• Code: 012-925
• Description: Stacker Lower Safety Warning Stacker Safety Switch On was detected.
• Remedy: Check for obstacles in the under the Stacker Tray Bracket. The problem is resolved. Y↓N→Enter Service Diagnostics Menu: Printer Menu > Troubleshooting > Service Tools > Printer Status Page > hold the Up and Down buttons simultaneously > Run Service Diagnostics > OK. Move the Stacker Tray manually. The display changes. Y↓N→Check conductivity between the Stacker Safety Switch and Finisher PWB. The conducting check is OK. Y↓N→Repair the open circuit or short circuit. Check the operation and conductivity of the Stacker Safety Switch contact points. The contact points are operating and conducting properly. Y↓N→Replace the Stacker Safety Switch. Replace the Finisher PWB (PL 21.12). Replace the Finisher PWB (PL 21.12). If the problem continues, replace the Finisher PWB (PL 21.12).

• Code: 012-935
• Description: Paper at Xport Entrance Sensor Control logic reports paper at the Xport Entrance Sensor.
• Remedy: • Check for obstructions in the paper path • Check that the Finisher is dock correctly to ensure proper Transport Gate operation
  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 Transport Entrance Sensor (PL 21.10). The display changes. Y↓N→Check the circuit of the 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 • 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 Transport Entrance Sensor (PL 21.25). If the problem persists, replace the Finisher PWB (PL 21.12).

• Code: 012-936
• Description: Paper Remains at Booklet Sensor A Paper remains at Booklet Sensor A.
• Remedy: 1. Check paper jammed (present) at Booklet In Sensor, located at the top of the Booklet Maker. Remove paper if present. 2. If no paper present, perform Diagnostics test for Booklet Sensors for testing the Sensors. 3. The following displays and should toggle: • In is [H | L] Explanation: • Paper Present = L • No Paper Present = H 4. Check for +5 VDC and for ground connection up to infrared (IC) sensor (the two outside connector wires). The middle wire is the signal (sense) out line and should reveal a toggle to the correct state, if working. 5. Replace the Sensor if power/ground exists to the Sensor, but Sensor output fails to toggle.

• Code: 012-944
• Description: Stacker Set Over Full The Staple Set Count exceeded the maximum number of sheets on the Stacker Tray during the Staple Set Eject operation.
• Remedy: Remove all paper from the Stacker. Perform the job again. The problem is resolved Y↓N→Replace the Finisher PWB (PL 21.12). Check the following: • Eject Motor Gears for wear or damage. • Paddle Shaft and Paddles for wear or damage.

• Code: 012-945
• Description: Low Staples The Low Staple Sensor turned ON just before the Staple Motor started running.
• Remedy: • Check the Stapler Head connectors for connection failure. • Check the staple remaining amount.
  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 Low Staple Sensor (PL 21.6). ‘LOW’ (staples available) is displayed. Y↓N→Check continuity between the Stapler Head and Finisher PWB. The continuity check is OK. Y↓N→Repair the open circuit or short circuit. Replace the Stapler Head (PL 21.6). If the problem continues, replace the Finisher PWB (PL 21.12). If the problem continues, replace the Finisher PWB (PL 21.12).

• Code: 012-946
• Description: Top Tray Full The Top Tray Full Sensor was turned On for 10 seconds continuously.
• Remedy: • Check the Top Tray Full Sensor for improper installation. • Check the Top Tray Full Sensor connectors for connection failure. • Check the Top Tray Full Sensor Actuator for deformation and operation failure.
  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 Top Tray Full Sensor. (PL 21.11) The display changes. Y↓N→Check continuity between the Top Tray Full Sensor and Finisher PWB. The continuity check is OK. Y↓N→Repair the open circuit or short circuit. Replace the Top Tray Full Sensor (PL 21.11). If the problem continues, replace the Finisher PWB (PL 21.12). If the problem continues, replace the Finisher PWB (PL 21.12).

• Code: 012-948, 015-400, 112-700
• Description: Puncher Waste Bin Nearly Full Cumulative punching count reached the specified times (2-hole punching: 5000 times, 4-hole punching: 2500 times). This procedure can be used for troubleshooting Chain Link code 012- 948, 015-400, or 112-700.
• Remedy: Remove the Puncher Waste Bin and discard its dust. Install the Puncher Waste Bin. The problem resolved. Y↓N→Enter Service Diagnostics Menu: Printer Menu > Troubleshooting > Service Tools > Printer Status Page > hold the Up and Down buttons simultaneously > Run Service Diagnostics > OK. Run the Puncher Box Set Sensor test. Remove and insert the Puncher Waste Bin. The display changes. Y↓N→Check continuity between the Puncher Box Set Sensor and Finisher Main PWB. The continuity check is OK. Y↓N→Repair the open circuit or short circuit. Replace the Puncher Box Set Sensor (PL 21.5). If the problem continues, replace the Finisher PWB (PL 21.12). Replace the Finisher PWB (PL 21.12). Ensure the Puncher Waste Bin is installed properly.

• Code: 012-949
• Description: Puncher Waste Bin Open/Reseat Punch Box The Puncher Waste Bin Set Sensor detected Off (No Puncher Waste Bin).
• Remedy: • Check the Puncher Waste Bin Set Sensor for improper installation. • Check the Puncher Waste Bin Set Sensor connectors for connection failure. • Check the Puncher Waste Bin Actuator part for deformation and damage. • Check the Guide for deformation. • Check the Guide for a foreign substance.
  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 Puncher Box Set Sensor (PL 21.5). Remove and insert the Puncher Waste Bin manually. The display changes. Y↓N→Check continuity between the Puncher Box Set Sensor and Finisher Main PWB. The continuity check is OK. Y↓N→Repair the open circuit or short circuit. Replace the Puncher Box Set Sensor (PL 21.5). If the problem continues, replace the Finisher PWB (PL 21.12). Check the Puncher Waste Box Actuator and Guide for deformation. The Puncher Waste Bin can be removed and inserted properly. Y↓N→Repair or replace the Puncher Waste Bin (PL 21.5). If the problem continues, replace the Finisher PWB (PL 21.12).