• Code: 904.02
• Description: Service transfer belt Sensor (transfer belt edge) failure
• Remedy: 1 Check the transfer belt unit assembly for proper installation. Is the above component properly installed? Go to step 2. Re-install the transfer belt unit assembly. 2 Check the transfer belt unit assembly for damage. Is the above component free of damage to the frame and the belt? Go to step 3. Replace the transfer belt unit assembly. 3 Check the transfer belt steering motor assembly for proper operation. Caution: When performing motor tests, ensure that all cover and door interlock switches are overridden. 1. Enter the Diagnostics Menu. 2. Select MOTOR TESTS. 3. Select Printer Motor tests 4. Select Transfer belt steering motor. Does the above component operate properly? Go to step 5. Go to step 4. 4 Check the transfer belt steering motor for proper connection. Is the above component properly connected. Replace the transfer belt steering motor. Go to Go to “Transfer belt steering motor removal”. Replace the connection. 5 Perform a POR. Does the error occur when the power is turned off/on? Replace the lower printer engine card assembly. Go to “Lower printer engine card assembly removal”. Problem solved.

• Code: 904.03
• Description: Service transfer belt Sensor (2nd transfer roll retract HP) late error
• Remedy: 1 Perform a POR. Does the error occur when the power is turned off/on? Go to step 2. Perform several print tests. If the problem remains, go to step 2. 2 Check the sensor (2nd transfer roll HP) for proper operation. 1. Enter the Diagnostics Menu. 2. Select Base Sensor Tests. 3. Select Media Path. 4. Select 2nd transfer roll retract HP. Does the display on the operator panel, change every time the sensing area of the above sensor is interrupted or blocked? Go to step 4. Go to step 3. 3 Check the sensor (2nd transfer roll HP) for proper connection. Is the above component properly connected? Replace the sensor (2nd transfer roll retract HP). Go to “Sensor (2nd transfer roll retract HP) removal”. Replace the connection. 4 Check the 2nd transfer roll retract motor for proper operation. 1. Enter the Diagnostics Menu. 2. Select BASE SENSOR TESTS. 3. Select Media Path. 4. Select 2nd transfer roll retract HP. Does the above component operate properly? Go to step 6. Skip to step 5. 5 Check the 2nd transfer roll retract motor for proper connection. Is the above component properly connected? Replace the 2nd transfer roll retract motor assembly. Go to “ 2nd transfer roll retract motor assembly removal”. Replace the connection. 6 Perform a print test. Does the error continue? Replace the lower printer engine card assembly. Go to “Lower printer engine card assembly removal”. Problem solved. 7 Perform a POR. Does the error occur when the power is turned off/on? Replace the lower printer engine card assembly. Go to “Lower printer engine card assembly removal”. Problem solved.

• Code: 904.04
• Description: Service transfer belt Sensor (2nd transfer roll retract HP) lag error
• Remedy: 1 Perform a POR. Does the error occur when the power is turned off/on? Go to step 2. Perform several print tests. If the problem remains, go to step 2. 2 Check the sensor (2nd transfer roll HP) for proper operation. 1. Enter the Diagnostics Menu. 2. Select Base Sensor Tests. 3. Select Media Path. 4. Select 2nd transfer roll retract HP. Does the display on the operator panel, change every time the sensing area of the above sensor is interrupted or blocked? Go to step 4. Go to step 3. 3 Check the sensor (2nd transfer roll HP) for proper connection. Is the above component properly connected? Replace the sensor (2nd transfer roll retract HP). Go to “Sensor (2nd transfer roll retract HP) removal”. Replace the connection. 4 Check the 2nd transfer roll retract motor for proper operation. Caution: When performing motor tests, ensure that all cover and door interlock switches are overridden. 1. Enter the Diagnostics Menu. 2. Select MOTOR TESTS. 3. Select Printer motor tests. 4. Select 2nd transfer roll retract motor Does the above component operate properly? Go to step 6. Skip to step 5. 5 Check the 2nd transfer roll retract motor for proper connection. Is the above component properly connected? Replace the 2nd transfer roll retract motor. Go to Replace the connection. 6 Perform a print test. Does the error continue? Replace the lower printer engine card assembly. Go to “Lower printer engine card assembly removal”. Problem solved. 7 Perform a POR. Does the error occur when the power is turned off/on? Replace the lower printer engine card assembly. Go to “Lower printer engine card assembly removal”. Problem solved.

• Code: 904.04
• Description: Service transfer belt Sensor (2nd transfer roll retract HP) lag error
• Remedy: 1 Perform a POR. Does the error occur when the power is turned off/on? Go to step 2. Perform several print tests. If the problem remains, go to step 2. 2 Check the sensor (2nd transfer roll HP) for proper operation. 1. Enter the Diagnostics Menu. 2. Select Base Sensor Tests. 3. Select Media Path. 4. Select 2nd transfer roll retract HP. Does the display on the operator panel, change every time the sensing area of the above sensor is interrupted or blocked? Go to step 4. Go to step 3. 3 Check the sensor (2nd transfer roll HP) for proper connection. Is the above component properly connected? Replace the sensor (2nd transfer roll retract HP). Go to “Sensor (2nd transfer roll retract HP) removal”. Replace the connection. 4 Check the 2nd transfer roll retract motor for proper operation. Caution: When performing motor tests, ensure that all cover and door interlock switches are overridden. 1. Enter the Diagnostics Menu. 2. Select MOTOR TESTS. 3. Select Printer motor tests. 4. Select 2nd transfer roll retract motor Does the above component operate properly? Go to step 6. Skip to step 5. 5 Check the 2nd transfer roll retract motor for proper connection. Is the above component properly connected? Replace the 2nd transfer roll retract motor. Go to Replace the connection. 6 Perform a print test. Does the error continue? Replace the lower printer engine card assembly. Go to “Lower printer engine card assembly removal”. Problem solved. 7 Perform a POR. Does the error occur when the power is turned off/on? Replace the lower printer engine card assembly. Go to “Lower printer engine card assembly removal”. Problem solved.

• Code: 904.05
• Description: Service transfer belt Sensor (CMY transfer roll retract HP) late error
• Remedy: 1 Perform a POR. Does the error occur when the power is turned off/on? Go to step 2. Perform several print tests. If the problem remains, go to step 2. 2 Replace the transfer belt unit assembly. Go to “Transfer belt unit assembly removal”. Does the error remain? Replace the lower printer engine card assembly. Go to “Lower printer engine card assembly removal”. Problem solved.

• Code: 904.06
• Description: Service transfer belt Sensor (CMY transfer roll retract HP) lag
• Remedy: 1 Check the transfer belt unit assembly. Is the above component properly installed? To to step 2 Properly reinstall the transfer belt unit assembly. 2 Perform a POR. Does the error occur when the power is turned off/on? Go to step 3. Perform several print tests. If the problem remains, go to step 3. 3 Replace the transfer belt unit assembly. Go to “Transfer belt unit assembly removal”. Does the error remain? Replace the lower printer engine card assembly. Go to “Lower printer engine card assembly removal”. Problem solved.

• Code: 904.07
• Description: Service transfer belt CMY transfer roll retract motor time out
• Remedy: 1 Perform a POR. Does the error occur when the power is turned off/on? Go to step 2. Perform several print tests. If the problem remains, go to step 2. 2 Replace the transfer belt unit assembly. Go to “Transfer belt unit assembly removal”. Does the error remain? Replace the lower printer engine card assembly. Go to “Lower printer engine card assembly removal”. Problem solved.

• Code: 905.00
• Description: Service engine error NVM read/write cannot be executed error
• Remedy: 1 Perform a POR. Does the error occur when the power is turned off/on? Go to step 2. Perform several print tests. If the problem remains, go to step 2. 2 Turn the printer off for 60 seconds. Does the error occur when the power is turned off/on again? Replace the printer engine card assembly. Go to “Upper printer engine card assembly removal”. Go to step 3. Problem solved. 3 Perform a POR. Does the error occur when the power is turned off/on? Replace the RIP card assembly. Go to “RIP card assembly removal”. Problem solved.