Panasonic UF-890 Service Manual page 147

4.4.16 Scanned Copy Quality Problems
Is the LED Array abnormal?
Are there any foreign particles or
paper pieces in the scanning area?
Is the scanning area dirty?
Are the Transmitting Rollers
dirty?
Is the Scanner Block abnormal?
START
Yes
No
Yes
No
Yes
No
Yes
No
Yes
No
END
Replace the LED Array.
Remove the foreign particles or paper
pieces from the scanning area.
1. Clean the Scanning Glass (Sect. 2.5).
2. Clean Mirrors 1 and 2 (Sect. 2.6).
Clean the rollers (Sect. 2.5).
1. Check CN5 (FCB PCB).
2. Check CN30 (CCD PCB).
3. Replace the Scanner Assembly (340) (Sect. 2.6).
4. Replace the FCB PCB (Sect. 2.5).
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