• Code: 151.02
• Description: Service engine error First transfer contact/retract failure
• Remedy: 1 Check the sensor (1st transfer rolls retract HP) for proper operation. 1.Enter the Diagnostics Menu. 2.Touch SENSOR TESTS. 3.Touch PRINTER SENSOR TESTS. 4.Touch Sensor (1st transfer rolls 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 3. Go to step 2. 2 Check the sensor (1st transfer rolls retract HP) for proper connection. Is the above component properly connected? Replace the 1st transfer retract clutch assembly. Go to “1st transfer retract clutch assembly removal” . Replace the connections. 3 Check the 1st BTR retract motor for proper operation. When performing motor tests, ensure that all cover and door interlock switches are overridden. 1.Enter the Diagnostics Menu. 2.Touch MOTOR TESTS. 3.Touch PRINTER MOTOR TESTS. 4.Touch 1st transfer rollers retract motor (contracted). 5.Touch 1st transfer rollers retract motor (retracted). Does the above component operate properly (motor rotating)? Go to step 5. Go to step 4. 4 Check the 1st BTR retract motor for proper connection. Is the above component properly connected? Replace the 1st BTR retract motor. Go to “Fuser/lower redrive/1st BTR retract motor removal” . Replace the connections. 5 POR the machine. Does the error continue? Replace the upper printer engine PCBA. Go to “Upper printer engine PCBA removal” . Problem resolved

• Code: 151.02
• Description: Service engine error First transfer contact/retract failure
• Remedy: 1 Check the sensor (1st transfer rolls retract HP) for proper operation. 1.Enter the Diagnostics Menu. 2.Touch SENSOR TESTS. 3.Touch PRINTER SENSOR TESTS. 4.Touch Sensor (1st transfer rolls 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 3. Go to step 2. 2 Check the sensor (1st transfer rolls retract HP) for proper connection. Is the above component properly connected? Replace the 1st transfer retract clutch assembly. Go to “1st transfer retract clutch assembly removal” . Replace the connections. 3 Check the 1st BTR retract motor for proper operation. When performing motor tests, ensure that all cover and door interlock switches are overridden. 1.Enter the Diagnostics Menu. 2.Touch MOTOR TESTS. 3.Touch PRINTER MOTOR TESTS. 4.Touch 1st transfer rollers retract motor (contracted). 5.Touch 1st transfer rollers retract motor (retracted). Does the above component operate properly (motor rotating)? Go to step 5. Go to step 4. 4 Check the 1st BTR retract motor for proper connection. Is the above component properly connected? Replace the 1st BTR retract motor. Go to “Fuser/lower redrive/1st BTR retract motor removal” . Replace the connections. 5 POR the machine. Does the error continue? Replace the upper printer engine PCBA. Go to “Upper printer engine PCBA removal” . Problem resolved

• Code: 151.02
• Description: Service engine error First transfer contact/retract failure
• Remedy: 1 Check the sensor (1st transfer rolls retract HP) for proper operation. 1.Enter the Diagnostics Menu. 2.Touch SENSOR TESTS. 3.Touch PRINTER SENSOR TESTS. 4.Touch Sensor (1st transfer rolls 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 3. Go to step 2. 2 Check the sensor (1st transfer rolls retract HP) for proper connection. Is the above component properly connected? Replace the 1st transfer retract clutch assembly. Go to “1st transfer retract clutch assembly removal” . Replace the connections. 3 Check the 1st BTR retract motor for proper operation. When performing motor tests, ensure that all cover and door interlock switches are overridden. 1.Enter the Diagnostics Menu. 2.Touch MOTOR TESTS. 3.Touch PRINTER MOTOR TESTS. 4.Touch 1st transfer rollers retract motor (contracted). 5.Touch 1st transfer rollers retract motor (retracted). Does the above component operate properly (motor rotating)? Go to step 5. Go to step 4. 4 Check the 1st BTR retract motor for proper connection. Is the above component properly connected? Replace the 1st BTR retract motor. Go to “Fuser/lower redrive/1st BTR retract motor removal” . Replace the connections. 5 POR the machine. Does the error continue? Replace the upper printer engine PCBA. Go to “Upper printer engine PCBA removal” . Problem resolved

• Code: 151.02
• Description: Service engine error First transfer contact/retract failure
• Remedy: 1 Check the sensor (1st transfer rolls retract HP) for proper operation. 1.Enter the Diagnostics Menu. 2.Touch SENSOR TESTS. 3.Touch PRINTER SENSOR TESTS. 4.Touch Sensor (1st transfer rolls 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 3. Go to step 2. 2 Check the sensor (1st transfer rolls retract HP) for proper connection. Is the above component properly connected? Replace the 1st transfer retract clutch assembly. Go to “1st transfer retract clutch assembly removal” . Replace the connections. 3 Check the 1st BTR retract motor for proper operation. When performing motor tests, ensure that all cover and door interlock switches are overridden. 1.Enter the Diagnostics Menu. 2.Touch MOTOR TESTS. 3.Touch PRINTER MOTOR TESTS. 4.Touch 1st transfer rollers retract motor (contracted). 5.Touch 1st transfer rollers retract motor (retracted). Does the above component operate properly (motor rotating)? Go to step 5. Go to step 4. 4 Check the 1st BTR retract motor for proper connection. Is the above component properly connected? Replace the 1st BTR retract motor. Go to “Fuser/lower redrive/1st BTR retract motor removal” . Replace the connections. 5 POR the machine. Does the error continue? Replace the upper printer engine PCBA. Go to “Upper printer engine PCBA removal” . Problem resolved

• Code: 154.01
• Description: Service engine error Developer (Y/M/C) motor
• Remedy: 1 Check the developer motor for proper operation. When performing motor tests, ensure that all cover and door interlock switches are overridden. 1.Enter the Diagnostics Menu. 2.Touch MOTOR TESTS. 3.Touch PRINTER MOTOR TESTS. 4.Touch Developer motor. Does the above component operate properly (motor rotating)? Go to step 3. Go to step 2. 2 Check the developer motor for proper connection. Is the above component properly connected? Replace the PC/developer drive motor. Go to “PC/developer drive motor removal” . Replace the connections. 3 POR the machine. Does the error continue? Replace the lower engine PCBA. Go to “Lower engine PCBA removal” . Go to step 4. Problem resolved 4 POR the machine. Does the error continue? Replace the upper printer engine PCBA. Go to “Upper printer engine PCBA removal” . Problem resolved

• Code: 154.01
• Description: Service engine error Developer (Y/M/C) motor
• Remedy: 1 Check the developer motor for proper operation. When performing motor tests, ensure that all cover and door interlock switches are overridden. 1.Enter the Diagnostics Menu. 2.Touch MOTOR TESTS. 3.Touch PRINTER MOTOR TESTS. 4.Touch Developer motor. Does the above component operate properly (motor rotating)? Go to step 3. Go to step 2. 2 Check the developer motor for proper connection. Is the above component properly connected? Replace the PC/developer drive motor. Go to “PC/developer drive motor removal” . Replace the connections. 3 POR the machine. Does the error continue? Replace the lower engine PCBA. Go to “Lower engine PCBA removal” . Go to step 4. Problem resolved 4 POR the machine. Does the error continue? Replace the upper printer engine PCBA. Go to “Upper printer engine PCBA removal” . Problem resolved

• Code: 155.01
• Description: Service engine error Toner dispense motor (K) failure
• Remedy: 1 Replace the toner cartridge. Does the error remain? Go to step 2. Problem resolved 2 Check the toner smart chip PCB. Is the above component properly connected? Go to step 3. Replace the connections. 3 Check the toner dispense motor for proper operation. When performing motor tests, ensure that all cover and door interlock switches are overridden. 1.Enter the Diagnostics Menu. 2.Touch MOTOR TESTS. 3.Touch PRINTER MOTOR TESTS. 4.Touch K toner dispense motor. Does the above component operate properly (motor rotating)? Go to step 5. Go to step 4. 4 Check the toner dispense motor for proper connection. Is the above component properly connected? Replace the toner dispense motor. Go to “Toner dispense motor removal” . Replace the connections. 5 POR the machine. Does the error continue? Replace the upper printer engine PCBA. Go to “Upper printer engine PCBA removal” . Problem resolved

• Code: 156.01
• Description: Service engine error Toner dispense motor (C) failure
• Remedy: 1 Replace the toner cartridge. Does the error remain? Go to step 2. Problem resolved 2 Check the toner smart chip PCB. Is the above component properly connected? Go to step 3. Replace the connections. 3 Check the toner dispense motor for proper operation. When performing motor tests, ensure that all cover and door interlock switches are overridden. 1.Enter the Diagnostics Menu. 2.Touch MOTOR TESTS. 3.Touch PRINTER MOTOR TESTS. 4.Touch C toner dispense motor. Does the above component operate properly (motor rotating)? Go to step 5. Go to step 4. 4 Check the toner dispense motor for proper connection. Is the above component properly connected? Replace the toner dispense motor. Go to “Toner dispense motor removal” . Replace the connections. 5 POR the machine. Does the error continue? Replace the upper printer engine PCBA. Go to “Upper printer engine PCBA removal” . Problem resolved