Scanned Copy Quality Problems - Panasonic UF-8300 Service Manual

4.3.16. Scanned Copy Quality Problems

Is the LED Array abnormal?
Check with F4 Mode (Check Output)
No.120 Lamp.
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 Assembly abnormal?
START
No
No
No
No
No
END
Yes
Replace the CIS Assembly.
Yes
Remove the foreign particles, or paper pieces
from the scanning area.
Yes
1. Clean the Scanning Glass.
2. Clean the White Sheet.
Yes
Clean the rollers.
Yes
1. Check SC PCB.
2. Check CIS Assembly.
3. Replace the SC PCB (Sect. 2.).
4. Replace the CIS Assembly (Sect. 2.).
114
UF-8300/8200
UF-7300/7200