42PG60UD-DA (CHASSIS:PT81A) - LG TV Service Manual (repair manual). Page 8

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9. POWER PCB Assy Voltage
Adjustments 
(Va, Vs Voltage adjustments)
9-1. Test Equipment :
D.M.M. 1EA
9-2.Connection Diagram for Measuring
: refer to Fig.1
9-3. Adjustment Method
(1) Va Adjustment
1) After receiving 100% Full White Pattern, HEAT RUN.
2) Connect + terminal of D.M.M to Va pin of P811, connect
- terminal to GND pin of P811.
3) After turning VR901, voltage of D.M.M adjustment as
same as Va voltage which on label of panel right/top.
(Deviation; ±0.5V)
(2) Vs Adjustment
1) Input signal : RF noise signal.
2) Connect + terminal of D.M.M to Vs pin of P811, connect
– terminal to GND pin of P811.
3) After turning VR951, voltage of D.M.M adjustment as
same as Va voltage which on label of panel right/top.
(Deviation; ±0.5V)
10. Adjustment of White Balance
10-1. Required Equipment
(1) Color Analyzer : CA-1000, CA-100+(CH.10) CA-210(CH.10).
* Please adjust CA-100+/CA-210 by CS-1000 before
measuring.
-> You should use Channel 10 which is Matrix
compensated(White, Red, Green, Blue revised) by CS-
1000 and adjust in accordance with balance adjustment
coordinate.
Color temperature standards according to CSM and Module.
Change target luminance and range of the Auto adjustment
W/B equipment.
White balance adjustment coordinate and color temperature.
* PC(for communication through RS-232C)
-> UART Baud rate : 115200 bps
Each PCB assembly must be checked by check JIG set.
(Because power PCB Assembly damages to PDP Module,
especially be careful)
(Fig.1) Connection diagram of power adjustment for measuring
* Press the POWER ON KEY on R/C before Model name download.
Befor adjusting White-balance, the AV ADC should be done.
If ADC status were “NG”, Need to ADC adjustment.
PLASMA
Remark
11000K
9300K
6500K
Cool
Normal
Warm
CSM
65
20
Range
Target luminance
0.276
0.283
0.000
0.276±0.002
0.283±0.002
0.000
0.276±0.002
0.283±0.002
0.000
X
y
uv
Cool
CS-1000
CA-100+(CH.10) CA-210(CH.10)
0.285
0.293
0.000
0.285±0.002
0.293±0.002
0.000
0.285±0.002
0.293±0.002
0.000
X
y
uv
Medium
CS-1000
CA-100+(CH.10) CA-210(CH.10)
0.313
0.329
0.003
0.313±0.002
0.329±0.002
0.003
0.313±0.002
0.329±0.002
0.003
X
y
uv
Warm
CS-1000
CA-100+(CH.10) CA-210(CH.10)
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