■Completely blank

Step

Cause

Check

Result

Remedy

 

 

 

 

 

 

 

 

 

 

 

White level data

Is the problem solved by

 

Perform the acquisition of

1

malfunction

performing the

Yes

white level data. (Function

 

acquisition of white level

code 55)

 

 

 

 

 

data. (Function code 55)

 

 

 

 

 

 

 

2

CCD unit failure

Is the problem solved by

Yes

Replace the CCD unit.

 

replacing the CCD unit.

 

 

 

 

 

 

 

 

 

 

3

Main PCB failure

Is the problem solved by

Yes

Replace the main PCB.

 

replacing the main PCB.

 

 

 

 

 

 

 

 

 

 

■ Vertical streaks

<User Check>

- Check if the ADF glass or document glass is not stained.

Step

Cause

Check

Result

Remedy

 

 

 

 

 

 

 

 

 

 

1

CCD unit failure

Is the problem solved by

Yes

Replace the CCD unit.

 

replacing the CCD unit.

 

 

 

 

 

 

 

 

 

 

 

ADF or

Is the problem solved by

 

Replace the scanner unit.

2

document glass

replacing the scanner

Yes

 

 

failure

unit.

 

 

 

 

 

 

 

■White vertical streaks

<User Check>

- Check if the ADF glass or document glass is not stained.

Step

Cause

Check

Result

Remedy

 

 

 

 

 

 

 

 

 

 

1

CCD unit failure

Is the problem solved by

Yes

Replace the CCD unit.

 

replacing the CCD unit.

 

 

 

 

 

 

 

 

 

 

 

ADF or

Is the problem solved by

 

Replace the scanner unit.

2

document glass

replacing the scanner

Yes

 

 

failure

unit.

 

 

 

 

 

 

 

3-79

Confidential