Lexmark CS720dte

• Code: 100.36...100.39
• Description: 100.36 The MPF paper present sensor is unplugged. 100.37 The duplex path 2 sensor is unplugged. 100.38 The fuser buckle sensor is unplugged. 100.39 The narrow media sensor cable is unplugged.
• Remedy: Step 1 Check the error that appeared. Is the error 100.35? Go to step 2. Go to step 5. Step 2 a Remove the cable cover from the front door. b Check if the cable is properly connected to the door and to the JMSNS1 connector on the controller board. Is the cable properly connected at both ends? Go to step 4. Go to step 3. Step 3 Reconnect the cable. Does the problem remain? Go to step 4. The problem is solved. Step 4 Replace the cable. Does the problem remain? Contact the next level of support. The problem is solved. Step 5 Check the following sensors for proper connection, and reseat if necessary: • Sensor (MPF empty) • Sensor (duplex path 1) • Sensor (fuser buckle) • Sensor (narrow media) Does the problem remain? Go to step 6. The problem is solved. Step 6 Check the sensors for damage, and replace if necessary. Does the problem remain? Contact the next level of support. The problem is solved.

• Code: 100.41...100.44
• Description: 100.41 The following sensors are unplugged: 1 Sensor (MPF-pass through) 2 Sensor (input) 3 Sensor (tray 1 pick) 100.42 The tray 1 pick sensor is unplugged. 100.43 The MPF pass.through sensor is unplugged. 100.44 The input sensor cable is unplugged.
• Remedy: Step 1 Check the error that appeared. Is the error 100.41? Go to step 3. Go to step 2. Step 2 Check the error that appeared. Is the error 100.44? Go to step 10. Go to step 3. Step 3 Check the cable on the JPKSNS1 connector on the controller board for proper connection. Is the cable properly connected? Go to step 5. Go to step 4. Step 4 Reconnect the cable. Does the problem remain? Go to step 5. The problem is solved. Step 5 Check the error that appeared. Is the error 100.42 or 100.43? Go to step 6. Go to step 10. Step 6 Check the sensor cables in the isolation unit for proper connection. Are the cables properly connected? Go to step 8. Go to step 7. Step 7 Reconnect the cables. Does the problem remain? Go to step 8. The problem is solved. Step 8 Check the green, yellow, and blue cables connecting the JPKSNS1 connector to the blue and green cables on the isolation unit for proper connection and damage. Replace the cables if necessary. Does the problem remain? Go to step 9. The problem is solved. Step 9 Replace the isolation unit. See “Isolation unit removal”. Does the problem remain? Contact the next level of support. The problem is solved. Step 10 Check the red cables connecting the JPKSNS1 connector to the sensor (input) for proper connection and damage, and replace if necessary. Does the problem remain? Go to step 11. The problem is solved. Step 11 Replace the sensor (input). See “Sensor (input) removal”. Does the problem remain? Contact the next level of support. The problem is solved.

• Code: 100.4D
• Description: The printhead thermistor reading is out of range.
• Remedy: Step 1 Reset the printer. Does the problem remain? Go to step 2. The problem is solved. Step 2 Check the cables on the printhead and on the JMIRR1 and JPH1 connectors on the controller board for proper connection. Are the cables properly connected at both ends? Go to step 4. Go to step 3. Step 3 Reconnect the cables. Does the problem remain? Go to step 4. The problem is solved. Step 4 Check the printhead cable for damage, and replace if necessary. Does the problem remain? Go to step 5. The problem is solved. Step 5 Replace the printhead. See “Printhead removal”. Does the problem remain? Go to step 6. The problem is solved. Step 6 Replace the controller board. See “Controller board removal”. Does the problem remain? Contact the next level of support. The problem is solved.

• Code: 102.20...102.42
• Description: 102.20 Tray 2 product ID is invalid. 102.21 Tray 2 board ID is invalid. 102.22 Tray 2 type is invalid. 102.30 Tray 3 product ID is invalid. 102.31 Tray 3 board ID is invalid. 102.32 Tray 3 type is invalid. 102.40 Tray 4 product ID is invalid. 102.41 Tray 4 board ID is invalid. 102.42 Tray 4 type is invalid.
• Remedy: Step 1 a Make sure that the latest firmware is installed. b Make sure that the options configuration is supported. See the Printer, Option, and Stand Compatibility Guide. c Reset the printer. Does the problem remain? Go to step 2. The problem is solved. Step 2 Reseat the interface cable, and then check the cable for damage. Is the cable free of damage? Go to step 4. Go to step 3. Step 3 Replace the cable. See “550-sheet tray interface cable removal”. Does the problem remain? Go to step 4. The problem is solved. Step 4 Check the printer interface cable and adjacent options for damage. Are the cable and options free of damage? Go to step 6. Go to step 5. Step 5 Replace the cable and options. Does the problem remain? Go to step 6. The problem is solved. Step 6 Replace the input option controller board. See “550-sheet tray controller board assembly removal”. Does the problem remain? Go to step 7. The problem is solved. Step 7 Reset the printer. Does the problem remain? Contact the next level of support. The problem is solved.

• Code: 110
• Description: 110.20 Printhead error was detected before the motor was turned on. 110.21 No printhead power when the laser servo started. 110.31 Printhead error (no first Hysnc) was detected. 110.32 Printhead error (lost first Hysnc) was detected. 110.33 Printhead error (lost first Hysnc) was detected during servo. 11.34 Printhead error (mirror motor lost lock) was detected. 110.35 Printhead error (mirror motor no first lock) was detected. 110.36 Printhead error (mirror motor never stabilized) was detected. 110.41 Printhead NVRAM read failure occurred. 110.70 Printhead NVRAM values were incorrect. 110.71 Printhead timing measurement error was detected. 110.90 Video cable unplugged. 110.91 Printhead timing reading error was detected. 110.92 Printhead NVRAM checksum mismatch occurred.
• Remedy: Step 1 Reset the printer. Does the problem remain? Go to step 2. The problem is solved. Step 2 Check the cables on the printhead and on the JMIRR1 and JPH1 connectors on the controller board for proper connection. Are the cables properly connected at both ends? Go to step 4. Go to step 3. Step 3 Reconnect the cables. Does the problem remain? Go to step 4. The problem is solved. Step 4 Check the printhead cable for damage, and replace if necessary. Does the problem remain? Go to step 5. The problem is solved. Step 5 Replace the printhead. See “Printhead removal”. Does the problem remain? Go to step 6. The problem is solved. Step 6 Replace the controller board. See “Controller board removal”. Does the problem remain? Contact the next level of support. The problem is solved.

• Code: 120
• Description: 120.80 The motor (fuser) did not turn on. 120.81 The motor (fuser) did not turn off. 120.82 The motor (fuser) speed did not ramp up to the required level. 120.83 The motor (fuser) stalled. 120.84 The motor (fuser) ran too slow. 120.85 The motor (fuser) ran too fast. 120.86 The motor (fuser) did not run at the correct timing.
• Remedy: Step 1 Reset the printer. Does the problem remain? Go to step 2. The problem is solved. Step 2 Check the fuser for damage or life expiration, and replace if necessary. See “Fuser removal”. Does the problem remain? Go to step 3. Go to step 4. Step 3 Check the motor cable on the JFUSED1 connector on the controller board for proper connection. Is the cable properly connected at both ends? Go to step 5. Go to step 4. Step 4 Reconnect the cable. Does the problem remain? Go to step 5. The problem is solved. Step 5 Check the cable for damage, and replace if necessary. Does the problem remain? Go to step 6. The problem is solved. Step 6 Remove the fuser, and then manually turn the fuser drive gear. Does the gear freely turn? Go to step 8. Go to step 7. Step 7 Replace the fuser drive gear. Does the problem remain? Go to step 8. The problem is solved. Step 8 Replace the motor (fuser). See “Motor (fuser) removal”. Does the problem remain? Go to step 9. The problem is solved. Step 9 Replace the controller board. See “Controller board removal”. Does the problem remain? Contact the next level of support. The problem is solved.