LG 42PN450D-ZA Service Manual page 8

4. Total Assembly line process
4.1. POWER PCB Assy voltage adjustment
(Vs voltage adjustment)
4.1.1.Test equipment : D.M.M 1EA
4.1.2. Condition for adjustment
- No signal with the snow noise in RF mode
4.1.3. Connection Diagram for Measuring
: refer to fig.7
4.1.4. Adjustment method
4.1.4.1 Vs adjustment
(1) Connect + terminal of D. M..M. to Vs TP, connect -terminal
to GND.
(2) After turning VR901, voltage of D.M.M adjustment as same
as Vs voltage which on label of panel right/top ( deviation
; ±0.5V)
4.1.4.2 Va adjustment
(1) Connect + terminal of D. M..M. to Va TP, connect -terminal
to GND.
(2) After turning VR502, voltage of D.M.M adjustment as same
as Va voltage which on label of panel right/top ( deviation
; ±0.5V)
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Only for training and service purposes
4.2. Adjustment Preparation
● Required Equipment
- Remote controller for adjustment
- Color Analyzer ( CS-1000, CA-100,100+,CA-210 or same
product : CH 11 (PDP)
* Please adjust CA-210, CA-100+ by CS-1000 before measur-
ing
- Auto W/B adjustment instrument(only for Auto adjust-
ment)
- 9 Pin D-Sub Jack(RS232C) is connected to the AUTO
W/B EQUIPMENT.
Before Adjust of White Balance, Please press
POWER ONLY key
- Adjust Process will start by execute RS232C Command.
● Color temperature standards according to CSM and Module
CSM
Cool
Medium
Warm
● CS-1000/CA-100+/CA-210(CH 10) White balance adjust-
ment coordinates and color temperature.
CSM Color Coordination
x
COOL 0.276
MEDIUM 0.285
WARM 0.313
* Connecting picture of the measuring instrument (On Auto-
matic control)
- Inside PATTERN is used when W/B is controlled. Con-
nect to auto controller or push Adjustment R/C POWER-
ON -> Enter the mode of White-Balance, the pattern will
come out.
- 8 -
PLASMA
11000K
9300K
6500K
Temp ± Color
Coordination
y
0.283 11000K 0.002
0.293 9300K 0.002
0.329 6500K 0.002
LGE Internal Use Only