TX-43P15X, TX-43P15H, TX-43P15HQ, TX-43P15HZ, TX-51P15X, TX-51P15H, TX-51P15HQ, TX-51P15HZ (serv.man2) - Panasonic TV Service Manual (repair manual). Page 20

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- 20 -
Cutoff Adjustment
Instrument
White Balance meter
Signal Generator : Black Pattern
Preparation
Should be performed after 1 hour of aging.
In dark room.
Focus Optical Lens has been adjusted.
Set controls as following.
Picture Menu : 
Dynamic Normal
Bright : 
40
Colour Temperature : 
Standard
D.PNR : 
OFF
P.AI : 
OFF
Adjust Screen VR (R,B) to min. (Fully Counterclockwise).
Set a Flood of WB METER on Screen Center.
Procedure
1.
Adjust Green Screen VR so that the Brightness value of
WB METER is to 2.5±0.2 [cd/m
2
]
.
2.
Adjust BRIGHT Control in PICTURE Menu to 32.
3.
Adjust Red Screen VR so that R/G value is Center
(100±2%).
And Adjust Blue Screen VR so that B/G value is to Cen-
ter (100±2%).
4.
Remove the Flood.
Blue Peek-Limit Adjustment
Instrument
White Balance meter
Window pattern generator
Preparation
1. Connect an oscilloscope to TPLB1
2. Apply Window Pattern
3. Picture menu : DYNAMIC NORMAL. AI : OFF, PNR : OFF
4. White Peek effect : off
5. Set the Sub-Contrast and Blue-Drive DAC to MAX
Adjustment
1. Adjust B-LIMIT so that A is 25±1V
2. Set the Sub-Contrast and Blue-Drive DAC to Original
Data.
Blue focus Adjustment
Instrument
White Balance meter
Window pattern generator (W.P.G)
 ) #**"+",-./)+, /#0101
23$ 4"5
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( $ 4 ;&++ $ 8
1
Set the Sub-Contrast and Blue-Drive DAC to MAX
< 8 5 8 ; #
Adjustment
1. Adjust Blue focus VR so that Brightness is Minimum.
2. Adjust Blue focus VR Clockwise so that Brightness Value
is 30±1[cd/m
2
] higher than the Brightness Value Adjust-
ment in ITEM1).
3. Set the Sub-Contrast and Blue-Drive DAC to Original
Data.
4"5
TARGET
X,Y
COLOR TEMP
MPCD
X : 0.301
7400±500K
±5
Y : 0.313
±5
H
GND
A=25±1V
Blue ONLY
(15cm x 15cm)
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