Canon CiRC2550, Service Manual

Page: 636 / 774

Chapter 17
17-33
F-17-15
F-17-16
2. CCD
T-17-26
COPIER>ADJUST>CCD
Sub item Description level.
W-PLT-X/Y/Z Use it when entering the white label data indicated on the standard white plate.
Method of Adjustment
- if you have initialized the RAM on the reader controller PCB or replaced the reader controller PCB, enter the value
indicated on the service label.
- if you have replaced the copyboard glass, enter the value indicated on the copyboard glass. (See the figure below)
Range of Adjustment: 1 to 9999
[Factory default/After RAM clear: W-PLT-X=8244: W-PLT-Y=8707: W-PLT-Z=9383]
Attention:
If you have changed the setting, be sure to record the new setting on the service label.
1
CCDU-RG Use it to enter the offset value for color displacement caused by the CIS.
Method of adjustment
Enter the offset value for the following:
- if you have replaced the CIS unit, enter the value indicated on the label attached to the CIS unit. (In addition, be sure
to record the value on the service label.)
In the case of the following, enter the value indicated on the service label:
- if you have replaced the reader controller PCB.
- if you have initialized the RAM on the reader controller PCB.
Range of adjustment -150 to 150
[at time of shipment: factory measurement/after RAM initialization: 0]
1
Original
Scanning lamp
Decrease the setting
(so that the read start
position moves toward
the leading edge).
Increase the setting
(so that the read start
position moves toward
the trailing edge).
CIS Unit
Document
Read start position
Vertical size plate
Decreasing setting value
(read start position moves
away from you)
Increasing setting value
(read start position
moves toward you)