Canon iR3245, Service Manual

Page: 580 / 746

Chapter 17
17-82
T-17-34
COPIER > FUNCTION > CCD
Item Level Description
DF-WLVL1 1 Title ADF white level adjustment (platen board cover scan/stream reading scan)
Purpose Only when replacing the reader controller PCB, clearing RCON
Note Be sure to execute these two items (DF-WLVL1/DF-WLVL2) simultaneously.
Displays, settings and
adjustment ranges -
Unit -
Value at RAM clear -
Setting/Adjustment/Operation
method 1) Place a paper that users normally use on the copyboard glass and execute the following item;
COPIER > FUNCTION > CCD > DF-WLVL1.
: Read the white level in BOOK mode. (Check the transparency of the glass for BOOK mode.)
2) Set a paper that users normally use to the DF and execute the following item; COPIER >
FUNCTION > CCD > DF-WLVL2.
: Read the white level in DF mode (stream reading). (Check the transparency of the glass for stream
reading.)
(Read the both sides of chart.)
Reading the face: Calculate DFTAR-R
Reading the back: Calculate DFTAR2-R
OK/NG criteria -
Time required -
Related service modes COPIER > FUNCTION > CCD > DF-WLVL2 (level 1)
Additional description and
notes -
DF-WLVL2 1 Title ADF white level adjustment (platen board cover scan/stream reading scan)
Purpose Only when replacing the reader controller PCB, clearing RCON
Note Be sure to execute these two items (DF-WLVL1/DF-WLVL2) simultaneously.
Displays, settings and
adjustment ranges -
Unit -
Value at RAM clear -
Setting/Adjustment/Operation
method 1) Place a paper that users normally use on the copyboard glass and execute the following item;
COPIER > FUNCTION > CCD > DF-WLVL1.
: Read the white level in BOOK mode. (Check the transparency of the glass for BOOK mode.)
2) Set a paper that users normally use and execute the following item; COPIER > FUNCTION > CCD
> DF-WLVL2.
: Read the white level in DF mode (stream reading). (Check the transparency of the glass for stream
reading.)
(Read the both sides of chart.)
Reading the face: Calculate DFTAR-R
Reading the back: Calculate DFTAR2-R
OK/NG criteria -
Time required -
Related service modes COPIER > FUNCTION > CCD > DF-WLVL (level 1)
Additional description and
notes -
MTF-CLC 1 Title Calculating the MTF filter count to be set in ASICS based on the MTF value
Purpose [When replacing the CCD] Set the following item; COPIER > ADJUST > CCD > CCDCHNG (new
item) when replacing the CCD. Executing this mode calculates again the MTF filter count to be set in
ASICS.
[When replacing the CCD] When replacing the CCD, set the following value; COPIER > ADJUST >
CCD > MTF_M1 to 9 MTF_S1 to 9. Executing this mode calculates again the MTF filter count to be
set in ASICS.
[When replacing the RCON PCB] Perform backup for RCON (here, MTF2_M1 to 9 MTF2_S1 to
9(MTF value for CCD) and execute this mode to calculate again the MTF filter count to be set in
ASICS.
[When replacing the DFRCON PCB] Perform backup for RCON (here, MTF_M1 to 9 MTF_S1 to
9(MTF value for CCD) and execute this mode to calculate again the MTF filter count to be set in
ASICS.
Note -
Displays, settings and
adjustment ranges None
Unit -
Value at RAM clear
Setting/Adjustment/Operation
method 1) Select (highlight) the item, input the setting, and then press the OK key.
2) Turn off/on the main power switch.
OK/NG criteria
Time required -
Related service modes COPIER > ADJUST > CCD > MTF-M1 to 9 MTF-S1 to 9 MTF2-M1 to 9 MTF2-S1 to 9 (level 1)
Additional description and
notes Calculate the MTF filter count to be set in ASICS based on the MTF value of each CCD in COPIER
> ADJUST > CCD > MTF-M1 to 9 MTF-S1 to 9 MTF2-M1 to 9 MTF2-S1 to 9.