DOWNLOAD LG 42LG350H (CHASSIS:LD85F) Service Manual ↓ Size: 6.9 MB | Pages: 39 in PDF or view online for FREE

(High-Bandwidth Digital Contents Protection)

- Connect D-sub Signal Cable to D-Sub Jack.
- Input HDCP key with HDCP-key- in-program.
- HDCP Key value is stored on EEPROM (AT24C512) which

is 0x80 addresses of 0xA0 page

- AC off/ on and on HDCP button of MSPG925 and confirm

whether picture is displayed or not of using MSPG925

- HDCP Key value is different among the sets. 

HDCP-KEY

0xA0:0x80
89 38 AE 0D ED 40 E6 BB FA 4E DE 51 FB 8E D9 AA
34 A8 C4 EA D8 6C DC 5C 91 5C B1 A6 13 2B 8B 8B
F7 46 CC 1C 88 20 A3 27 0E E1 28 84 89 39 A3 E2
36 86 CE 67 EB A0 F2 35 6B 86 F5 21 71 95 8A 77
A1 28 77 97 D3 7B EF 5C 15 48 AA 9E 97 39 CD 98
40 5E 68 56 66 EF C1 3C E1 8F 2A 82 DE 8F 52 CC
A8 1F 37 D9 D4 C6 24 16 7E 42 FF 57 CD 6B E0 86
00 1A F1 19 5A AF 37 97 86 BA 83 29 FE 41 A8 D5

0xA1:0x00
F4 73 43 03 23 22 C5 28 96 9E 35 0D 67 A8 8B DD
7A 89 38 E0 94 F0 FF F5 8F F3 4E 5C 82 09 F3 97
EB 01 52 EC D8 98 5C 4F 43 2E E7 9F F5 85 6D 15
B1 83 20 F8 5E D0 33 4F F0 C1 8F 65 77 3D 31 B2
FB A1 6E CA A6 D3 A2 35 1D 16 41 C3 89 86 98 78
8E 3E C1 64 01 79 05 21 47 AF 6A 6F 5B E1 4D 2B
2F CC 18 8E 42 DC 9A F8 3C D0 D0 57 04 FB 14 42
8C 54 9D A9 06 EB E7 48 E2 29 EF 7E FD F6 45 12
AC E4 BC 45 67 A3 9B 65 A1 0E ED 1A 84 AD 49 87
A2 77 3F 11 A7 1B D1 7F 25 36 6C 6F D3 DF 25 D0
FB

When pressing IN-STOP key by SVC remocon, Red LED are
blinked alternatively. And then Automatically turn off. (Must
not AC power OFF during blinking)

Confirm whether is normal or not when between power
board's ac block and GND is impacted on 1.5kV(dc) or
2.2kV(dc) for one second

- 13 -

- 14 -

1) It is not discharged minutely from the module. 
2) Light does not come into the front LED. 

Plug in the power cord.

Yes

No

Connect the Cable.(SK100)

No

Is the fuse of PSU

normal?(F501)

Replace the Fuse.

Yes

No

Is it connected

that PSU and P1101 in

Main B/D?

Connect the Cable P1101.

Yes

No

After all cables connect is removed to PSU, the
AC voltage marking is authorized on manual.
When ST-BY 5V is not operated, replace PSU.

Is inserted a plugged

in power cord?

Is the Line Filter and

PSU connected?

- 15 -

Yes

Yes

No

No

Replace the Power board.

Check the LCD Module.

Reconnect Panel link cable.
(P401 or P406 or P401)

Replace the Q1104.

No

Yes

No

No

Does minute discharge

at Module?

Is the link

cable normal?

Is the Q1104’s

output normal?

Is the inverter

/ VaVs on?

1) No OSD and image occur at screen. 
2) It maintains the condition where the front LED is blue.

Is output the normality
Low/High voltage except
Stand-by 5V?

Yes

No

No

Yes

Check the Power.

Cable inserts well.

Change the IC(IC100).

Yes

No

No

Check the Tuner.

Is video

output of the Tuner

normal?(Check TU500

_Pin15)

Is the LVDS cable

connected well?

Is the input

voltage normal?

(Check Pin4)

Is the I2C communication

Normal?(Check Pin10, Pin11)

- 16 -

Yes

No

Check the input source.

Same as Block A.

Same as Block A.

No

Check the IC700.

No

Yes

Is video

input of SCART Jack

normal?(Check JK601

_Pin20)

Check the input source.

Is video

input of the SCART Jack

normal?(Check JK601_

Pin7,11,15)

No

Is waveform

of Switching IC normal?

(Check IC700_Pin11,

12,13)

Yes

No

Same as Block A.

Is video input

of RCA Jack normal?

(Check R704)

Check the input source.

Yes

No

Same as Block A.

Is video input

of the Component Jack

normal?(Check R733,

734,735)

Check the input source.