DOWNLOAD LG 37LG50 (CHASSIS:LA84A) Service Manual ↓ Size: 4.28 MB | Pages: 29 in PDF or view online for FREE

Model
37LG50 (CHASSIS:LA84A)
Pages
29
Size
4.28 MB
Type
PDF
Document
Service Manual
Brand
Device
TV / LCD
File
37lg50-chassis-la84a.pdf
Date

LG 37LG50 (CHASSIS:LA84A) Service Manual ▷ View online

- 9 -
6.  Component Video Input  (Y, P
B
, P
R
)  
No.
Specification 
Remark
Resolution H-freq(kHz) 
V-freq(Hz) 
Pixek 
clock
1. 
720*480
15.73
60
13.5135
SDTV ,DVD 480I
2. 
720*480
15.73
59.94
13.5
SDTV ,DVD 480I
3. 720*480
31.47
60
27.027
SDTV 
480P
4. 720*480
31.47
59.94
27.0
SDTV 
480P
5. 1280*720
45.00
60.00
74.25
HDTV 
720P
6. 1280*720
44.96
59.94
74.176
HDTV 
720P
7. 1920*1080
33.75
60.00
74.25
HDTV 
1080I
8. 1920*1080
33.72
59.94
74.176
HDTV 
1080I
9. 1920*1080
67.500
60
148.50
HDTV 
1080P
10. 1920*1080
67.432
59.939
148.352
HDTV 
1080P
11. 1920*1080
27.000
24.000
74.25
HDTV 
1080P
12. 1920*1080
26.97
23.94
74.176
HDTV 
1080P
13. 1920*1080
33.75
30.000
74.25
HDTV 
1080P
14. 1920*1080
33.71
29.97
74.176
HDTV 
1080P 
7.  RGB PC 
No. Resolution  H-freq(kHz)  V-freq(Hz) 
 
Pixel 
clock(MHz)
Remark 
PC
DDC
1. 640*350
31.468
70.09
25.17
EGA
X
2. 720*400
31.469
70.08
28.32
DOS 
O
3. 640*480
31.469
59.94
25.17
VESA(VGA)
O
4. 640*480
37.861
72.80
31.50
VESA(VGA)
O
5. 640*480
37.500
75.00
31.50
VESA(VGA)
O
6. 800*600
35.156
56.25
36.00
VESA(SVGA)
O
7. 800*600
37.879
60.31
40.00
VESA(SVGA)
O
8. 800*600
48.077
72.18
50.00
VESA(SVGA)
O
9. 800*600
46.875
75.00
49.50
VESA(SVGA)
O
10. 1024*768
48.363
60.00
65.00
VESA(XGA)
O
11. 1024*768
56.476
70.06
75.00
VESA(XGA)
O
12. 1024*768
60.023
75.02
78.75
VESA(XGA)
O
13. 1280*768
47.776
59.870
79.5
CVT(WXGA)
O
14. 1280*768
60.289
74.893
102.25
CVT(WXGA)
O
15. 
1360*768
47.712
60.015
85.50
VESA (WXGA)       
O
16. 1280*1024
63.981
60.020
108.00
VESA 
(SXGA)
O
17. 1280*1024
79.976
75.025
135
VESA 
(SXGA)
O
18. 1600*1200
75.00
60.00
162
VESA 
(UXGA)
O
19
1920*1080
67.5
60
138.5
HDTV 1080P
O
- 10 -
8. HDMI Input (PC/DTV)
No. Resolution  H-freq(kHz)  V-freq(Hz) 
 
Pixel 
clock(MHz)
Remark 
PC
DDC
1
640*350
31.468
70.09
25.17
EGA
X
2
720*400
31.469
70.08
28.32
DOS
O
3
640*480
31.469
59.94
25.17
VESA(VGA)
O
4
640*480
37.861
72.80
31.50
VESA(VGA)
O
5
640*480
37.500
75.00
31.50
VESA(VGA)
O
6
800*600
35.156
56.25
36.00
VESA(SVGA)
O
7
800*600
37.879
60.31
40.00
VESA(SVGA)
O
8
800*600
48.077
72.18
50.00
VESA(SVGA)
O
9
800*600
46.875
75.00
49.50
VESA(SVGA)
O
10
1024*768
48.363
60.00
65.00
VESA(XGA)
O
11
1024*768
56.476
70.06
75.00
VESA(XGA)
O
12
1024*768
60.023
75.02
78.75
VESA(XGA)
O
13
1280*768
47.776
59.870
79.5
CVT(WXGA)
O
14
1360*768
47.712
60.015
85.50
VESA (WXGA)       
O
15
1280*1024
63.981
60.020
108.00
VESA (SXGA)
O
16
1280*1024
79.976
75.025
135
VESA (SXGA)
O
17
1600*1200
75.00
60.00
162
VESA (UXGA)
O
18
1920*1080
67.5
60
148.5
HDTV 1080P
O
DTV
1
720*480
31.47
60
27.027
SDTV 480P
2
720*480
31.47
59.94
27.00
SDTV 480P
3
1280*720
45.00
60.00
74.25
HDTV 720P
4
1280*720
44.96
59.94
74.176
HDTV 720P
5
1920*1080
33.75
60.00
74.14
HDTV 1080I
6
1920*1080
33.72
59.94
74.176
HDTV 1080I
7
1920*1080
67.500
60
148.50
HDTV 1080P
8
1920*1080
67.432
59.939
148.352
HDTV 1080P
9
1920*1080
27.000
24.000
74.25
HDTV 1080P
10
1920*1080
26.97
23.94
74.176
HDTV 1080P
11
1920*1080
33.75
30.000
74.25
HDTV 1080P
12
1920*1080
33.71
29.97
74.176
HDTV 1080P
- 11 -
9. Mechanical specification  
10-1. 52LG50   
No. Item 
Content 
Unit 
Remark 
1. Product 
Widt(W) 
Length(D)  Height(H)  mm 
 
Dimension
Before Packing
1291.7
342.9
892.2 
mm
With Stant
After Packing
1386
411
976 
mm 
2. 
Product 
Only SET 
39.5
Kg  
With BOX 
TBD
Kg  
10-2. 47LG50     
No. Item 
Content 
Unit 
Remark 
1. Product 
Widt(W) 
Length(D)  Height(H)  mm 
 
Dimension
Before Packing
mm
With Stant
After Packing
mm 
2. 
Product 
Only SET 
Kg  
With BOX 
Kg  
10-3. 42LG50
No. Item 
Content 
Unit 
Remark 
1. Product 
Widt(W) 
Length(D)  Height(H)  mm 
 
Dimension 
Before Packing 
927±1.0 
280.5±0.7
692.8±2.0
mm
With Stant
After Packing
999 
264 
874 
mm 
2. 
Product 
Only SET 
TBD
Kg  
With BOX 
TBD 
Kg  
10-4. 37LG50
No. Item 
Content 
Unit 
Remark 
1. Product 
Widt(W) 
Length(D)  Height(H)  mm 
 
Dimension 
Before Packing 
936.4±1.0 
293.8±0.7
684.4±2.0
mm
With Stant
After Packing
1195 
253 
665 
mm 
2. 
Product 
Only SET 
18.3
Kg  
With BOX 
23 
Kg  
- 12 -
ADJUSTMENT INSTRUCTION
1. Application Range
These instructions are applied to all of the LCD TV, LA84A
Chassis.
2. Notice
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 protect test instrument. 
2.2 Adjustment must be done in the correct order. But it is
flexible when its factory local problem occurs.
2.3 The adjustment must be performed in the circumstance of
25±5°C of temperature and 65±10% of relative humidity if
there is no specific designation.
2.4 The input voltage of the receiver must keep 100~220V,
50/60Hz.
2.5 Before adjustment, execute Heat-Run for 30 minutes. 
O
After Receive 100% Full white pattern (06CH) then
process Heat-run 
(Or 8. Test Pattern condition of Ez – Adjust)
O  
How to make set white pattern 
A.  Press Power ON button of Service Remocon
B.  Press ADJ button of Service remocon. Select "10.
Test pattern" and, after select "White" using
navigation button, and then you can see 100% Full
White pattern. 
* In this status you can maintain Heat-Run useless any
pattern generator 
Note) If you maintain one picture over 20 minutes (Especially
sharp distinction black with white pattern – 13Ch, or
Cross hatch pattern – 09Ch) then it can appear image
stick near black level
3. Adjust ADC(MST3361) 
3.1 Overview  
The ADC adjustment automatically sets the optimum black
level and the gain and compensates the RGB deviation at the
Analog-to-Digital converter
3.2 Devices and conditions to use 
1) Adjusting remote controller
2) 801GF(802B, 802F, 802R) or MSPG925FA Pattern
Generator
- Resolution: 480i, 1080p
- Pattern name: Horizontal 100% Color Bar Pattern
- Pattern level: 0.7±0.1 Vp-p
- Image
3) Use the specified signal cable
Note) It should be checked because each equipment may be
different from the above pattern due to model and
pattern.
3.3 How to adjust 
3.3.1 ADC 480i Comp1
1) Check the Component1 connection condition from the
used device.
2) Apply 480i Mode, Horizontal 100% Color Bar Pattern
to Comp1 port.
(MSPG-925FA => Model: 209, Pattern: 65)
3) Set the input to Component1 and select °ÆNormal°Ø
as video.
4) Wait for one second or longer after receiving the
signal, press the ADJ key of the R/C to enter into 'Ez-
Adjust', select '3. ADC 480i Comp1', and press the
Enter key to automatically adjust.
5) If it is normally adjusted, the message "ADC
Component1 Success" is displayed.
6) If it is not normally adjusted, the message 'ADC
Component1 480i Fail' is displayed. If the component
is not connected, the message Component1 Not
Connected, or if the input format is not 480i, the
message 'Not Valid Format', or if there is no input
signal, the message 'Check Signal Status' is displayed
for one second.
7) If the adjustment is failed, check the pattern or the
adjustment condition and then readjust
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