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Troubleshooting. Check point for Fatal error 4

Occurrence timing CR position

• Power on
• Anywhere

• Operation
• Anywhere

Detailed phenomenon Defective unit/part name Check point Remedy
The eject rollers are rotating at high speed when power is turned on. (For about 1 cycle.) PF Scale/PF Encoder Sensor 1. Check if the PF Scale is not damaged or contaminated.
1. Replace the PF Scale with a new one.
    2. Check if the PF Encoder Sensor is not damaged. 2. Replace the PF Encoder Sensor with a new one.
The Scanner Carriage Unit does not operate. Lower Scanner Housing 1. Check if the grease is applied enough on the surface of the Guide Rail of the Lower Scanner Housing. 1. Apply the grease on the surface of the Guide Rail of the Lower Scanner Housing after wiping the old grease with a dry, soft cloth.
A paper feeding sequence failed to feed the paper, but a paper ejection sequence is performed. ASF Unit 1. Check if the PE Sensor Connector Cable is connected to CN7 on the Main Board.
1. Connect the PE Sensor Connector Cable to CN7 on the Main Board.
2. Check if the PE Sensor Connector Cable is not damaged. 2. Replace the ASF Unit with a new one.
3. Check if the PE Sensor is not damaged. 3. Replace the ASF Unit with a new one.
Error Code
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