Canon imageRUNNER ADVANCE 4551i Service Manual page 658

COPIER > ADJUST > CCD
DFTAR-R 1
Detail
Use Case
Adj/Set/Operate Method
Display/Adj/Set Range
Default Value
Related Service Mode
Amount of Change per
Unit
DFTAR-G 1
Detail
Use Case
Adj/Set/Operate Method
Display/Adj/Set Range
Default Value
Related Service Mode
Amount of Change per
Unit
DFTAR-B 1
Detail
Use Case
Adj/Set/Operate Method
Display/Adj/Set Range
Default Value
Related Service Mode
Amount of Change per
Unit
Shading target VL (R) entry: front side
To enter the shading target value of Red of the Scanner Unit (for front side) at stream reading.
When replacing the Reader Controller PCB, enter the value of service label.
When replacing the Copyboard Glass/Scanner Unit (for front side), execute DF-WLVL1 and DF-
WLVL2 and write the value which is automatically set in the service label.
The setting is applied to the image on the front side when the DADF (1-path model) is installed,
whereas it is applied to the images on both the front and back sides when the DADF (reverse
model) is installed.
- When replacing the Reader Controller PCB/clearing RAM data
- When replacing the Copyboard Glass/Scanner Unit (for front side)
1) Enter the setting value, and then press OK key.
2) Turn OFF/ON the main power switch.
1 to 2047
1159
COPIER> FUNCTION> CCD> DF-WLVL1/2
1
Shading target VL (G) entry: front side
To enter the shading target value of Green of the Scanner Unit (for front side) at stream reading.
When replacing the Reader Controller PCB, enter the value of service label.
When replacing the Copyboard Glass/Scanner Unit (for front side), execute DF-WLVL1 and DF-
WLVL2 and write the value which is automatically set in the service label.
The setting is applied to the image on the front side when the DADF (1-path model) is installed,
whereas it is applied to the images on both the front and back sides when the DADF (reverse
model) is installed.
- When replacing the Reader Controller PCB/clearing RAM data
- When replacing the Copyboard Glass/Scanner Unit (for front side)
1) Enter the setting value, and then press OK key.
2) Turn OFF/ON the main power switch.
1 to 2047
1189
COPIER> FUNCTION> CCD> DF-WLVL1/2
1
Shading target VL (B) entry: front side
To enter the shading target value of Blue of the Scanner Unit (for front side) at stream reading.
When replacing the Reader Controller PCB, enter the value of service label.
When replacing the Copyboard Glass/Scanner Unit (for front side), execute DF-WLVL1 and DF-
WLVL2 and write the value which is automatically set in the service label.
The setting is applied to the image on the front side when the DADF (1-path model) is installed,
whereas it is applied to the images on both the front and back sides when the DADF (reverse
model) is installed.
- When replacing the Reader Controller PCB/clearing RAM data
- When replacing the Copyboard Glass/Scanner Unit (for front side)
1) Enter the setting value, and then press OK key.
2) Turn OFF/ON the main power switch.
1 to 2047
1209
COPIER> FUNCTION> CCD> DF-WLVL1/2
1
645
8. Service Mode