Ricoh JP5800 - Page 72

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