Part 3: Adjustment
3-19
3. OPTICAL ADJUSTMENTS
Remove the cabinet top and main board according to "Mechanical Disassembles"
before starting the following optical adjustments.
Adjustment requires a 2.0mm hex wrench and a slot screwdriver.
3.1 Contrast Adjustment
[Before adjustment]
Input a 100% of black raster signal.
[R/G/B-contrast adjustment]
1. Loosen a screw
A
(Fig.3-15/3-16) on the polarized glass
mounting base which you intend to adjust.
2. Adjust slot as shown in Fig.3-15 to obtain the darkest
brightness on the screen by turning a slot
screwdriver.
3. Tighten the screw
A
to fix the polarized glass
mounting base.
Repeat steps 1 to 3 for remaining polarized glasses.
Do not disconnect the connectors K8L, K8X, K8D, K8G and K8E on the
main board, otherwise the projector cannot be turned on.
CAUTION
Fig. 3-15
Fig. 3-16
Polarized glass
mounting base
A
B-Polarized glass
mounting base
R-Polarized glass
mounting base
G-Polarized glass
mounting base
A
A
A
Main Board
Summary of Contents for LV-7545U
Page 2: ...CANON Power Projector LV 7545E D78 5231 SERVICE SMANUAL ...
Page 9: ......
Page 10: ...Part 1 General Information ...
Page 24: ......
Page 25: ...Part 2 Repair Information ...
Page 46: ...Part 3 Adjustment ...
Page 69: ...Part 4 Troubleshooting ...
Page 86: ...Part 4 Troubleshooting 4 17 BH3540 Volume Control IC1652 CXA2101AQ RGB Matrix IC4101 ...
Page 90: ...Part 4 Troubleshooting 4 21 LB1645 Motor Drive IC1601 LC863316 SUB CPU IC1851 ...
Page 91: ...Part 4 Troubleshooting 4 22 ML60851 USB I F IC9801 M62393 D A IC212 IC2381 ...
Page 93: ...Part 4 Troubleshooting 4 24 SII161ACT DVI I F IC8001 STR Z2156 Power Switching IC651 ...
Page 94: ...Part 4 Troubleshooting 4 25 TA1287 RGB YUV Converter IC4551 TB1274AF Video Decoder IC1101 ...
Page 95: ...Part 4 Troubleshooting 4 26 TDA7056 Audio Output IC1631 IC1632 ...
Page 96: ...Part 5 Parts Catalog ...
Page 97: ......
Page 113: ...Part 6 Electrical Diagrams ...
Page 130: ......