LG LH-T753TB User manual

DVD/CD RECEIVER
SERVICE MANUAL
MODEL : LH-T753TB
(LH-T753, LHS-75TBC,
LHS-75TBS, LHS-75TBW)
MODEL : LH-T753TB (LH-T753, LHS-75TBC, LHS-75TBS, LHS-75TBW)SERVICE MANUAL

2-6 2-7
BLOCK DIAGRAM
Audio s/w
Bu 4052
ADC
CS 5340
Fs = 48kHz
Fx
DIT
CS 8406
(slave)
PS 9818
(PWM)
Video S/W
NJM 2279
out
(CVBS-S/W)
+
Slide
S/W Video
S/W
NJM2279
(Y-S/W)
USB Controller
ALC
BA 3308 CS 5340 ADC
DVD BLOCK
(ES 6698)
Mic Volume : OSD CTL
MIC1
MIC2
Optical
Tuner
AV1
AV2
(option)
Monitor Out
S-AV
Component
Scart
(option)
USB Port
MIC
7V
Wireless
L
R
V
L
R
V
G
B
R
L
R
L
R
G
B
R
8
16
V
SW1, SW2,MUTE1
(A)
Pb(R) ,Pr(R)
CTL-A/B(B)
VIDEO-SW
(A)
Tuner-L/R
AV1-L/R
AV2-L/R
SCART-L/R
AV1-CVBS
AV2-CVBS
Monitor out
SCART-CVBS out
C
Y
SCART-ID
SCART-FB
/RST-AD
AD-DATA
AD-BCK
AD-LRCK
(A)
SPDI
F12.288MHz
LRCK
BCK
ADAT 0,1,2,3
(FL/R,RL/R,C/SW
)
MUTE
TR Mute
/RST-AD(A)
Mixing
ALRCK,ABCK
MCLK,AMDAT
SPDIF
8406_SDI,8406_SD
O
8406_CLK,8406_CE
8406_RST,8406_IN
T
H/P
Y(G)
YYY
C
DVD-CVBS
CVB
S
(A)(T_CE,T_DO,T_DI,T_CLK,T_RDS_DATA,T_RDS,CLK)
(A)
AUDIO MICOM
LC876B48
(PIN MAP )
SS
TOPTION
FRONT
STA510A
AMP IC
MIC1_DET(A)
MIC2_DET(A)
(A) HP_DET
AM PDN
TH_W
FAN1
FAN2
(A) FAN1_CTL
FAN2_CTL
OPTION

2-8 2-9
SCHEMATIC DIAGRAMS
1 POWER SCHEMATIC DIAGRAM_1
A B C D E F G H I J K L M N O P Q R ST

2-10 2-11
2 POWER SCHEMATIC DIAGRAM_2
A B C D E F G H I J K L M N O P Q R ST

2-12 2-13
3 MICOM SCHEMATIC DIAGRAM
A B C D E F G H I J K L M N O P Q R ST

2-14 2-15
4 FRONT SCHEMATIC DIAGRAM
A B C D E F G H I J K L M N O P Q R ST

2-16 2-17
5 DSP&AMP SCHEMATIC DIAGRAM
A B C D E F G H I J K L M N O P Q R ST

2-18 2-19
6 I/O SCHEMATIC DIAGRAM
A B C D E F G H I J K L M N O P Q R ST

2-20 2-21
7 MAIN MIC SCHEMATIC DIAGRAM
A B C D E F G H I J K L M N O P Q R ST

A B C D E F G H I J K L M N O P Q R ST
3-22 3-23
DVD PART SCHEMATIC DIAGRAMS
1. DVD MPEG & DSP SCHEMATIC DIAGRAM

A B C D E F G H I J K L M N O P Q R ST
3-24 3-25
2. RF & SERVO SCHEMATIC DIAGRAM

3. FRONT MIC SCHEMATIC DIAGRAM
A B C D E F G H I J K L M N O P Q R ST
3-26 3-27

3-28 3-29
4. USB CONTRO ER SCHEMATIC DIAGRAM
A B C D E F G H I J K L M N O P Q R ST

5. AMP SCHEMATIC DIAGRAM ( 5TOO )
A B C D E F G H I J K L M N O P Q R ST
3-30 3-31

6. AMP SCHEMATIC DIAGRAM ( 7TOO )
A B C D E F G H I J K L M N O P Q R ST
3-32 3-33