![background image](http://html.mh-extra.com/html/canon/lv-s4/lv-s4_service-manual_62552023.webp)
-23-
G-Polarized Glass
Mounting Base
R-Polarized Glass
Mounting Base
B-Polarized Glass
Mounting Base
A
A
A
Fig.1-
2
■
Optical Adjustments
Main Board
Before taking optical adjustments below, remove the Cabinet Top and Main Board following to the “Mechanical
Disassemblies”
Adjustments require a plus screwdriver, 2.0mm hex wrench and a slot screwdriver.
Note: Do not disconnect connectors
K8A
,
K8B
,
K8H
,
K48K
,
K48L
,
K66A
,
K66B
,
K66C
,
K66D
,
K66E
and
K66F
on the main board, because the projector can not turn on due to operate the power failure protection.
Fig.1-
1
Polarized
glass
mounting base
A
[Before Adjustment]
- Input a 100% of black raster signal.
[R/G/B-CONTRAST ADJUSTMENT]
1
Loosen a screw
A
(
Fig.1-1/1-2
) on the polarized glass mounting
base which you intend to adjust.
2
Turn the polarized glass mounting base as shown in
Fig.1-1
to
obtain the darkest brightness on the screen.
3
Tighten the screw
A
to fix the polarized glass mounting base.
Repeat steps 1 to 3 for remaining polarized glasses.
Contrast adjustment
* Following information differs from the model LV-S3 ;
- the top view on page 23 - 25
Summary of Contents for LV-S4
Page 1: ...Multimedia Projector SERVICE MANUAL Original Version FILE NO Model No LV S4 ...
Page 49: ... 49 BA9743AFV DC DC Converter IC371 IC Block Diagrams BA7078AF Sync Detector IC5301 ...
Page 50: ... 50 IC Block Diagrams LM4865 Audio Amplifier IC5003 PW168A Scaler Main CPU IC301 ...
Page 52: ...SERVICE MANUAL LV S4U LV S4E ...