50PG70FD-AB (CHASSIS:PA81C) - LG TV Service Manual (repair manual). Page 8

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(4) 50” Vs Adjustment(refer Fig. 2)
1) Connect + terminal of D.M.M to Vs pin of P811, connect –
terminal to GND pin of P811.
2) After turning VR951, voltage of D.M.M adjustment as same
as Va voltage which on label of panel right/top. (Deviation;
±0.5V)
(5) 42” Va Adjustment(refer Fig. 3)
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)
(6) 42” Vs Adjustment(refer Fig. 3)
1) Connect + terminal of D.M.M to Vs pin of P811, connect –
terminal to GND pin of P811.
2) After turning VR951, voltage of D.M.M adjustment as same
as Va voltage which on label of panel right/top. (Deviation;
±0.5V)
(7) 50” Va Adjustment (refer Fig. 4)
1)  After receiving 100% Full White Pattern, HEAT RUN.
2)  Connect + terminal of D. M..M. to Va pin of P816, connect
-terminal to GND pin of P816.
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)
(8) 50” Vs Adjustment (refer fig. 4)
1)  Connect + terminal of D. M..M. to Vs pin of P816, connect
-terminal to GND pin of P816.
2)  After turning VR951, voltage of D.M.M adjustment as same
as Vs voltage which on label of panel right/top  (deviation ;
±0.5V)
(9) 60” Va Adjustment (refer Fig. 5)
1)  After receiving 100% Full White Pattern, HEAT RUN.
2)  Connect + terminal of D. M..M. to Va pin of P816, connect
-terminal to GND pin of P816.
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)
(10) 60” Vs Adjustment (refer Fig. 5)
1)  Connect + terminal of D. M..M. to Vs pin of P816, connect
-terminal to GND pin of P816.
2)  After turning VR951, voltage of D.M.M adjustment as same
as Vs voltage which on label of panel right/top  (deviation;
±0.5V)
- 8 -
(Fig. 2)  50inch Power PCB Assy Voltage Adjustment
(Fig. 4)  50inch Full HD Power PCB Assy Voltage adjustment
(Fig. 5)  60inch Full HD Power PCB Assy Voltage Adjustment
(Fig. 3)  42inch Power PCB Assy Voltage Adjustment
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