LG 32LG50D (CHASSIS:LT81D) Service Manual ▷ View online
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SPECIFICATION
NOTE : Specifications and others are subject to change without notice for improvement.
3. General Specification
No
Item
Specification
Remark
1.
Video input applicable system
PAL BG
2.
Receivable Broadcasting System
Singapore
- Analog : PAL BG, D/K, I
- Digital : DVB-T
3.
RF Input Channel
[PAL]
Band VHF (E2~E12) UHF (E21~E69)
CATV (S1~S20) HYPER (S21~S47)
[NTSC]
Band V/UHF (2~83) CATV(1~71)
[DVB-T / DMB-T]
Band UHF (21~69)
4.
Input Voltage
100-240V~/50Hz, 60Hz
5. Market
Singapore
6.
Operating Environment
1) Temp : 0 ~ 40 deg
2) Humidity : 10 ~ 90 %RH
7.
Storage Environment
1) Temp : -20 ~ 50 deg
2) Humidity : 10 ~ 90 %RH
8. Power
Consumption
≤ 150
(32”)
9. Stand
by
≤ 1W
10.
Frequency range
H : 31 ~ 61Khz
PC Input
V : 56 ~ 75Hz
11.
Video Input (2EA)
PAL, SECAM, NTSC
12.
S-Video Input (1EA)
PAL, SECAM, NTSC
Side only
13.
Component Input (2EA)
Y/Cb/Cr, Y/ Pb/Pr
14.
RGB Input (1EA)
RGB-PC
15.
HDMI Input (2EA)
HDMI-PC
HDMI-DTV
16.
Audio Input (5 EA)
PC Audio, Component (2EA), AV (2EA)
L/R Input
17.
SPDIF out (1EA)
SPDIF OUT
18.
AV out (1EA)
1. Application range
This specification is applied to LT81D chassis.
2. Requirement for Test
Each part is tested as below without special appointment.
(1) Temperature : 25 ± 5°C(77 ± 9°F), CST : 40 ± 5°C
(2) Humidity : 65% ± 10%
(3) Power : Standard input voltage (100-240V~, 50/60Hz)
(2) Humidity : 65% ± 10%
(3) Power : Standard input voltage (100-240V~, 50/60Hz)
* Standard Voltage of each products is marked by models.
(4) Specification and performance of each parts are followed
each drawing and specification by part number in
accordance with BOM.
accordance with BOM.
(5) The receiver must be operated for about 20 minutes prior
to the adjustment.
3. Test method
(1) Performance : LGE TV test method followed
(2) Demanded other specification
(2) Demanded other specification
Safety : CB Specification
EMC : CISPR 13 specification
EMC : CISPR 13 specification
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4. Component Video Input (Y, P
B
, P
R
)
No.
Resolution
H-freq(kHz)
V-freq(Hz)
Pixel clock(MHz)
Proposed
1.
720*480
15.73
59.94
13.500
SDTV, DVD 480I(525I)
720*480
15.75
60.00
13.514
SDTV, DVD 480I(525I)
2.
720*576
15.625
50.00
13.500
SDTV, DVD 576I(625I)
3. 720*480
31.47
59.94
27.000
SDTV
480P
720*480
31.50
60.00
27.027
SDTV 480P
4. 720*576
31.25
50.00
27.000
SDTV
576P
5. 1280*720
44.96
59.94
74.176
HDTV
720P
1280*720
45.00
60.00
74.250
HDTV 720P
6.
1280*720
37.50
50.00
74.25
HDTV 720P 50Hz
7. 1920*1080
33.72
59.94
74.176
HDTV
1080I
1920*1080
33.75
60.00
74.250
HDTV 1080I
8.
1920*1080
28.125
50.00
74.250
HDTV 1080I 50Hz
9. 1920*1080
67.5
60.00
148.5
HDTV
1080P
10.
1920*1080
56.25
50.00
148.5
HDTV 1080P 50Hz
5. RGB INPUT(PC)
No
Resolution
H-freq.(kHz)
V-freq.(Hz)
Pixel clock(MHz)
Proposed
Remark
1. 720*400
31.468
70.08
28.32
DOS
2. 640*480
31.469
59.94
25.17
VESA(VGA)
3. 640*480
37.500
75.00
31.50
VESA(VGA)
4. 800*600
37.879
60.31
40.00
VESA(SVGA)
5. 800*600
46.875
75.00
49.50
VESA(SVGA)
6. 1024*768
48.363
60.00
65.00
VESA(XGA)
7. 1024*768
56.476
70.06
75.00
VESA(XGA)
8. 1024*768
60.023
75.02
78.75
VESA(XGA)
9. 1280*768
47.776
59.87
79.50
WXGA(50”,60”)
10. 1360*768
47.712
60.01
85.50
WXGA(50”,60”)
11. 1366*768
47.700
60.00
84.62
WXGA(50”,60”)
12.
1280*1024
64.00
60.00
108.00
WUXGA
Only LPL FHD 42” / 47”
13.
1920*1080
66.59
59.93
138.5
WUXGA
Only LPL FHD 42” / 47”
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6. HDMI Input (PC)
No
Resolution
H-freq.(kHz)
V-freq.(Hz)
Pixel clock(MHz)
Proposed
Remark
1. 720*400
31.468
70.08
28.32
DOS
2. 640*480
31.469
59.94
25.17
VESA(VGA)
3. 640*480
37.500
75.00
31.50
VESA(VGA)
4. 800*600
37.879
60.31
40.00
VESA(SVGA)
5. 800*600
46.875
75.00
49.50
VESA(SVGA)
6. 1024*768
48.363
60.00
65.00
VESA(XGA)
7. 1024*768
56.476
70.06
75.00
VESA(XGA)
8. 1024*768
60.023
75.02
78.75
VESA(XGA)
9. 1280*768
47.776
59.87
79.50
WXGA(50”,60”)
10. 1360*768
47.712
60.01
85.50
WXGA(50”,60”)
11. 1366*768
47.700
60.00
84.62
WXGA(50”,60”)
12.
1280*1024
64.00
60.00
108.00
WUXGA
Only LPL FHD 42” / 47”
13.
1920*1080
66.59
59.93
138.5
WUXGA
Only LPL FHD 42” / 47”
6. HDMI Input (DTV)
No
Resolution
H-freq.(kHz)
V-freq.(Hz)
Pixel clock(MHz)
Proposed
Remark
1. 720*480
31.47
59.94
27.000
SDTV
480P
2. 720*480
31.50
60.00
27.027
SDTV
480P
3. 720*576
31.25
50.00
27.000
SDTV
576P
4. 1280*720
44.96
59.94
74.176
HDTV
720P
5. 1280*720
45.00
60.00
74.250
HDTV
720P
6.
1280*720
37.50
50.00
74.25
HDTV 720P 50Hz
7. 1920*1080
33.72
59.94
74.176
HDTV
1080I
8. 1920*1080
33.75
60.00
74.250
HDTV
1080I
9.
1920*1080
28.125
50.00
74.250
HDTV 1080I 50Hz
10. 1920*1080
67.5
60
148.5
HDTV
1080P
11.
1920*1080
56.25
50
148.5
HDTV 1080P 50Hz
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ADJUSTMENT INSTRUCTION
1. Application Range
This spec. sheet is applied to Singapore DTV manufactured at
LG TV Plant all over the world.
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
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
3) The adjustment must be performed at 25±5°C temperature
and 65±10% relative humidity if there is no specified
designation.
designation.
4) The input voltage of the receiver must be kept between
100-220V~, 50/60Hz.
5) Before adjustment, execute Heat-Run for 5 minutes at Full
White mode.(Power on key)
3. ADC Calibration
<Caution>
- System control RS-232 Host should be “PC” for adjustment.
- Press the FRONT-AV key on R/C for converting input mode.
- System control RS-232 Host should be “PC” for adjustment.
- Press the FRONT-AV key on R/C for converting input mode.
(change RS-232 Host:pc, BaudRate:115200bps)
3.1. Adjustment of RF/AV/S-VIDEO
(1) Required Equipments
1) Remote controller for adjustment
2) 802F Pattern Generator, Master (MSPG-925FA), etc.
3) MSPG-925FA Pattern Generator (Which has Video
2) 802F Pattern Generator, Master (MSPG-925FA), etc.
3) MSPG-925FA Pattern Generator (Which has Video
Signal : 100% Color Bar Pattern shown in Fig. 1)
-> Model: 202 / Pattern : 65
(2) Method of Auto RF/AV/S-VIDEO Color Balance.
1) Press the FRONT-AV key on R/C for converting input
mode.
2) Input the Video Signal: 100% Color Bar signal into AV
3) Set the PSM to Vivid mode in the Picture menu.
4) Press ADJ key on R/C for adjustment.
5) Press the
3) Set the PSM to Vivid mode in the Picture menu.
4) Press ADJ key on R/C for adjustment.
5) Press the
G
(Vol. +) key to operate the set, then it
becomes automatically.
6) Auto-RGB OK means the adjustment is completed.
3.2. Adjustment of Component.
(1) Required Equipments
1) Remote controller for adjustment
2) 802F Pattern Generator, Master (MSPG-925FA), etc.
3) MSPG-925FA Pattern Generator(Which has 720p@60Hz
2) 802F Pattern Generator, Master (MSPG-925FA), etc.
3) MSPG-925FA Pattern Generator(Which has 720p@60Hz
YPbPr signal : 100% Color Bar Pattern shown in Fig. 1)
-> Model: 217 / Pattern: 65
4) It is very import to use correct adjustment pattern like Fig.1).
# Within the pattern, color sequence should be aligned
: White-Yellow-Cyan-Green-Gray-Red-BLUE-BLACK
(If color sequence is reversed (Black -> …-> White),
reverse the pattern with REV key, when using Master
pattern generator like MSPG-925)
# If Minimum Black Level and/or Maximum White Level is
not correct, Do select 100% Color Bar Pattern.
: White-Yellow-Cyan-Green-Gray-Red-BLUE-BLACK
(If color sequence is reversed (Black -> …-> White),
reverse the pattern with REV key, when using Master
pattern generator like MSPG-925)
# If Minimum Black Level and/or Maximum White Level is
not correct, Do select 100% Color Bar Pattern.
(2) Method of Auto Component Color Balance
1) Input the Component1 720p 100% Color Bar (MSPG-
925FA model:217, pattern:65) signal into Component.
2) Set the PSM to Vivid mode in the Picture menu.
3) Press the ADJ key on R/C for adjustment.
4) Press the
3) Press the ADJ key on R/C for adjustment.
4) Press the
G
(Vol. +) key to operate the set, then it
becomes automatically.
5) Auto-RGB OK means the adjustment is completed.
3.3. Adjustment of RGB
(1) Required Equipments
1) Remote controller for adjustment
2) 802F Pattern Generator, Master (MSPG-925FA), etc.
3) MSPG-925F Pattern Generator
2) 802F Pattern Generator, Master (MSPG-925FA), etc.
3) MSPG-925F Pattern Generator
(Which has XGA [1024*768] 60Hz PC Format output
signal : 100% Color Bar Pattern shown in Fig. 1).
signal : 100% Color Bar Pattern shown in Fig. 1).
4) It is very import to use correct adjustment pattern like Fig.1.
# Within the pattern, color sequence should be aligned :
White-Yellow-Cyan-Green-Magenta-Red-BLUE-BLACK (If
color sequence is reversed (Black -> …-> White), reverse
the pattern with REV key, when using Master pattern
generator like MSPG-925)
# If Minimum Black Level and/or Maximum White Level is
not correct, Do select 100% Color Bar Pattern.
White-Yellow-Cyan-Green-Magenta-Red-BLUE-BLACK (If
color sequence is reversed (Black -> …-> White), reverse
the pattern with REV key, when using Master pattern
generator like MSPG-925)
# If Minimum Black Level and/or Maximum White Level is
not correct, Do select 100% Color Bar Pattern.
(2) Method of Auto RGB Color Balance
1) Input the PC 1024x768 @ 60Hz with 100% color bar
pattern like Fig.1. into RGB.
(Ex. MSPG-925FA, model:60, pattern:65)
2) Set the PSM to Vivid mode in Picture menu.
3) Press the INSTART key on R/C for adjustment.
4) Press the
3) Press the INSTART key on R/C for adjustment.
4) Press the
G
(Vol. +) key operate To set , then it becomes
automatically.
5) Auto-RGB OK means adjustment is completed.
Cause: Don’t Push “In-stop” key after PCB assembly
adjustment.
ADC
RF/AV/S-VIDEO
Component
RGB-PC
MSPG925FA PAL
Model:217 (720P)
Model: 60
INPUT SELECT AV1
Pattern:65
(1024*768 60Hz)
Model: 202 (PAL-BGDHI) * 100% Color Bar
Pattern: 65
Pattern: 65
*100% Color bar
* 100% Color Bar
<Fig. 1>
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