Part 3: Adjustment
3-15
3. OPTICAL ADJUSTMENTS
Before taking optical adjustments below, remove the Cabinet Top following to the
“Mechanical Disassemblies”.
Adjustments require a 2.0mm hex wrench and a slot screwdriver. When you adjust
Integrator lens or Relay lens adjustment, you need to disconnect FPC cables of LCD
panels on the main board.
Optical adjustment requires a 2.0mm hex wrench and a slot screwdriver.
3.1 Contrast Adjustment
[Before adjustment]
Input a 100% of black raster signal.
1. Loosen a screw
A
(Fig.3-11/3-12) on the polarized
glass mounting base which you intend to adjust.
2. Turn the polarized glass mounting base as shown in
Fig.3-11 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.
Do not disconnect connectors on the main board, because the projector
cannot turn on due to operate the power failure protection.
CAUTION
Fig. 3-12
Polarized glass
mounting base
A
Fig. 3-11
R-Polarized Glass
Mounting Base
B-Polarized Glass
Mounting Base
G-Polarized Glass
Mounting Base
A
A
A
Main Board
Slot B
Summary of Contents for D78-5532
Page 2: ...CANON Multimedia Projector LV X4U D78 5532 LV X4E D78 5533 SERVICE SMANUAL ...
Page 9: ...Part 1 General Information ...
Page 26: ...Part 2 Repair Information ...
Page 43: ...Part 3 Adjustment ...
Page 62: ...Part 4 Troubleshooting ...
Page 79: ...Part 4 Troubleshooting 4 17 AN5870SB RGB SYNC SW IC5201 LM4889 Audio Amplifier IC5031 ...
Page 81: ...Part 4 Troubleshooting 4 19 FA5502 P F Control IC621 VPC3230D Video Decoder IC101 ...
Page 84: ...Part 4 Troubleshooting 4 22 TA1370FG Sync Separator Frequency Counter IC5302 ...
Page 85: ...Part 5 Parts Catalog ...
Page 86: ......
Page 94: ......
Page 100: ...Part 6 Electrical Diagrams ...