Memory address error 198 B
The IPU board does not receive the
memory address from the controller
board.
• Mismatched firmware between the
SBCU board and controller board
• Controller defective
• SBCU defective
• IPU board defective
DF scanning finish error 199 B
The original does not finish scanning
with in 1 minute
• ADF interface cable defective
• SBCU board defective
• Mismatched firmware between the
SBCU board and ADF
Charge roller current leak 302 B
A charge roller current leak signal is
detected.
• Charge roller damaged
• Charge high voltage supply board
defective
• Poor connection of the PCU
Polygon motor error 320 B
The polygon motor does not reach its
operating speed within 10 seconds after
the polygon motor on signal, or the lock
signal is not detected for more than 200
ms continuously during operation.
• Polygon mirror motor defective
• Poor connection between the
polygon mirror motor driver and the
SBCU board
• SBCU board defective
Laser synchronization error 322 B
The main scan synchronization detector
board cannot detect the laser
synchronization signal for more than 10
consecutive 50 ms intervals.
• Poor connection between the laser
synchronization detector board and
the SBCU board
• Laser synchronization detector board
out of position
• Laser synchronization detector board
defective
• SBCU board defective
• LD unit defective