Canon D78-5311, Service Manual

Page: 60 / 122

3.2 Condenser Lens Adjustment
1. Turn the projector on by a state of without
FPC cables.
2. Project only green light on the screen.
3. Adjust the adjustment base of condenser
lens assy to make color uniformity in green.
1) If the shading appears on the left or right
of the screen as shown in
Fig. 3-10
,
loosen 2 screws
A
with the 2.0mm hex
driver, and adjust the slot
B
to make
color uniformity in green by using a slot
screwdriver.
2) If the shading appears on the top or
bottom of the screen as shown in
Fig. 3-11
, loosen 2 screw
C
with the
2.0mm hex driver, and adjust the slot
D
to make color uniformity in green by
using a slot screwdriver.
4. Tighten screws
A
and
C
to fix the Condenser
lens unit.
Part 3: Adjustment
3-17
y
x
Slot D
C
a b
a
b
Moving of slot B
Moving of Slot D
Slot B
A
C
y
x
Green
Green
A
Fig. 3-10
Fig. 3-11
The relay lens adjustment
must be carried out after
completing this adjustment.
CAUTION