LG 47LS679C (CHASSIS:LD21B) Service Manual ▷ View online
- 7 -
No.
Item
Specification
Remarks
2
Broadcasting system
1) PAL-BG
2) PAL-DK
3) PAL-I/I’
4) SECAM L/L’
5) DVB-T/T2/C/S
3
Receiving system
Analog : Upper Heterodyne
Digital : COFDM, QAM
► DVB-T
- Guard Interval(Bitrate_Mbit/s)
1/4, 1/8, 1/16, 1/32
- Modulation : Code Rate
QPSK : 1/2, 2/3, 3/4, 5/6, 7/8
16-QAM : 1/2, 2/3, 3/4, 5/6, 7/8
64-QAM : 1/2, 2/3, 3/4, 5/6, 7/8
► DVB-T2
- Guard Interval(Bitrate_Mbit/s)
1/4, 1/8, 1/16, 1/32, 1/128, 19/128, 19/256,
- Modulation : Code Rate
QPSK : 1/2, 2/5, 2/3, 3/4, 5/6
16-QAM : 1/2, 2/5, 2/3, 3/4, 5/6
64-QAM : 1/2, 2/5, 2/3, 3/4, 5/6
256-QAM : 1/2, 2/5, 2/3, 3/4, 5/6
► DVB-C
- Symbolrate : 4.0Msymbols/s to 7.2Msymbols/s
- Modulation : 16QAM, 64-QAM, 128-QAM and 256-QAM
► DVB-S/S2
- symbolrate
DVB-S2 (8PSK / QPSK) : 2 ~ 45Msymbol/s
DVB-S (QPSK) : 2 ~ 45Msymbol/s
- viterbi
DVB-S mode : 1/2, 2/3, 3/4, 5/6, 7/8
DVB-S2 mode : 1/2, 2/3, 3/4, 3/5, 4/5, 5/6, 8/9, 9/10
4
Scart Jack (1EA)
PAL, SECAM
Scart 1 Jack is Full scart and support RF-OUT(analog).
5
Video Input RCA(1EA)
PAL, SECAM, NTSC
4 System : PAL, SECAM, NTSC, PAL60
6
Component Input (1EA) Y/Cb/Cr
Y/Pb/Pr
7
RGB Input
RGB-PC
Analog(D-SUB 15PIN)
Some models (LD21A,LD21C) are not supported.
8
HDMI Input (3EA)
HDMI1-DTV/DVI
HDMI2-DTV
HDMI3-DTV
PC(HDMI version 1.3)
Support HDCP
The number of Input ports is different by model.
9
Audio Input (2EA)
RGB/DVI Audio
Component & AV
In case of the RGB/DVI Audio input,
Some models(LD21A,LD21C) are not supported.
Component & AV’s audio input is used by common port.
10 SDPIF out (1EA)
SPDIF out
Some models(LD21A,LD21C) are not supported.
11
Earphone out (1EA)
Antenna, AV1, AV2, Component, RGB,
HDMI1, HDMI2, HDMI3
Some models(LD21A,LD21C) are not supported.
12 USB (1EA or 2EA)
EMF,
DivX HD,
For SVC (download)
JPEG, MP3, DivX HD
LM58, CM96: 2EA
LS56, LS35, CS46, LS,34, LM34 : 1EA
13 DVB
DVB-T
CI : UK, Finland, Denmark, Norway, Sweden, Russia,
Spain, Ireland, Luxemburg, Belgium, Netherland
CI+ : France(Canal+), Italy(DGTVi)
DVB-C
CI : Switzerland, Austria, Slovenia, Hungary, Bulgaria
CI+ : Switzerland(UPC,Cablecom), Netherland(Ziggo),
Germany(KDG,CWB), Finland(labwise)
DVB-S
CI + : Germany(Astra HD+ )
14 Ethernet (1EA)
DLNA(Wired, DMP only)
Some models (LD21A,LD21C) are not supported.
- 8 -
5. Video resolutions (2D)
5.1. Component Input (Y, C
B
/P
B
, C
R
/P
R
)
5.2. RGB Input (PC)
No.
Resolution
H-freq(kHz)
V-freq(Hz)
Pixel clock(MHz)
Proposed
1
720*576
15.625
50.00
13.5
SDTV ,DVD 576I
2
720*480
15.73
60.00
13.5135
SDTV ,DVD 480I
3
720*480
15.73
59.94
13.50
SDTV ,DVD 480I
4
720*576
31.25
50.00
27.00
SDTV 576P
5
720*480
31.50
60.00
27.027
SDTV 480P
6
720*480
31.47
59.94
27.00
SDTV 480P
7
1280*720
37.50
50.00
74.25
HDTV 720P
8
1280*720
45.00
60.00
74.25
HDTV 720P
9
1280*720
44.96
59.94
74.176
HDTV 720P
10
1920*1080
28.125
50.00
74.25
HDTV 1080I
11
1920*1080
33.75
60.00
74.25
HDTV 1080I
12
1920*1080
33.72
59.94
74.176
HDTV 1080I
13
1920*1080
56.25
50.00
148.50
HDTV 1080P
14
1920*1080
67.50
60.00
148.50
HDTV 1080P
15
1920*1080
67.432
59.94
148.352
HDTV 1080P
16
1920*1080
27.00
24.00
74.25
HDTV 1080P
17
1920*1080
26.97
23.94
74.176
HDTV 1080P
18
1920*1080
33.75
30.00
74.25
HDTV 1080P
19
1920*1080
33.71
29.97
74.176
HDTV 1080P
No.
Resolution
H-freq(kHz)
V-freq.(Hz)
Pixel clock(MHz)
Proposed
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
800*600
37.879
60.31
40.00
VESA(SVGA)
O
5
1024*768
48.363
60.00
65.00
VESA(XGA)
O
6
1152*864
54.348
60.053
80.00
VESA
O
7
1360*768
47.712
60.015
85.50
VESA (WXGA)
O
8
1920*1080
67.5
60
148.5
HDTV 1080P
O
- 9 -
5.3. HDMI Input(PC/DTV)
No.
Resolution
H-freq(kHz)
V-freq.(Hz)
Pixel clock(MHz)
Proposed
Remark
PC(DVI)
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
800*600
37.879
60.31
40.00
VESA(SVGA)
O
5
1024*768
48.363
60.00
65.00
VESA(XGA)
O
6
1152*864
54.348
60.053
80.00
VESA
O
7
1360*768
47.712
60.015
85.50
VESA (WXGA)
O
8
1280*1024
63.981
60.020
108.0
VESA (SXGA)
O
FHD only
9
1920*1080
67.50
60.00
148.5
HDTV 1080P
O
FHD only
DTV
1
720*480
31.47
59.94
27.00
SDTV 480P
2
720*480
31.50
60.00
27.027
SDTV 480P
3
720*576
31.250
50.00
27.00
SDTV 576P
4
1280*720
37.50
50.00
74.25
HDTV 720P
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
28.125
50.00
74.25
HDTV 1080I
8
1920*1080
33.75
60.00
74.25
HDTV 1080I
9
1920*1080
33.72
59.94
74.176
HDTV 1080I
10
1920*1080
56.250
50.00
148.50
HDTV 1080P
11
1920*1080
67.50
60.00
148.50
HDTV 1080P
12
1920*1080
67.432
59.94
148.352
HDTV 1080P
13
1920*1080
27.00
24.00
74.25
HDTV 1080P
14
1920*1080
26.97
23.976
74.176
HDTV 1080P
15
1920*1080
33.75
30.00
74.25
HDTV 1080P
- 10 -
ADJUSTMENT INSTRUCTION
1. Application Range
This specification sheet is applied to all of the LCD TV with
LD21B chassis.
2. Designation
(1) The adjustment is according to the order which is designated
and which must be followed, according to the plan which
can be changed only on agreeing.
(2) Power adjustment : Free Voltage.
(3) Magnetic Field Condition: Nil.
(4) Input signal Unit: Product Specification Standard.
(5) Reserve after operation : Above 5 Minutes (Heat Run)
Temperature : at 25 °C ± 5 °C
Relative humidity : 65 ± 10 %
Input voltage : 220 V, 60 Hz
(6) Adjustment equipments: Color Analyzer(CA-210 or CA-110),
DDC Adjustment Jig, Service remote control.
(7) Push the "IN STOP" key - For memory initialization.
3. Main PCB check process
▪ APC - After Manual-Insert, executing APC
* Boot file Download
(1) Execute ISP program "Mstar ISP Utility" and then click
"Config" tab.
(2) Set as below, and then click "Auto Detect" and check "OK"
message.
If "Error" is displayed, check connection between computer,
jig, and set.
(3) Click "Read" tab, and then load download file(XXXX.bin)
by clicking "Read"
(4) Click "Connect" tab. If "Can't" is displayed, check connection
between computer, jig, and set.
(5) Click "Auto" tab and set as below.
(6) Click "Run".
(7) After downloading, check "OK" message.
* USB DOWNLOAD
(1) Put the USB Stick to the USB socket.
(2) Automatically detecting update file in USB Stick.
- If your downloaded program version in USB Stick is Low,
it didn't work. But your downloaded version is High, USB
data is automatically detecting.
(3) Show the message "Copying files from memory".
(4) Updating is starting.
(5) Updating Completed, The TV will restart automatically.
(6) If your TV is turned on, check your updated version and
Tool option. (explain the Tool option, next stage)
* If downloading version is more high than your TV have, TV
can lost all channel data. In this case, you have to channel
recover. if all channel data is cleared, you didn’t have a DTV/
ATV test on production line.
* After downloading, have to adjust Tool Option again.
(1) Push "IN-START" key in service remote control.
(2) Select "Tool Option 1" and push "OK" key.
(3) Punch in the number. (Each model has their number)
(1)
filexxx.bin
(4)
(5)
(6)
(7)...........OK
filexxx.bin
(2)
(3)
Please Check the Speed :
To use speed between
from 200KHz to 400KHz
Case1 : Software version up
1. After downloading S/W by USB , TV set will reboot
automatically.
2. Push “In-stop” key.
3. Push “Power on” key.
4. Function inspection
5. After function inspection, Push “In-stop” key.
Case2 : Function check at the assembly line
1. When TV set is entering on the assembly line, Push
“In-stop” key at first.
2. Push “Power on” key for turning it on.
→ If you push “Power on” key, TV set will recover
channel information by itself.
3. After function inspection, Push “In-stop” key.
Click on the first or last page to see other 47LS679C (CHASSIS:LD21B) service manuals if exist.