LG 47LK550 (CHASSIS:LA12B) Service Manual ▷ View online
- 9 -
6. Component Video Input (Y, C
B/
P
B
, C
R
/P
R
)
No Resolution
H-freq(kHz) V-freq.(kHz) Pixel
clock
Proposed
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
31.50
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
59.94
148.352
HDTV 1080P
11.
1920*1080
27.000
24.000
74.25
HDTV 1080P
12.
1920*1080
26.97
23.976
74.176
HDTV 1080P
13.
1920*1080
33.75
30.000
74.25
HDTV 1080P
14.
1920*1080
33.71
29.97
740176
HDTV 1080P
7. RGB Input (PC)
No Resolution
H-freq(kHz) V-freq.(kHz) Pixel
clock
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.
800*600
37.879
60.31
40.00
VESA(SVGA)
O
5.
1024*768
48.363
60.00
65.00
VESA(XGA)
O
6.
1360*768
47.712
60.015
85.50
VESA(WXGA)
X
7.
1920*1080
66.587 59.934 138.50
WUXGA
O
- 10 -
8. HDMI input (PC/DTV)
No Resolution
H-freq(kHz) V-freq.(kHz) Pixel
clock
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)
X
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)
O
7.
1360*768
47.712
60.015
85.50
VESA (WXGA)
O
8.
1280*1024
63.981
60.020
108.00
VESA (SXGA)
O
9.
1920*1080 67.500
60.000
148.50
HDTV
1080P
O
DTV
1
720*480
31.47
60
27.027
SDTV 480P
O
2
720*480
31.47
59.94
27.00
SDTV 480P
O
3
1280*720
45.00
60.00
74.25
HDTV 720P
O
4
1280*720
44.96
59.94
74.176
HDTV 720P
O
5
1920*1080
33.75
60.00
74.25
HDTV 1080I
O
6
1920*1080
33.72
59.94
74.176
HDTV 1080I
O
7
1920*1080
67.500
60
148.50
HDTV 1080P
O
8
1920*1080
67.432
59.939
148.352
HDTV 1080P
O
9
1920*1080
27.000
24.000
74.25
HDTV 1080P
O
10
1920*1080
26.97
23.976
74.176
HDTV 1080P
O
11
1920*1080
33.75
30.000
74.25
HDTV 1080P
O
12
1920*1080
33.71
29.97
74.176
HDTV 1080P
O
- 11 -
ADJUSTMENT INSTRUCTION
1. Application range
This spec. sheet applies to LA12B Chassis applied LCD TV all
models manufactured in TV factory
models manufactured in TV factory
2. Specification
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.
isolation transformer will help protect test instrument.
2.2 Adjustment must be done in the correct order.
2.3 The adjustment must be performed in the
2.3 The adjustment must be performed in the
circumstance of 25±5°C of temperature and 65±10%
of relative humidity
of relative humidity
2.4 The input voltage of the receiver must keep
100~240V~, 50/60Hz.
2.5 The receiver must be operated for about 5 minutes
prior to the adjustment when module is in the
circumstance of over 15.
circumstance of over 15.
In case of keeping module is in the circumstance
of 0°C, it should be placed in the circumstance of
above 15°C for 2 hours
of 0°C, it should be placed in the circumstance of
above 15°C for 2 hours
In case of keeping module is in the circumstance
of below -20°C, it should be placed in the
circumstance of above 15°C for 3 hours.
of below -20°C, it should be placed in the
circumstance of above 15°C for 3 hours.
Caution) When still image is displayed for a period of 20
minutes or longer (especially where W/B scale is
strong. Digital pattern 13ch and/or Cross hatch
pattern 09ch), there can some afterimage in the
black level area.
strong. Digital pattern 13ch and/or Cross hatch
pattern 09ch), there can some afterimage in the
black level area.
3. Adjustment items
3.1 Main PCBA Adjustments
• EDID downloads for HDMI and RGB-PC
Remark
Above adjustment items can be also performed in Final
Assembly if needed. Adjustment items in both PCBA and final
assembly stages can be checked by using the INSTART
Above adjustment items can be also performed in Final
Assembly if needed. Adjustment items in both PCBA and final
assembly stages can be checked by using the INSTART
Menu 1.ADJUST CHECK.
3.2 Final assembly adjustment
• White Balance adjustment
• RS-232C functionality check
• Factory Option setting per destination
• Shipment mode setting (IN-STOP)
• GND and HI-POT test
• RS-232C functionality check
• Factory Option setting per destination
• Shipment mode setting (IN-STOP)
• GND and HI-POT test
3.3. Appendix
• Tool option menu, USB Download (S/W Update, Option and
Service only)
• Manual adjustment for ADC calibration and White balance.
• Shipment conditions, Channel pre-set
• Shipment conditions, Channel pre-set
Chassis Model
Name
Module
type
Local
dimming
THX
Remark
42/47/55LV3700-UA
Edge LED
X
X
1 point W/B adjustment
42/47LK550-UA,
42/47/55LK530-UA
Lamp
LA12B
- 12 -
4. MAIN PCBA Adjustments
4.1. MAC Address, ESN Key and Widevine
Key download
4.1.1. Equipment & Condition
1) Play file: keydownload.exe
1) Play file: keydownload.exe
4.1.2. Communication Port connection
1) Key Write: Com 1,2,3,4 and 115200(Baudrate)
2) Barcode: Com 1,2,3,4 and 9600(Baudrate)
1) Key Write: Com 1,2,3,4 and 115200(Baudrate)
2) Barcode: Com 1,2,3,4 and 9600(Baudrate)
4.1.3. Download process
1) Select the download items
2) Mode check: Online Only
3) Check the test process
-
1) Select the download items
2) Mode check: Online Only
3) Check the test process
-
US, Canada models: DETECT MAC_WRITE
WIDEVINE_WRITE
WIDEVINE_WRITE
-
Korea, Mexico models: DETECT MAC_WRITE
WIDEVINE_WRITE
WIDEVINE_WRITE
4) Play: START
5) Check of result: Ready, Test, OK or NG
6) Printer out (MAC Address Label)
5) Check of result: Ready, Test, OK or NG
6) Printer out (MAC Address Label)
4.1.4. Communication Port connection
1) Connect: PCBA Jig RS-232C Port == PC RS-232C Port
1) Connect: PCBA Jig RS-232C Port == PC RS-232C Port
4.1.5. Download
1) US, Canada models (11Y LCD TV + MAC + Widevine +
1) US, Canada models (11Y LCD TV + MAC + Widevine +
ESN Key)
2) Korea, Mexico models (11Y LCD TV + MAC + Widevine
Only)
4.1.6. Inspection
- In INSTART menu, check these keys.
- In INSTART menu, check these keys.
4.2. LAN port Inspection (Ping Test)
4.2.1. Equipment setting
1) Play the LAN Port Test PROGRAM.
2) Input IP set up for an inspection to Test Program.
2) Input IP set up for an inspection to Test Program.
- IP number: 12.12.2.2
4.2.2. LAN PORT inspection (PING TEST)
1) Play the LAN Port Test Program.
2) connect each other LAN Port Jack.
3) Play Test (F9) button and confirm OK Message.
4) remove LAN CABLE
2) connect each other LAN Port Jack.
3) Play Test (F9) button and confirm OK Message.
4) remove LAN CABLE
Click on the first or last page to see other 47LK550 (CHASSIS:LA12B) service manuals if exist.