Remedy: 1 Is connector CN18 on the CK1 daughter card board connected properly? Go to step 2. Plug the connector in securely. 2 Replace the temperature and humidity sensor (a component of the paper feed gear). Did this fix the problem? Problem solved. Replace the printer controller board.
Code: 993
Description: CPU Error
Remedy: Replace the printer controller board.
Code: 994
Description: Density Sensor Error
Remedy: 1 Is the front door fully closed? Go to step 2. Close the front door. 2 Is the density sensor actuator stuck in place? Release the density sensor actuator. Go to step 3. 3 Are connectors CN406 and CN407 on the sensor board connected properly? Go to step 4. Plug the connector in securely. 4 Is connector CN15 on the printer controller board connected properly? Replace the density sensor. Go to step 5. Plug the connector in securely. 5 Did replacing the density sensor fix the problem? Problem solved. Replace the printer controller board.
Code: 995
Description: Finisher Main Feed Motor abnormal
Remedy: 1 Is there jammed paper or other obstructions in the paper path? Clear the paper path. Go to step 2. 2 Check to ensure the connector PJ6 on the finisher control board and the feed motor assembly cable are properly connected. Are the cables properly connected? Go to step 3. Properly connect the cables. 3 Make sure the finisher set switch is activated. Measure for +24 V dc (±10%) between pins 7 and 8 and +5 V dc (±10%) between pins 7 and 6 on the feed motor assembly cable connector CN1. Is either voltage missing? Go to step 4. Go to step 5. 4 Disconnect the feed motor assembly cable and PJ6 on the finisher control board. Measure continuity on the cable for all positions. Is there continuity? Go to step 6. Replace the cable. 5 Replace the feed motor assembly. Did this resolve the problem? Problem solved. Replace the finisher control board. 6 Measure for +24 V dc between pins 1 and 2 on connector PJ3 on the finisher control board. Measure for +5 V dc between pins 1 and 3 on PJ2 on the finisher control board. Is either voltage missing? Replace the power supply. Replace the finisher control board.
Code: 996
Description: Finisher Jogging Motor Error
Remedy: 1 Are there foreign objects or obstructions in the jogging assembly? Clear the objects or obstruction. Go to step 2. 2 Are the jogging motor connectors CN2 on the finisher control board securely connected? Go to step 3. Securely connect the connectors. 3 Make sure the finisher set switch is activated. Measure for +24 V dc (±10%) between pin 1 on CN2 and frame ground. Is +24 V dc present? Go to step 4. Go to step 5. 4 Replace the jogging motor assembly. Did this resolve the problem? Problem solved. Replace the finisher control board. 5 Disconnect CN2 and PJ5. Perform a continuity check on the cable for all positions. Is there continuity? Go to step 6. Replace the cable. 6 Check for +24 V dc (±10%) between pins 1 and 2 of PJ3 on the finisher control board. Is +24 V dc present? Replace the finisher control board. Replace the power supply.
Code: 997
Description: Finisher Tractor Motor Error
Remedy: 1 Are there obstructions or foreign objects in the accumulator or face down paper path? Remove the objects or obstructions. Go to step 2. 2 Are the connectors CN3 at the tractor motor and PJ4 on the finisher control board securely connected? Go to step 3. Securely connect the connectors. 3 Make sure the finisher set switch is activated. Measure +24 V dc between pin 1 of tractor motor connector CN3 and frame ground. Is +24 V dc (±10%)? Go to step 4. Go to step 5. 4 Replace the tractor motor assembly. Did this resolve the problem? Problem solved. Replace the finisher control board. 5 Disconnect CN3 and PJ4 on the finisher control board and perform a continuity check on all positions. Is there continuity on all positions? Go to step 6. Replace the cable. 6 Check for +24 V dc between pins 1 and 2 of PJ3 on the finisher control board. Is +24 V dc present? Replace the finisher control board. Replace the power supply.