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MCD23
LG MCD23 User Manual
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3-17
Copyright ©
2008 LG Electronics
.
Inc.
All right reser
ved.
Only for tr
aining and ser
vice purposes
LGE Internal Use Only
2.
CD BLOCK DIA
GRAM
B
U
9
543KV
RF+
SE
R
V
O
DSP
BU9543KV
RF+ SERVO DSP
P/UP
M
DECK MECHANISM
IP9
010
MOTOR
IC
IP9010
MOTOR IC
74LC157
MUX
74LC157
MUX
A,B,C,D,E,F
PD
LD
I2C
R/W
BUSY
SUBSYQ
RESE
T
I2
S
I2S
USB CON
D
¡
SDRAM
SDRAM
FLASH
FLASH
A
K
5358
ADC
AK5358
ADC
I2S CL
K
ADC_DO
UT
I2S_MCK
TUNER
TUNER
AMP
POTABLE
I
N
POTABLE IN
DECK
DECK
SLED
,F
,T
SPIN
DLE
LOA
D
TDO
SLDO
SPDO
FDO
MD SWITCH
12MHZ
16.93MH
Z
FM
AM
MLC
389
0
MCS
LOGIC
MLC3890
MCS LOGIC
RESE
T
POWER
I/F
5V
12V
PWM
I2
S
SWITCH
4052
SWITCH
4052
OP
AMP
OP
AMP
L/R
L/R
L/R
L/R
DATA
/Address LIN
E
MICOM BLOCK
3.3
V
I2S_MC
K
IPOD_D
ET
IPOD_RE
AD
Y
IPOD_T
X
IPOD CON1
IPOD CON2
L/R
29
31
Table of Contents
Section 1. General
3
Notes Regarding Handling of the Pick-Up
3
Servicing Precautions
3
Notes Regarding Compact Disc Player Repairs
4
Safety Precautions
5
Service Information for Eeprom
6
Program Download Guide
7
Specifications
9
Section 2. Exploded Views
10
Cabinet and Main Frame Section
10
Mechanism Deck Exploded View
11
Speaker Exploded View
12
Packing Accessory View
13
Section 3. Electrical Part
14
Audio Electrical Troubleshooting Guide
14
Vkk Check
15
Micom Part Check I
15
Pwm Modulation Part Check
18
Power Amp Part Check
19
Tape Play Part Check
21
Tape Rec Part Check
22
CD Electrical Troubleshooting Guide
23
Usb Function
24
Waveforms of Major Check Point
25
Audio Path
26
Wiring Diagram
28
Main Block Diagram
29
CD Block Diagram
30
Smps(Power) Circuit Diagram
32
Main Circuit Diagram
33
Servo Circuit Diagram
34
Dsp Circuit Diagram
35
Adc Circuit Diagram
36
Front Circuit Diagram
37
Amp Circuit Diagram
39
Usb Circuit Diagram
40
MIC Circuit Diagram
41
Key Circuit Diagram
42
INTERNAL BLOCK DIAGRAM of Ics
44
Pin Assignment
44
Block Diagram
45
Pin Description
45
Pin Configuration
50
Pin / Function
51
Typical System Block Diagram
53
Functional Block Diagram
54
Circuit Voltage Chart
60
Printed Circuit Board Diagrams
62
Smps P.C. Board Diagram
66
Front P.C. Board Diagram
67
Section 4. Disassembly and Assembly of Mechanism Deck
70
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LG MCD23 Specifications
General
Brand
LG
Model
MCD23
Category
Stereo System
Language
English
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