DOWNLOAD LG 32LG30 (CHASSIS:LA85D) Service Manual ↓ Size: 5.87 MB | Pages: 35 in PDF or view online for FREE

- 13 -

(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: LA84A Chassis applied None USA

Model(Canada, Mexico)

1) Press the In-Start key of the R/C and press the red oval

OP1(PIP CH-) key to enter into the Factory Option menu.

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

select according to the destination. At this time, use the
volume +/- 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.

- 14 -

Check P700 All.

Voltage Level(5V, 12V, 16V)

Check Q706 Output.

Voltage Level(12V or 5V)

Check Power connector.

OK?

Yes

No

Yes

Check X100 clock.

12MHz

Replace Power board.

Replace Q706 & Recheck.

Yes

No

Check IC704 #2 Pin.

Voltage Level 2.6V

Yes

Replace IC704 & X100.

No

Replace X100.

No

Check RF cable.

Check Tuner 5V Power

IC710 #3 Pin

Yes

Yes

Check Check Demodulator Input Clock

X400(25MHz)

Replace IC710.

No

Check IF_P/N Signal

Yes

Bad Tuner. Replace Tuner.

No

Replace X400.

No

Yes

Check Mstar LVDS  output.

Check IC400(LGDT) Output

- Ar401, AR402

Yes

Replace IC400.

No

Replace Mstar(IC100).

No

- 15 -

Check RF cable.

Check Tuner 5V Power.

IC710 #3 Pin

Yes

Yes

Check CVBS signal.

Tu400 #16 Pin

Replace IC710.

No

Check IIC Line.

Yes

Check other IC. (ex:LGDT, NTP, I/O)

No

Replace Tuner (TU400).

No

Yes

Check Mstar LVDS output

Replace Mstar(IC100).

No

Check Component Cable.

Check JK900/ JK901.

Yes

Yes

Check input signal format.

Is it supported?

Yes

Check signal IC903 output

R990, R991, R993

Replace Jack.

No

Check signal C1708, C1709, C1710,

C1711, C1712, C1713

Yes

Replace it.

No

Replace IC903.

No

Yes

Check Mstar LVDS output

Replace Mstar(IC100).

No

- 16 -

Check RGB Cable conductors for

damage.

Check JK605

Yes

Yes

Check input signal format.

Is it supported?

Yes

Check R/G/B signal

R640, R641, R642

Replace Jack.

No

Check signal Hsync, Vsync

R633, R634

Yes

Check other set.
If no problem, check signal line.

No

Check other set.
If no problem, check signal line.

No

Yes

Check Mstar LVDS output

Replace Mstar(IC100).

No

Check AV Cable/ S-Video Cable for damage or

open conductor.

Check JK600(Rear).

Check JK602(Side).

Yes

Check input signal format.

Is it supported?

Yes

Check signal

C635(Composite), C634/ C633(S-Video)(Rear),

R615(Composite)(Side)

Replace Jack.

No

Yes

Check other set.
If no problem, check signal line.

No

Yes

Check Mstar LVDS output

Replace Mstar(IC100).

No