LG 32LB9D (CHASSIS:LB73B) Service Manual ▷ View online
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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
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)
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)
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
2. AUDIO
(1) AUDIO ALL PATH
(2) Common Sound Out
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AT/NT
TUNER
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
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
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)
(3) TV RF No Sound
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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
OUT
I2S
I2S
I2SI 3
I2SO 1
SC 2
MCLK
MCLK
SPDIF OUT
Optical
Coaxial
1
2
3
4
Follow the procedure of
ì COMMON SOUND OUTî
Check Tuner (TU600)
5V (3,5,9,17 pin), IF_N(15 pin), IF_P(14pin)
Check Antenna Cable
Check X260 (IC101)
(4) DTV No Sound
- 24 -
EXT1/2
AT/NT
TUNER
X260
TP A
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
OUT
I2S
I2S
I2SI 3
I2SO 1
SC 2
MCLK
MCLK
SPDIF OUT
Optical
Coaxial
HDMI 1/2/3
Check MSP4450K (IC508) outputs
R5039(SCLK), R5040(LRCLK), R5043(DATA)
1
2
3
5
6
7
Follow the procedure of
ì COMMON SOUND OUTî
Check MSP4450K (IC508) Inputs
R5041(AV1_R), 5042(AV1_L),
R5045(AV2_R), R5046(AV2_L),
R5048(CMP1_R),R5049(CMP1_L),
R5051(CMP2_R),5052(CMP2_L),
R5055(RGB_R), R5058(RGB_L)
R5041(AV1_R), 5042(AV1_L),
R5045(AV2_R), R5046(AV2_L),
R5048(CMP1_R),R5049(CMP1_L),
R5051(CMP2_R),5052(CMP2_L),
R5055(RGB_R), R5058(RGB_L)
Check AV/COMPONENT/RGB Cable
Check X260 (IC101) Inputs
R175(SCLK), R176(LRCLK), R177(DATA)
Check MSP4450K (IC508) X-tal Input
X-tal Input (71,72pin)
Check MSP4450K (IC508) Power
4
(5) AV / Component / RGB / No Sound
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