Canon NP6512 Service Manual page 51

4) Place a newspaper on the copyboard, and close the copyboard cover.
5) Turn VR102 so that the reading in the display is 'A3' through 'Ad'.
6) Remove the newspaper from the copyboard, and place five sheets of copy paper on the
copyboard glass in its place; then, close the copyboard cover.
7) Turn VR103 on the DC controller PCB so that the reading on the control panel is '52' through
'5c'.
8) Repeat steps 4) through 7) so that the values of both VR102 and VR103 are target values.
Caution:
If you cannot set VR102 and VR103 to the target values at the same time, turn VR103 fully
counterclockwise, and go back to step 4) and make adjustments once again.
CHAPTER 2 STANDARDS AND ADJUSTMENTS
VR102
AE GAIN
J130
AE
VR102
REF
J103
J104
Figure 2-63
VR103
AE GAIN
J130
AE
VR102
REF
J103 J104
Figure 2-64
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