Service manual

SC TABLE
G130/G131 4-22 SM
SC No. Item Definition Possible Cause
Related
SCs
Troubleshooting Procedure Type
SC
504-02
Tray 4 error (3
Tray Paper
Feed Unit)
When the main switch is turned
on or when the tray is set and if
the upper limit is already
detected, the lift motor turns on
to lower the bottom plate until
the lift sensor goes off.
If the motor turns on for 7
seconds or more, the machine
asks the user to reset the tray.
If this condition occurs 3
consecutive times, this SC is
generated.
• Defective tray lift motor
or connector
disconnection
• Defective lift sensor or
connector
disconnection
1. Turn the main switch off and on.
2. Check the cable connections.
3. Check and/or replace the defective
component.
B
SC 530 Fusing fan
motor error
The BCU does not receive the
lock signal (CN212-B8) 5
seconds after turning on the
fusing fan.
• Defective fusing fan
motor or connector
disconnection
• Defective BCU
1. Turn the main switch off and on.
2. Check the connector and/or replace
the fusing fan motor.
3. Replace the BCU.
D
SC 541 Heating roller
thermistor error
The temperature measured by
the heating roller thermistor
does not reach 7 °C for ten
seconds.
• Loose connection of
the heating roller
thermistor
• Defective heating roller
thermistor
• Defective BCU
1. Check if the heating roller thermistor
is firmly connected.
2. Replace the fusing unit.
3. Replace the BCU.
A
SC 542 Heating roller
warm-up error
The heating roller temperature
does not reach 120°C for 30
(G131) / 60 (G130) seconds
after the heating lamp has
been turned on.
• Heating roller fusing
lamp broken
• Defective heating roller
thermistor
•
SC 552 1. Check if the heating roller thermistor
is firmly connected.
2. Replace the fusing unit.
3. Replace the BCU.
A
SC 543 Heating roller
fusing lamp
overheat
The detected fusing
temperature stays at 250°C or
more for 2 seconds.
• Defective PSU
• Defective BCU
SC 553 1. Replace the PSU.
2. Replace the BCU.
A