Panasonic sa ak270eb

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ORDER NO. MD08030030E

Service Manual

@fififi

DIGITAL AUDIO

a
:1

Remote SB-AK27O

SA-AK270
Control

8 B-AK270

CD Stereo System

SA-AK270EB
SA-AK270EG

Colour
(K)... Black Type

Notes: This models CD mechanism changer unit is CRS1. Please refer to the original Service Manual

(Order No. M00509368CO) for this mechanism.

Specifications

I AMPLIFIER SECTION

RMS output power stereo mode

THD 10%, both channels driven

1 kHz

Total RMS stereo mode power

I FM/AM TUNER, TERMINALS SECTION
Preset station

125 W per channel (3 S2)
250 W

FM 25 stations
AM 15 stations
Frequency Modulation (FM)

Frequency range

87.50 to 108.00 MHz (50 kHz steps)
Antenna terminal(s) 75 Q (unbalanced)
Amplitude Modulation (AM)
Frequency range 522 to 1629 kHz (9 kHz step)
Music Port (front) jack
Sensitivity 100 mV, 4.0 kg
Terminal Stereo, 3.5 mm jack

Headphone jack

Terminal Stereo, 3.5 mm jack
Output impedance 32 £2 (Max)
I CASSETTE DECK SECTION

Type 1 way

Track system 4 track, 2 channel

Heads

Panasonici

Record/playback Solid permalloy head
Erasure Double gap ferrite head
Motor DC servo motor

AC bias 100 kHz
AC erase 100 kHz
4.8 cm/s

Recording system
Erase system
Tape speed
Overall frequency response (+3, -6 dB) at DECK OUT
NORMAL 35 Hz to 14 kHz
S/N ratio 50 dB (A weighted)
Wow and flutter 0.18 % (WRMS)
Fast forward and rewind time
Approx. 120 seconds with 0-60 cassette tape

I DISC SECTION
Disc played [8 cm or 12 cm]
(1) CD-Audio (CD-DA)
(2) CD-R/RW (CD-DA, MPS formatted disc)
(3) MP3
' MPEG-1 Layer 3, MPEG-2 Layer 3
Pick up

780 nm
Semiconductor laser

Wavelength
Beam Source
Audio output (Disc)

Number of channels 2 (FL, FR)

© 2008 Matsushita Electric Industrial Co. Ltd.. All
rights reserved. Unauthorized copying and
distribution is a violation of law.

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SA-AK270EB l SA-AK27DEG

I USB SECTION
USB Port

USB Standard

Media file format support
MP3 (.mp3)

USB device file system
FAT 12

FAT 16

FAT 32

USB port power

I GENERAL

Power supply

USB 2.0 full speed

500 mA (Max)

AC 230 to 240 V, 50HZ

Operating temperature range 0 to 40°C

Operating humidity range 35% to 80% RH (no condensation)

Power consumption in standby 0.4 W

mode

I SYSTEM

SC-AK270 (EB) Music center: SA-AK270 (EB)
Speaker: SB-AK270 (PL)

SC»AK270 (EG) Music center: SA-AK27O (EG)

Speaker: SB-AK27O (PL)

For information on speaker system, please refer to the original
Service Manual (Order No. MDOSOZOISCE) for SB-AK270PL-K.

Notes:

1.Specifications are subject to change without notice. Mass and
dimensions are approximate.

Power consumption 65 W 2.Tota| harmonic distortion is measured by the digital spectrum
Dimensions (W x H x D) 250 x 331 x 342 mm analyzer.
Mass 4.7 kg

A WARNING

This service information is designed for experienced repair technicians only and is not designed for use by the general public

It does not contain warnings or cautions to advise non-technical individuals of potential dangers in attempting to service a product.
Products powered by electricity should be serviced or repaired only by experienced professional technicians. Any attempt to service
or repair the product or products dealt with in this service information by anyone else could result in serious injury or death

CONTENTS

Page

1 Safety Precautions ................................................................ 3
2 Prevention of Electro Static Discharge (ESD) to

Electrostatically Sensitive (ES) Devices ................................ 5

3 Handling Precautions For Traverse Unit ............................... 7

4 Precaution 01 Laser Diode----
5 About Lead Free Solder (PDF
6 Operation Procedures --------

7 New Features ---------------------------------------------------------------------- 14
8 Self diagnosis and special mode setting ............................. 15
9 Assembling and Disassembling .......................................... 25

10 Service Fixture and Tools

11 Service Positions

Page

12 Procedure for Checking Operation of Individual Parts of Deck
Mechanism Unit .......................................................... 51
13 Measurement And Adjustments ........................................... 52
14 Voltage Measurement and Waveform Chart ......................... 54

15 Wiring Connection Diagram
16 Block Diagram-

17 Notes 01 Schematic Diagram

18 Schematic Diagram ............................................................. 31
19 Printed Circuit Board ............................................... 95
20 Illustration of ICs, Transistors and Diodes ........................ 103

21 Terminal Function of Integrated Circuits
22 Exploded Views --
23 Replacement Parts List

104
107