LG 50PC5DC Service Manual page 13

5-5. Adjustment(LG IT: EAY32957901)
(1) Va Adjustment
1) Connect + terminal of D.M.M to Va pin of P812 and
connect – terminal to GND pin of P812.
2) Adjust VR951 voltage to match that of the label on the
Top/Right of the panel. (Deviation : ±0.5V)
(2) Vs Adjustment
1) Connect + terminal of D.M.M to Vs pin of P812 and
connect – terminal to GND pin of P812.
2) Adjust VR901 voltage to match that of the label on the
Top/Right of the panel. (Deviation : ±0.5V)
<Fig. 1-4> 50" PSU(LG IT: EAY32957901)
ADJUSTMENT INSTRUCTIONS
6. ADC-Set Adjustment
6-1. Synopsis
ADC-Set adjustment to set the black level and the Gain to
optimum.
6-2. Test Equipment
Service R/C, 801GF(802V, 802F, 802R) or MSPG925FA
Pattern Generator
(480i/1080i The Horizontal 100% Color Bar Pattern adjust to
within 0.7±0.1Vp-p)
[ADC adjustment (MSPG-925Fx series) Model No. & Pattern No.]
- Model No.: #209(480i adjustment), #223(1080i adjustment)
- Pattern No.: #65(7ColorBar Pattern)
<Fig. 2> Adjustment Mode
<Fig. 3> Adjustment Pattern: 480i/1080i 60Hz HozTV31Bar
Pattern