Ricoh JP5800 Service Manual page 72

1 March, 2000
Code Title
SC05-30 Drum thermistor
open
SC05-31 Drum thermistor
short
SC05-32 Ink pump sensor
remains on
SC05-33 Ink pump sensor
remains off
SC05-40 A4 cam sensor
remains on
SC05-41 A3 cam sensor
remains off
SC05-42 A3 cam sensor
remains on
SC05-43 A4 cam sensor
remains off
SC05-50 Clamper close
position sensor
remains on when
opening the
clamper
SC05-51 Clamper open
position sensor
remains off when
opening the
clamper
Conditions
The signal from the thermistor
beside the ink detecting pins
reaches 4.5 volts.
The thermistor beside the ink
detecting pins detects an
excessively high temperature (96
°C).
The sensor is not de-activated
after the ink pump motor on
signal is generated.
The sensor is not activated after
the ink pump motor on signal is
generated.
The sensor does not de-activate
for more than 6 seconds after the
pressure cam shift motor on
signal is generated.
The sensor does not activate for
more than 6 seconds after the
pressure cam shift motor on
signal is generated.
The sensor does not de-activate
for more than 6 seconds after the
pressure cam shift motor on
signal is generated.
The sensor does not activate for
more than 6 seconds after the
pressure cam shift motor on
signal is generated.
When the master clamper is
being opened, the sensor is not
de-activated for more than 4
seconds after the clamper motor
on signal is generated.
When the master clamper is
being opened, the sensor is not
activated for more than 4
seconds after the clamper motor
on signal is generated.
4-5
SERVICE CALL CODES
Possible Causes
• Thermistor circuit open
• Related connector
disconnected
• Thermistor short
• Defective sensor
• Defective motor
• Jammed ink pump
drive
• Defective sensor
• Defective motor
• Jammed ink pump
drive
• Defective sensor
• Defective motor
• Defective sensor
• Defective motor
• Defective sensor
• Defective motor
• Defective sensor
• Defective motor
• Defective sensor
• Defective motor
• Jammed drum guide
drive
• Defective 2nd drum
position sensor
• Defective MPU
• Defective main motor
• Defective sensor
• Defective motor
• Jammed drum guide
drive
• Defective 2nd drum
position sensor