LG 49UB8200, Service Manual

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ADJUSTMENT INSTRUCTION
1. Application Range
This spec. sheet applies to LA48V Chassis applied LED TV all
models manufactured in TV factory
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
(2) Adjustment must be done in the correct order.
(3) The adjustment must be performed in the circumstance of
25 ±5ºC of temperature and 65±10% of relative humidity if
there is no specific designation
(4) The input voltage of the receiver must keep 100~240V,
50/60Hz
(5) The receiver must be operated for about 5 minutes prior to
the adjustment when module is in the circumstance of over
15ºC
▪ 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
▪ 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
* 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.
3. Adjustment items
3.1. PCB assembly adjustment items
1) MAC Address, ESN Key and Wide-vine Key D/L
2) LAN Test( Ping-Test )
3) Main S/W program download : Using USB Memory stick
4) Input Tool - Option
5) Download EDID
6) ADC Calibration – RGB & Component
7) Check SW Version
3.2. SET assembly adjustment items
1) Input Area option.
2) Adjustment of White Balance : Auto
3) Adjustment of White Balance : Manual
4) Intelligent Sensor Inspection Guide
5) LAN Inspection Guide
6) Widevine Key Inspection Guide
7) Model name & Serial number D/L
8) Wi-Fi MAC Address Check
9) Local Dimming Inspection Guide
10) Preset CH information
11) GND and Internal Pressure check
12) Motion Remote controller Inspection
13) 3D Function test
14) Outgoing Condition Configuration
15) Sound spec
16) Factoring Option Data input.
4. PCB assembly adjustment method
4.1. ADC Calibration :
component using internal pattern
- An ADC calibration is needed to fine the optimum black level
and gain in Analog-to-Digital device
.
4.1.1. Adj. method
- Using RS-232C, adjust items listed in “4.1.2”
4.1.2. Adj. protocol
Protocol Command Set ACK
Enter adj. mode aa 00 00 a 00 OK00x
Source change xb 00 40 b 00 OK04x (Adjust 480i, 1080p Comp1 )
Begin adj. ad 00 10 OKx (Case of Success)
NGx (Case of Fail)
Read adj. data ad 00 20 000000000000000000000000007c007b-
006dx
Confirm adj. ad 00 99 NG 01 00x (Fail)
OK 01 01x (Success)
End adj. ad 00 90 a 00 OK90x
4.1.3. Adj. Order (TBD)
▪ aa 00 00 [Enter adj. mode]
▪ xb 00 04 [Change input source to Component1(480i&1080p)]
▪ ad 00 10 [Adjust 480i&1080p Comp1]
▪ aa 00 90 [End adj.]
4.2. 4.2.MAC Address, ESN Key and Wide-
vine Key Download
4.2.1. Equipment & Condition
1) Play file: keydownload.exe
2) Key Write: Com 1,2,3,4 and 115200 (Baudrate)
3) Barcode: Com 1,2,3,4 and 9600 (Baudrate)