LG 42LF75 / 42LF76 (CHASSIS:LD75B) Service Manual ▷ View online
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7. Component Video Input (Y, P
B
, P
R
)
8. RGB PC INPUT Mode Table
No
Resolution
H-freq(kHz)
V-freq.(Hz)
Pixel clock(MHz)
Proposed
1.
720x480
15.73
59.94
SDTV, DVD 480i
2.
720x480
15.75
60.00
SDTV, DVD 480i
3. 720x480
31.47
59.94
SDTV
480p
4. 720x480
31.50
60.00
SDTV
480p
5.
720x576
15.625
50.00
SDTV, DVD 576i
6. 720x576
31.25
50.00
SDTV
576p
7. 1280x720
44.96
59.94
HDTV
720p
8. 1280x720
45.00
60.00
HDTV
720p
9. 1280x720
37.50
50.00
HDTV
720p
10. 1920x1080
28.125
50.00
HDTV
1080i
11. 1920x1080
33.75
60.00
HDTV
1080i
12. 1920x1080
33.72
59.94
HDTV
1080i
13.
1920x1080
67.50
60.00
HDTV 1080p
37/42LF75 ONLY
No
Resolution
H-freq(kHz)
V-freq.(Hz)
Pixel clock(MHz)
Proposed
1.
720x400
31.468
70.08
28.321
2.
640x480
31.469
59.94
25.17
VESA
37.500
75.00
31.50
3.
800x600
37.879
60.31
40.00
VESA
46.875
75.00
49.50
4.
832x624
49.725
74.55
57.283
5.
1024x768
48.363
60.00
65.00
VESA(XGA)
56.476
70.00
75.00
60.023
75.03
78.75
6.
1280x768
47.693
59.99
80.125
VESA(WXGA)
7.
1360x768
47.649
59.94
84.625
VESA(WXGA)
8.
1366x768
47.649
59.94
84.625
Supported
9.
1280x1024
63.595
60.00
108.875
SXGA (37/42LF75 ONLY)
10.
1400x1050
65.150
60.00
122.50
SXGA (37/42LF75 ONLY)
11.
1920x1080
66.647
59.988
138.625
WUXGA
- 10 -
9. HDMI DTV Table
No
Resolution
H-freq(kHz)
V-freq.(Hz)
Pixel clock(MHz)
Remark
Proposed
1.
640x480
31.469
59.94
25.175
SDTV 480p 60Hz
PC mode =>
2.
640x480
31.469
60.00
25.20
SDTV 480p 60Hz
Display
3.
720x480
31.47
59.94
27.00
SDTV 480p 60Hz
640x480
4.
720x480
31.50
60.00
27.027
SDTV 480p 60Hz
5.
720x576
31.25
50.00
27.000
SDTV 576p 50Hz
6.
1280x720
37.50
50.00
74.176
HDTV 720p 50Hz
HDCP
7.
1280x720
44.96
59.94
74.176
HDTV 720p 60Hz
HDCP
8.
1280x720
45.00
60.00
74.250
HDTV 720p 60Hz
HDCP
9.
1920x1080
28.125
50.00
74.250
HDTV 1080i 50Hz
HDCP
10.
1920x1080
33.72
59.94
74.176
HDTV 1080i 60Hz
HDCP
11.
1920x1080
33.75
60.00
74.250
HDTV 1080i 60Hz
HDCP
12.
1920x1080
27.000
24.00
74.250
HDTV 1080P 24Hz
HDCP
13.
1920x1080
56.250
50.00
148.500
HDTV 1080P 50Hz
HDCP
14.
1920x1080
67.433
59.94
148.352
HDTV 1080P 60Hz
HDCP
15.
1920x1080
67.500
60.00
148.500
HDTV 1080P 60Hz
HDCP
10. HDMI PC Table
No.
Resolution
H-freq(kHz)
V-freq.(Hz)
Pixel clock(MHz)
Proposed
1.
720x400
31.468
70.08
28.32
2.
640x480
31.469
59.94
25.17
VESA
37.500
75.00
31.50
3.
800x600
37.879
60.31
40.00
VESA
46.875
75.00
49.50
4.
832x624
49.725
74.55
57.283
Macintosh
5.
1024x768
48.363
60.00
65.00
VESA(XGA)
56.476
70.00
75.00
60.023
75.03
78.75
6.
1280x768
47.693
59.99
80.125
VESA(WXGA)
7.
1360x768
47.649
59.94
84.625
VESA(WXGA)
8.
1366x768
47.649
59.94
84.625
Supported
9.
1280x1024
63.595
60.0
108.875
SXGA (37/42LF75 ONLY)
10.
1400x1050
65.160
60.0
122.50
SXGA (37/42LF75 ONLY)
11.
1600x1200
74.077
60.0
130.375
UXGA (37/42LF75 ONLY)
12.
1920x1080
66.647
59.988
138.625
WUXGA
- 11 -
11. Mechanical specification-37LF75
No. Item
Content
Unit
Remark
1. Product
Widt(W) Length(D) Height(H) mm
Dimension
Before Packing
929
301.9
709.1
mm
With Stant
After Packing
1015
277
895
mm
2.
Product
Only SET
21.8
Kg
With BOX
26.3
Kg
12. Mechanical specification-42LF75
No. Item
Content
Unit
Remark
1. Product
Widt(W) Length(D) Height(H) mm
Dimension
Before Packing
1030.8
333.2
779.8
mm
With Stant
After Packing
1118
382
836
mm
2.
Product
Only SET
26.8
Kg
With BOX
32.9
Kg
- 12 -
ADJUSTMENT INSTRUCTION
1. Application Range
This spec. sheet is applied to all of the LD75B 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
3.1 Channel memory method
1) Press ADJ key in Adjust remocon.
2) Select "System Control 3" by using
2) Select "System Control 3" by using
/
(CH+/-) key, and
press
(ENTER)
3) Select "Channel Recover" by using
/
(CH+/-) key, and
press
(VOL+).
4) When Channel Recover is completed, set will be turned
off and LED light go to stand-by mode.
4. EDID
* When do Set Assembly, EDID data must scan in DDC
line.
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.
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 81 80 90 40
30 D1 C0 01 01 01 01 1A 36 80 A0 70 38 1F 40 30 20
40 35
40 35
00 E8 26 32 00 00 1A DA 2F 78 E0 51 1A 25 40
50 58
98 14 00 E8 26 32 00 00 1A 00 00 00 FD 00 39
60 4B 1F 54 12 00 0A 20 20 20 20 20 20
70
70
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
01 01 01 01
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 81 80 90 40
30 A9
40 D1 C0 01 01 1A 36 80 A0 70 38 1F 40 30 20
40 35
00 E8 26 32 00 00 1A 1B 21 50 A0 51 00 1E 30
50 48
88 35 00 BC 86 21 00 00 1C 00 00 00 FD 00 39
60 4B 1F 54 12 00 0A 20 20 20 20 20 20
70
70
01
80 02
03 21 F1 4E 81 02 03 15 12 13 04 14 05 20 21
90 22
1F 10 23 09 07 07 83 01 00 00 65 03 0C 00
A0 00
01 1D 00 80 51 D0 1C 20 40 80 35 00 BC 88 21
B0 00
00 1E 8C 0A D0 8A 20 E0 2D 10 10 3E 96 00 13
C0 8E
21 00 00 18
2
3A 80 18 71 38 2D 40 58 2C 45
D0 00
06 44 21 00 00 1E 01 1D 80 18 71 1C 16 20 58
E0 2C 25 00 C4 8E 21 00 00 9E 4E 1F 00 80 51 00 1E
F0 30
F0 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
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 81 80 90 40
30 A9
40 D1 C0 01 01 1A 36 80 A0 70 38 1F 40 30 20
40 35
00 E8 26 32 00 00 1A 1B 21 50 A0 51 00 1E 30
50 48
88 35 00 BC 86 21 00 00 1C 00 00 00 FD 00 39
60 4B 1F 54 12 00 0A 20 20 20 20 20 20
70
70
01
80 02
03 21 F1 4E 81 02 03 15 12 13 04 14 05 20 21
90 22
1F 10 23 09 07 07 83 01 00 00 65 03 0C 00
A0 00
01 1D 00 80 51 D0 1C 20 40 80 35 00 BC 88 21
B0 00
00 1E 8C 0A D0 8A 20 E0 2D 10 10 3E 96 00 13
C0 8E
21 00 00 18 02 3A 80 18 71 38 2D 40 58 2C 45
D0 00
06 44 21 00 00 1E 01 1D 80 18 71 1C 16 20 58
E0 2C 25 00 C4 8E 21 00 00 9E 4E 1F 00 80 51 00 1E
F0 30
F0 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-1
10
10
d
c
c
c
d
b
a
b
d
e-1
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