42LV5500-ZC, 42LV550T-ZC, 42LV550W-ZC, 42LV5590-ZC (CHASSIS:LD12E) - LG TV Service Manual (repair manual). Page 13

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3.8.1 Connect: PCBA Jig-> RS-232C Port== PC-> RS-232C Port  

3.8.2 MAC Address, CI Plus key and Widevine Key write.

11Y LCD TV + MAC + Widevine + GP3_BCM CI Plus

(1) Equipment setting

- Play file: keydownload.exe
- select the download items.(MARLIN)

(2) Communication Prot connection

- Key Write :Com 1,2,3,4 and 115200(Baudrate)
- Barcode : Com 1,2,3,4 and 9600(Baudrate)

(3) Mode check: Online Only
(4) Check the test process: DETECT -> MAC -> CI ->

WIDEVINE

(5) Play: START
(6) Result: Ready, Test, OK or NG

- only for DVB-S/S2 model
(1) Test method

1) Press "Power on" button of a service Remote control.

(Baud rate : 115200 bps)

2) Connect cable between satellite ANT and test JIG.
3). Connect RS232-C Signal Cable.
4) Write LNB ON control command through RS-232-C.
5) check LED light ‘ON’ at 18V menu.
6) check LED light ‘ON’ at 22KHz tone menu.
7) Write LNB OFF control command through RS-232-C.
8) check LED light ‘OFF’ at 18V menu.
9) check LED light ‘OFF’ at 22KHz tone menu.

(2) RS-232 command for test LNB

(3) Test result

- After send LNB On command, ‘18V LED’ and ‘22KHz

tone LED’ should be ON. 

- After send LNB OFF command, ‘18V LED’ and ‘22KHz

tone LED’ should be OFF. 

ADC adjustment is needed to find the optimum black level and
gain in Analog-to-Digital device and to compensate RGB
deviation.

(1) Adjust Remote control
(2) 801GF(802B, 802F, 802R) or MSPG925FA Pattern Generator

- Resolution :

480i, 720*480(MSPG-925FA->Model:209, Pattern:65)-480i
1080p, 1920*1080(MSPG-925FA->Model:225, Pattern:65)-1080p

- Pattern : Horizontal 100 % Color Bar Pattern
- Pattern level: 0.7 ± 0.1 Vp-p
- Image

(3) Must use standard cable

* If Adjust ADC is “OTP”, It doesn’t need ADC adjustment.

(GP3-BM)

(1) ADC 480i, 1080p Comp1

1) Check connected condition of Component 1 cable to the

equipment.

2) Give a 480i, 1080p Mode, Horizontal 100% Color Bar

Pattern to Component 1.

(MSPG-925FA -> Model: 209, Pattern: 65) - 480i
(MSPG-925FA -> Model: 225, Pattern: 65) - 1080p 

3) Change input mode as Component 1 and picture mode

as “Standard”

4) Press the In-start Key on the ADJ remote after at least 1

min of signal reception. Then, select 7. External ADC ->
1. COMP 1080p on the menu. Press enter key. The
adjustment will start automatically.

5) If ADC calibration is successful, “ADC RGB Success” is

displayed.

If ADC calibration is failure, “ADC RGB Fail” is displayed.

6) If ADC calibration is failure, after recheck ADC pattern or

condition retry calibration Error message refer to 5).

(2) ADC 1920*1080 RGB

1) Check connected condition of Component & RGB cable

to the equipment

2) Give a 1920*1080 Mode, 100 % Horizontal Color Bar

Pattern to RGB port.

(MSPG-925 Series -> model: 225 , pattern: 65 ) 

3) Change input mode as RGB and picture mode as “Standard”.
4) Press the In-start Key on the ADJ remote after at least 1

min of signal reception. Then, select 7. External ADC ->
1. COMP 1080p on the menu. Press enter key. The
adjustment will start automatically.

5) If ADC calibration is successful, “ADC RGB Success” is

displayed.

If ADC calibration is failure, “ADC RGB Fail” is displayed.

6) If ADC calibration is failure, after recheck ADC pattern or

condition retry calibration Error message refer to 5).

 

PCBA Power ON Check

Result

Play

MARLIN Key : MAC + CI + WIDEVINE

Com Port Check

CI +  Key Write

WIDEVINE Key Write

MAC Address Write

Command

Set ACK

LNB On

[A][I][ ][Set ID][ ][30][Cr]

[O][K][x] or NG : [N][G][x]

LNB Off

[A][I][ ][Set ID][ ][40][Cr]

[O][K][x] or NG : [N][G][x]