Ricoh Neptune-P1 Service Manual page 196

After the motor started, the fusing motor
lock signal remained HIGH for 5 sec.
530 D Fusing Unit Ventilation Fan Error
After the motor started, the fan motor lock
signal remained HIGH for 5 sec.
541 A Fusing Thermistor Errors
The thermistor measured the hot roller
temperature every 1 sec. for 30 sec. and the
temperature remained below 5
542 A Fusing Temperature Warm-up Error
The hot roller did not reach the ready
temperature within 4 min. 30 sec. after
power on.
-or-
After 5 sec. and 5 rotations of the hot roller,
the machine detected that the temperature
rise was less than 3
The ready temperature is determined by the state of the machine at recovery:
• Ready Temp. = Target Fusing Temp. (if power on or recovery starts when the hot roller
is 80°C or higher).
• Ready Temp. = Target Fusing Temp. – 10°C (SP1105-1 default) if power on or
recovery starts when the hot roller is less that 80°C.
• Ready Temp. = Target Fusing Temp. – 20°C (SP1937-3 default) if power on or
recovery starts with pressure roller inching control on.
543 A Fusing Lamp Temperature: Error 1 (Software Detection)
o o
C (54 F).
o
C .
• Physical obstruction blocking motor
• Motor harness damaged, defective
• Motor defective
• Physical obstruction blocking motor
• Motor harness damaged, defective
• Motor defective
• Thermistor positioned incorrectly
• Thermistor cable loose, disconnected,
damaged
• Thermistor defective
• Fusing lamp connections loose, broken,
defective
• Fusing lamp defective
• Thermistor not touching the hot roller
• Thermistor defective
• MCU defective
SC Code Descriptions
4
195