Canon iR C6800 Series Service Manual page 1136

Chapter 15
15.4.1.4.6 <REG V M>
Method of adjustment
Range of adjustment
Reference
15.4.1.4.7 <REG2 V M>
Method of adjustment
Range of adjustment
Reference
15-72
T-15-57
Use it to make rough adjustment of the write start position in main scanning
direction for M.
a higher setting will move the pattern toward the trailing edge.
if you have initialized the RAM on the DC controller PCB or replaced the DC
controller PCB, enter the value indicated on the service label.
10 to 10 (unit: pixel)
at time of shipment: factory measurement value
upon RAM initialization: 0
This item is for use at the factory only, and must NOT be used in the field.
T-15-58
Use it to make rough adjustment of the write start position in sub scanning
direction for M (2nd side in 2 sheet placement).
a higher setting will move the pattern toward the trailing edge.
if you have initialized the RAM on the DC controller PCB or replaced the
DC controller, enter the value indicated on the service label.
10 to 10 (unit: pixel)
at time of shipment: factory measurement/RAM initialization: 0
This item is for use at the factory only, and must NOT be used in the field.
0005-6714
0005-6715