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- 17 -

Check EDID EEPROM
1. IC102 VDD Check
-> pin8 : 5V
2. DDC IIC line check
-> IC102 pin 6, 5

Check RGB Jack
1. RGB LINK check
->R189 or P101 pin10

Check Video, Audio

Check sink signal
1. H-sync : P101 pin13
2. V-sync : P101 pin14

No problem : case 1

No problem:  case 2

Check App S/W
If App S/W OK then replace IC102.

NG

NG

Check App S/W.
If App S/W OK then replace IC100.

Check Video & sink signal
1. Red : P101 pin1 and C501
2. Green : P101 pin2 and C502
3. Blue : P101 pin3 and C503

NG

Check App S/W.
If App S/W OK then replace IC100.

NG

Check 74HC14D IC103
1. H-sync : pin4
2. V-sync : pin8
3. If problem with IC103 then replace IC103

No problem
or No sound

Check EDID
1. Read EDID data

EDID download
and recheck

No problem

No problem

Check video signal
1. Y : JK102 pin3A and C509
2. Pb : JK102 pin5B and C512
3. Pr : JK102 pin5C and C515

Check Component Jack.
1. COMP LINK check
->R167 or JK102 pinA4

Check Video, Audio

Check Audio signal
1. R : JK102 pin3E and C614
2. L : JK102 pin5D and C613

Audio NG

Check App S/W.
If App S/W OK then replace IC100.

No problem

Check the input source of Equipment.

NG

NG

Video NG

Check App S/W.
If App S/W OK then
Replace IC100.

No problem

- 18 -

Check video signal
1. CVBS : JK103 pin2 and C517

Check AV3 Jack.
1. AV3 LINK check
->R187 or JK103 pin3

Check Video, Audio

Check Audio signal
1. R : JK103 pin7 and C616
2. L : JK102 pin8 and C615

Audio NG

Check App S/W.
If App S/W OK then replace IC100.

No problem

Check the input source of Equipment.

NG

NG

Video NG

Check App S/W.
If App S/W OK then
replace IC100.

No problem

Check EDID.
1. Read EDID data.

Check EDID EEPROM
1. IC201~4 VDD Check
-> pin8:5V
2. DDC IIC lin check
-> IC201~4 pin6,5

Check HDMI HPD Output
1. HDMI JK201, 202, 203 Pin19

Check TMDS signal.
1. JK201~3, JK204 pin1~12

Check App S/W.
If App S/W OK then replace IC100.

No problem

Check App S/W.
If App S/W OK then replace IC201~4.

NG

Check HDMI 5V_DET input
1. HDMI JK201, 202, 203 Pin20

Check HDMI source.
If OK then replace HDMI JACK.

No problem

No problem
or No sound

Check TMDS 351 IC(IC200).
1. VDD check -> pin6,12,19,25,40,46,55,61:3.3V
2. HDMI SEL check -> pin33,32

No problem : case HDMI1~3

Check TMDS351 TMDS signal check.
1. Pin17~27

No problem

Check App S/W.
If App S/W OK then replace IC100.

No problem

NG

No problem

case HDMI4

Video NG

Check App S/W.
If App S/W OK then replace IC200.

NG

EDID download
and re-check

No problem

- 19 -

1) LED is green.
2) Screen display but sound is not output.

All input(mode) is no sound?

Is the speaker on it menu?
1. Menu > Audio > TV Speaker ON/OFF.

Is the speaker Cable normal?
1. Isn’t damage in the Speaker Cable?
2. Is the Speaker cable connect well form
Main B/D o Speaker.

Only HDMI is No sound?

Download the EDID data.

No

Yes

IC601(Audio AMP) operates Normal?
1. Check 16V input Voltage. (IC600 pin49~52)
2. Check 1.8V input Voltage. (IC600 pin12, 13, 16)
3. Check the IIC communication. (SDA/SCL : R619, R620)
4. Check the Audio Signal is Normal. (SPK_L/R : L603, L604)

Yes

Replace Main B/D.

Yes

Yes

Set on speaker in menu.
(TV Speaker OFF -> ON)

No

Change or Reconnect
the Speaker Cable.

No

Replace Audio
AMP IC(IC600).

No

Yes

Only RF is no sound?

Check the Tuner IN/OUT
SIF : R317, SECAM-L : R326

Yes

No

No

Only AV/component/PC
input is no sound?

Replace Main B/D.

Check the Input Sound IN/OUT
AV1 (R : JK100 pin2 and C679

L : JK100 pin6 and C692)

AV2 (R : JK101 pin2 and C690

L : JK101 pin2 and C690)

AV3 (R : JK103 pin7 and C616

L : JK103 pin8 and C615)

PC

(PC_LIN : 635, PC_LIN : R634)

Component

(R: JK102 pin3E and C614

L : JK102 pin5D and C613)

No

Yes

- 20 -

TS[0:7]

CVBS, 

L/R

DDR2 SDRAM

(64MByte)

HYNIX

IC700

NAND Flash

HYNIX

IC404

LVDS TMDS 

ODD[10 

bit]

SPDIF_OUT

Digital amp

(NTP3000A)

IC600

RS-232C

TMDS351PAG

IC200

YPbPr

 L/R

RGB, CVBS

CVBS

DTV/MNT 

OUT

I2S

24LC512

512Kbit

IC901

RGB,PC L/R

Tuner 

(TDFV-G135D1)

TU300

TMDS[0:7]

74LVC541A(PW)

Buffer

IC400

CI Slot

 (P400)

74LVC245A

Bi-Buffer

IC402

DATA[0:7]

74LCX244MTC

Buffer

IC403,405,406

Address[0:14]

,CTRL signals

TMDS[0:7]

CVBS

Tuner V out

NLASB3157

IC500

LVDS TMDS 

EVN[10 

bit]

LVDS TMDS 

ODD[10 

bit]

Host Address[1:16]

Host Data[0:15]

LPF

DDR2 Data[0:15]

DDR2 SDRAM

(64MByte)

HYNIX

IC701

DDR2 Data[16:31]

DDR2 Address[0:12]

MICOM

WT61P8

IC802

MAX3232CDR

IC104

NLASB3157

IC101

AT24C16AN

16K

IC801

MSP4458G

IC603

SIF,SCART1,2 L/R,AM Audio

Switching LR

I2S

TV out, DTV out LR

TPS2042DBRG4

USB Power 

IC902

USB 

Power

500mA

FLI10620H