Panasonic SC-AK320 User Manual

: CD-DA SIGNAL LINE
IC703
AN8739SBE2
FOCUS COIL/
TRACKING COIL/
TRAVERSE MOTOR/
SPINDLE MOTOR DRIVE
R701
4.7
C
C
C
C
C
CN701
Q701
Q701
2SA1037AKSTX
LASER POWER DRIVE
38
37
35
36
33
29
30
GND
GND
LASER DIODE
11
12
10
6
8
5
4
9
2
3
F-
T+
T-
LPD
VREF
NA
NB
GND
LD GND
LD
PDE
PDF
VCC
28
C701
6.3V33
R750
4.7
C714
6.3V100
C713
0.1
C750
0.1
C751
0.1
C702
0.1
IC701
AN8885SBE1
SERVO AMP
TEN FEN FEOUT FBAL TBAL TEOUT
CEA
RF
LPD
LD
RFIN
PDF
PDE PDB PDA
VREF ENV OFTR /RFDET
GND
LDON
BDO
VCC
CSBRT
NC PDOWN NC NC
C706
2700P
C707
0.027
C704
0.1
C703
6.3V100
C712
0.1
C711
0.1
R708
22K
R707
39K
C749
2200P
R744
120K
C747
180P
R706
1K
R704
1K
R702
10K
R705
150K
C710
120P
C742
0.027
M701
TRV MOTOR
C736
0.1
M702
SP MOTOR
C737
0.1
R731
6.8K
R728
3.9K
R749
4.7K
C739
1500P
R729
3.9K
C738
0.01
R723
6.8K
C752
1000P
R727
3.9K
C715
2700P
R725
390
R715
1K
R724
18K
R735
100
C735
0.1
C734
10V220
R736
100
F+
SCHEMATIC DIAGRAM -1
CD SERVO CIRCUIT
OPTICAL
PICKUP CIRCUIT
: +B SIGNAL LINE
M
M
IC703
VCC
NC NC
RSTIN
IN3 IN4
VREF
NC
/RST
GND
GND
PVCC2
PGND2
D4+
D4-
D3+
D3-
PGND1 PVCC1 NC D2+ D2- D1+ D1- IN1 NC PC2 NC IN2 NC
3456
22 23 24
7 12
25 26
21
20
8
19
9
18
10
17
1112
27 2816
13
15
14
30
29
12
11
10
2
4
6
8
9
7
5
3
1
13
14
15
16
12
11
10
2
4
6
8
9
7
5
3
1
13
14
15
16
GND
VCC
AIN
BIN
VREF
NAOUT
GND
NBOUT
1
2
3
4
5
6
7
8
1 2 3 4
23242526
5
22
6
21
7
20
8
19
9
18
10
17
11
16
12
15
13 14
2728
<3.2V>
((0V))
<2.7V>
((2.3V))
<0.9V>
((2V))
<1.6V>
((0V))
<1.6V>
((0V))
<1.6V>
((0V))
<1.6V>
((0V))
<1.6V>
((0V))
<1.6V>
((0V))
<1.6V>
((0V))
<0V>
((0V))
<0V>
((0V))
<0V>
((0V))
<0V>
((0V))
<1.6V>
((0V))
<0V>
((3.2V))
<0V>
((0V))
<0V> ((3.1V)) <0V> ((0V)) <1.6V> ((0V)) <1.9V> ((0V)) <0.7V> ((0V)) <0.9V> ((1.4V)) <2.7V> ((2.3V)) <0V> ((0.2V)) <1.6V> ((0V)) <1.6V> ((0V)) <1.6V> ((0V)) <1.6V> ((0V)) <3.2V> ((0V)) <0V> ((0V))
<3.3V>
((0V))
<3.3V>
((3.5V))
<3.7V>
((3.5V))
<3.7V>
((4.1V))
<1.6V>
((0V))
<1.6V>
((0V))
<1.6V>
((0V))
<1.6V>
((0V))
<0V>
((0V))
<0V>
((0V))
<0V>
((0V))
<0V>
((0V))
<0V>
((0V))
<0V>
((0V))
<0V> ((0V)) <1.6V> ((0V)) <1.6V> ((0V)) <1.6V> ((0V)) <7.3V> ((0V)) <7.3V> ((0V)) <7.3V> ((0V)) <0V> ((0V)) <0V> ((0V)) <0V> ((0V)) <3.3V> ((0V)) <3.3V> ((3.5V)) <3.3V> ((3V)) <3.3V> ((3V)) <3.3V> ((3V))
<0V>
((0V))

Panasonic SC-AK320 Specifications

General

Type	Mini Hi-Fi System
Speaker Configuration	2.0
Bluetooth	No
CD Player	Yes
USB Playback	Yes
FM Radio	Yes
Number of Discs	1
Tuner Bands	FM

Summary

Optical Pickup Circuit

CD Servo Circuit

IC701 AN8885SBE1 Servo Amplifier

Servo amplifier IC for CD playback control and signal processing.

IC703 AN8739SBE2 Spindle Motor Drive

IC for driving spindle and traverse motors in CD playback.

IC702 MN662790RSC Digital Signal Processor

Digital signal processor for CD audio, D/A conversion, and filtering.

Tuner/Main Circuit Components

IC101 LA1833NMNTLM FM/AM IF Amplifier

IC for FM/AM intermediate frequency amplification and detection.

IC102 LC72131MDTRM PLL Synthesizer

PLL frequency synthesizer for tuning and signal generation.

Main Circuit Processing

IC300 C2B86F000295 Audio Sound Processor

Audio sound processor for various audio functions and signal control.

Main Circuit Transistor Controls

Transistors managing AGC, muting, and interface switching functions.

Main Circuit HPF Amplifiers

High-pass filter amplifier switches in the main circuit.

Panel Circuit Overview

Panel Circuit I/O Expander and Controls

I/O expander IC and front panel control switches for user interface.

Panel Circuit Audio Processor IC600

Audio sound processor for panel functions and display control.

Panel Circuit Interface Switches

Switches for controlling various functions like sync, deck, and LED status.

Deck Circuit Components

IC1001 AN7348STA-E1 Playback/Record Amplifier

Amplifier IC for playback EQ, record, ALC, and TPS functions.

IC1004 BA7755A Record/Playback Select

IC for selecting between record and playback modes.

IC1002 BU2090AF-E2 Deck Circuit I/O Expander

I/O expander IC managing various deck control signals.

Deck Circuit Control Transistors

Transistors controlling deck muting, motor operation, and plunger functions.

Power Circuit Overview

IC500 R5N3N3H2-P Power Regulator

Power regulator IC providing stable voltage supplies to various circuits.

IC501 TA7291P Motor Drive IC

IC for driving various motors in the device.

Speaker Terminal Circuit Components

Sub Transformer Circuit

CD Detect Circuit

CD Loading Circuit