Ricoh K-C3 - Electrical Component Defects

B245/B276/B277/B268/B269 Service Manual 18-Jan-06
124
No.
Definition
Symptom Possible Cause
The fusing temperature
varies 50C or more within
1 second, and this occurs
2 consecutive times.
 Thermistor defective or out of
position
 Power supply unit defective
Jam error detected 3 times in succession
559
 The exit sensor and
the duplex sensor
detect a paper jam 3
times in succession
 This condition can
occur when SP 1159
1 is set to ‘on’. The
default is ‘off’.
Paper jams can occur for the following
reasons.
 Dampness
 Paper curl
 Incorrect paper setting in the paper
tray
 Stripper pawls coming apart
Left exhaust fan motor error
590 B
The CPU detects an
exhaust fan lock signal for
more than 5 seconds.
 Loose connection of the exhaust fan
motor
 Too much load on the motor drive
Rear exhaust fan motor error
591 B
The CPU detects an
exhaust fan lock signal for
more than 5 seconds.
 Loose connection of the exhaust fan
motor
 Too much load on the motor drive
Communication error between BICU and ADF
620 B
The BICU does not
receive a response from
the ADF main board for 4
seconds or more.
The BICU receives a
break signal from the ADF
main board.
 Poor connection between the BICU
and ADF main board (DF connector)
 ADF main board defective
 BICU defective
ADF connection error
621 B
An incorrect ADF (an ADF
for some other copier) is
detected. (for Basic and
 ADF incorrect (The ADF for
B039/B040/B043 or
B121/B122/B123 is installed on a