Ricoh B082 Service Manual page 203

Code No.
353 C ID sensor, LED current abnormal at
initialization
One of the following ID sensor
output voltages is detected at ID
sensor initialization.
1) Vsg < 4.0V when the maximum
PWM input (255) is applied to
the ID sensor.
2) Vsg ≥ 4.0V when the minimum
PWM input (0) is applied to the
ID sensor.
354 C ID sensor timeout abnormal at
adjustment
Vsg falls out of the adjustment target
(4.0 ± 0.2V) at the start of Vsg checking
after 20 seconds
390 C TD sensor error: Test value abnormal
The TD sensor output voltage is less
than 0.5V or more than 5.0V after 10
consecutive times during copying.
391 C TD sensor error: Auto adjust error
During automatic adjustment of the TD
sensor, output voltage is less than 1.8V
or more than 4.8V during TD sensor
initial setting.
395 C Development output abnormal
A development bias leak signal is
detected. High voltage output to the
development unit exceeded the upper
limit (65%) for 60 ms.
401 C Transfer roller leak detected
A transfer roller current leak signal is
detected.
402 C Transfer roller open error
The transfer roller current feedback
signal is not detected.
403 C Transfer belt position sensor error
The transfer belt position sensor does
not activate even if the transfer belt
contact clutch has been switched on
twice and rotated once.
SM
Symptom
4-5
SERVICE CALL CONDITIONS
Possible Cause
ID sensor defective
ID sensor harness defective
ID sensor connector defective
Poor ID sensor connection
I/O board (IOB) defective
Exposure system defective
High voltage supply board defective
Dirty ID sensor
ID sensor defective
ID sensor harness defective
ID sensor connector defective
I/O board (IOB) defective
Exposure system defective
Poor ID sensor connector connection
High voltage supply board defective
Dirty ID sensor
TD sensor defective
TD sensor not connected or connector
damaged
Poor connection between the TD
sensor and the I/O board (IOB)
I/O board (IOB) defective
Toner supply defective
TD sensor abnormal
TD sensor disconnected
Poor TD sensor connection
I/O Board (IOB) defective
Toner supply defective
High voltage supply board defective
Poor connection at the development
bias terminal
Poor connection at the high voltage
supply board
High voltage supply board defective
Poor cable connection or defective
cable
Transfer connector defective
High voltage supply board defective
Transfer connector cable defective
Transfer connector defective
Poor PCU connection
Main motor/drive malfunction
Transfer belt contact clutch defective
Harness disconnected
B079/B082