Adjustment Instruction - LG 32LT75/76 Service Manual

1. Application Range
This spec. sheet is applied to all of the LD74A chassis
manufactured at LG TV Plant all over the world.
2. Specification.
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 to
protect test instruments
2) Adjustment must be done in the correct sequence.
3) The adjustment must be performed at 25±5°C temperature
and 65±10% relative humidity if there is no specified
designation.
4) The input voltage of the receiver must be kept between
100-220V~, 50/60Hz.
5) Before adjustment, execute Heat-Run for 30 minutes at RF
no signal.
3. Channel Memory
1) Press ADJ key in Adjust remote control.
2) Select "Channel Recover" by using
G
press (VOL+).
3) The set is turned off automatically.
4) Press 'power' key of Adjust Remote control.
4. EDID
* Caution
1) Use the proper signal cable for EDID Download
- Analog EDID : Pin3 exists
- Digital EDID : Pin3 exists
2) Never connect HDMI & D-sub Cable at the same time.
3) Use the proper cables below for EDID Writing.
4) Download HDMI1, HDMI2 separately because HDMI1 is
different from HDMI2.
For Analog EDID
D-sub to D-sub
4.1. EDID Data
Item
Manufacurer ID
Version
Revision
Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes

ADJUSTMENT INSTRUCTION

D / E (CH+/-) key, and
For HDMI EDID
DVI-D to HDMI or HDMI ro HDMI
Condition Data(Hex)
GSM 1E6D
Digital : 1 01
Digital : 3 03
4.2. Data
(1) ANALOG (128 bytes)
0x00 0x01 0x02 0x03 0x04 0x05 0x06 0x07 0x08 0x09 0x0A 0x0B 0x0C 0x0D 0x0E 0x0F
0x00 00 FF FF FF FF
0x01 01 03 01
0x02 11 49 4B A5 6E
0x03 01 01 01 01 01
0x04 35 00 BC 86 21
0x05 50 20 85 04 BC
0x06
0x07 00 3C 4B 1D 43
(2) HDMI 1 (256 bytes)=>
0x00 0x01 0x02 0x03 0x04 0x05 0x06 0x07 0x08 0x09 0x0A 0x0B 0x0C 0x0D 0x0E 0x0F
0x00 00 FF FF FF FF
0x01 01 03 80
0x02 11 49 4B A5 6E
0x03 01 01 01 01 01
0x04 45 00 C4 8E 21
0x05 48 88 35 00 BC
0x06
0x07 00 32 4B 1C 43
0x00 02 03 21 F1 4E
0x01 20 22 10 23 09
0x02 00 01 1D 00 BC
0x03 00 00 1E 01 1D
0x04 8E 21 00 00 1E
0x05 80 C4 8E 21 00
0x06 40 55 00 C4 8E
0x07 30 40 80 37 00
=> Detail EDID Options are below (a, b, c, d, e-1, e-2, f-1, f-2)
(3) HDMI 2 (256 bytes)
0x00 0x01 0x02 0x03 0x04 0x05 0x06 0x07 0x08 0x09 0x0A 0x0B 0x0C 0x0D 0x0E 0x0F
0x00 0 FF FF FF FF
0x01 1 3 80
0x02 11 49 4B A5 6E
0x03 1 1 1 1 1
0x04 45 0 C4 8E 21
0x05 48 88 35 0 BC
0x06
0x07 0 32 4B 1C 43
0x00 2 3 21 F1 4E
0x01 20 22 10 23 9
0x02 0 1 1D 0 BC
0x03 0 0 1E 1 1D
0x04 8E 21 0 0 1E
0x05 80 C4 8E 21 0
0x06 40 55 0 C4 8E
0x07 30 40 80 37 0
=> Detail EDID Options are below (a, b, c, d, e-1, e-2, f-1, f-2)
Product ID
Serial No: Controlled on production line.
Month, Year: Controlled on production line:
ex) Monthly : '09' -> '09'
Year
Model Name(Hex):
-1, -2, -1,
EDID data.
- 10 -
FF FF 00 1E 6D
46 27 78 EA D9 B0 A3
00 31 40 45 40 61 40
01 1B 21 50 A0 51 00
00 00 1C 26 36 80 A0
86 21 00 00 18
0E 00 0A 20 20 20 20
FF FF 00 1E 6D
46 27 78 EA D9 B0 A3
00 31 40 45 40 61 40
01 02 3A 80 18 71 38
00 00 1E 1B 21 50 A0
86 21 00 00 1C
0F 00 0A 20 20 20 20
02 11 01 03 12 13 04
07 07 83 01 00 00 65
52 D0 1E 20 B8 28 55
00 72 51 D0 1E 20 6E
01 1D 80 D0 72 1C 16
00 9E 8C 0A D0 90 20
21 00 00 18 4E 1F 00
BC 88 21 00 00 18 00
FF FF 0 1E 6D
46 27 78 EA D9 B0 A3
0 31 40 45 40 61 40
1 2 3A 80 18 71 38
0 0 1E 1B 21 50 A0
86 21 0 0 1C
0F 0 0A 20 20 20 20
2 11 1 3 12 13 4
7 7 83 1 0 0 65
52 D0 1E 20 B8 28 55
0 72 51 D0 1E 20 6E
1 1D 80 D0 72 1C 16
0 9E 8C 0A D0 90 20
21 0 0 18 4E 1F 0
BC 88 21 0 0 18 0
: '2006' -> '10'
-2 Checksum: Changeable by total
LGE Internal Use Only
57 49 9C 25
D1 C0 01 01
1E 30 48 88
70 38 1F 40
00 00 00 FD
20 20 00 -1
57 49 9C 25
D1 C0 01 01
2D 40 58 2C
51 00 1E 30
00 00 00 FD
20 20 01 -2
14 05 21 1F
3 0C 00 10
40 C4 8E 21
28 55 00 C4
20 10 2C 25
40 31 20 0C
80 51 00 1E
00 00 00 -1
57 49 9C 25
D1 C0 1 1
2D 40 58 2C
51 0 1E 30
0 0 0 FD
20 20 1 -2
14 5 21 1F
3 0C 0 10
40 C4 8E 21
28 55 0 C4
20 10 2C 25
40 31 20 0C
80 51 0 1E
0 0 0 -2