LG LH-T550 Manual de usuario
DVD/CD & KARAOKE RECEIVER
SERVICE MANUAL
MODELS : LH-T550,1,2,3SB [ Speaker : LHS-55SBC, LHS-55SBS, LHS-55SBW ]
MODELS : LH-T550X,TK550X [ Speaker : LHS-55SBC, LHS-55SBS, LHS-55SBW ]
MODELS : LH-T751,3SB [ Speaker : LHS-75SBC, LHS-75SBS, LHS-75SBW ]
LH-T550,1,2,3SB/LH-T550X,TK550XLH-T751,3SB
MODELS : LH-T550,1,2,3SB/LH-T550X,TK550X/LH-T751,3SBSERVICE MANUAL
P/NO : 3829R P017H
APRIL, 2005
Printed in Korea
2-4 2-5
WIRING DIAGRAM
WIRELESS OPTICAL
IN SCART
JACK OPTION
SW AV1,2
COMPONENT
MONITOR OUT
S-VIDEO OUT
TUNER
SPEAKER TERMINAL
MAIN PCB AMP PCB
SMPS PCB
MD
FRONT
PCB
FRONT
PCB
MIC&USB PCB VFD
H/P JACK
USB JACK
MIC
JACK
MIC
JACK CN001 PN005
CN350
PN801
6PIN
5PIN
23PIN 11PIN 24PIN 23PIN
14PIN 14PIN
30PIN
PN103 PN104
PN001
PN002
PN902 PN303
PDM01 PDM03
PN105 PN302
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& 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
Este manual sirve para los siguientes modelos
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