Service Call - Ricoh DD 4450 Service Manual

3. APPENDIX: SERVICE CALL CONDITIONS
3.1 SERVICE CALL CONDITIONS

3.1.1 SERVICE CALL

No.
E-00 Clamper error
The MPU cannot detect the clamper position sensor
signal (open or closed) within 3.0 seconds after the
clamper motor turns on.
E-01 Cutter error
The cutter HP sensor does not turn on within 3.0
seconds after the cutter motor turns on.
E-02 Paper Table Drive error
The paper height sensor or the table lower limit sensor
does not turn on within 7.5 seconds after the table
motor turn on.
E-04 Thermal Head Overheat
The temperature of the thermal head is grater than
54C when the Start key is pressed.
E-06 Main Motor error
The CPU cannot detect the master eject position
sensor (drum HP) signal within 5.0 seconds after the
main motor turn on.
E-09 Thermal Head Thermistor Open
The thermistor output voltage is over 2.82 volts.
SM Appendix
Symptom
3
Service Call Conditions
Possible cause
Clamper drive
Clamper sensors
Clamper motor
Cutter drive
Cutter switch
Cutter motor
Table Drive
Table motor
Table height sensor
Table lower sensor
Overheat (wait for the
thermal head to cool
down)
Thermal head
Main motor drive
Main motor
Motor drive board
Master eject position
sensor
Thermal head
thermistor
Thermal head
connector
C279