Canon imageRUNNER ADVANCE 4551i Service Manual page 682

COPIER > ADJUST > CCD
DFTBK-BW 1
Detail
Use Case
Adj/Set/Operate Method
Caution
Display/Adj/Set Range
Default Value
Related Service Mode
Amount of Change per
Unit
■ LASER
COPIER > ADJUST > LASER
PVE-OFST 1
Detail
Use Case
Adj/Set/Operate Method
Caution
Display/Adj/Set Range
Unit
Default Value
Amount of Change per
Unit
LA-OFF 1
Detail
Use Case
Adj/Set/Operate Method
Caution
Display/Adj/Set Range
Default Value
Shading target VL (B&W) entry: back
To enter the B&W shading target value of the Scanner Unit (for back side) at stream reading.
When replacing the Reader Controller PCB, enter the value of service label.
When replacing the Copyboard Glass/Scanner Unit (for back side), execute DF-WLVL3 and DF-
WLVL4 and write the value which is automatically set in the service label.
The setting of this item is enabled only when the DADF (1-path model) is installed.
- When replacing the Reader Controller PCB/clearing RAM data
- When replacing the Copyboard Glass/Scanner Unit (for back side)
1) Enter the setting value, and then press OK key.
2) Turn OFF/ON the main power switch.
When the Copyboard or DADF (reverse model) is installed, the setting of this item is disabled.
700 to 1400
1126
COPIER> FUNCTION> CCD> DF-WLVL3/4
1
Adj of write start position of laser
To adjust the image position by changing the laser emitting position.
As the value is incremented by 1, the image moves by 0.01 mm.
+: Toward rear
-: Toward front
When replacing the DC Controller PCB/clearing RAM data, enter the value of service label.
After the setting value is changed, write the changed value in the service label.
When adjusting image position
Use this only when replacing the DC Controller PCB/Laser Scanner Unit.
Enter the setting value (switch negative/positive by -/+ key) and press OK key.
After the setting value is changed, write the changed value in the service label.
-512 to 511
mm
0
0.01
Trailing edge OFF adjustment for laser
Trailing edge OFF timing adjustment for the laser in the case of free size paper
As the value is incremented by 1, the OFF timing for laser becomes late.
Use this only when replacing the DC Controller PCB/Laser Scanner Unit.
Enter the setting value, and then press OK key.
After the setting value is changed, write the changed value in the service label.
-128 to 127
0
669
8. Service Mode