DOWNLOAD LG 42SL90QD-DA (CHASSIS:LT91L) Service Manual ↓ Size: 4.5 MB | Pages: 69 in PDF or view online for FREE

Model
42SL90QD-DA (CHASSIS:LT91L)
Pages
69
Size
4.5 MB
Type
PDF
Document
Service Manual
Brand
Device
TV / LCD
File
42sl90qd-da-chassis-lt91l.pdf
Date

LG 42SL90QD-DA (CHASSIS:LT91L) Service Manual ▷ View online

- 7 -
4.2.  MODEL General Specification
No Item 
Specification 
Remarks
1 Market 
Taiwan
Digital DVB-T 
UHF 
14-69
2 Broadcasting 
Analog
NTSC-M 
Receiving  
Analog 
Upper Heterodyne
system
Digital COFDM,QAM
Video Input RCA (2EA) 
NTSC
Component Input (2EA)
Y/Cb/Cr 
Y/Pb/Pr
6 RGB 
Input 
RGB-PC
HDMI1-DTV/DVI
PC(HDMI version 1.3) / DTV format, Support HDCP
7
HDMI Input (4EA)
HDMI2-DTV
DTV format, Support HDCP
HDMI3-DTV
DTV format, Support HDCP
HDMI4-DTV
DTV format, Support HDCP
Audio Input (5EA)
RGB/DVI Audio, Component1/2, AV1/2
RGB/DVI Audio : Stereo Phone Jack 
Others : RCA Jack
SDPIF out (1EA)
Optical Audio out
10 
USB (1EA)
USB2.0 
JPEG, MP3, DivX, and SVC (download)
5. Chroma& Brightness
5.1. Module optical specification
*** LGD module Uniformity Measurement Position*** 
P1
P2
P3
P4
P5
1W/4
2W/4
3W/4
1H/4
2H/4
3H/4
: Measurement position (5 point)
No.
Item
Min
Typ
Max
Remark
1.
Cool
White Balance,X axis
0.267
0.269
0.271 
White Balance,Y axis 
0.271
0.273
0.275
PSM: Vivid,  CSM: Cool,
2.
Medium
White Balance,X axis
0.283
0.285
0.287
White (85IRE)
White Balance,Y axis 
0.291
0.293
0.295 
Dynamic contrast: off, Dynamic color: off
3.
Warm
White Balance,X axis
0.311
0.313
0.315
White Balance,Y axis 
0.327
0.329
0.331
- 8 -
1) Optical characteristics are determined after the unit has been ‘ON’ and stable in a dark environment at 25±2°C
2) Surface luminance is the luminance value at center 1-point across the LCD surface 50cm from the surface with all pixels
displaying white.
No.
Item Specification 
Min.
Typ.
Max.
Remark
1.
Viewing Angle<CR>10> 
Right/Left/Up/Down 
178
CR > 10
Luminance (cd/m
2
)
480 
600
PSM: Vivid, CSM: Cool,
2.
Luminance
White (100IRE)
Variation -
1.3 
3.
Contrast Ratio 
CR 
1000 
1200
All white/ All black
White WX
0.279 
WY Typ
0.292
Typ 
RED 
Xr
- 0.03
0.638
+0.03
PSM: Vivid, CSM: Cool
4.
CIE Color Coordinates
Yr
0.334
White (85IRE)
Green Xg
0.290
Yg
0.606
Blue Xb 
0.144
Yb  
0.064
- 42” LCD Module (LGD) LC420WUD-SBM4
5.2. Chroma (PSM:Vivid, Color Temperature:Cool)
- except “RGB PC Mode PSM: Standard, Color Temperature:Medium”
** The W/B Tolerance is ±0.002 for Adjustment, but for DQA ±0.015
6. SET Optical Feature
6.1. General feature
(Measurement Condition: Full white/ Vivid -> Measure the black luminance after 30 seconds.
6.2. Special feature 
Dynamic CR 40000:1 ->  Measure the black luminance after 30 seconds.
No.
Item
Luminance(min)
C/R(min)
Remark
AV,COMPONENT,HDMI
AV,COMPONENT,HDMI  
1
47 inch
400 cd/m
2
1000
except from the PC mode.
No.
Item Min 
Typ
Max 
Remark
1
Dynamic CR
90,000
100,000
HDMI  720p Full Black pattern
(Only HDMI mode)
- 9 -
7. Component Video Input (Y, C
B
/P
B
, C
R
/P
R
)
No
Specification
Remark
Resolution
H-freq(kHz)
V-freq(Hz)
1.
720x480 15.73 
60.00
SDTV,DVD 
480i
2.
720x480 15.63 
59.94
SDTV,DVD 
480i
3.
720x480
31.47
59.94
480p
4.
720x480
31.50
60.00
480p
5.
720x576 
15.625 
50.00
SDTV,DVD 625 Line
6.
720x576 31.25 
50.00
HDTV 
576p
7.
1280x720
45.00
50.00
HDTV 720p
8.
1280x720
44.96
59.94
HDTV 720p
9.
1280x720 45.00 
60.00
HDTV 
720p
10.
1920x1080 31.25 
50.00
HDTV 
1080i
11.
1920x1080
33.75
60.00
HDTV 1080i
12.
1920x1080 33.72
59.94
HDTV 
1080i
13.
1920x1080 56.250
50 
HDTV 
1080p
14.
1920x1080
67.43/67.5
59.94/60 HDTV 
1080p
No
Specification
Proposed
Remark
Resolution
H-freq(kHz)
V-freq(Hz)
Pixel Clock(MHz)
1.
720*400 
31.468 
70.08
28.321 
For only DOS mode
2.
640*480 31.469 
59.94
25.17  VESA
Input 848*480 60Hz, 852*480 60Hz
-> 640*480 60Hz Display
3.
800*600
37.879
60.31
40.00 VESA
4.
1024*768
48.363
60.00
65.00
VESA(XGA)
5.
1280*768 47.78 59.87
79.5 
WXGA 
 
6.
1360*768 47.72
59.8
84.75 
WXGA
7.
1280*1024 63.595  60.0 
108.875
SXGA
FHD 
model 
8.
1920*1080 66.587
59.93
138.625
WUXGA
FHD 
model
8. RGB (PC)
- 10 -
No
Resolution
H-freq(kHz)
V-freq.(Hz)
Pixel clock(MHz)
Proposed
Remark
1.
720*400 31.468 
70.08 
28.321 
HDCP
2.
640*480 31.469 
59.94 
25.17
VESA  HDCP
3. 800*600
37.879
60.31 
40.00 
VESA 
HDCP
4.
1024*768
48.363
60.00 65.00 
VESA(XGA)
HDCP
5.
1280*768 47.78
59.87
79.5
WXGA  HDCP
6.
1360*768 47.72 59.8 84.75
WXGA  HDCP
7.
1280*1024 63.595
60.0  108.875  SXGA
HDCP
8.
1920*1080
67.5
60
148.5
WUXGA
HDCP
9.2.  PC Mode
9. HDMI Input (PC/DTV)
9.1. DTV Mode
No
Resolution
H-freq(kHz)
V-freq.(Hz)
Pixel clock(MHz)
Proposed
Remark
1.
720*480 
31.469 /31.5 
59.94 / 60
27.00/27.03
SDTV 480P
2.
720*576 31.25 
50
54 
SDTV 
576P
3.
1280*720 37.500 
50
74.25 
HDTV 
720P
4.
1280*720 
44.96 / 45 
59.94 / 60
74.17/ 74.25 
HDTV 720P
5.
1920*1080 
33.72 / 33.75 
59.94 / 60
74.17/ 74.25 
HDTV 1080I 
6.
1920*1080 28.125 50.00
74.25 
HDTV 
1080I
7.
1920*1080 
26.97 / 27 
23.97 / 24
74.17/ 74.25 
HDTV 1080P
8.
1920*1080
33.716 / 33.75
29.976 / 30.00
74.25
HDTV 1080P
9.
1920*1080 56.250 50
148.5
HDTV 
1080P
10.
1920*1080 
67.43 / 67.5 
59.94 / 60
148.35/148.50 
HDTV 1080P
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