LG MU-42PM12X, Руководство по обслуживанию

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5. POWER PCB Assy Voltage
Adjustments
(Va, Vs Voltage Adjustments)
5-1. Test Equipment :
D.M.M. 1EA
5-2. Connection Diagram for Measuring
Refer to (Fig 9).
5-3. Adjustment Method for
P/No. 3501V00182A/B B/D
(1) Va Adjustment
1) After receiving 100% Full White Pattern, HEAT RUN.
2) C terminal of D.M.M to Va pin of P805, connect
- terminal to GND pin of P805.
3) Turn RV601, to adjust the Va voltage to match the value
marked on the label on the right/top of the panel.
(Deviation; ±0.5V)
(2) Vs Adjustment
1) C 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)
5-4. Adjustment Method for
P/No. 3501V00187A B/D
(1) Va Adjustment
1) After receiving 100% Full White Pattern, HEAT RUN.
2) C terminal of D.M.M to Va pin of P805, connect
- terminal to GND pin of P805.
3) Turn RV501, to adjust the Va voltage to match the value
marked on the label on the right/top of the panel.
(Deviation; ±0.5V)
(2) Vs Adjustment
1) C 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)
6. DDC Data Input
6-1. Required Test Equipment
(1) A jig for adjusting PC, DDC (PC serial to D-sub
Connection equipment)
(2) S/W for writing DDC (EDID Data Write & Read)
(3) D-sub 15P Cable, D-Sub to DVI Connector (Connect to
DVI Jack)
6-2. Setting of Device
6-3. Preparation for Adjustment
(1) Set devices as above and turn the PC and jig on.
(2) Put S/W for writing DDC (EDID data Write & Read) into
operation. (operated in DOS mode.)
ADJUSTMENT INSTRUCTIONS
Each PCB assembly must be checked by Check JIG Set
before assembly. (Take special note of the Power PCB, which
can easily damage the PDP module)
(Fig. 9-1) Connection Diagram of Power Adjustment for
Measuring(3501V00182A/B)
(Fig. 9-2) Connection Diagram of Power Adjustment for
Measuring(3501V00187A)
(Fig. 10)
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