Gestetner G060 Service Manual page 137

SC No. Item
SC 554 Pressure roller During stand-by mode or
fusing lamp printing, the detected pressure
low roller temperature stays at 50
temperature °C or less for five seconds.
error
SC 555 Pressure roller When the fusing unit is not
fusing lamp running in the Ready condition,
consecutive the pressure roller fusing lamp
keeps ON with full power for
full power
100 consecutive seconds.
SC 556 Pressure roller The pressure roller
temperature changes by ±20
fusing lamp
temperature
°C or more in one second. This
fluctuation
occurs three times in one
minute or two consecutive
times.
SC 560 Zero cross When the main switch is
error turned on, the machine checks
how many zero-cross signals
are generated during 500 ms.
If the number of zero-cross
signal generated is either more
than 66 or less than 45 and
when this condition is detected
10 consecutive times, this
code is displayed.
SM
Definition Possible Cause
• Loose connection
between the fusing
unit and the machine
• Defective pressure
roller thermistor
• Defective PSU
• Defective BCU
• Pressure roller
thermistor out of
position
• Loose connection of
the pressure roller
thermistor
• Loose connection
between the fusing
unit and main frame
• Electrical noise in the
supply from the
power cord
4-23
Related
Troubleshooting Procedure
SCs
1. Check the connection between the
fusing unit and main frame.
2. Replace the fusing unit.
3. Replace the PSU.
4. Replace the BCU.
1. Replace the fusing unit.
1. Check if the fusing unit is properly set
and connected to the main frame.
2. Check if the pressure roller thermistor
connector is firmly connected.
3. Replace the fusing unit.
1. Replace the PSU.
SC TABLE
Type
A
A
A
A
G060