Ricoh B079 - Page 203

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