Service manual

SC554: Pressure roller low temperature
Type: 1
- Description -
The main control board notifies the SCU when the pressure roller
thermistor outputs an analog value corresponding to 70
°
C after it had
already reached the ready temperature.
- Detection Timing -
At all times
- Possible Causes -
• Pressure roller thermistor
• Main control board
SP-Log: 7-402-5
SC555: Pressure roller ready temperature abnormal
Type: 1
- Description -
The main control board notifies the SCU when the pressure roller
thermistor outputs an analog value corresponding to a temperature
lower than the ready temperature for 6 minutes or more after it had
already reached the ready temperature.
- Detection Timing -
At all times
- Possible Causes -
• Pressure roller thermistor
• Main control board
SP-Log: 7-402-5
SC557: Pressure roller temperature does not increase
Type: 1
- Description -
The main control board notifies the SCU when the output of the
pressure roller thermistor increases by no more than 3
°
C for a minute
during warming up after the power switch is turned on.
- Detection Timing -
When the power switch is turned on
- Possible Causes -
• Pressure roller thermistor
• Main control board
SP-Log: 7-402-5
Trouble-
shooting
SERVICE CALL CONDITIONS
SM 6-21 A166/A187/A189
CÓPIA NÃO CONTROLADA
CÓPIA NÃO CONTROLADA