Adjustment Instructions - LG 42PC3DH Service Manual

1. Application Object
These instructions are applied to all of the PDP TV, PA-51D.
2. Notes
(1) Because this is not a hot chassis, it is not necessary to use
an isolation transformer. However, the use of isolation
transformer will help protect test equipment.
(2) Adjustments must be done in the correct order.
(3) The adjustments must be performed in the circumstance of
25±5°C of temperature and 65±10% of relative humidity if
there is no specific designation.
(4) The input voltage of the receiver be must kept 110V, 60Hz
when adjusting.
(5) The receiver must be operational for about 15 minutes
prior to the adjustments.
1) After receiving 100% white pattern, the receiver must be
operated prior to adjustment. (Or 8. White Pattern
condition in EZ - Adjust)
2) Enter into White Pattern
- Press POWER ON Key on the Service Remote
Control (S R/C)
- Enter the Ez - Adjust by pressing ADJ Key on the
Service Remote Control (S R/C).
- Select the 7. White Pattern using CH +/- Key and
press the Enter(Y) Key.
Display the 100% Full White Pattern.
[ Set is activated HEAT-RUN without signal generator in
this mode.
If you turn on a still screen more than 20 minutes (Especially
Digital pattern(13 CH), Cross Hatch Pattern), an afterimage
may occur in the black level part of the screen.
3. EPLD Download
PC
<Fig. 1> Connection Diagram of EPLD Download
(1) Test Equipment: PC, Jig for download
(2) Connect the power of VSC B/D.
(3) Execute download program(iMPACK) of PC.
(4) After executing the hot key on the Programmer, click icon
(5) End after confirming

ADJUSTMENT INSTRUCTIONS

VSC
B/D
Each PCB Assy must be checked by Check JIG Set before
assembly. (Especially, be careful Power PCB Assy which can
cause Damage to the PDP Module.)
4. POWER PCB Assy Voltage
Adjustment
4-1. Test Equipment :
4-2. Connection Diagram for Measuring
Refer to <Fig. 2>.
<Fig. 2> Connection Diagram of Power Adjustment for
Measuring (Power Board)
4-3. Adjustment
(1) Va Adjustment
1) Connect + terminal of D.M.M to Va pin of P805 and
connect – terminal to GND pin of P805.
2) Adjust RV601 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 P805 and
connect – terminal to GND pin of P805.
2) Adjust RV401 voltage to match that of the label on the
Top/Right of the panel. (Deviation : ±0.5V)
- 9 -
(Va, Vs Voltage Adjustment)
D.M.M 1EA