Read LG 42LT75 / 42LT76 (CHASSIS:LD74A) Service Manual online
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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
manufactured at LG TV Plant all over the world
2. Specification
2.1 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
transformer will help to protect test instruments
2.2 Adjustment must be done in the correct sequence.
2.3 The adjustment must be performed at 25±5ºC temperature
2.3 The adjustment must be performed at 25±5ºC temperature
and 65±10% relative humidity if there is no specified
designation.
designation.
2.4 The input voltage of the receiver must be kept between
100~220V, 50/60Hz.
2.5 Before adjustment, execute Heat-Run for 30 minutes at RF
no signal.
3. Channel Memory
1) Press ADJ key in Adjust remocon.
2) Select "Channel Recover" by using
2) Select "Channel Recover" by using
/
(CH+/-) key,
and press
(VOL+).
3) The set is turned off automatically
4) Press ‘power’ key of Adjust Remocon.
4) Press ‘power’ key of Adjust Remocon.
4. EDID
Caution
* Use the proper signal cable for EDID Download
* Use the proper signal cable for EDID Download
- Analog EDID : Pin3 exists
- Digital EDID : Pin3 exists
* Caution: - Never connect HDMI & D-sub Cable at
- Digital EDID : Pin3 exists
* Caution: - Never connect HDMI & D-sub Cable at
the same time.
- Use the proper cables below for EDID
Writing.
- Download HDMI1, HDMI2 separately
because HDMI1 is different from
HDMI2.
HDMI2.
4.1. EDID Data
4.2. Data (Refer to Product specification)
1> ANALOG (128Bytes)
2> HDMI 1(256Bytes)
3> HDMI 2(256Bytes)
Item
Condition
Hex(16) Data
Manufacturer ID
GSM
1E6D
Version
Digital : 1
01
Revision
Digital : 3
03
00
01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F
00 00
FF FF FF FF FF FF 00 1E 6D
10
01 03 01 46 27 78 EA D9 B0 A3 57 49 9C 25
20 11
49 4B A5 6E 00 31 40 45 40 61 40 D1 C0 01 01
30 01
01 01 01 01 01 1B 21 50 A0 51 00 1E 30 48 88
40 35
00 BC 86 21 00 00 1C 26 36 80 A0 70 38 1F 40
50 50
20 85 04 BC 86 21 00 00 18
60
00 00 00 FD
70 00 3C 4B 1D 43 0E 00 0A 20 20 20 20 20 20 00
00
01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F
00 00
FF FF FF FF FF FF 00 1E 6D
10
01 03 80 46 27 78 EA D9 B0 A3 57 49 9C 25
20 11
49 4B A5 6E 00 31 40 45 40 61 40 D1 C0 01 01
30 01
01 01 01 01 01 02 3A 80 18 71 38 2D 40 58 2C
40 45
00 C4 8E 21 00 00 1E 1B 21 50 A0 51 00 1E 30
50 48
88 35 00 BC 86 21 00 00 1C
60
00 00 00 FD
70 00
32 4B 1C 43 0F 00 0A 20 20 20 20 20 20 01
00 02
03 21 F1 4E 02 11 01 03 12 13 04 14 05 21 1F
10 20
22 10 23 09 07 07 83 01 00 00 65 03 0C 00 10
20 00
01 1D 00 BC 52 D0 1E 20 B8 28 55 40 C4 8E 21
30 00
00 1E 01 1D 00 72 51 D0 1E 20 6E 28 55 00 C4
40 8E
21 00 00 1E 01 1D 80 D0 72 1C 16 20 10 2C 25
50 80 C4 8E 21 00 00 9E 8C 0A D0 90 20 40 31 20 0C
60 40
60 40
55 00 C4 8E 21 00 00 18 4E 1F 00 80 51 00 1E
70 30
40 80 37 00 BC 88 21 00 00 18 00 00 00 00
00
01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F
00 00
FF FF FF FF FF FF 00 1E 6D ®Õ ®Œ
10
01 03 80 46 27 78 EA D9 B0 A3 57 49 9C 25
20 11
49 4B A5 6E 00 31 40 45 40 61 40 D1 C0 01 01
30 01
01 01 01 01 01 02 3A 80 18 71 38 2D 40 58 2C
40 45
00 C4 8E 21 00 00 1E 1B 21 50 A0 51 00 1E 30
50 48
88 35 00 BC 86 21 00 00 1C
60
00 00 00 FD
70 00
32 4B 1C 43 0F 00 0A 20 20 20 20 20 20 01
00 02
03 21 F1 4E 02 11 01 03 12 13 04 14 05 21 1F
10 20
22 10 23 09 07 07 83 01 00 00 65 03 0C 00 20
20 00
01 1D 00 BC 52 D0 1E 20 B8 28 55 40 C4 8E 21
30 00
00 1E 01 1D 00 72 51 D0 1E 20 6E 28 55 00 C4
40 8E
21 00 00 1E 01 1D 80 D0 72 1C 16 20 10 2C 25
50 80 C4 8E 21 00 00 9E 8C 0A D0 90 20 40 31 20 0C
60 40
60 40
55 00 C4 8E 21 00 00 18 4E 1F 00 80 51 00 1E
70 30
40 80 37 00 BC 88 21 00 00 18 00 00 00 00
a
a
d
d
d
e-2
e-2
f-1
f-2
d
c
c
c
d
b
b
a
b
d
e-1
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