Canon iR4570 Series Service Manual page 891

Sub-item
RGW-
PORT
COM-
TEST
COM-
LOG
RGW-
ADR
<CCD>
Sub-item
CCD-
ADJ
DF-
WLVL1/
2
LUT-
ADJ2
COPIER > FUNCTION > INSTALL
for future expansion
for future expansion
for future expansion
for future expansion
COPIER > FUNCTION > CCD
Automatically adjusting CCD
<Operating procedure>
1) Place about 10 or more sheets of standard white paper (whitest paper
used by the user, excluding color print paper) on the document table.
2) Select <CCD-ADJ> to reverse its display. Then press the OK key.
3) Adjustment is executed automatically (about 15 seconds). During
adjustment, <ACTIVE> is displayed at the upper right of the screen.
4) The LED lamp (for document lighting) lights twice and the automatic
adjustment ends with <OK> displayed on the screen.
5) Since all items are updated in this service mode
(COPIER>ADJUST>CCD), enter the values into the service label.
Adjusting the ADF white level (Platen scan/Flow read scan)
<Operating procedure>
1) Place the user's usual paper on the document table and execute
COPIER>FUNCTION>CCD>DF-WLVL1: Read the white level in
Book mode (to check the transparency of the glass for Book mode).
2) Load the user's usual paper on DF and execute
COPIER>FUNCTION>CCD>DF-WLVL2: Read the white level in DF
(flow read) mode (to check the transparency of the glass for flow read).
(Reading both sides of the chart)
Front side read: Calculating DFTAR-R
Back side read: Calculating DFTAR2-R
Note: Both items shall be executed simultaneously.
Data 2 for CCD link correction
Description
T-16-32
Description
Chapter 16
Level
1
1
1
1
Level
1
1
2
16-47