• Code: 531
• Description: PR Motor malfunction
• Remedy: 1 • Initial checking: Is there any parts of wrong specifications used, improper mounting, damage, distortion, dirt, or adherence of foreign matter? • Major parts to be checked: P/R MOT&DRV ASSY, TRANSFER HIGH ASSY TR0 SENSOR, MCU PWB Replace or reinstall the relevant part. Go to step 2 2 • Checking whether the problem lies in engine or controller: Can a test print (single sheet / consecutive printing, about 10 sheets each) be performed normally with the engine alone? Check the Printer Controller. (If an error still occurs after replacing, go to step 3.)] Go to step 3 3 • Checking the Process Motor operation: When the test print is conducted, does the Process Motor operate? Go to step 9 Go to step 4 4 • Checking the P/R MOT&DRV ASSY for foreign matters: Is the operation of the PROCESS DRIVE ASSY blocked by foreign matters? Remove the foreign matters. • With the tool: Go to step 5 • Without the tool: Go to step 6 5 • Checking the P/R MOT&DRV ASSY Does the P/R MOT&DRV ASSY function properly? . By using the diagnostics commander, check by Digital Output Test device code "72". Replace the MCU PWB-XL Go to FIP-2.28 “Faulty P/R MOT & DRV ASSY” 6 • Checking the installation of P/R MOT&DRV ASSY: Has the P/R MOT&DRV ASSY been installed properly? Go to step 7 Reinstall the P/R MOT & DRV ASSY 7 • Checking the installation of TRANSFER HIGH ASSY: Has the TRANSFER HIGH ASSY been installed properly? Go to step 8 Reinstall the TRANSFER HIGH ASSY 8 • Checking the P/R MOT&DRV ASSY Does the output shaft of the P/R MOT&DRV ASSY turn smoothly when the rotor of the P/R MOT&DRV ASSY is turned by hand? Go to step 9 Replace the P/R MOT & DRV ASSY 9 • Checking the installation of TR0 SENSOR: Has the TR0 SENSOR been installed properly? • With the tool: Go to step 8 • Without the tool: Go to FIP-2.21 “Faulty TR0 SENSOR” Reinstall the TR0 SENSOR 10 • Checking the TR0 SENSOR Does the TR0 SENSOR function properly? . By using the diagnostics commander, check by Digital Input Test device code "42". Replace the MCU PWB-XL Go to FIP-2.21 “Faulty TR0 SENSOR”

• Code: 532
• Description: P/H Motor2 malfunction
• Remedy: 1 • Initial checking: Is there any parts of wrong specifications used, improper mounting, damage, distortion, dirt, or adherence of foreign matter? • Major parts to be checked: P/H MOTOR ASSY, FEED ROLL ASSY, MAIN P/H FRAME ASSY, WASTE TONER BOX, MCU PWB Replace or reinstall the relevant part. Go to step 2 2 • Checking whether the problem lies in engine or controller: Can a test print (single sheet / consecutive printing, about 10 sheets each) be performed normally with the engine alone? Check the Printer Controller. (If an error still occurs after replacing, go to step 3.) Go to step 3 3 • Checking the P/H Motor operation: When the test print is conducted, does the P/H Motor slightly operate and stop? Go to step 5 Go to step 4 4 • Checking the P/H Motor operation: When the test print is conducted, does the P/H Motor remain in stoppage? Go to FIP-2.29 “Faulty P/H MOTOR ASSY” Go to step 5 5 • Checking drive transmission: Does the rotor of the P/H MOTOR ASSY turn smoothly? • Check by turning the rotor of the P/H MOTOR ASSY counterclockwise with your hand. Go to step 6 Replace the faulty part(s). 6 • Checking the MAIN P/H FRAME ASSY: Does the MAIN P/H FRAME ASSY operate smoothly? Go to step 7 Replace the faulty part(s). 7 • Checking the WASTE TONER BOX: Does the rotor of the P/H MOTOR ASSY turn smoothly when the WASTE TONER BOX is removed? • Check by turning the rotor of the P/H MOTOR ASSY counterclockwise with your hand. Go to step 8 Replace the WASTE TONER BOX 8 • Checking the FEED ROLL ASSY: Does the FEED ROLL ASSY turn smoothly? • Depress the FEED SOLENOID armature and engage the gears and then check by turning the rotor of the P/H MOTOR ASSY counterclockwise with your hand. Go to FIP-2.29 “Faulty P/H MOTOR ASSY” Replace the faulty part(s).

• Code: 533
• Description: Thermosensor malfunction
• Remedy: 1 • Initial checking: Is there any parts of wrong specifications used, improper mounting, damage, distortion, dirt, or adherence of foreign matter? • Major parts to be checked: FUSER CONNECTOR, TEMP. SENSOR ASSY, H/R HEATER P/R HEATER, FUSER ASSY, MAIN HARNESS ASSY MCU PWB Replace or reinstall the relevant part. Go to step 2 2 • Checking whether the problem lies in engine or controller: Can a test print (single sheet / consecutive printing, about 10 sheets each) be performed normally with the engine alone? Check the Printer Controller. (If an error still occurs after replacing, go to step 3.)] Go to step 3 3 • FUSER CONNECTOR Is the FUSER CONNECTOR securely connected when the FUSER ASSY is mounted? Go to step 4 Check the FUSER CONNECTOR 4 • Checking the TEMP. SENSOR ASSY: Does the error occur immediately when the power is turned ON? Go to FIP-2.25 “Faulty TEMP. SENSOR ASSY” Go to step 5 5 • Checking the H/R HEATER and P/R HEATER: Do the H/R HEATER and P/R HEATER light when the FUSER ASSY is cold and the power is turned ON? Go to step 6 Replace the H/R HEATER , P/R HEATER 6 • Does the problem occur during the FUSER warm up? Go to FIP-2.25 “Faulty TEMP. SENSOR ASSY” Go to step 7 7 • Checking the MAIN HARNESS ASSY: Is there normal continuity between J21 . J32? Go to step 8 Replace the MAIN HARNESS ASSY 8 • Checking the LV/HV POWER SUPPLY: Is the voltage 5V DC between P21-1PIN . P21-2PIN? Go to step 9 Go to FIP-2.32 “Faulty LV/HV POWER SUPPLY” 9 • Checking the HETER ROD ON signal: Is the voltage between P/J33-1PIN . P/J12- 9PIN 0 VDC during the FUSER warm-up and 5.5 VDC when the warm-up is completed? Go to FIP-2.32 “Faulty LV/HV POWER SUPPLY” Replace the MCU PWB-XL

• Code: 534
• Description: Fuser Unit malfunction (Low Temperature)
• Remedy: 1 • Initial checking: Is there any parts of wrong specifications used, improper mounting, damage, distortion, dirt, or adherence of foreign matter? • Major parts to be checked: FUSER ASSY, MCU PWB, FUSER HARNESS ASSY FUSER CONNECTOR, FUSER ASSY, TEMP. SENSOR ASSY H/R HEATER, P/R HEATER, LV/HV POWER SUPPLY, MCU PWB Replace or reinstall the relevant part. Go to step 2 2 • Checking whether the problem lies in engine or controller: Can a test print (single sheet / consecutive printing, about 10 sheets each) be performed normally with the engine alone? Check the Printer Controller. (If an error still occurs after replacing, go to step 3.)] Go to step 3 3 • Checking the TEMP. SENSOR ASSY: Does the error occur immediately when the power is turned ON? Go to FIP-2.25 “Faulty TEMP. SENSOR ASSY” Go to step 4 4 • Checking the H/R HEATER and P/R HEATER: Do the H/R HEATER and P/R HEATER light when the FUSER ASSY is cold and the power is turned ON? Go to step 5 Replace the H/R HEATER , P/R HEATER 5 • Does the problem occur during the FUSER warm up? Go to FIP-2.25 “Faulty TEMP. SENSOR ASSY” Go to step 6 6 • Checking the MAIN HARNESS ASSY: Is there normal continuity between J21 . J32? Go to step 7 Replace the MAIN HARNESS ASSY 7 • Checking the LV/HV POWER SUPPLY: Is the voltage 5V DC between P21-1PIN . P21-2PIN? Go to step 8 Go to FIP-2.32 “Faulty LV/HV POWER SUPPLY” 8 • Checking the ON signal of HEATER ROD: Is the voltage between P/J33-1PIN . P/J12- 9PIN 0 VDC during the FUSER warm-up and 5 VDC when the warm-up is completed? Go to FIP-2.32 “Faulty LV/HV POWER SUPPLY” Replace the MCU PWB-XL

• Code: 535
• Description: Fuser Unit malfunction (Lamp)
• Remedy: 1 • Initial checking: Is there any parts of wrong specifications used, improper mounting, damage, distortion, dirt, or adherence of foreign matter? • Major parts to be checked: FUSER ASSY, MCU PWB, FUSER HARNESS ASSY FUSER CONNECTOR, FUSER ASSY, TEMP. SENSOR ASSY H/R HEATER, P/R HEATER, LV/HV POWER SUPPLY, MCU PWB Replace or reinstall the relevant part. Go to step 2 2 • Checking whether the problem lies in engine or controller: Can a test print (single sheet / consecutive printing, about 10 sheets each) be performed normally with the engine alone? Check the Printer Controller. (If an error still occurs after replacing, go to step 3.)] Go to step 3 3 • Checking the TEMP. SENSOR ASSY: Does the error occur immediately when the power is turned ON? Go to FIP-2.25 “Faulty TEMP. SENSOR ASSY” Go to step 4 4 • Checking the H/R HEATER and P/R HEATER: Do the H/R HEATER and P/R HEATER light when the FUSER ASSY is cold and the power is turned ON? Go to step 5 Replace the H/R HEATER , P/R HEATER 5 • Does the problem occur during the FUSER warm up? Go to FIP-2.25 “Faulty TEMP. SENSOR ASSY” Go to step 6 6 • Checking the MAIN HARNESS ASSY: Is there normal continuity between J21 . J32? Go to step 7 Replace the MAIN HARNESS ASSY 7 • Checking the LV/HV POWER SUPPLY: Is the voltage 5V DC between P21-1PIN . P21-2PIN? Go to step 8 Go to FIP-2.32 “Faulty LV/HV POWER SUPPLY” 8 • Checking the ON signal of HEATER ROD: Is the voltage between P/J33-1PIN . P/J12- 9PIN 0 VDC during the FUSER warm-up and 5 VDC when the warm-up is completed? Go to FIP-2.32 “Faulty LV/HV POWER SUPPLY” Replace the MCU PWB-XL

• Code: 536
• Description: Fuser Unit malfunction (Time out)
• Remedy: 1 • Initial checking: Is there any parts of wrong specifications used, improper mounting, damage, distortion, dirt, or adherence of foreign matter? • Major parts to be checked: FUSER ASSY, MCU PWB, FUSER HARNESS ASSY FUSER CONNECTOR, FUSER ASSY, TEMP. SENSOR ASSY H/R HEATER, P/R HEATER, LV/HV POWER SUPPLY, MCU PWB Replace or reinstall the relevant part. Go to step 2 2 • Checking whether the problem lies in engine or controller: Can a test print (single sheet / consecutive printing, about 10 sheets each) be performed normally with the engine alone? Check the Printer Controller. (If an error still occurs after replacing, go to step 3.)] Go to step 3 3 • Checking the TEMP. SENSOR ASSY: Does the error occur immediately when the power is turned ON? Go to FIP-2.25 “Faulty TEMP. SENSOR ASSY” Go to step 4 4 • Checking the H/R HEATER and P/R HEATER: Do the H/R HEATER and P/R HEATER light when the FUSER ASSY is cold and the power is turned ON? Go to step 5 Replace the H/R HEATER , P/R HEATER 5 • Does the problem occur during the FUSER warm up? Go to FIP-2.25 “Faulty TEMP. SENSOR ASSY” Go to step 6 6 • Checking the MAIN HARNESS ASSY: Is there normal continuity between J21 . J32? Go to step 7 Replace the MAIN HARNESS ASSY 7 • Checking the LV/HV POWER SUPPLY: Is the voltage 5V DC between P21-1PIN . P21-2PIN? Go to step 8 Go to FIP-2.32 “Faulty LV/HV POWER SUPPLY” 8 • Checking the ON signal of HEATER ROD: Is the voltage between P/J33-1PIN . P/J12- 9PIN 0 VDC during the FUSER warm-up and 5 VDC when the warm-up is completed? Go to FIP-2.32 “Faulty LV/HV POWER SUPPLY” Replace the MCU PWB-XL

• Code: 537
• Description: Fuser Unit malfunction (Overheat)
• Remedy: 1 • Initial checking: Is there any parts of wrong specifications used, improper mounting, damage, distortion, dirt, or adherence of foreign matter? • Major parts to be checked: FUSER CONNECTOR, TEMP. SENSOR ASSY, H/R HEATER P/R HEATER, FUSER ASSY, MAIN HARNESS ASSY MCU PWB Replace or reinstall the relevant part. Go to step 2 2 • Checking whether the problem lies in engine or controller: Can a test print (single sheet / consecutive printing, about 10 sheets each) be performed normally with the engine alone? Check the Printer Controller. (If an error still occurs after replacing, go to step 3.)] Go to step 3 3 • FUSER CONNECTOR Is the FUSER CONNECTOR securely connected when the FUSER ASSY is mounted? Go to step 4 Check the FUSER CONNECTOR 4 • Checking the TEMP. SENSOR ASSY: Does the error occur immediately when the power is turned ON? Go to FIP-2.25 “Faulty TEMP. SENSOR ASSY” Go to step 5 5 • Checking the H/R HEATER and P/R HEATER: Do the H/R HEATER and P/R HEATER light when the FUSER ASSY is cold and the power is turned ON? Go to step 6 Replace the H/R HEATER , P/R HEATER 6 • Does the problem occur during the FUSER warm up? Go to FIP-2.25 “Faulty TEMP. SENSOR ASSY” Go to step 7 7 • Checking the MAIN HARNESS ASSY: Is there normal continuity between J21 . J32? Go to step 8 Replace the MAIN HARNESS ASSY 8 • Checking the LV/HV POWER SUPPLY: Is the voltage 5V DC between P21-1PIN . P21-2PIN? Go to step 9 Go to FIP-2.32 “Faulty LV/HV POWER SUPPLY” 9 • Checking the HETER ROD ON signal: Is the voltage between P/J33-1PIN . P/J12- 9PIN 0 VDC during the FUSER warm-up and 5.5 VDC when the warm-up is completed? Go to FIP-2.32 “Faulty LV/HV POWER SUPPLY” Replace the MCU PWB-XL

• Code: 543
• Description: Rear fan malfunction
• Remedy: 1 • Initial checking: Is there any parts of wrong specifications used, improper mounting, damage, distortion, dirt, or adherence of foreign matter? • Major parts to be checked: DEVE. FAN, MCU PWB Replace or reinstall the relevant part. Go to step 2 2 • Checking whether the problem lies in engine or controller: Can a test print (single sheet / consecutive printing, about 10 sheets each) be performed normally with the engine alone? Check the Printer Controller. If an error still occurs after replacing, • With the tool: Go to step 3 • Without the tool: Go to step 4 • With the tool: Go to step 3 • Without the tool: Go to step 4 3 • Checking the DEVE. FAN: Does the DEVE. FAN function properly? . By using the diagnostics commander, check by Digital Output Test device code "60". Replace the MCU PWB-XL Go to step 4 4 • Checking the installation of DEVE. FAN: Has the DEVE. FAN been installed properly? Go to step 5 Reinstall the DEVE. FAN 5 • Checking the Main Harness: Is there breakage or faulty contact in the harness between the MCU PWB and the DEVE. FAN? Replace the MCU PWB-XL or DEVE. FAN Replace the DEVE. FAN