LG 71PY1M Service Manual page 12

(2) Vs Adjustment
1) Connect + terminal of D.M.M to Vs pin of P805, connect
– terminal to GND pin of P805.
2) Turn RV401, to adjust the Vs voltage to match the value
marked on the label on the right/top of the panel.
(Deviation; ±0.5V)
(3) 5V Voltage Adjustment
1) Connect + terminal of D.M.M to 5V Vcc pin of P804,
connect – terminal of D.M.M to GND pin of P804 on the
left PSU.
Turn RV601, to adjust the voltage value of D.M.M to be
5.3V. (Deviation; ±0.05V)
2) Connect + terminal of D.M.M to 5V Vcc pin of P804,
connect – terminal of D.M.M to GND pin of P804 on the
right PSU.
Turn RV601, to adjust the voltage value of D.M.M to be
5.3V. (Deviation; ±0.05V)
3) Connect + terminal of D.M.M to 5V Vcc pin of P804,
connect – terminal of D.M.M to GND pin of P804 on the
left PSU.
Turn RV601, to adjust the voltage value of D.M.M to be
5.6V. (Deviation; ±0.05V)
4) Connect + terminal of D.M.M to 5V Vcc pin of P804,
connect – terminal of D.M.M to GND pin of P804 on the
right PSU.
Turn RV601, to adjust the voltage value of D.M.M to be
5.6V. (Deviation; ±0.05V)
* Caution 1) Because there are two units in PSU, one of
them fixes to 5.3V voltage and then the other
adjusts to 5.3V voltage. After adjusting 5.3V
voltage with each other, one of them and the
other adjust to 5.6V voltage accordingly.
* Caution 2) Make small adjustments. Great differences
can cause the unit to shutdown
(Fig. 4) Connection Diagram for measuring Power Adjustments
5. Adjustment of COLOR
5-1. Required Equipment
Pattern Generator(VG-828), MSPG3240A
5-2. Adjustment Pattern
5-3. Adjustment Method of Main HD Comp
(1) Input 1080i Pattern(Fig. 5) at the Component 1 input
(2) Press ADJ KEY on the S R/C.
(3) Press Vol. + KEY and operate To SET.
(4) Auto-RGB OK means completed adjustment.
5-4. Adjustment Method of Sub HD Comp
(1) Input 1080i Pattern(Fig. 5) at the Component 1 input
(2) Press ADJ KEY on the S R/C.
(3) Press Vol. + KEY and operate To SET.
(4) Auto-RGB OK means completed adjustment.
.
5-5. Adjustment of Main RGB Color Balance
(1) Input 1280*1024,60Hz Pattern(Fig. 5) at the RGB input
(2) Press ADJ KEY on the S R/C.
(3) Press Vol. + KEY and operate To SET.
(4) Auto-RGB OK means completed adjustment.
5-6. Adjustment of Sub RGB Color Balance
(1) Input 1280*1024,60Hz Pattern(Fig. 5) at the RGB input
(2) Press ADJ KEY on the S R/C.
(3) Press Vol. + KEY and operate To SET.
(4) Auto-RGB OK means completed adjustment.
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(Fig. 5)
Color Balance
terminal using PC Pattern Generator.
Color Balance
terminal using PC Pattern Generator.
terminal using PC Pattern Generator.
terminal using PC Pattern Generator.