Ricoh M199, Service Manual

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Service Call Conditions
M199/M200/M203/M204 5-4 SM

Disconnected or defective motor harness.

Motor slips due to excessive load
1. Check the harness from the color drum motor. Replace it if necessary.
SC 4xx (Image Transfer and Transfer Error)
400
TM sensor error
The CPU detected a low voltage of the positive reflection output under the
threshold in the TM sensor.

TM sensors are dirty.

A solid print out due to an electrostatic charging error

The TM sensor is defective.
1. Clean the TM sensors.
2. Replace the TM sensors.
3. Check the image transfer unit.
4. Turn the power Off and On.
445
ITB (Image Transfer Belt) Unit: Home Position Error
The ITB contact sensor does not detect the home position of the ITB for 5
seconds after the ITB unit initialization has been done.
ITB (Image Transfer Belt) Unit: Contact Position Error
The ITB contact sensor does not detect the contact position of the ITB for 5
seconds after the ITB unit has moved to the contact position.
ITB (Image Transfer Belt) Unit: No-contact Position Error
The ITB contact sensor does not detect the home position of the ITB for 5
seconds after the ITB unit has moved to no-contact position.

Defective ITB contact motor

Defective ITB contact sensor

Defective ITB unit
1. Replace the ITB contact motor.
2. Replace the ITB contact sensor.
3. Replace the ITB unit.