Ricoh B205 Service Manual page 183

Code No.
322 B Laser synchronization error
The main scan synchronization detector
board cannot detect the laser
synchronization signal for more than 10
consecutive 50 ms intervals.
323 B LD drive current over
• The LD drive current exceeded 100
mA.
• The XLDERR of the LD board was
detected LOW twice within 100 ms.
• Initialization of the PMACA failed.
350 B ID sensor calibration – Error 1
One of the following conditions occurred
when the ID sensor pattern was
calibrated during printing:
• Vsp > 2.5V
• Vsg < 2.5V
• Vsp = 0V
• Vsg = 0V
351 B ID sensor calibration – Error 2
The following conditions occurred
simultaneously when the ID sensor
pattern was calibrated during printing:
• Vsg = 5V
• PWM = 0 (LED current drop)
352 B ID sensor calibration – Error 3
During printing the 2.5V value for edge
detection of the ID sensor pattern could
not be detected after 800 ms.
353 B ID sensor adjustment Error 1
Error occurred during automatic
adjustment of Vsg:
• Vsg output did not attain 4V, even
with PWM = 255 (maximum current
for LED)
• Vsg output was greater than 4V, even
with PWM=0 (no current for the LED)
354 B ID Sensor Adjustment Error 2
Error occurred during automatic
adjustment of Vsg. Vsg could not be
adjusted to 4.0V±0.2V within 50 ms even
after 20 attempts.
SM
Symptom
4-5
SERVICE CALL CONDITIONS
Possible Cause
• 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
• LD unit defective (not enough
power, due to aging)
• Poor connection between the LD
unit and the SBCU board
• SBCU board defective
• ID sensor defective or dirty
• ID sensor harness disconnected or
connector is damaged
• SBCU defective
• Scanning system or image creation
system malfunction
• High voltage power supply board
(power pack) defective
• ID sensor dirty or defective
• ID sensor harness disconnected, or
connector damaged
• SBCU board defective
• High voltage power supply board
(power pack) defective
• ID sensor dirty or defective
• ID sensor harness disconnected, or
connector damaged
• SBCU defective
• High voltage power supply board
(power pack) defective
• ID sensor dirty or defective
• ID sensor harness disconnected, or
connector damaged
• SBCU defective
• High voltage power supply board
(power pack) defective
• Scanning system or image creation
system malfunction
• ID sensor dirty or defective
• ID sensor harness disconnected, or
connector damaged
• SBCU defective
• High voltage power supply board
(power pack) defective
• Scanning system or image creation
system malfunction
B205/B209/D007/D008