Canon MF8580Cdw Service Manual page 247

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Disassembly/Assembly > Document exposure/feeder system > Removing the CIS Unit > After replacing CIS units
CAUTION:
When installing the CIS Unit, be sure to check that the projection [1] is fitted to the dent [2]
to install.
[2] [1]
■ After replacing CIS units
1) Execute the white level adjustment. If it fails, turn OFF/ON the power and execute the
operation again.
• COPIER > FUNCTION > CCD > CL-AGC (Color AGC adjustment)
• COPIER > FUNCTION > CCD > BW-AGC (B&W AGC adjustment)
2) After executing the reading position adjustment with the following service mdoe 1, check
the auto setting value with the following service mode 2 and write the value in the service
label.
1. COPIER> FUNCTION> INSTALL> STRD-POS (reading position adjustment auto
execution)
2. COPIER> ADJUST> ADJ-XY> STRD-POS (reading position adjustment value
reference)
4 Disassembly/Assembly > Document exposure/feeder system > Removing the CIS Unit > After replacing CIS units
[2] [1]
F-4-399
3) Set a blank paper on the Copyboard Glass, and execute the white level adjustment with
the following service mode 1. Then, check the auto setting value with the following service
mode 2 and write the value in the service label.
1. White level adjustment
• COPIER > FUNCTION > CCD > DF-WLVL1 (White level adjustment [copyboard
scanning])
• COPIER > FUNCTION > CCD > DF-WLVL3 (White level adjustment BW [copyboard
scanning])
Then, set a blank paper on the DF, and execute the following service mode.
• COPIER > FUNCTION > CCD > DF-WLVL2 (White level adjustment [DF scanning])
• COPIER > FUNCTION > CCD > DF-WLVL4 (White level adjustment BW [DF
scanning])
If it fails, turn OFF/ON the power and execute the operation again.
2. Checking the setting value
• COPIER> ADJUST> CCD> DFTAR-R (RED shading target value when using DF)
• COPIER> ADJUST> CCD> DFTAR-G (GREEN shading target value when using DF)
• COPIER> ADJUST> CCD> DFTAR-B (BLUE shading target value when using DF)
• COPIER> ADJUST> CCD> DFTAR-BW (Monochrome shading target value when
using DF)
4) Execute the reading position adjustment with the following service mode.
• COPIER > ADJUST > ADJ-XY > ADJ-Y (Value adjustment for image reading start
position [vertical scanning direction] <X-axis direction>)
• COPIER > ADJUST > ADJ-XY > ADJ-Y-DF (Adjustment of surface horizontal scanning
position in FEEDER mode)
• COPIER > ADJUST > ADJ-XY > ADJ-X-MG (Fine-adjustment of optical motor speed)
5) Execute the original stop position and feed speed adjustment at stream reading.
• FEEDER > ADJUST > DOCST (Image reading start position adjustment at ADF
reading)
• FEEDER > ADJUST > LA-SPEED (Original feed speed adjustment)
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