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MCV903 Series
LG MCV903 Series Service Manual
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3-33
3-34
B
U
9543KV
RF+ SE
RV
O DSP
BU9543KV
RF+ SERVO DSP
P/UP
M
DECK MECHANISM
IP9010
MOTOR IC
IP9010
MOTOR IC
74LC157
MUX
74LC157
MUX
A,B,C,D,E,F
PD
LD
I2C
R/W
BUSY
SUBSYQ
RESET
I2S
I2S
USB CON
D
SDRAM
SDRAM
FLASH
FLASH
A
K
5358
ADC
AK5358
ADC
I2S CL
K
ADC_
DOUT
I2S_MC
K
TUNER
TUNER
AMP
POTABLE I
N
POTABLE IN
DECK
DECK
SLED
,F
,T
SPINDLE
LOA
D
TDO
SPDO
FDO
MD SWITCH
12MHZ
16.93MHZ
FM
AM
MLC
3890
MCS LOGIC
MLC3890
MCS LOGIC
RESET
POWER
I/F
5V
12V
PWM
I2S
SWITCH
4052
SWITCH
4052
OP
AMP
OPAMP
L/R
L/R
L/R
L/R
DATA
/Address LIN
E
MICOM BLOCK
3.3V
I2S_MC
K
IPOD_DET
IPOD_R
EADY
IPOD_TX
IPOD CON1
IPOD CON2
L/R
Copyright ©
2008 LG Electronics
.
Inc.
All right reserved.
Only for tr
aining and ser
vice purposes
LGE Internal Use Only
2.
CD BLOCK DIA
GRAM
51
53
Table of Contents
Section 1. General
3
Servicing Precautions
3
Notes Regarding Handling of the Pick-Up
3
Notes Regarding Compact Disc Player Repairs
4
Esd Precautions
5
Location of Users Controls
6
Front / Back Panel
6
Remote Control
7
Specifications
8
Section 2. Exploded Views
12
Cabinet and Main Frame Section
12
Tape Deck Mechanism Exploded View
13
Tape Deck Mechanism (A/R & A/S : Right A/R Deck)
13
CD Mechanism Exploded View
15
Speaker Exploded View
16
Packing Accessory View
20
Optional Parts
20
Section 3. Audio Electrical Part
22
Micom Part Check I
22
Fld Display Check
25
Troubleshooting
25
Tape Play Part Check
30
Tape Rec Part Check
31
Pwm Modulation Part Check
35
Power Amp Part Check
38
INTERNAL BLOCK DIAGRAM of Ics
40
Pin Configuration
41
System Block Diagram
45
Functional Block Diagram
46
Wiring Diagram
50
Main & Front Block Diagram
51
Smps Schematic Diagram
53
Interface Schematic Diagram
56
Deck Schematic Diagram
57
Woofer Amp Schematic Diagram
59
Front Schematic Diagram
60
Printed Circuit Board Diagrams
65
Smps P.C. Board Diagram
65
Front P.C. Board Diagram
70
Section 4. CD Electrical Part
74
Usb Function
75
Waveforms of Major Check Point
76
Audio Path
76
Dsp Schematic Diagram
78
Rf Servo Schematic Diagram
79
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LG MCV903 Series Specifications
General
Brand
LG
Model
MCV903 Series
Category
Stereo System
Language
English
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