Canon imageRUNNER 2525 Series Service Manual page 265

● #SCAN> READER> DISPLAY> CCD> TARGET-G
Target value of shading for green
If the scanned image has some failure, check the target value of shading for green.
If the machine continues to display 0 (minimum) or FFFF (maximum), there may be some problem on main controller PCB.
Appropriate guideline :1 to 2047
● #SCAN> READER> DISPLAY> CCD> TARGET-R
Target value of shading for red
If the scanned image has some failure, check the target value of shading for red.
If the machine continues to display 0 (minimum) or FFFF (maximum), there may be some problem on main controller PCB.
Appropriate guideline :1 to 2047
● #SCAN> READER> DISPLAY> CCD> OFST
Adjustment value of offset level on CCD/CIS
To judge if this adjustment value is correct when an image fault attributed to CCD occurs.
Appropriate guideline :0 to 255
● #SCAN> READER> DISPLAY> CCD> GAIN
Adjustment value of gain level on CCD/CIS
To judge if this adjustment value is correct when an image fault attributed to CCD/CIS occurs.
Appropriate guideline :0 to 255
● #SCAN> READER> I/O> R-CON> P001
The P001 port indication of the reader relay PCB
Display the I/O state of the sensor of the reader unit.
Bit
Bit0 Copyboard cover open/closed sensor (rear) (S32)
Bit1 CCD HP sensor (S31)
Bit2 Not used.
Bit3 Copyboard cover open/closed sensor (front) (S33)
Bit4 Document size snsor 0 (S34)
Bit5 Document size snsor 1 (S35)
Bit6 Document size snsor 2 (S36)
Bit7 Document size snsor 3 (S37)
Bit8-15 Not used.
● #SCAN> READER> I/O> FEEDER> P001
The P001 port indication of the ADF driver PCB
Display the I/O state of the sensor of the ADF unit.
Bit
Bit0 Document tray width sensor 2 (PI2)
Bit1 Document tray width sensor 1 (PI1)
Bit2 Not used.
Bit3 Not used.
Bit4 Delivery reversal sensor (PI6)
Bit5 Read sensor (PI7)
Bit6 Not used.
Bit7 Registration sensor (PI8)
Bit8 Document length sensor 2 (PI5)
Bit9 Document length sensor 1 (PI4)
Bit10 Not used.
Bit11 Cover open/closed sensor (PI10)
Bit12 Last document detection sensor (PI3)
Bit13 Document set sensor (PI11)
Name
Name
1: Document present
1: Document present
1: Document present
0: Document present
0: Document present
1: Document present
1: Document present
1: Open
1: Document present
1: Document present
Display contents
1: Open
1: HP
1: Open
1: Document present
1: Document present
1: Document present
1: Document present
1: Document present
Display contents
255
8. Service Mode
Remarks
ADF open angle: 5 degrees
ADF open angle: 25 degrees
Remarks