Code :

Code: 986
Description: Transparency (OHP) Sensor Error
Remedy: 1 Are connectors CN4 (light emitting) and CN5 (light receiving) on the CK1 daughter board connected properly? Go to step 2. Plug the connector in securely. 2 Test the sensor. While actuating the sensor, does the voltage fluctuate between 0 V and +5 between pins 2 and 3 of connector CN7 of the printer controller board? Replace the printer controller board. Replace the MPF unit.

Code: 987
Description: Service Toner Cartridge
Remedy: 1 Turn the printer off and then back on. Did this fix the error? Problem solved. Go to step 2. 2 Try different toner cartridges. Did this fix the error? Problem solved. Go to step 3. 3 Check the cable connections on the RFID antenna, and CN 21 on the printer controller card. Are they properly connected? Go to step 4. Properly connect the connections. 4 Check the RFID cable. Is it damaged? Replace the RFID cable. Replace the printer controller board.

Code: 991
Description: Service Paper Option
Remedy: 1 POR the printer. Does the error return? Go to step 2. Problem solved. 2 Check connections CN3,4,5,17,18 on the printer controller board. Are they properly connected? Go to step 3. Properly connect the connectors. 3 Are the size sensing levers bent or damaged? Replace the size sensing levers. Go to step 4. 4 Replace the CK 2 daughter board. Did this solve the problem? Problem solved. Go to step 5. 5 Are any actuators on the paper-feed unit damaged? Replace the paper-feed unit. Replace the printer controller board.

Code: 992
Description: Temperature/Humidity Sensor Error
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: 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.

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