• Code: 012-302
• Description: Finisher Front Door Interlock Open (A/P Finisher) Finisher Front Door Switch Open was detected.
• Remedy: Check the following components: • 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 Service Diagnostics Menu: Printer Menu > Troubleshooting > Service Tools > Printer Status Page > hold the Up and Down buttons simultaneously > Run Service Diagnostics > OK. Actuate the Front Door Interlock Switch (PL 21.3). Open and close the Front Door. The display changes. Y↓N→Disconnect P/J8314 on the Finisher PWB. +5 VDC is measured between the Finisher PWB P8314-2 and P8314-3. Y↓N→Replace the Finisher PWB (PL 21.12). There is less than 5 ohms between P?J8314-3 and the finisher frame. Y↓N→Replace the Finisher PWB (PL 21.12). 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 (PL 21.3). 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 PWB (PL 21.12).

• Code: 012-303
• Description: H-Transport Cover Open H-Transport Cover Interlock Sensor Open was detected.
• Remedy: Check the following components: • The H-Transport Cover Interlock Sensor for improper installation • Check for obstruction in the between the H-Transport Cover and the H-Transport paper transport area • The H-Transport Cover Interlock Sensor connectors for connection failure • The Actuator part for deformation
  Enter Service Diagnostics Menu: Printer Menu > Troubleshooting > Service Tools > Printer Status Page > hold the Up and Down buttons simultaneously > Run Service Diagnostics > OK. Block and unblock the H-Transport Interlock Sensor (PL 21.25). The display changes. Y↓N→+5 VDC is measured between the H-Transport Interlock Sensor J8445-1 and -3. Y↓N→Disconnect P/J8396 on the Finisher PWB. +5 VDC is measured between Finisher PWB P/J8396-1 and -3. Y↓N→Replace the Finisher PWB (PL 21.3). Check for an open circuit between Finisher PWB P/J8396-3 and -1 and H-Transport Interlock Sensor J8445-1 and -3. +5 VDC is measured between Finisher PWB P/J8396-2 and ground. Y↓N→Replace the Finisher PWB (PL 21.3). +5 VDC is measure between H-Transport Interlock Switch J8454-2 and ground. Y↓N→Check the wire between the H-Transport Interlock Switch J8454-2 and the Finisher PWB P/J8396-2 for an open circuit or poor contact. +5 VDC is measured between H-Transport Interlock Switch J8454-1 and ground. Y↓N→Replace the H-Transport Interlock Switch (PL 21.24). +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 J8454-1 and HTransport Interlock Sensor J8445-2. Replace the H-Transport Interlock Sensor (PL 21.25). Check the following: • Alignment between the H-Transport Cover and the H-Transport Interlock Sensor. • Alignment between the H-Transport Cover and the H-Transport Interlock Switch. • The H-Transport Cover for proper installation • The Actuator for bending or alignment • The Magnets for proper mounting

• Code: 012-307
• Description: Booklet Drawer Set Fail Booklet Drawer Set Sensor OPEN was detected.
• Remedy: • Check the Booklet Drawer Set Sensor for improper installation. • Check the Booklet Drawer Set Sensor connectors for connection failure. • Check the Actuator part for deformation.
  Enter Service Diagnostics Menu: Printer Menu > Troubleshooting > Service Tools > Printer Status Page > hold the Up and Down buttons simultaneously > Run Service Diagnostics > OK. Perform the Booklet Drawer Set Sensor test. Remove and insert the Booklet Drawer (PL 21.15) manually. The display changes. Y↓N→Check continuity between the Booklet Drawer Set Sensor and Finisher Main PWB. The continuity check is OK. Y↓N→Repair the open circuit or short circuit. Replace the Booklet Drawer Set Sensor (PL 21.15). If the problem continues, replace the Finisher PWB (PL 21.12). If the problem continues, replace the Finisher PWB (PL 21.12).

• Code: 012-350
• Description: Finisher Communication Fail Finisher Communication has failed.
• Remedy: There are no diagnostic routines for problems involving serial communications. It is recommended that you address the following assemblies in this order: 1. Finisher PWB (PL 21.12) 2. Engine Control Board (MCU) (PL 13.1) 3. Perform continuity checks on any wiring harnesses involved.

• Code: 012-900
• Description: Paper at Buffer Path Sensor Control logic reports paper at the Buffer Path Sensor.
• Remedy: Check the following: • Paper on the Buffer Path Sensor • Obstructions in the paper path
  Enter Service Diagnostics Menu: Printer Menu > Troubleshooting > Service Tools > Printer Status Page > hold the Up and Down buttons simultaneously > Run Service Diagnostics > OK. Actuate the Buffer Path Sensor (PL 21.10). The display changes. Y↓N→Check the circuit of the Buffer Path Sensor. Refer to Transmissive Sensor Procedure 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 • Finisher for a docking failure If the above checks are OK, then replace the Buffer Path Sensor (PL 21.10). If the problem persists, replace the Finisher PWB (PL 21.12).

• Code: 012-901
• Description: Paper at H-Transport Entrance Sensor (A/P Finisher) Control logic reports paper at the H-Transport Entrance Sensor.
• Remedy: • Check paper on the H-Transport Entrance Sensor. • Check for obstructions in the paper path. • Check the H-Transport Drive Motor Belt for wear or damage. • Check the Guides on the H-Transport Cover for damage, wear or faulty installation.
  Enter Service Diagnostics Menu: Printer Menu > Troubleshooting > Service Tools > Printer Status Page > hold the Up and Down buttons simultaneously > Run Service Diagnostics > OK. Open the H-Transport Cover and actuate the H-Transport Entrance Sensor (PL 21.25). The display changes. Y↓N→Check the circuit of the H-Transport Entrance Sensor. Refer to Transmissive Sensor Procedure 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 • H-Transport and Finisher for a docking failure • 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 21.25). If the problem persists, replace the Finisher PWB (PL 21.12).

• Code: 012-902
• Description: Paper at H-Transport Exit Sensor Control logic reports paper at the H-Transport Exit Sensor.
• Remedy: • Check paper on the H-Transport Exit Sensor. • Check for obstructions in the paper path. • Check the H-Transport Drive Motor Belt for wear or damage. • Check the Guides on the H-Transport Cover for damage, wear or faulty installation.
  Enter Service Diagnostics Menu: Printer Menu > Troubleshooting > Service Tools > Printer Status Page > hold the Up and Down buttons simultaneously > Run Service Diagnostics > OK. Open the H-Transport Cover and actuate the H-Transport Tray Exit Sensor (PL 21.25). The display changes. Y↓N→Check the circuit of the H-Transport Tray Exit Sensor. Refer to Transmissive Sensor Procedure 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 • H-Transport and Finisher for a docking failure • 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 21.25). If the problem persists, replace the Finisher PWB (PL 21.12).

• Code: 012-903
• Description: Paper at Compiler Exit Sensor (Finisher) Control logic reports paper at the Compiler Exit Sensor.
• Remedy: • Check paper on the Compiler Exit Sensor. • Check for obstructions in the paper path.
  Enter Service Diagnostics Menu: Printer Menu > Troubleshooting > Service Tools > Printer Status Page > hold the Up and Down buttons simultaneously > Run Service Diagnostics > OK. Open the H-Transport Cover and actuate the Compiler Exit Sensor (PL 21.9). The display changes. Y↓N→Check the circuit of the Compiler Exit Sensor. Refer to Transmissive Sensor Procedure 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 • Exit Motor Belt for wear or damage • Exit Pinch Rollers 1 and 2 for damage • Lower Exit Roller for wear or damage • Synchronous Belt for wear or damage If the above checks are OK, then replace the Compiler Exit Sensor (PL 21.9). If the problem continues, replace the Finisher PWB (PL 21.12).