Ricoh M0C4 SP330SN

• Code: SC202
• Description: Polygon mirror motor on timeout error
  The polygon mirror motor does not reach the targeted operating speed within 10 sec. after turning on.
• Causes: • Polygon mirror motor/LD driver board harness loose or disconnected
  • Polygon mirror motor/LD driver board defective
• Remedy: 1. Turn the power OFF and ON.
  2. Replace the polygon mirror motor/ laser unit.
  3. Replace the interface harness of the laser unit.
  4. Replace the main board.

• Code: SC203
• Description: Polygon mirror motor off timeout error
  The polygon mirror motor does not leave the READY status within 20 sec. after the polygon mirror motor was switched off.
• Causes: • Polygon mirror motor/LD driver board harness loose or disconnected
  • Polygon mirror motor/LD driver board defective
• Remedy: 1. Turn the power OFF and ON.
  2. Replace the polygon mirror motor/ laser unit.
  3. Replace the interface harness of the laser unit.
  4. Replace the main board.

• Code: SC204
• Description: Polygon mirror motor lock signal error
  The signal remains HIGH for 0.2 sec. (or 4 times in 50msec of polling) while the polygon mirror motor is rotating.
• Causes: Polygon mirror motor/LD driver board defective
• Remedy: 1. Turn the power OFF and ON.
  2. Replace the polygon mirror motor/ laser unit.
  3. Replace the interface harness of the laser unit.

• Code: SC220
• Description: Beam synchronization error
  The laser synchronization detection signal for the LD is not output within 0.4 sec. after the laser unit has turned on.
• Causes: • Disconnected cable from the laser synchronization detector defective connection
  • Defective laser synchronization detector/ main board
  • The beam does not enter the laser synchronization detector
• Remedy: 1. Turn the power OFF and ON.
  2. Replace the polygon mirror motor/ laser unit.
  3. Replace the interface harness of the laser unit.
  4. Replace the main board.

• Code: SC268
• Description: Laser unit thermistor error
  • The laser unit thermistor detected a temperature lower than -30°C for more than 4 sec.
  • The laser unit thermistor detected a temperature higher than 105°C for more than 1 sec.
• Causes: • Thermistor disconnected (causes an extremely low temperature reading)
  • Defective harness
  • Defective main board
• Remedy: 1. Turn the power OFF and ON.
  2. Replace the laser unit thermistor.

• Code: SC491
• Description: Bias leak
  An error signal is detected for 0.2 seconds when changing the development unit.
• Causes: • HVP harness damaged and short circuited
  • Defective the HVP
  • AIO terminal damaged and short circuited
• Remedy: 1. Turn the power OFF and ON.
  2. Replace the main board.
  3. Replace the transfer roller.
  4. Replace the interface harness of the HVP.
  5. Replace the HVP.