• Code: 25
• Display: All LEDs blinking (Scan Error)
• Description: 1. All lamps on the operator panel blink.
• Causes: DCU Mode : Perform DCU diagnostic code 05. If the DCU error code 95 is displayed, replace LSU.

• Code: 26
• Display: Not function of the gear of the fuser due to melting away
• Description: The motor breaks away from its place due to gear melting away.
• Causes: DCU Mode : Check if the Error States '60' '62' '68' occur. Check the operation of Fuser Erasing Lamp On/Off with the Error Code Check -10-.

• Code: 27
• Display: Paper Empty
• Description: The paper lamp on the operator panel is on even when paper is loaded in the cassette.
• Causes: 1. Bending or deformation of the actuator of the paper sensor. 2. The function of the engine board is defective Perform DCU mode: Perform DCU diagnostic code 8.

• Code: 28
• Display: Paper Empty without indication
• Description: The paper lamp on the operator panel does not come on when the paper cassette is empty.
• Causes: 1. Bending or deformation of the actuator of the paper sensor. 2. The function of the engine board is defective Perform. DCU mode : Perform DCU diagnostic code 8.

• Code: 29
• Display: Cover Open
• Description: The ERROR lamp is on even when the print cover is closed.
• Causes: 1. The hook lever in the top cover may be defective. 2. Check the connector (CN1 : Engine Bfd.HVPS) and circuit of the cover switch department in the Main Control board. Perform DCU mode : If Error state '64' occurs, Check the related codes of the Cover Open Error.

• Code: 30
• Display: No lamp on when the cover is open
• Description: The ERROR lamp does not come on even when the printer cover is open
• Causes: 1. Check the connector(CN8) and circuit of the cover switch department in the Main Control board. Perform DCU mode : If Error state '64' occurs, Check the related codes of the Cover Open Error

• Code: 31
• Display: Defective motor operation
• Description: Main motor is not driving when printing, and paper does not feed into the printer, resulting 'Jam 0'.
• Causes: 1. Motor harness or sub PCB may be defective. 2. Perform DCU diagnostic code 00 and Check the motor operation.

• Code: 32
• Display: No Power
• Description: When system power is turned on, all lamps on the operator panel do not come on.
• Causes: 1. Check if the power input and SMPS output are normal. 2. Check the inferiority of LED-Panel on the front-cover if the LED of Panel does not appear after normal warmingup.