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- 21 -

Symptom : T V set out of  ord er on po wers

Check X300 ( 24MHz)

Norm al?

Re-do wnloa d 

MTV416GMF (IC309 ) 

Norm al?

YES

NO

Replace  MTV416GMF (IC309 )

and Re-do wnload

Check  SI3865(Q702) 2,3pin 5V

Normal? 

Replace  Power board

Normal.

Check  P702 all input  voltage

Normal ?

YES

Check SI3865 (Q1901

,Q1902,Q1903)  2,3pin  3.3V

Normal? 

YES

Check  SI3865(Q702) 5pin 3.3V

Norm al? 

Check SI3865 (Q1901,Q1902

, Q1903 )  5pin 3.3V Normal? 

NO

NO

NO

Check P702   wafers  & connectors.

Normal ?

YES

Check  P701 #3,8Pin 5V

Normal ?

YES

Replace  po wer b oard.

NO

NO

Replace  SI3865(Q702)

YES

Replace SI3865(Q1901,Q1902,Q1903 )

YES

NO

YES

Symptom :  No booting

Check X300 ( 24MHz)

Norm al?

Re-do wnloa d 

MTV416GMF (IC309 ) 

Norm al?

YES

Replace  MTV416GMF (IC309 )

and Re-do wnload

Check  SI3865(Q702) 2,3pin 5V

Norm al? 

Check SI3865 (Q1901,Q1902

,Q1903)  2,3pin  3.3V Normal?

YES

Check  SI3865(Q702) 5pin 3.3V

Normal? 

Check SI3865 (Q1901,Q1902,

 Q1903 )  5pin 3.3V Normal? 

NO

NO

Replace  SI3865(Q702)

YES

Replace  SI3865(Q1901,Q1902,Q1903 )

YES

NO

YES

Check SI4800 ( Q315)1,2,3Pin 
1.9V Normal?

Replace  SI4800( Q315) 

Replace  SC2621(IC304) 

YES

NO

NO

Check  between FB1714 and 

C345 1.2V Normal?

Replace  SI4800( Q300,Q301) 

Replace  SC2621(IC304) 

NO

NO

NO

- 22 -

EXT1/2

AT/NT

TUNER

LGDT

3303

X260

TP A

HDMI 1/2/3

TP C

RGB

COMP 1/2

SIF

SIF IN 1

NTP

3000

SIF IN 2

I2S IN 1

I2S IN 2

I2S OUT 1

SPDIF OUT 

CS8416

I2S

I2S

I2S

I2S

S/PDIF

SPDIF

L/R

L/R

L/R

L/R

ANT/Cable

VSB TP

MSP4450K

MNT 
OUT

I2S

I2S

I2SI 3

I2SO 1

SC 2

MCLK

MCLK

SPDIF OUT

Optical

Coaxial

Check N TP3000 (IC505) Power

Check N TP3000 (IC505) Inputs pi ns

#17(DATA), #18(LRCLK), #19(SCLK), #6(MCLK)

1

2

3

4

5

6

7

Check X260 (IC101) Output

R153(SCLK), R154(LRCL K), R155(DATA), R156(MCLK)

Check N TP3000 (IC505) Output

L510,L 511(Left) /  L512,L 513(Right)

Check  Speaker ou tput w afer

P502(Left), P501(Right)

Check N TP3000 (IC505) Output

L515,L 516(Left)   L517,L5 18(Right)

Check Spe aker

All Source Speaker Out

Check M SP4450K (IC508) Output

R5062 (Left), R5063 (Right)

1

2

3

4

If DTV or  HDMI  input

Check X260 (IC101) Output
R153(SCLK), R154(LRCL K), R155(DATA)
Check M SP4450K (IC508) Input 
R5059(SCLK) R5060(LRCLK), R5061(DATA)

Check  MNT Output Jack (J704)

Monitor L,R Out

Check M SP4450K (IC508)  Power

5

Check M SP4450K (IC508)  X-tal Inpu t

X-tal Input (71, 72pin) : 18.432MHz

6

If ATV, AV, Component,  RGB  i nput

Check M SP4450K (IC508) Input 
C5016(ATV_SIF), R5041(AV1_R), R5042(AV1_L),
R5045(AV2_R), R5046(AV2_L), R5048(CMP1_R), 
R5049(CMP1_L), R5051(CMP2_R), R5052(CMP2_L), 
R5055(RGB_R), R5058(RGB_L)

Check C S8416(IC501)  Input 

C5006 (X260_SPDIF) or

C5005 (HDMI_SPDIF)

Check C S8416(IC501)  Output 

R590 (8416_SPDIF_out)

1

2

3

4

Check C S8416 (IC501) Power

Check S PDIF Jack

P500 (Optical SPD IF Jack) and 

P501 (Coaxial S PDIF Jac k)

Digital Audio Out

- 23 -

AT/NT

TUNER

LGDT

3303

X260

TP A

HDMI 1/2/3

TP C

SIF

SIF IN 1

NTP

3000

SIF IN 2

I2S IN 1

I2S IN 2

I2S OUT 1

SPDIF OUT 

CS8416

I2S

I2S

I2S

I2S

S/PDIF

SPDIF

ANT/Cable

VSB TP

MSP4450K

I2S

I2S

I2SI 3

I2SO 1

MCLK

MCLK

SPDIF OUT

Optical

Coaxial

EXT1/2

RGB

COMP 1/2

SIF

L/R

L/R

L/R

L/R

MSP4450K

MNT 
OUT

I2SO 1

SC 2

Check SI F lines

C6025, C6026

Check M SP4450K (IC508) inputs

C5016, #67pi n

1

2

3

4

5

6

Fol lo w the pr ocedur e of

"COMMON SOUND OUT"

7

8

Check T uner (TU600)

5V (3,5,9,17 pi n), SIF(18 pin)

Check A nten na Cable

Check X260 ( IC101) Intputs

R175(SCLK),  R176(LRCLK),  R177(DATA)

Check M SP4450K (IC508) Power

Check M SP4450K (IC508) outpu ts

R5039(SCLK), R5040(LRCLK), R5043(DATA)

- 24 -

EXT1/2

AT/NT

TUNER

LGDT

3303

X260

TP A

HDMI 1/2/3

TP C

RGB

COMP 1/2

SIF

SIF IN 1

NTP

3000

SIF IN 2

I2S IN 1

I2S IN 2

I2S OUT 1

SPDIF 

CS8416

I2S

I2S

I2S

I2S

S/PDIF

SPDIF

L/R

L/R

L/R

L/R

ANT/Cable

VSB TP

MSP4450K

MNT 
OUT

I2S

I2S

I2SI 3

I2SO 1

SC 2

MCLK

MCLK

SPDIF OUT

Optical

Coaxial

Check LG DT3303 (IC604) inputs

IF_N(#8 pi n, C645),  IF_P(#7 pi n, C644)

Check LG DT3303 (IC604) outpu ts

VSB DATA(AR651, AR656), VSB_CLK(R658)

VSB ERROR, VALID, SOP (AR657)

1

2

3

4

5

6

Fol lo w the pr ocedur e of  

" COMMON SOUND OUT"

Check T uner (TU600)

5V (3,5,9,17 pi n), IF_N(15 pi n), IF_P(14pin )

Check A nten na Cable

Check X260 ( IC101)