LG 32LT75/76, Service Manual

Page: 10 / 33

LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes - 10 -
ADJUSTMENT INSTRUCTION
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
D
/
E
(CH+/-) key, and
press G (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.
4.1. EDID Data
4.2. Data
(1) ANALOG (128 bytes)
(2) HDMI 1 (256 bytes)=>
=> Detail EDID Options are below (a, b, c, d, e-1, e-2, f-1, f-2)
(3) HDMI 2 (256 bytes)
=> 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 : ‘2006’ -> ‘10’
ⓓ Model Name(Hex):
ⓔ -1, ⓔ -2, ⓕ -1, ⓕ -2 Checksum: Changeable by total
EDID data.
Item
Manufacurer ID
Version
Revision
Condition
GSM
Digital : 1
Digital : 3
Data(Hex)
1E6D
01
03
D-sub to D-sub DVI-D to HDMI or HDMI ro HDMI
For HDMI EDID
0x00 0x01 0x02 0x03 0x04 0x05 0x06 0x07 0x08 0x09 0x0A 0x0B 0x0C 0x0D 0x0E 0x0F
0x00 00 FF FF FF FF FF FF 00 1E 6D ⓐ ⓑ
0x01
ⓒ
01 03 01 46 27 78 EA D9 B0 A3 57 49 9C 25
0x02 11 49 4B A5 6E 00 31 40 45 40 61 40 D1 C0 01 01
0x03 01 01 01 01 01 01 1B 21 50 A0 51 00 1E 30 48 88
0x04 35 00 BC 86 21 00 00 1C 26 36 80 A0 70 38 1F 40
0x05 50 20 85 04 BC 86 21 00 00 18 ⓓ
0x06 ⓓ 00 00 00 FD
0x07 00 3C 4B 1D 43 0E 00 0A 20 20 20 20 20 20 00 ⓔ -1
For Analog EDID
0x00 0x01 0x02 0x03 0x04 0x05 0x06 0x07 0x08 0x09 0x0A 0x0B 0x0C 0x0D 0x0E 0x0F
0x00 00 FF FF FF FF FF FF 00 1E 6D
ⓐ ⓑ
0x01
ⓒ
01 03 80 46 27 78 EA D9 B0 A3 57 49 9C 25
0x02 11 49 4B A5 6E 00 31 40 45 40 61 40 D1 C0 01 01
0x03 01 01 01 01 01 01 02 3A 80 18 71 38 2D 40 58 2C
0x04 45 00 C4 8E 21 00 00 1E 1B 21 50 A0 51 00 1E 30
0x05 48 88 35 00 BC 86 21 00 00 1C ⓓ
0x06 ⓓ 00 00 00 FD
0x07 00 32 4B 1C 43 0F 00 0A 20 20 20 20 20 20 01 ⓔ -2
0x00 02 03 21 F1 4E 02 11 01 03 12 13 04 14 05 21 1F
0x01 20 22 10 23 09 07 07 83 01 00 00 65 3 0C 00 10
0x02 00 01 1D 00 BC 52 D0 1E 20 B8 28 55 40 C4 8E 21
0x03 00 00 1E 01 1D 00 72 51 D0 1E 20 6E 28 55 00 C4
0x04 8E 21 00 00 1E 01 1D 80 D0 72 1C 16 20 10 2C 25
0x05 80 C4 8E 21 00 00 9E 8C 0A D0 90 20 40 31 20 0C
0x06 40 55 00 C4 8E 21 00 00 18 4E 1F 00 80 51 00 1E
0x07 30 40 80 37 00 BC 88 21 00 00 18 00 00 00 00 ⓕ -1
0x00 0x01 0x02 0x03 0x04 0x05 0x06 0x07 0x08 0x09 0x0A 0x0B 0x0C 0x0D 0x0E 0x0F
0x00 0 FF FF FF FF FF FF 0 1E 6D ⓐ ⓑ
0x01 ⓒ 1 3 80 46 27 78 EA D9 B0 A3 57 49 9C 25
0x02 11 49 4B A5 6E 0 31 40 45 40 61 40 D1 C0 1 1
0x03 1 1 1 1 1 1 2 3A 80 18 71 38 2D 40 58 2C
0x04 45 0 C4 8E 21 0 0 1E 1B 21 50 A0 51 0 1E 30
0x05 48 88 35 0 BC 86 21 0 0 1C ⓓ
0x06 ⓓ 0 0 0 FD
0x07 0 32 4B 1C 43 0F 0 0A 20 20 20 20 20 20 1 ⓔ -2
0x00 2 3 21 F1 4E 2 11 1 3 12 13 4 14 5 21 1F
0x01 20 22 10 23 9 7 7 83 1 0 0 65 3 0C 0 10
0x02 0 1 1D 0 BC 52 D0 1E 20 B8 28 55 40 C4 8E 21
0x03 0 0 1E 1 1D 0 72 51 D0 1E 20 6E 28 55 0 C4
0x04 8E 21 0 0 1E 1 1D 80 D0 72 1C 16 20 10 2C 25
0x05 80 C4 8E 21 0 0 9E 8C 0A D0 90 20 40 31 20 0C
0x06 40 55 0 C4 8E 21 0 0 18 4E 1F 0 80 51 0 1E
0x07 30 40 80 37 0 BC 88 21 0 0 18 0 0 0 0 ⓕ -2