Canon Color imageRUNNER C4580, Service Manual

Page: 684 / 851

Chapter 19
19-39
19.3 ADJUST (Adjustment Mode)
19.3.1 COPIER
19.3.1.1 COPIER Table
1. ADJ-XY
Adjust the scanner image leading edge position
T-19-28
COPIER>ADJUST>ADJ-XY
Sub item Description level.
ADJ-X Use it to adjust the scanner image leading edge position (i.e., image read start position in sub scanning
direction).
Method of adjustment
- if the non-image width is larger than indicated, decrease the setting.
- if an area outside the original is copied, increase the setting.
- an increase by '1' will move the image read start position toward the trailing edge by 0.1 mm (i.e.,
move the image read area toward the trailing edge).
- if you have initialized the RAM of the reader controller PCB or replaced the reader controller PCB,
enter the value indicated on the service label.
Range of Adjustment 1 to 100 [Factory default/After RAM clear: 20]
Attention
If you have changed the setting, be sure to record the new setting on the service label.
1
ADJ-Y Use it to adjust the read start cell position of the CCD (i.e., image read start position in main scanning
direction).
Method of Adjustment
- if the non-image width is larger than indicated, decrease the setting.
- if an area outside the original is copied, increase the setting.
- an increase by '1' will move the image read start position toward the front by 0.1 mm (i.e., move the
image read area toward the front).
- 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.
Range of Adjustment 47 to 131 [Factory default/After RAM clear: 90]
Attention
If you have changed the setting, be sure to record the new setting on the service label.
1
ADJ-S Use it when entering the adjustment value for the scanner shading measurement position.
Method of Adjustment
- a decrease by '1' will move the shading measurement position toward the leading edge by 0.1 mm.
- 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.
Range of Adjustment 40 to 60 [Factory default/After RAM clear: 50]
Attention
If you have changed the setting, be sure to record the new setting on the service label.
1
ADJ-Y-DF Use it to adjust the main scanning points for DF SRAM reading mode.
Method of Adjustment
- an increase by '1' will move the image read start position to the front by 0.1 mm.
- 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.
Range of Adjustment 21 to 106 [Factory default/After RAM clear: 53]
Attention
If you have changed the setting, be sure to record the new setting on the service label.
1