LG 42PX4DV Service Manual page 11

(3) Vs Adjustment
1) Connect + terminal of D.M.M to Vs pin of P805 and
connect – terminal to GND pin of P805.
2) After turning RV401, adjust voltage of D.M.M as same as
Va voltage which on label of panel right/top. (Deviation;
±0.5V)
Va
P806
GND
NC
VS
P805
DMM
Va ADJ
RV601
+ -
P804
P807
P801
P802
<Fig. 4-2> Connection diagram of power adjustment for measuring
5. EDID
(The Extended Display Idetification Data)
/ DDC
(Display Data Channel)
This is the function that enables "Plug and Play".
5-1. Required Test Equipment
1) PC, Jig for adjusting DDC (PC serial to D-sub.
Connection equipment)
2) DVI to HDMI Connector
5-2. Composition of Device
5-3. EDID DATA
- Download only EDID for HDMI.
00 01 02 03 04 05
00 | 00 FF FF FF FF FF
10 | 23 0E 01 03 80 6E
20 | 0F 4B 52 EF CE 00
30 | 01 01 01 01 01 01
40 | 13 00 4C 6C 42 00
50 | 3E 08 00 00 00 00
60 | 47 20 54 56 0A 20
70 | 00 00 00 00 00 00
80 | 02 03 1A 72 23 09
90 | 83 01 00 00 65 03
A0 | 16 20 58 2C 25 00
B0 | 72 1C 16 20 10 2C
C0 | 00 BC 52 D0 1E 20
D0 | 8C 0A D0 90 20 40
E0 | 00 18 01 1D 00 72
F0 | 21 00 00 1E 00 00
Vs ADJ
V401
P803
Download
PDP
SET
06 07 08 09 0A 0B 0C
FF 00 1E 6D 01 01 01
3E 78 0A 31 30 A5 58
31 CA 01 01 01 01 01
C3 1E 00 20 41 00 20
00 18 00 00 00 FD 00
00 00 00 00 00 00 00
20 20 20 20 20 20 00
00 00 00 00 00 00 00
07 02 47 81 03 05 14
0C 00 10 00 01 1D 80
C4 8E 21 00 00 9E 01
25 80 C4 8E 21 00 00
B8 28 55 40 C4 8E 21
31 20 0C 40 55 00 C4
51 D0 1E 20 6E 28 55
00 00 00 00 00 00 00
6. AD9883A-Set Adjustment
6-1. Synopsis
AD9883A-Set adjustment to set the black level and the Gain
of optimum with an automatic movement from the analog =>
digital converter.
6-2. Test Equipment
Service R/C, MSPG925 Series Pattern Generator
(720P 60Hz 100% Color Bar Pattern output will be possible
and the output level will accurately have to be revised with
0.7±0.1Vp-p)
<Fig. 6> Adjustment Pattern : 720P 60Hz Color Bar Pattern
6-3. Adjustment
(1) Input the color Bar Pattern of the 720P 60Hz Mode what is
supportable to Component or RGB INPUT and the select
the Input Mode as Component2.
(2) After receiving signal for at least 1 second, press the ADJ
Key on the Service R/C to enter the 'Ez - Adjust' and then
select the '1. AD9883A-Set'.
Pressing the Vol + Key to adjust with automatic movement.
(3) If Component adjustment is completed normality,
'Component Adjustment OK' is displayed and if RGB
adjustment is completed normality, 'RGB Adjustment OK' is
displayed. If the adjustment has errors, 'AD9883A-Failed!
Try Again' is displayed.
(4) Readjust after confirming the case Pattern or adjustment
condition where the adjustment errors.
(5) After adjustment is complete, exit the adjustment mode by
pressing the ADJ KEY.
7. Adjustment of White Balance
7-1. Required Equipment
0D 0E 0F
(1) Color analyzer (CA-100 or similar product)
01 01 01
(2) Automatic adjustor (with automatic adjustment hour
3B B8 26
necessity and the RS-232C communication being possible)
01 01 01
(3) AV Pattern Generator
30 10 60
37 4E 1E
FC 00 4C
00 00 01
00 01 57
13 12 04
18 71 1C
1D 80 D0
9E 01 1D
00 00 1E
8E 21 00
00 C4 8E
00 00 50
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