• Code: 024-985
• Description: Bypass Tray Stop Check The Bypass Tray stopped running due to an obstruction.
• Causes:
• Remedy: 1. Check the paper size/ paper orientation/ paper type settings and press the Eject/Set key.

• Code: 025-596, 025-597
• Description: • 025-596: An NG occurred when HDD Fail Forecast of Diagnostics was executed. • 025-597: An error occurred when HDD initialization of Diagnostics was executed.
  HDD error has occurred due to one of the following problems. • A NG occurred when HDD Fail Forecast of Diagnostics was executed. • An error occurred when HDD initialization of Diagnostics was executed.
• Causes: • HDD, PL 12.4.20
• Remedy: 1. Reconnect the HDD wiring harness connectors. 2. If problem persists, replace the HDD Assembly).

• Code: 041-310
• Description: F/W Error IM software control error detected.
• Causes: • MCU PWB, PL 12.1.15
• Remedy: 1. Check the firmware version of the MCU PWB. Is it the latest MCU PWB firmware version? Replace the MCU PWB. Update firmware (Firmware Update).

• Code: 041-318 ... 041-322
• Description: I/D Error I/D error has occurred due to one of the following problems. • The serial number is mismatched. • The XPC is mismatched. • The data is mismatched. • 041-318: IOT Serial Number Fail • 041-321: XPC Fail • 041-322: IOT Data Fail
• Causes: • MCU PWB, PL 12.1.15
• Remedy: 1. Replace the MCU PWB.

• Code: 041-340
• Description: IOT NV-RAM Error NVM (EEPROM) data error. (The specific values are not in their specified addresses.)
• Causes: • MCU PWB, PL 12.1.15 • EEPROM PWB, PL 12.1.18
• Remedy: 1. Check the connection of the EEPROM. Is the EEPROM connected to the MCU PWB properly? Go to step 2. Reinstall the EEPROM. 2. Replace the EEPROM PWB. Does the error persist? Replace the MCU PWB. Troubleshooting complete.

• Code: 041-401
• Description: 300K Kit Error The print volume (PV) of the Dispense Motor, Trickle Motor, or Registration Roller has reached the specified value (A4 LEF imp = 300 kPV) which indicates that the lifespan is approaching the end.
• Causes: • Registration Roller (Registration Chute Assembly), PL 5.1.1 • Developer Housing Assemblies (C/ M/ Y/ K), PL 8.1.5 - PL 8.1.8 • Waste Auger Assembly (Trickle Guide), PL 8.1.10 • Dispense Motor Assembly, 8.1.15
• Remedy: 1. Perform DC135 HFSI. 2. Reset the 300K Kit (Chain-Link 950-876).

• Code: 042-323
• Description: (K) Drum Motor Failure The change of the port status at the failure of the Drum Motor is always monitored.
• Causes: • Imaging Unit (K), PL 6.1.4 • PR Harness Assembly (K), PL 11.1.23 • PR Drive Assembly Kit, PL 11.1.99 • MCU PWB, PL 12.1.15 • LVPS PWB, PL 12.2.1 • Main Harness Assembly, PL 12.3.1
• Remedy: 1. Check the installation state of the Imaging Unit (K)). Is the Imaging Unit (K) installed properly, with no contamination at the contact points and in contact with the left and right guides? Go to step 2. Clean the contact points. Reinstall the Imaging Unit (K). 2. Check the Drum Motor (K) operation. Perform DC330 Component Control [071-005] to check the rotation of the Drum Motor (K). Is the Motor working properly? Replace the MCU PWB. Go to step 3. 3. Check the installation of the Drum Motor (K)). Manually rotate the Drum Motor (K). Does the Motor rotate? Reinstall the Drum Motor (K). Go to step 4. 4. Check the connections between the Drum Motor (K) and MCU PWB, as well as between the Drum Motor (K) and LVPS PWB. Are the connectors P/J472, P/J4723, P/J4724, P/J524, P/J5246, and P/J5243 connected securely? Go to step 5. Re-connect the connectors P/J472, P/J4723, P/J4724, P/J524, P/J5246, and P/J5243. 5. Check the conductivity between the Drum Motor (K) and Relay Connector. Are the connections between P/J4724 <=> P/J4723 and between P/J5243 <=> P/J5246 conducting properly? Go to step 6. Replace the PR Harness Assembly (K). 6. Check the conductivity between the Relay Connector and LVPS PWB. Is the connection between P/J5246 <=> P/J524 conducting properly? Go to step 7. Replace the Main Harness Assembly. 7. Check the conductivity between the Relay Connector and MCU PWB. Is the connection between P/J4723 <=> P/J472 conducting properly? Go to step 8. Replace the Main Harness Assembly. 8. Check the voltage supply (+3.3VDC) to the Drum Motor (K). Measure the voltage between the MCU PWB GND <=> P/J472-16. Is there a voltage (approx. +3.3VDC) output? Go to step 9. Refer to +3.3VDC Power Troubleshooting. 9. Check the voltage supply (+24VDC) to the Drum Motor K. Measure the voltage between LVPS PWB GND <=> P/J524-5. Is there a voltage (approx. +24VDC) output? Close the Interlock Switch and check. Replace the Drum Motor (K)). Replace the LVPS PWB.

• Code: 042-329
• Description: HVPS2 Fan Failure The HVPS2 Fan is having rotation error.
• Causes: • HVPS2 Fan, PL 12.1.3 • MCU PWB, PL 12.1.15 • Top Harness Assembly, PL 12.2.4 • Main Harness Assembly, PL 12.3.1
• Remedy: 1. Check the HVPS2 Fan operation. Perform DC330 Component Control [042-005] to check the rotation of the HVPS2 Fan. Is the Fan working properly? Replace the MCU PWB. Go to step 2. 2. Check the installation of the HVPS2 Fan. Manually rotate the HVPS2 Fan. Does the Fan rotate? Reinstall the HVPS2 Fan. Go to step3. 3. Check the connection between the HVPS2 Fan and MCU PWB. Are the connectors P/J468, P/J4681, and P/J4683A connected securely? Go to step 4. Connect the connectors P/J468, P/J4681, and P/J4683A. 4. Check the conductivity between the HVPS2 Fan and Relay Connector. Is the connection between P/J4683A <=> P/J4681 conducting properly? Go to step 5. Replace the Top Harness Assembly. 5. Check the conductivity between the Relay Connector and MCU PWB. Is the connection between P/J4681 <=> P/J468 conducting properly? Replace the HVPS2 Fan. Replace the Top Harness Assembly.