• Code: 5102-140.10
• Description: Main motor failure to turn
  Main motor halls not detected.
• Causes: • Main drive gearbox • Main motor (M1) • Controller board (CTLB)
• Remedy: 1 Remove the main drive gearbox and check for any debris. 2 Remove the debris if any abnormality is found. 3 Check the gears of main drive gearbox for wear or damage. Replace the main drive gearbox if any abnormality is found. 4 Check M1 for proper operation. 1. Remove the main drive gearbox. Note: Do not disconnect the main drive gearbox cable. 2. Enter the Service Mode and conduct a Paper Passage Test: Select [Service Mode] -> [State Confirmation Test] -> [Paper Passage Test], and select any of the feed sections. 3. Check if M1 rotates when doing the feed test. 5 Replace the CTLB. 6 Replace the main drive gearbox.

• Code: 5102-140.20
• Description: Main motor failure to turn
  Main motor took too long to stop.
• Causes: • Main drive gearbox • Main motor (M1) • Controller board (CTLB)
• Remedy: 1 Remove the main drive gearbox and check for any debris. 2 Remove the debris if any abnormality is found. 3 Check the gears of main drive gearbox for wear or damage. Replace the main drive gearbox if any abnormality is found. 4 Check M1 for proper operation. 1. Remove the main drive gearbox. Note: Do not disconnect the main drive gearbox cable. 2. Enter the Service Mode and conduct a Paper Passage Test: Select [Service Mode] -> [State Confirmation Test] -> [Paper Passage Test], and select any of the feed sections. 3. Check if M1 rotates when doing the feed test. 5 Replace the CTLB. 6 Replace the main drive gearbox.

• Code: 5102-140.30
• Description: Main motor failure to turn
  Main motor unable to lock (before motor ID).
• Causes: • Main drive gearbox • Main motor (M1) • Controller board (CTLB)
• Remedy: 1 Remove the main drive gearbox and check for any debris. 2 Remove the debris if any abnormality is found. 3 Check the gears of main drive gearbox for wear or damage. Replace the main drive gearbox if any abnormality is found. 4 Check M1 for proper operation. 1. Remove the main drive gearbox. Note: Do not disconnect the main drive gearbox cable. 2. Enter the Service Mode and conduct a Paper Passage Test: Select [Service Mode] -> [State Confirmation Test] -> [Paper Passage Test], and select any of the feed sections. 3. Check if M1 rotates when doing the feed test. 5 Replace the CTLB. 6 Replace the main drive gearbox.

• Code: 5102-140.40
• Description: Main motor failure to turn
  Main motor overspeed detected.
• Causes: • Main drive gearbox • Main motor (M1) • Controller board (CTLB)
• Remedy: 1 Remove the main drive gearbox and check for any debris. 2 Remove the debris if any abnormality is found. 3 Check the gears of main drive gearbox for wear or damage. Replace the main drive gearbox if any abnormality is found. 4 Check M1 for proper operation. 1. Remove the main drive gearbox. Note: Do not disconnect the main drive gearbox cable. 2. Enter the Service Mode and conduct a Paper Passage Test: Select [Service Mode] -> [State Confirmation Test] -> [Paper Passage Test], and select any of the feed sections. 3. Check if M1 rotates when doing the feed test. 5 Replace the CTLB. 6 Replace the main drive gearbox.

• Code: 5102-140.60
• Description: Main motor failure to turn
  Main motor unable to lock (after motor ID).
• Causes: • Main drive gearbox • Main motor (M1) • Controller board (CTLB)
• Remedy: 1 Remove the main drive gearbox and check for any debris. 2 Remove the debris if any abnormality is found. 3 Check the gears of main drive gearbox for wear or damage. Replace the main drive gearbox if any abnormality is found. 4 Check M1 for proper operation. 1. Remove the main drive gearbox. Note: Do not disconnect the main drive gearbox cable. 2. Enter the Service Mode and conduct a Paper Passage Test: Select [Service Mode] -> [State Confirmation Test] -> [Paper Passage Test], and select any of the feed sections. 3. Check if M1 rotates when doing the feed test. 5 Replace the CTLB. 6 Replace the main drive gearbox.

• Code: 5102-140.70
• Description: Main motor failure to turn
  Main motor out of lock detected.
• Causes: • Main drive gearbox • Main motor (M1) • Controller board (CTLB)
• Remedy: 1 Remove the main drive gearbox and check for any debris. 2 Remove the debris if any abnormality is found. 3 Check the gears of main drive gearbox for wear or damage. Replace the main drive gearbox if any abnormality is found. 4 Check M1 for proper operation. 1. Remove the main drive gearbox. Note: Do not disconnect the main drive gearbox cable. 2. Enter the Service Mode and conduct a Paper Passage Test: Select [Service Mode] -> [State Confirmation Test] -> [Paper Passage Test], and select any of the feed sections. 3. Check if M1 rotates when doing the feed test. 5 Replace the CTLB. 6 Replace the main drive gearbox.

• Code: 5102-140.80
• Description: Main motor failure to turn
  Transport motor excessive PWM or overtemp.
• Causes: • Main drive gearbox • Main motor (M1) • Controller board (CTLB)
• Remedy: 1 Remove the main drive gearbox and check for any debris. 2 Remove the debris if any abnormality is found. 3 Check the gears of main drive gearbox for wear or damage. Replace the main drive gearbox if any abnormality is found. 4 Check M1 for proper operation. 1. Remove the main drive gearbox. Note: Do not disconnect the main drive gearbox cable. 2. Enter the Service Mode and conduct a Paper Passage Test: Select [Service Mode] -> [State Confirmation Test] -> [Paper Passage Test], and select any of the feed sections. 3. Check if M1 rotates when doing the feed test. 5 Replace the CTLB. 6 Replace the main drive gearbox.

• Code: 5501-126.01
• Description: AC signal abnormality
  Line frequency outside operating range of device.
• Causes: Power supply unit (PU)
• Remedy: 1 Check the power cord for continuity. Replace if necessary. 2 Make sure the nominal voltage source is within specification. Low-voltage models: 100 to 127 V AC High-voltage models: 220 to 240 V AC 3 Check if the power supply cable is properly connected to the CTLB. Reseat the cables if any abnormality is found 4 Measure the resistance between terminals A and D of the power supply socket. 1. Turn off the printer. 2. Remove the power cord. 3. Measure the resistance between terminals A and D of the power supply socket. 4. Is the resistance approximately 30 ohms? 5 Replace the PU if any abnormality is found in the measured resistance.