32LB9D (CHASSIS:LB73B) - LG TV Service Manual (repair manual). Page 21

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EXT1/2

AT/NT

TUNER

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

TP

MSP4450K

MNT 
OUT

I2S

I2S

I2SI 3

I2SO 1

SC 2

MCLK

MCLK

SPDIF OUT

Optical

Coaxial

Check NTP3000 (IC505) Power

Check NTP3000 (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(LRCLK), R155(DATA), R156(MCLK)

Check N TP3000 (IC505) Output

L510,L511(Left) /  L512,L513(Right)

Check  Speaker ou tput w afer

P502(Left), P501(Right)

Check N TP3000 (IC505) Output

L515,L516(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(LRCLK), 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 CS8416(IC501)  Input 

C5006 (X260_SPDIF) or

C5005 (HDMI_SPDIF)

Check CS8416(IC501)  Output 

R590 (8416_SPDIF_out)

1

2

3

4

Check CS8416 (IC501) Power

Check S PDIF Jack

P500 (Optical SPD IF Jack) and 

P501 (Coaxial S PDIF Jac k)

Digital Audio Out