• Code: 312.302
• Description: Finisher Front Door Interlock Open. Finisher Front Door Switch Open was detected.
• Remedy: • Finisher Front Door Switch for proper installation • Finisher Front Door Switch connectors for connection failure • Actuator part for deformation • Ensure that the Eject Cover is in the closed/down position
  Enter dc330 Component Control [012-302], Front Door Interlock Switch (PL 24.11 Item 2). Select Start. Open and close the Front Door. The display changes. Y↓ N→Go to Finisher Interlocks. Disconnect P8314 on the Finisher PWB. +5 VDC is measured between the Finisher PWB P8314-2 and P8314-3. Y↓ N→Replace the Finisher Main PWB. There is less than 5 ohms between P8314-3 and the finisher frame. Y↓ N→Replace the Finisher Main PWB. Go to Finisher Interlocks. Check the wires between the Finisher PWB, the Eject Cover Switch and the Finisher Front Door Switch for an open circuit or poor contact. If the wires are good, replace the Front Door Interlock Switch. Select Stop. Check the following: • Alignment between the Front Door and the Front Door Interlock Switch • Front Door and Front Cover for proper installation • Actuator for damage or bent • Magnet for proper mounting If the above checks are OK, replace the Finisher Main PWB.

• Code: 312.303
• Description: Finisher H-Transport Cover Open. The Finisher H-Transport Cover is open.
• Remedy: • Check the installation of the H-Transport Open Sensor. • Opening/closing of the Finisher H-Transport Cover.
  Execute dc330 Component Control [012-303], H-Transport Open Sensor. Actuate the H-Transport Open Sensor (PL 23.4). The display changes. Y↓ N→Check the wire between P/J8860 pin 2 and J8987 pin 2 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 J8987, pins 3 and 1 on the Finisher PWB (Horizontal Paper Transportation). The voltage is approx. +5VDC. Y↓ N→Replace the Finisher PWB. Measure the voltage between J8987, pin 2 on the Finisher PWB and GND (Horizontal Paper Transportation). Actuate the H-Transport Open Sensor. The voltage changes. Y↓ N→Replace the H-Transport Open Sensor (PL 23.4). Replace the Finisher PWB. If the problem continues, replace the Finisher PWB.

• Code: 312.303
• Description: H-Transport Cover Open. H-Transport Interlock Sensor-L Open was detected.
• Remedy: • The H-Transport Interlock Sensor-L for improper installation • Check for obstruction in between the H-Transport Cover and the H-Transport paper transport area • The H-Transport Cover Interlock Sensor connectors for connection failure • The Actuator for deformation
  Select Start. Block and unblock the H-Transport Interlock Sensor-L. The display changes. Y↓ N→+5 VDC is measured between the H-Transport Interlock Sensor P/J8445--1 and -3. Y↓ N→Go to Finisher Horizontal Transportation (2 of 2). Disconnect J8310 on Finisher PWB. +5 VDC is measured between H Transport Interlock Sensor P/ P/ J8445-1 and -3. Y↓ N→Replace the H-Transport PWB (PL 24.44 Item 19). Check for an open circuit between H-Transport PWB P/J8396-3 and -1 and H-Transport Interlock Sensor P/J8445-1 and -3. +5 VDC is measured between Finisher PWB J8310-20 and ground. Y↓ N→Replace the Finisher Main PWB +5 VDC is measured at the H-Transport Interlock Sensor J8445-2 and ground. Y↓ N→Check for an open circuit between H-Transport Interlock Switch P/J8445-1 and HTransport Interlock Sensor P/J8445-2. Replace the H-Transport Interlock Sensor. Select Stop. Check the following: • Alignment between the H-Transport Cover and the H-Transport Interlock Sensor • The H-Transport Cover for proper installation • The Actuator for bending or alignment • The Magnets for proper mounting

• Code: 312.307
• Description: Booklet Drawer Set Fault. Booklet Drawer Set Sensor Open was detected.
• Remedy: • The Booklet Drawer Set Sensor for improper installation • The Booklet Drawer Set Sensor connectors for connection failure • The Actuator part for deformation
  Enter dc330 Component Control [013-104], Booklet Drawer Set Sensor (PL 24.51 Item 7). Select Start. Remove and insert the Booklet Drawer manually. The display changes. Y↓ N→Select Stop. Go to Booklet Drive. Check continuity between the Booklet Drawer Set Sensor and Finisher PWB. The continuity check is OK. Y↓ N→Repair the open circuit or short circuit. Replace the Booklet Drawer Set Sensor (PL 24.51 Item 7). If the problem continues, replace the Finisher Main PWB. Select Stop. If the problem continues, replace the Finisher Main PWB.

• Code: 312.334
• Description: Download Mode Fault. Failure in previous download (abnormal termination during download); can only start in Download Mode upon turning power On.
• Remedy: Download defective; check the following: • Cable connection between Finisher and IOT is not connected or defective • Finisher power cable is plugged in properly

• Code: 312.334
• Description: Download Mode Failure. Failure in previous download (abnormal termination during download); can only start in Download Mode upon turning power on.
• Remedy: Download defective; check the following: • Cable connection between Finisher and IOT is not connected or defective. • The Finisher power cable is plugged in properly.

• Code: 312.350
• Description: Finisher Communication. Communication is not established between the MD PWB and the Finisher PWB in A/P Finisher.
• Remedy: Switch the machine power Off and On. The 012-350 is still present. Y↓ N→Return to Service Call Procedures. Check P/J8300 on the Finisher PWB and J590 on the MD PWB for a secure connection (Finisher Detection & Communication). Check the condition of the wires. Check the connections between the A/P Finisher and the IOT. If the connectors were recently disconnected and reconnected check for damaged pins. Check for less than 1 VDC at P/J590-1 on the MD PWB. Less than 1 VDC is measured. Y↓ N→Check the wire between P/J590-1 on the MD PWB and J8300-11 on the Finisher PWB for damage or a break. Repair as required. If the wire is good, replace the MD PWB. Replace the Finisher Main PWB.

• Code: 312.700
• Description: Punch Box Nearly Full. Punch Box nearly full.
• Remedy: Empty the Punch Box (PL 23.2 Item 11) and re-insert. If the fault remains, check the circuit of the Punch Box Set Sensor (Punch Control).