Image Is Out Of Focus - Kyocera TASKalfa 6501i Service Manual

(13) Image is out of focus.

Print example
1. Table scanning and DP-scanning first (front) page
Defective part
Original document
1
Contact glass
2
Mirror
3
Lens
4
CCD sensor
5
Adjustment of the
scanner
6
ISU
7
ISC PWB
8
Main PWB
9
2. DP-scanning second (back) page
Defective part
DP_CIS glass
1
DP_CIS glass
2
White-reference
roller (Counter the
3
CIS)
Check description
Check whether the original
document is wavy.
Check whether the contact glass
is dew condensed.
Check whether the mirror is dew
condensed.
Check whether the lens is dew
condensed.
Check whether the CCD sensor
glass is dew condensed.
Check the automatic adjustment
of the scanner.
Confirm the position of the lens
and the CCD sensor.
The ISC PWB is defective.
The main PWB is defective.
Check description
Check whether the CIS glass is
dew condensed.
Check whether the CIS glass is
contaminated.
Check that the white-reference
roller is smoothly operative.
If the original document is wavy, straighten.Or,
replace the original document.
If the contact glass is dew condensed, remove
the dew.
If the mirrors are dew-condensed, remove the
dew.
If the lens is dew condensed, remove the dew.
If the CCD sensor glass is dew condensed,
remove the dew.
Perform maintenance mode U411,
table(Chart1)_All.
(see page 1-3-152)
If the lenses and the CCD sensor are
misaligned, replace the ISU and perform U411.
Replace the ISC PWB and perform U411.
(see page 1-3-152)
Replace the main PWB.(see page 1-5-74)
If the CIS glass is dew condensed, remove the
dew.
If the CIS glass is contaminated, clean the CIS
glass. If it has a scuff, replace.
If the white-reference roller does not rotate
smoothly, re-install.
1-4-193
Corrective Action
Corrective Action
2N8/2N7