• Code: 310.421
• Description: Fuser Assembly Life Over Warning. The Fuser Assembly has reached the end of its life span.
• Remedy: Replace the Fuser Assembly with a new one and clear dc135 CRU/HFSI Read & Reset [954-850]. If the problem persists, replace the MCU PWB.

• Code: 312.111
• Description: H-Transport Entrance Sensor Off Jam A. The H-Transport Entrance Sensor did not turn off within the specified time after it turned on.
• Remedy: Check the H-Transport Drive Rolls (PL 23.4) and Pinch Rolls (PL 23.3) for wear or contamination. Check for obstructions or damage in the paper path. The Paper Path is OK. Y↓ N→Clean or replace as required. Execute dc330 Component Control [012-190], H-Transport Entrance Sensor. Actuate the HTransport Entrance Sensor (PL 23.4). The display changes. Y↓ N→Check the wire between P/J8861 pin 2 and J8897 pin 6 for an open or short circuit, or a loose or damaged connector. The wire is OK. Y↓ N→Repair/reconnect as required. Measure the voltage between J8897, pins 4 and 5 on the Finisher PWB (Horizontal Paper Transportation). The voltage is approx. +5VDC. Y↓ N→Replace the Finisher PWB. Measure the voltage between J8897, pin 6 on the Finisher PWB and GND (Horizontal Paper Transportation). Actuate the H-Transport Entrance Sensor. The voltage changes. Y↓ N→Replace the H-Transport Entrance Sensor (PL 23.4). Replace the Finisher PWB. Power Off the printer. Open the H-Transport Top Cover. Cheat the H-Transport Interlock Sensor. Power On the printer. The H-Transport Belt rotates. Y↓ N→Check the wires between P/J8862 on the H-Transport Motor and J8897 on the Finisher PWB for an open or short circuit, or a loose or damaged connector. The wires are OK. Y↓ N→Repair/reconnect as required. Measure the resistance of the H-Transport Motor between each pin P/J8862-1/2/5/6 (Horizontal Paper Transportation). The resistance is approx. 20 Ohm. Y↓ N→Replace the H-Transport Motor. Replace the Finisher PWB. If the problem persists, replace the H-Transport Motor. Check the H-Transport Entrance Sensor and H-Transport Motor circuits for an intermittent condition. If the problem continues, replace the Finisher PWB.

• Code: 312.112
• Description: H-Transport Entrance Sensor On Jam A. After the Fuser Exit Sensor turned on, the H-Transport Entrance Sensor did not turn on within the specified time.
• Remedy: Check the H-Transport Drive Rolls (PL 23.4) and Pinch Rolls (PL 23.3) for wear or contamination. Check for obstructions or damage in the paper path. The Paper Path is OK. Y↓ N→Clean or replace as required. Execute dc330 Component Control [012-190], H-Transport Entrance Sensor. Actuate the HTransport Entrance Sensor (PL 23.4). The display changes. Y↓ N→Check the wire between P/J8861 pin 2 and P8987 pin 6 for an open or short circuit, or a loose or damaged connector. The wire is OK. Y↓ N→Repair/reconnect as required. Measure the voltage between P8987, pins 4 and 5 on the Finisher PWB (Horizontal Paper Transportation). The voltage is approx. +5VDC. Y↓ N→Replace the Finisher PWB. Measure the voltage between P8987, pin 6 on the Finisher PWB and GND (Horizontal Paper Transportation). Actuate the H-Transport Entrance Sensor. The voltage changes. Y↓ N→Replace the H-Transport Entrance Sensor (PL 23.4). Replace the Finisher PWB. Power Off the printer. Open the H-Transport Top Cover. Cheat the H-Transport Interlock Sensor. Power On the printer. The H-Transport Belt rotates. Y↓ N→Check the wires between P/J8862 on the H-Transport Motor and P8987 on the Finisher PWB for an open or short circuit, or a loose or damaged connector. The wires are OK. Y↓ N→Repair/reconnect as required. Measure the resistance of the H-Transport Motor between each pin P/J8862-1/2/5/6 (Horizontal Paper Transportation). The resistance is approx. 20 Ohm. Y↓ N→Replace the H-Transport Motor. Replace the Finisher PWB. If the problem persists, replace the H-Transport Motor. Check the H-Transport Entrance Sensor and H-Transport Motor circuits for an intermittent condition. If the problem continues, replace the Finisher PWB.

• Code: 312.112
• Description: H-Transport Entrance Sensor On Jam. H-Transport Entrance Sensor is not turned on within a specified time.
• Remedy: • Check for obstructions in the paper path. • Check the H-Transport Motor Belt for wear or damage. • Check the Guides on the H-Transport Cover for damage, wear or faulty installation.
  Enter dc330 Component Control [012-190], H-Transport Entrance Sensor (PL 24.4 Item 12). Select Start. Open the H-Transport Cover and actuate the H-Transport Entrance Sensor. The display changes. Y↓ N→Go to Finisher Horizontal Transportation (1 of 2). Check the circuit of the HTransport Entrance Sensor. Refer to the Transmissive Sensor RAP for troubleshooting procedure. Select [012-090], H-Transport Motor (PL 24.6 Item 22). Select Start. The motor energizes. Y↓ N→Select Stop. Go to Finisher H-Transport Drives. Check the circuit of the HTransport Motor. Refer to the Transmissive Sensor for troubleshooting procedure. Select Stop. Close the H-Transport Cover. Select [012-086] or [012-087], Gate Solenoid (PL 24.41 Item 37). Select Start. The Gate Solenoid actuates. Y↓ N→Select Stop. Go to Finisher H-Transport Drives. Check the circuit of the Gate Solenoid. Refer to the Set Gate Solenoid Open RAP for troubleshooting procedure. Select Stop. Check the following: • Ensure that the connectors shown in the circuit diagrams are securely connected and that the wires are not damaged. • Check the H-Transport Motor and its associated gears and belts for damage, contamination or misalignment. If the above checks are OK, then replace the H-Transport Entrance Sensor (PL 24.4 Item 12). If the problem persists, replace the Finisher Main PWB.

• Code: 312.113
• Description: Booklet In Sensor On Jam. The Booklet In Sensor did not turn on within the specified time after Punch Out Sensor On.
• Remedy: • Check for obstructions in the paper path. • Check that the Finisher is dock correctly to ensure proper Transport Gate operation. • Check the Booklet In Sensor (PL 24.57 Item 5) for obstructions. • Check for transportation failure of non-standard paper. • Check the Booklet In Roll for wear or damage.
  Enter dc330 Component Control [013-135], Booklet In Sensor (PL 24.57 Item 5). Select Start. Actuate the Booklet In Sensor. The display changes. Y↓ N→Go to Booklet Transportation. Check the circuit of the Booklet In Sensor. Refer to the Transmissive Sensor for troubleshooting procedure. Select [013-068] and/or [013-069], Booklet Gate Solenoid (PL 24.42 Item 9). Select Start. The Booklet Gate Solenoid actuates. Y↓ N→Select Stop. Go to Finisher Booklet/ Punch Transport. Check the circuit of the Booklet Gate Solenoid. Refer to the Set Gate Solenoid Open RAP for troubleshooting procedure. Select [012-001], Finisher Transport Motor (PL 24.41 Item 26). Select Start. The motor energizes. Y↓ N→Select Stop. Go to Finisher H-Transport Drives. Check the circuit of the Finisher Transport Motor. Refer to the Multiple Wire Motor RAP for troubleshooting procedure. Select Stop. Check the following: • Ensure that the connectors shown in the circuit diagrams are securely connected and that the wires are not damaged. • Check the H-Transport Motor and its associated gears and belts for damage, contamination or alignment. • Check the Finisher Transport Motor and its associated gears and belts for damage, contamination or alignment. If the above checks are OK, then replace the Booklet In Sensor (PL 24.57 Item 5). If the problem persists, replace the Finisher Main PWB.

• Code: 312.114
• Description: Booklet In Sensor Off Jam. The Booklet In Sensor did not turn off within the specified time.
• Remedy: • Check for obstructions in the paper path. • Check that the Finisher is dock correctly to ensure proper Transport Gate operation. • Check the Booklet In Sensor (PL 24.57 Item 5) for obstructions. • Check for transportation failure of non-standard paper. • Check the Booklet In Roll for wear or damage.
  Enter dc330 Component Control [013-135], Booklet In Sensor (PL 24.57 Item 5). Select Start. Actuate the Booklet In Sensor. The display changes. Y↓ N→Go to Booklet Transportation. Check the circuit of the Booklet In Sensor. Refer to the Transmissive Sensor RAP for troubleshooting procedure. Select [013-068] and/or [013-069], Booklet Gate Solenoid (PL 24.42 Item 9). Select Start. The Booklet Gate Solenoid actuates. Y↓ N→Select Stop. Go to Finisher Booklet/ Punch Transport. Check the circuit of the Booklet Gate Solenoid. Refer to the Set Gate Solenoid Open RAP for troubleshooting procedure. Select [013-064], Booklet Paper Path Motor (PL 24.58 Item 4). Select Start. The motor energizes. Y↓ N→Select Stop. Go to Booklet Drive. Check the circuit of the Booklet Paper Path Motor. Refer to the Multiple Wire Motor RAP for troubleshooting procedure. Select Stop. Check the following: • Ensure that the connectors shown in the circuit diagrams are securely connected and that the wires are not damaged. • Check the H-Transport Motor and its associated gears and belts for damage, contamination or alignment. • Check the Booklet Paper Path Motor and its associated gears and belts for damage, contamination or alignment. If the above checks are OK, then replace the Booklet In Sensor (PL 24.57 Item 5). If the problem persists, replace the Finisher Main PWB.

• Code: 312.115
• Description: Booklet Folder Roll Exit Sensor On Jam. Booklet Folder Roll Exit Sensor is not turned off within a specified time.
• Remedy: • Check for obstructions in the paper path • Check that the Finisher is dock correctly to ensure proper Transport Gate operation. • Check the Booklet Folder Roll Exit Sensor (PL 24.57 Item 21) for obstructions. • Check for transportation failure of non-standard paper. • Check the Booklet Folding Roll for wear or damage. • Check the Booklet Eject Roll Drive rolls for wear or damage.
  Enter dc330 Component Control [013-103], Booklet Folder Roll Exit Sensor (PL 24.57 Item 21). Select Start. Actuate the Booklet Folder Roll Exit Sensor. The display changes. Y↓ N→Go to Booklet Transportation. Check the circuit of the Booklet Folder Roll Exit Sensor. Refer to the Transmissive Sensor RAP for troubleshooting procedure. Select [013-064], Booklet Paper Path Motor (PL 24.58 Item 4). Select Start. The motor energizes. Y↓ N→Select Stop. Go to Booklet Drive. Check the circuit of the Booklet Paper Path Motor. Refer to the Multiple Wire Motor RAP for troubleshooting procedure. Select Stop. Select [013-008], Booklet Folder Roll Motor (PL 24.58 Item 2). Select Start. The motor energizes. Y↓ N→Select Stop. Go to Booklet Drive. Check the circuit of the Booklet Folder Roll Motor. Refer to the Multiple Wire Motor RAP for troubleshooting procedure. Check the following: • Ensure that the connectors shown in the circuit diagrams are securely connected and that the wires are not damaged. • Check the Booklet Paper Path Motor and its associated gears and belts for damage, contamination or alignment. • Check the Booklet Folder Roll Motor and its associated gears and belts for damage, contamination or alignment. If the above checks are OK, then replace the Booklet Folder Roll Exit Sensor (PL 24.57 Item 21). If the problem persists, replace the Finisher Main PWB.

• Code: 312.123
• Description: H-Transport Exit Sensor On Jam. H-Transport Exit Sensor is not turned on within a specified time.
• Remedy: • Check for obstructions in the paper path. • Check that the Finisher is dock correctly to ensure proper Transport Gate operation. • Check the H-Transport Motor Belt for wear or damage. • Check the Guides on the H-Transport Cover for damage, wear or faulty installation.
  Enter dc330 Component Control [012-191], H-Transport Exit Sensor (PL 24.6 Item 8). Select Start. Open the H-Transport Cover and actuate the H-Transport Exit Sensor. The display changes. Y↓ N→Go to Finisher Horizontal Transportation (2 of 2). Check the circuit of the HTransport Exit Sensor. Refer to the Transmissive Sensor RAP for troubleshooting procedure. Select [012-090], H-Transport Motor (PL 24.6 Item 22). Select Start. The motor energizes. Y↓ N→Select Stop. Go to Finisher H-Transport Drives. Check the circuit of the HTransport Motor. Refer to the Multiple Wire Motor RAP for troubleshooting procedure. Select Stop. Close the H-Transport Cover. Select [012-086] or [012-087], H-Transport Gate Solenoid (PL 24.2). Select Start. The Gate Solenoid actuates. Y↓ N→Select Stop. Go to Finisher H-Transport Drives. Check the circuit of the Gate Solenoid. Refer to the Set Gate Solenoid Open RAP for troubleshooting procedure. Select Stop. Check the following: • Ensure that the connectors shown in the circuit diagrams are securely connected and that the wires are not damaged. • Check the H-Transport Motor and its associated gears and belts for damage, contamination or misalignment. If the above checks are OK, then replace the H-Transport Exit Sensor (PL 24.6 Item 8). If the problem persists, replace the Finisher Main PWB.