37LG50 (CHASSIS:LA84D) - LG TV Service Manual (repair manual). Page 13

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(High-Bandwidth Digital Contents Protection)

1) Set write size to 64 bytes
2) Set delay time to 250ms
3) Connect D-sub Signal Cable to D-Sub Jack
4) Input HDCP key with HDCP-key- in-program
5) HDCP Key value is stored on EEPROM(AT24C512) which

is 80~A1 addresses of  0xA0~0xA2 page

6) AC off/ on and on HDCP button of MSPG925 and confirm

whether picture is displayed or not of using MSPG925

7) HDCP Key value is different among the sets.

model only, which selects the rating related country.

2) Applied models: LA84D Chassis applied None USA

Model(Canada, Mexico)

1) Press the In-Start key of the R/C and change at 0. AREA

OPTION menu.

2) Select 1.USA, 2.CANADA or 3.MEXICO from the country

select according to the destination. At this time, use the 

A

key to adjust 

- After completing the final test, in order to set the set to the

shipping condition, press the In-Stop key of the R/C to make
sure that the set is turned off.

(1) Preparing for the automatic test on the GND & resisting

pressure 

- Make sure that the power cord is completely inserted into

the set. (When it is disconnected or loosened, test after
inserting it)

(2) Perform the automatic test on the GND & resisting pressure

1) The set with power cord, the cord and the A/V completely

inserted into the tuner is loaded on the pallet and entered
into the automatic test process.

2) Connect the D-terminal AV JACK tester
3) Turn on the automatic (GWS103-4)
4) Perform the GND TEST
5) If it is not good, the buzzer is operated to notify the test

result to the operator.

6) If it is OK, it is automatically switched to the resisting

pressure test. (Disconnect the cord and the A/V from the
AV JACK BOX)

6) Perform the resisting pressure test
7) If it is not good, the buzzer is operated to notify the test

result to the operator.

8) If it is OK, the GOOD LAMP is turned and the stopper is

moves down, and it moves to the next process.

(1) TEST voltage

- GND:1.5KV/min at 100mA
- SIGNAL:3KV/min at 100mA

(2) TEST time:1 second
(3) TEST POINT

- GND test = between Power cord GND and Signal cable

metal GND

- Resisting pressure test = between Power cord GND and

Live & Neutral

(4) LEAKAGE CURRENT: Set to 0.5mArms 

The USB download is for the quick service response via the
S/W upgrade and for applying the S/W upgrade necessary for
the board adjustment

1) After turning on the set, make sure that the display screen

is turned on.

2) When the USB Memory Stick with the upgrade file applied

is inserted into the USB jack on the main board, the
following screen (example) is displayed after several
seconds

3) Check the current version at [Current TV Software Version

Information], check the S/W version to upgrade at
[Software file list in USB Memory], and press the Enter
button of the TV remote controller.

4) Downloading is proceeded as shown at the below screen,

and when it is ended, turning on/off is automatically done.

(When the automatic proceeding is not smoothly done,
manually perform the power On/Off).

5) When downloading is ended, remove the USB Memory

Stick from the USB jack.

6) Press the IN-START button of the remote controller to

check the upgraded S/W version.