DOWNLOAD LG 32CL20-UA (CHASSIS:LA92A) Service Manual ↓ Size: 5.97 MB | Pages: 33 in PDF or view online for FREE

Model
32CL20-UA (CHASSIS:LA92A)
Pages
33
Size
5.97 MB
Type
PDF
Document
Service Manual
Brand
Device
TV / LCD
File
32cl20-ua-chassis-la92a.pdf
Date

LG 32CL20-UA (CHASSIS:LA92A) Service Manual ▷ View online

- 7 -
5 Safety and Regulation
No
Item Min 
Typ
Max 
Unit 
Remark
1. Force Stability –Incline Plane Tip Test 
10 
deg 
IEC60065
2. Force Stability –Level Tip Test 
weigthx 0.13x9.8
N
3. Isolation Gap,AC-AC 
mm
4. Isolation Gap,AC-DC
mm
5. Isolation Gap,Primary <-> GND
mm
Isolation Gap,Primary <-> Secondary
6.0
mm 
6. Power Consumption,Max 
259W 
42CL40-UA
(1/8W non-clipped 
max.audio signal &Input voltage
International VideoSignal)
7. Power Consumption,Stand by (Input
0.5 
1W 
(ST-BY power saving circuit)
8. Power Consumption,Switch off 
0.02 W
9. Energy 
Saving Off 
100 
%
<Test Condition>
Minimum 
65 
75 
85 
%
Full white pattern
Medium 43 
53 
63 
%
Maximum 17
27 
37 %
Screen Off 
15 
%
10. OPC Black luminance
75 
%
150 Gray Input
<Test Condition>
difference of OPC
-white No Luminance
Vivid mode,4% window white pattern
on/off mode
difference
*255 Gray Input Case:white/black
No Luminance difference
11. Dielectric Voltage
GND 
1500 V/min at 100mA 
1.5KV
IEC60065
SIGNAL 
3000 V/min at 100mA 
3KV
12. Isolation Resistance 
4
M
13. Leakage Current 
0.35 
mA rms
14. UL Compliance 
Safety 
UL1492 
EMC 
FCC Class B
15.  CSA Compliance 
Safety 
CSA C22.2.
EMC 
IC Class B
6. DIGITAL Part
No Item  Standard 
Unit
Remark
1.
VSB Receiving 
CH.2 ~69CH
1 ~135CH(CATV)
1 ~135CH(CADTV))
2.
Video Resolution 
ATSC 18 FORMAT
3.
Audio Bit Resolution
32,40,48,56,64,80,96,112,128,160,
Kbps
192,224,256,320,384,448,512,576,640
4.
VSB RF Input
75
unbalanced, F type Connector input
5.
Sync Stable Time 
Under 3.0 
<None>SEC
- 8 -
7. Chroma& Brightness
7.1 Module optical specification
7.2Max Luminance &Contrast measure standard specification
- Max Luminance measure specification
1) In non-impressed condition, measure peak brightness displayable as much as possible LCD module.
2) Measuring instrument: CA-210 or a sort of Color Analyzer.
3) Pattern Generator :VG- 828 or a sort of digital pattern generator (displayable Full White &1/25 White Window pattern)
4) Measure condition
• Test pattern: in center,1/5(H)*1/5(V) of Window Pattern (white pattern in non-impressed condition)
• SET condition: Contrast &Brightness Level 100%
• Environment condition : Dark room in the non outside light
• Video menu option condition
5) Measurement 
• Do heat-run LCD module at 30minutes in normal temperature (25°C)by using full white pattern of 15%signal level(38 gray level).
• Impress test pattern signal in 1/5(H)*1/5(V)White Window of 100%(255Gray Level)
• measure 3 times brightness of central white window,and mark peak brightness in max brightness degree
• measure the same condition in video signal /RGB signal.
- Luminance uniformity measure specification
1) Impress 100%(255Gray Level) full white pattern at the same peak brightness measurement.
2) Measure average brightness in 5 points.
Signal 
Picture Mode
Dynamic Contrast 
Dynamic Color
Black Level
OPC
RF
NTSC-M
Vivid
High High Low
Off
AV NTSC-J  Vivid 
High 
High  High
Off
Component 720P
Vivid 
High 
High 
High
Off
RGB 1024x768
Vivid 
High
NA 
NA
Off
HDMI DTV 
720P 
Vivid 
High 
High 
Low
Off
No.
Item Specification 
Min.
Typ.
Max.
Remark
1.
Max Luminance
Modele 
400
500
cd/m2
(Center1-point/ Ful white pattern)
2.
Luminance uniformity
Luminance 
77
3.  Contrast Ratio
1000: 1
1300: 1
40000: 1(DCR) 50000:1(DCR)
4.
Color Coordinates
WX
Typ 
0.279
Typ 
White
WY
-0.03
0.292
+0.03
Xr
0.639
RED
Yr
0.333
Xg 0.292
Green
Yg 0.604
Xb 0.145
Blue
Yb
0.062
5. Color 
Temperatue
Cool
Typ
0.276 
Typ
85% Full white pattern
-0.015
0.283 
+0.015
**The W/B Tolerance is
Medium
0.285 
± 0.015 for Adjustment
0.293 
Dynamic contrast :off
Warm
0.313
Dynamic color :off
0.329
Energy saving mode :off
6.
Color Distortion, DG
10.0 
%
7.
Color Distortion,DP 
10.0 deg
8.
Color S/N,AM/FM 
43.0 
dB
9.
Color Killer Sensitivity
-80 
dB 
- Contrast ratio measure specification
1) Test display signal :30*30 dots White Window signal &all Black Raster signal
2) Dark room measure condition: Using touch type Color analyzer CA-210 Dark room in the non outside light
3) Bright room measure condition: In bright room of 150Lx illumination in the panel surface, locate a source of light on the above
45º of the panel surface.
4) Measure method
• In standard test condition,impress 30*30 dots White Window Pattern signal .
Measure center peak brightness degree Lw of white window
• Impress black Raster signal as contrast ratio measurement signal.
Measure black brightness degree Lb of PDP central
Calculate the following numerical formula.
Contrast ratio =Lw /Lb
If it does not use Prior measurement, use generally simple test measurement. The Correct measure specification is followed
by IEC61988-2/CD,JAPAN EIAJ-2710
- 9 -
A: H/ 4mm
B: V/ 4mm
@ H,V: Active Area
8. Component Video Input (Y, C
B
/P
B
, C
R
/P
R
)
No
Specification
Remark
Resolution
H-freq(kHz)
V-freq(Hz)
Pixel Clock(MHz)
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 
DTV 
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
- 10 -
No
Specification
Remark
DDC
Resolution
H-freq(kHz)
V-freq(Hz)
Pixel Clock(MHz)
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.
800*600 37.879  60.31
40.00 
VESA(SVGA)
O
5.
1024*768 48.363 
60.00 
65.00 
VESA(XGA)
O
6.
1280*768
47.776
59.870 79.5
CVT(WXGA)
X
7.
1360*768 47.712 
60.015 
85.50
VESA 
(WXGA)
X
8.
1280*1024
63.981
60.020
108.00 VESA 
(SXGA)
O
9.
1600*1200
75.00
60.00 162 
VESA 
(UXGA)
O
10.
1920*1080
66.587 59.934 148.5 
HDTV 
1080P 
O
9. RGB 
9
.1 PC INPUT
10. HDMI Input (PC/DTV)
10.1 PC Mode   
No
Resolution
H-freq(kHz)
V-freq.(Hz)
Pixel clock(MHz)
Proposed
Remark
1 640*350
31.468 
70.09 
25.17 
EGA
2 720*400
31.469
70.08
28.32
DOS 
3 640*480 
31.469 
59.94 
25.17 
VESA(VGA)
4 800*600 
37.879 
60.31 
40.00
VESA(SVGA)
5
1024*768
48.363 60.00
65.00
VESA(XGA)
6 1280*768 
47.776 
59.870
79.5 
CVT(WXGA)
7 1360*768 
47.712
60.015
85.50 
VESA 
(WXGA)
8 1280*1024 
63.981
60.020
108.00
VESA 
(SXGA)
9 1600*1200 
75.00 
60.00 
162 
VESA 
(UXGA)
10
1920*1080 67.5 
60 
148.5
HDTV 
1080P 
10.2 DTV Mode
No
Resolution
H-freq(kHz)
V-freq.(Hz)
Pixel clock(MHz)
Proposed
Remark
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 74.25 
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
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