6-16
XEROX DFC165 & DWC165c Service Manual
6.3.3 Checking the Lens Focus
1) Check that the VIDEO signal for areas "A" on the jig is at its maximum amplitude
(see figure 6-11)
Fig. 6-11
2) If it is not, loosen the two screws and move the lens to the desired position (see
figure 6-12); then fix the screws in position with a drop of glue.
Fig. 6-12
CH1
200mV
A
100
µ
s
1.02 V
EXT2
CH2
5V
"A"
↑
↓
V = max
RS
VIDEO
lens screws
