LG 42LB7DF (CHASSIS:LJ81A) Service Manual ▷ View online
- 9 -
No
Resolution
H-freq(kHz)
V-freq.(Hz)
Pixel clock(MHz)
Proposed
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
74.25
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
13
1920*1080
56.25
50.000
148.5
HDTV 1080P
14
1920*1080
28.125
25.000
74.25
HDTV 1080P
8. HDMI Input (PC/DTV)
- 10 -
9. General specifications (module)
No
Item
Value
Unit
Remark
1
Active Screen Size
1067.31 (diagonal)
mm
42.02 inches
2
Outline Dimension
983(H)x576(V)x47.3(D)
mm
3
Pixel Pitch
0.4845 x 0.4845
um
4
Pixel Format
1920(H)x1080(V) RGB stripe arrangement
5
Color Depth
8bit 16.7
Mbit
6
Luminance ,White
500 (center 1 point typ)
cd/m2
7
Viewing Angle (CR>10)
R/L 178(Typ),U/D 178(Typ)
degree
8
Power Consumption
168.36
Watt
9
Weight
11(Typ), 12(Max)
kg
10
Display Operating Mode
Transmissive mode ,normally black
11
Surface Treatment
Hard coating (3H)
10. Electro Optical Characteristic Specifications (module standard)
No
Item
Min
Typ
Max
Unit
Remark
1
Contrast Ratio
CR
800
1000
CR with DCR
2
Surface Luminance, White
400
500
Cd/m
2
Full white
3
Luminance Variation
1.3
(•‰ white/5P)
4
Response Time
Gray to Gray
5
8
msec
Rise+decay
10
14
5
Color coordinate
RED
X
Typ
TBD
Typ
Full Pattern
Y
-0.03
TBD
+0.03
GREEN
X
TBD
Y
TBD
BLUE
X
TBD
Y
TBD
WHITE
X
TBD
Y
TBD
6
Viewing Angle (CR>10)
X axis right(ø=0)
89
degree
X axis left(ø=180)
89
Yaxis up (ø=90)
89
Z axis down(ø=270)
89
7
Gray Scale
Without DCR
2.2
With DCR
- 11 -
12. Customer Menu Setup (Shipment Condition)
No
Item
Condition
Remark
1
Input Mode
TV02CH
2
Volume Level
20
3
Mute
Off
4
Aspect Ratio
16:9
5
Video
EZ Picture
Daylight
Color temperature
(Disable)
Can be access only EZ picture is setting user mode
XD
Auto
Advanced
Cinema: Off
Reset
6
Audio
Audio Language
Off
EZ SoundRite
Off
EZ Sound
Normal
Balance
0
Treble
50
Bass
50
Front Surround
Off
TV Speaker
On
7
Timer
Auto clock
Off
Manual Clock
Off
Off Timer
Off
On Timer
Off
Auto Off
Off
8
Option
Aspect Ratio
16:9
Caption/Text
Off
Caption Option
Off
Language
English
ISM Method
Normal
SET ID
1
9
Lock
Lock System
Off
Set password
On
( Default : 0000 )
Block channel
None
Movie Rating
Off
TV Rating-Children
Off
TV Rating-General
Off
Audio Block
Off
10
Channel Memory
none
- 12 -
ADJUSTMENT INSTRUCTION
1. Application Range
This spec sheet is applied all of the 'LJ81A' Chassis.
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 protect test instrument.
transformer will help protect test instrument.
(2) Adjustment must be done in the correct order.
(3) The adjustment must be performed in the circumstance of
(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.
there is no specific designation.
(4) The input voltage of the receiver must keep 100-220V~,
50/60Hz.
(5) The receiver must be operated for about 5 minutes prior to
the adjustment.
O
After RGB 100% Full White pattern(06CH) then process
Heat-run(or “8.Test patter” condition of EZ-Adjust
status).
status).
O
Enter into HEAT-RUN MODE
1) Press the POWER ON KEY on R/C for adjustment.
2) Press ADJ button of Service remocon. Select
2) 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.
navigation button, and then you can see 100% Full
White pattern.
3) In this status you can maintain Heat-Run useless any
pattern generator.
* Notice!
If you maintain one picture over 20minute(Especially sharp
distinction black with white pattern-13Ch, or Cross hatch pattern-
09Ch) then it can appear image stick near black level.
If you maintain one picture over 20minute(Especially sharp
distinction black with white pattern-13Ch, or Cross hatch pattern-
09Ch) then it can appear image stick near black level.
3. Adjustment items
3-1. PCB Assembly adjustment
O
CPLD DOWNLOAD
O
Adjust 480i Comp1
O
Adjust 1080p Comp1 / RGB
- If it necessary, it can adjustment at Manufacture Line.
- You can see set adjustment status at “9.ADJUST
- You can see set adjustment status at “9.ADJUST
CHECK” of the “In-start menu”.
3-2. Set Assembly Adjustment
O
EDID(The Extended Display Identification Data)
/ DDC(Display Data Channel) download
O
Color Temperature(White Balance) Adjustment
O
Make sure RS-232C control
O
Selection Factory output option
4.PCB Assembly Adjustment
4-1. CPLD DOWNLOAD
- JTAG MODE
(1) <<PRINT PORT>> PIN MAP
Component
2
3
8
11
13
15
18 to 25
JTAG Mode Signal Name
TCK
TMS
TDI
TDO
-
VCC
GND
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