Ricoh Aficio 1515 Service Manual page 90

SERVICE CALL CONDITIONS
No.
Definition
391 B Development bias leak
The polling module detects a current
leak of the development bias.
392 B Developer initialization error
The ID sensor does not detect a correct
pattern during developer initialization
(☛ 2-214-001).
401 B Transfer roller leak error (positive electrode)
The feedback voltage of the transfer
roller is insufficient.
402 B Transfer roller leak error (negative elecrode)
The feedback voltage of the transfer
roller is insufficient.
500 B Main motor error
The main motor does not reach its
operation speed within 0.7 second. Or,
the main motor remains out of its
operation speed for 0.7 second after
reaching the operation speed.
541 A Fusing thermistor open error
The fusing temperature remains lower
than the specified temperature by 20
degrees Celsius.
542 A Fusing temperature warm-up error
The fusing temperature rises 7 degrees
or less in two seconds; and this
continues 5 times consecutively. Or,
the fusing temperature is not detected
within 25 or 35 seconds.
543 A Fusing overheat error 1
The fusing temperature detected by the
thermistor is 230°C or higher for one
second.
544 A Fusing overheat error 2
The fusing temperature detected by the
monitor circuit is 250°C or higher for
one second.
Symptom
4-4
Possible Cause
• Loose connection of the PCU
• Defective high voltage supply board
• Defective ID sensor
• Insufficient developer
• Defective drum operation
• Defective development roller
operation
• Loose connection of the PCU
• Insufficient voltage for the charge
roller
• Defective high voltage supply board
• Loose connection of the PCU
• Incorrect installation of the transfer
unit or the separation unit
• Defective transfer roller
• Defective high voltage supply board
• Loose connection of the PCU
• Incorrect installation of the transfer
unit or the separation unit
• Defective transfer roller
• Overload
• Defective main motor
• Defective thermistor
• Incorrect installation of the thermistor
• Defective power supply unit
• Loose connectors
• Defective thermistor
• Incorrect installation of the thermistor
• Defective fusing lamp
• Defective power supply unit
• Defective thermistor
• Defective power supply unit
• Defective thermistor
• Defective power supply unit
9 March 2004