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Part 3: Adjustment
3-1
1. ADJUSTMENT
1.1 Adjustments after Parts Replacement
Contrast Adjustment
R-Contrast adjustment
G-Contrast adjustment
B-Contrast adjustment
Integrator lens adjustment
Relay lens-out adjustment
Fan control adjustment
Clamp adjustment
Sub gain adjustment
Video center adjustment
PSIG adjustment
Black reference adjustment
Common center adjustment
Gamma adjustment
White balance adjustment
White uniformity adjustment
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❍
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Integrator
Lens (OUT)
Polarized glass
R
G
B
Optical Adjustments
Electr
ical Adjustments
Disassembly / Replaced Parts
LCD/Prism
Ass'y
Relay
Lens (OUT)
Power
Board
Main Board
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: Adjustment necessary
❍
: Check necessary
Memory IC replacement
IC1801 on the main board stores the data for the service adjustments, and
should not be replaced except for the case of defective device.
If replaced, the re-adjustments are required following to the “Electrical
Adjustments”.
The data of lamp replacement counter is stored in the IC1801.
Please note that the lamp replace counter will be reset when the memory IC
(IC1801) is replaced.
(Lamp replace counter cannot be set to the previous value.)
Caution to memory IC replacement
When IC1801 is replaced with new one, the CPU writes down the default data of
the service adjustments to the replaced IC as the mentioned on the service
adjustment table. As these data are not the same data as factory shipped data,
it should be required to perform the re-adjustments following to the “Electrical
Adjustments”.
Please note that in this case the lamp replace counter will be reset.
Caution of Main Board replacement (in the case Ic1801 is not defective)
When the main board is replaced, IC1801 should be replaced with the one on
previous main board. After replacement, it should be required to perform the re-
adjustments following to the “Electrical Adjustments”.
In this case, the lamp replace counter can be kept the value as before.
CAUTION
Summary of Contents for D78-5452
Page 9: ...Part 1 General Information ...
Page 25: ...Part 2 Repair Information ...
Page 43: ...Part 3 Adjustment ...
Page 66: ...Part 4 Troubleshooting ...
Page 78: ...Part 4 Troubleshooting 4 12 AN5870 RGB SYNC SW IC1201 IC5201 BA7078 Sync Separator IC5341 ...
Page 80: ...Part 4 Troubleshooting 4 14 CXD3536 LCD Driver IC401 FA5502 P F Control IC621 ...
Page 81: ...Part 4 Troubleshooting 4 15 M62392 M62393 D A IC6271 IC281 ML60851 USB Driver IC9801 ...
Page 83: ...Part 4 Troubleshooting 4 17 TC90A69F Y C Separator IC2101 ...
Page 84: ...Part 5 Parts Catalog ...
Page 85: ......
Page 99: ...Part 6 Electrical Diagrams ...