8.5.2. Preparation
1. Remove the connector cover and grounding metal (3)
according to the steps 1 through 4 in the section 7.3.
"Removal of A-P.C.Board".
2. Unscrew the 2 screws.
3. Connect the service kit (extension cables).
·
Each flexible cable of LCD Panels (R/G/B) - Connectors
(A1/A2/A3) on A-P.C.Board
·
Power fan connector - Connector (A16) on A-P.C.Board
·
Exhaust fan connector - Connector (A17) on A-
P.C.Board
·
PBS fan connector - Connector (A19) on A-P.C.Board
4. Covering with an insulator (cloth or the like) to prevent a
short circuit, set the A-P.C.Board block on the main unit.
Note:
·
Handle with care not to apply external force to
connecting parts which connect the main unit and A-
8.5.3.2. G Reflector Adjustment
1. Turn on the power and display 100 % white pattern on the
screen.
P.C.Board.
8.5.3. Adjustment Procedure
8.5.3.1. Outline
When the lighting area is off from the adjustment and color
unevenness appears, adjust the lighting area into correct
position.
Symptom Measure
Magenta unevenness G Reflector Adjustment
Cyan unevenness R Reflector Adjustment
Yellow unevenness B Reflector Adjustment
·
Shifting the mirror adjusting lever horizontally, adjust color
unevenness on the screen upper/lower sides.
·
Twisting the mirror adjusting lever, adjust color unevenness
on the screen right/left sides.
2. Loosen the 2 screws fixing the mirror adjusting lever A just
until the lever can be shifted.
3. Adjust the mirror adjusting lever A position to minimize color
unevenness on the screen by shifting the lever in arrow
26
PT-LB20NTU / PT-LB20NTE / PT-LB20NTEA / PT-LB20U / PT-LB20E / PT-LB20EA / PT-LB20SU / PT-LB20SE / PT-LB20SEA / PT-LB20VU / PT-LB20VE / PT-LB20VEA
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