Ricoh R-C4 Service Manual page 160

SERVICE CALL CONDITIONS
Code No.
355 C ID sensor error
For details about the cause of the
problem, please refer to SC350~354
above.
389 B TD sensor error
TD sensor output was less than 0.5V, or
more than 0.5V 10 times in succession.
If the fax unit is installed, this SC is
issued immediately. If the fax unit is not
installed, this SC is issued after the
prescribed number of copies has printed.
390 D TD sensor error
The TD sensor outputs less than 0.5V or
more than 4.0V 10 times consecutively
during copying.
Note:
• If the fax option is installed, this SC is
issued immediately.
• If the fax option is not installed, this
SC is issued after the prescribed
number of pages is copied.
391 B Development bias leak
A development bias leak signal is
detected.
392 B TD sensor initial setting error
Initialization of the new PCU unit failed.
TD sensor output voltage fell out of the
adjustment range (2.0 ±<> 0.2 V.
398 B PCU error South Korea only
Illegal PCU unit.
399 B Illegal toner bottle South Korea only
The toner bottle installed is not intended
for use with this machine.
Symptom
4-6
Possible Cause
• ID sensor dirty or defective
• ID sensor harness disconnected, or
connector damaged
• SBCU board defective
• High voltage power supply board
(power pack) defective
• Scanning system or image creation
system malfunction
• TD sensor defective
• TD sensor connector damaged.
• TD sensor abnormal
• Poor connection of the PCU
• Poor connection at the PCU bias
terminal
• High voltage supply board defective
• The PCU toner seal was not
removed
• ID sensor defective
• TD sensor defective
• Drum does not turn
• Development roller does not turn
• Install the correct type of PCU.
• Install the correct type of toner
bottle.
21 July 2006