Canon imageRUNNER ADVANCE 4551i Service Manual page 628

■ CCD
COPIER > DISPLAY > CCD
TARGET-B 2
Detail
Use Case
Adj/Set/Operate Method
Display/Adj/Set Range
Appropriate Target Value
TARGET-G 2
Detail
Use Case
Adj/Set/Operate Method
Display/Adj/Set Range
Appropriate Target Value
TARGET-R 2
Detail
Use Case
Adj/Set/Operate Method
Display/Adj/Set Range
Appropriate Target Value
GAIN-OB 2
Detail
Use Case
Adj/Set/Operate Method
Display/Adj/Set Range
Appropriate Target Value
Shading target value (B)
To display the shading target value of Blue.
Continuous display of 0 (minimum) or 65535 (maximum) is considered a failure of the Reader
Controller PCB.
When the value is out of the target value range, image failure or E302 (shading error) may have
occurred. Identify the cause according to the value.
- When replacing the Reader Controller PCB
- At scanned image failure
N/A (Display only)
0 to 65535
512 - 2047
Shading target value (G)
To display the target value of Green.
Continuous display of 0 (minimum) or 65535 (maximum) is considered a failure of the Reader
Controller PCB.
When the value is out of the target value range, image failure or E302 (shading error) may have
occurred. Identify the cause according to the value.
- When replacing the Reader Controller PCB
- At scanned image failure
N/A (Display only)
0 to 65535
512 - 2047
Shading target value (R)
To display the shading target value of Red.
Continuous display of 0 (minimum) or 65535 (maximum) is considered a failure of the Reader
Controller PCB.
When the value is out of the target value range, image failure or E302 (shading error) may have
occurred. Identify the cause according to the value.
- When replacing the Reader Controller PCB
- At scanned image failure
N/A (Display only)
0 to 65535
512 - 2047
Gain level of Read Sensor odd bit(B):frt
To display the Blue gain level adjustment value in odd-numbered bit on the Reading Sensor of
Scanner Unit (for front side).
Continuous display of upper limit is considered a failure of the Scanner Unit/Reader Controller
PCB.
When the value is out of the target value range, image failure or E302 (shading error) may have
occurred. Identify the cause according to the value.
- When replacing the Reader Controller PCB
- At scanned image failure
N/A (Display only)
0 to 65535
0 - 143
615
8. Service Mode