• Code: 7302
• Description: Toner hopper motor C error During the Toner hopper motor C is driven, an event in which a locking was detected for 15 times in 200 ms intervals.
• Remedy: Toner hopper motor C 1. Check the drive gear can rotate or they are not unusually loaded and, if necessary, replace. 2. Confirm that the wiring connector is firmly connected and, if necessary, connect the connector all the way in. Toner hopper motor C and retainer PWB (YC4) Retainer PWB (YC3) and front PWB (YC6) Front PWB (YC3) and engine PWB (YC7) 3. If the wiring is disconnected, shorted or grounded, replace the wiring. 4. Replace the Toner motor C.
  Screw sensor C 1. Check that the sensor is correctly positioned. 2. Confirm that the wiring connector is firmly connected and, if necessary, connect the connector all the way in. Screw sensor C and Engine PWB (YC27) 3. Replace the screw sensor C.
  Engine PWB 1. Check the engine software and upgrade to the latest, if necessary. 2. Replace the engine PWB.

• Code: 7303
• Description: Toner hopper motor M error During the Toner hopper motor M is driven, an event in which a locking was detected for 15 times in 200 ms intervals.
• Remedy: Toner hopper motor M 1. Check the drive gear can rotate or they are not unusually loaded and, if necessary, replace. 2. Confirm that the wiring connector is firmly connected and, if necessary, connect the connector all the way in. Toner hopper motor M and retainer PWB (YC4) Retainer PWB (YC3) and front PWB (YC6) Front PWB (YC3) and engine PWB (YC7) 3. If the wiring is disconnected, shorted or grounded, replace the wiring. 4. Replace the Toner motor M.
  Screw sensor M 1. Check that the sensor is correctly positioned. 2. Confirm that the wiring connector is firmly connected and, if necessary, connect the connector all the way in. Screw sensor M and Engine PWB (YC27) 3. Replace the screw sensor M.
  Engine PWB 1. Check the engine software and upgrade to the latest, if necessary. 2. Replace the engine PWB.

• Code: 7304
• Description: Toner hopper motor Y error During the Toner hopper motor Y is driven, an event in which a locking was detected for 15 times in 200 ms intervals.
• Remedy: Toner hopper motor Y 1. Check the drive gear can rotate or they are not unusually loaded and, if necessary, replace. 2. Confirm that the wiring connector is firmly connected and, if necessary, connect the connector all the way in. Toner hopper motor Y and retainer PWB (YC4) Retainer PWB (YC3) and front PWB (YC6) Front PWB (YC3) and engine PWB (YC7) 3. If the wiring is disconnected, shorted or grounded, replace the wiring. 4. Replace the Toner motor Y.
  Screw sensor Y 1. Check that the sensor is correctly positioned. 2. Confirm that the wiring connector is firmly connected and, if necessary, connect the connector all the way in. Screw sensor Y and Engine PWB (YC27) 3. Replace the screw sensor Y.
  Engine PWB 1. Check the engine software and upgrade to the latest, if necessary. 2. Replace the engine PWB.

• Code: 7460
• Description: Developer shutter error Power is turned on while the developer shutter is locked.
• Remedy: The developer shutter has been locked. Release the developer shutter.
  Developer shutter sensor 1. Confirm that the wiring connector is firmly connected and, if necessary, connect the connector all the way in. Developer shutter sensor and front PWB (YC5) Front PWB (YC3) and engine PWB (YC7) 2. If the wiring is disconnected, shorted or grounded, replace the wiring. 3. Replace the developer shutter sensor.
  Engine PWB 1. Check the engine software and upgrade to the latest, if necessary. 2. Replace the engine PWB.

• Code: 7470
• Description: Toner fan motor 1 error The toner fan motor 1 signal has been detected as unconnected at power up.
• Remedy: Toner fan motor 1 1. To check the fan motor operation, execute U037 Toner. 2. Confirm that the wiring connector is firmly connected and, if necessary, connect the connector all the way in. Toner fan motor 1 and Engine PWB (YC26) 3. If the wiring is disconnected, shorted or grounded, replace the wiring. 4. Replace the Toner fan motor 1.
  Engine PWB 1. Check the engine software and upgrade to the latest, if necessary. 2. Replace the engine PWB.

• Code: 7480
• Description: Toner fan motor 2 error The toner fan motor 2 signal has been detected as unconnected at power up.
• Remedy: Toner fan motor 2 1. To check the fan motor operation, execute U037 Toner. 2. Confirm that the wiring connector is firmly connected and, if necessary, connect the connector all the way in. Toner fan motor 2 and Engine PWB (YC26) 3. If the wiring is disconnected, shorted or grounded, replace the wiring. 4. Replace the Toner fan motor 2.
  Engine PWB 1. Check the engine software and upgrade to the latest, if necessary. 2. Replace the engine PWB.

• Code: 7601
• Description: ID sensor 1 error An abnormal value is detected in the input data to ID sensor 1. Dark potential error FrontDarkP and FrontDarkS are greater than 0.80V. Light potential error FrontBrightS is smaller than FrontDarkS. FrontBrightP is smaller than [FrontDarkP + 0.5V].
• Remedy: ID sensor1 (front) 1. Execute U464 Calib for setting ID compensation operation and check the displayed values by U465 Boas Calib for ID compensation reference.. 2. Detach the imtermediate intermediate transfer belt unit and clean the ID sensor on its surface. 3. Confirm that the wiring connector is firmly connected and, if necessary, connect the connector all the way in. ID sensor 1 (front) and Feed PWB 1(YC10) Feed PWB 1(YC1) and Engine PWB (YC6) 4. If the wiring is disconnected, shorted or grounded, replace the wiring.
  Feed PWB 1 Replace the Feed PWB 1.
  Engine PWB 1. Check the engine software and upgrade to the latest, if necessary. 2. Replace the engine PWB.

• Code: 7602
• Description: ID sensor 2 error Dark potential error RearDarkP and RearDarkS are greater than 0.80V. Light potential error RearBrightS is smaller than RearDarkS. RearBrightP is smaller than [RearDarkP + 0.5V].
• Remedy: ID sensor 2 (rear) 1. Execute U464 Calib for setting ID compensation operation and check the displayed values by U465 Boas Calib for ID compensation reference.. 2. Detach the imtermediate intermediate transfer belt unit and clean the ID sensor on its surface. 3. Confirm that the wiring connector is firmly connected and, if necessary, connect the connector all the way in. ID sensor2 (rear) and Feed PWB 1(YC10) Feed PWB 1(YC1) and Engine PWB (YC6) 4. If the wiring is disconnected, shorted or grounded, replace the wiring.
  Feed PWB 1 Replace the Feed PWB 1.
  Engine PWB 1. Check the engine software and upgrade to the latest, if necessary. 2. Replace the engine PWB.