Gestetner G060 Service Manual page 508

SC TABLE
SC No. Item
SC 504- Tray 4 error (3
02 Tray Paper Feed
Unit)
SC 530 Fusing fan motor
error
SC 541 Heating roller
thermistor error
SC 542 Heating roller
warm-up error
SC 543 Heating roller
fusing lamp
overheat
G570
Definition
• Defective tray lift
When the main switch is
turned or when the tray is
set and if the upper limit is
• Defective lift sensor
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 fusing fan
The BCU does not receive
the lock signal (CN210-B5)
5 seconds after turning on
• Defective BCU
the fusing fan.
• Loose connection of
The temperature measured
by the heating roller
thermistor does not reach 7
• Defective heating
°C for ten seconds.
• Defective BCU
• Heating roller fusing
After the main switch is
turned on or the cover is
• Defective heating
closed, the heating roller
temperature does not reach
• Defective BCU
the ready temperature within
60 seconds during fusing
unit warm-up.
• Defective PSU
The detected fusing
• Defective BCU
temperature stays at 200°C
or more for five seconds.
Related
Possible Cause
SCs
motor or connector
disconnection
or connector
disconnection
motor or connector
disconnection
the heating roller
thermistor
roller thermistor
lamp broken
roller thermistor
4-26
Troubleshooting Procedure
1. Turn the main switch off and on.
2. Check the cable connections.
3. Check and/or replace the defective
component.
1. Turn the main switch off and on.
2. Check the connector and/or replace
the fusing fan motor.
3. Replace the BCU.
1. Check if the heating roller thermistor
is firmly connected.
2. Replace the fusing unit.
3. Replace the BCU.
1. Check if the heating roller thermistor
is firmly connected.
2. Replace the fusing unit.
3. Replace the BCU.
1. Replace the PSU.
2. Replace the BCU.
Type
B
B
A
A
A
SM