Panasonic SAAK22 - MINI HES W/CD-PLAYER Bedienungsanleitung

QAMPLIFIER SECTION

RMS power output

THD 10%, both channels driven

both channel driven

(E,EB) 80 W per channel (6 Ω)

(EG) 60 W per channel (6 Ω)

Input sensitivity

AUX 250 mV

Input Impedance

AUX 13 kΩ

QFM TUNER SECTION

Frequency range 87.50 - 108.00 MHz (50 kHz

steps)

Sensitivity 1.8 µV (IHF)

S/N 26 dB 1.5 µV

Antenna terminal(s) 75 Ω(unbalanced)

QAM TUNER SECTION

Frequency range 522 - 1629 kHz (9 kHz steps)

Sensitivity

S/N 20 dB (at 999 kHz) 560 µV/m

QCASSETTE DECK SECTION

Track system 4 track, 2 channel

reserved. Unauthorized copying and distribution is a

violation of law.

SA-AK22

Colour

(S)... Silver Type

Area

(E)... Europe

(EB)... Great Britain

(EG)... Germany and Italy

TAPE SECTION :

SG-2W MECHANISM SERIES

CD SECTION :

RAE0152Z-3 TRAVERSE DECK SERIES

Heads

Record/playback Solid permalloy head

Erasure Double gap ferrite head

Motor DC servo motor

Recording system AC bias 100 kHz

Erasing system AC erase 100 kHz

Tape speed 4.8 cm/s

Frequency response (+3 dB, -6 dB at DECK OUT)

NORMAL (TYPE I) 35 Hz - 14 kHz

S/N 50 dB (A weighted)

Wow and flutter 0.18% (WRMS)

Fast forward and rewind time Approx. 120 seconds with

C-60 cassette tape

QCD SECTION

Sampling frequency 44.1 kHz

Decoding 16 bit linear

Beam source/wave length Semiconductor laser/780 nm

Number of channels Stereo

Frequency response 20 Hz - 20 kHz (+1, -2 dB)

Wow and flutter Below measurable limit

Digital filter 8fs

D/A converter MASH (1 bit DAC)

CD Stereo System

Specifications

ORDER NO. MD0105096C2

QGENERAL

Power supply

(E,EG) AC 230-240V, 50 Hz

(EB) AC 230, 50 Hz

Power consumption 170 W

Power consumption in standby mode

0.4 W

Dimensions (W x H x D) 250 x 332 x 316 mm

Mass 8.2 kg

QSYSTEM

SC-AK22 (E) Music Center: SA-AK22 (E)

1 Before Repair and Adjustment 2

2 Protection Circuitry 2

3 Accessories 3

4 Handling Precautions For Traverse Deck 4

5 Precaution of Laser Diode 5

6 Caution for AC Mains Lead 6

7 Operation Procedures 7

8 Disassembly and Main Component Replacement Procedures

9 Self-Diagnostic Function 19

10 Description of Error Code 20

Speaker: SB-AK22 (E)

SC-AK22 (EB) Music Center: SA-AK22 (EB)

Speaker: SB-AK22 (E)

SC-AK22 (EG) Music Center: SA-AK22 (EG)

Speaker: SB-AK22 (E)

Notes:

1.Specifications are subject to change without notice. Weight and

dimensions are approximate.

2.Total harmonic distortion is measured by the digital spectrum

analyzer.

11 CD Test Mode Function 21

12 Measurements and Adjustments 21

13 Illustration of IC’s, Transistors and Diodes 24

14 Terminal Function of IC’s 25

15 Block Diagram 29

16 Schematic Diagram 35

17 Printed Circuit Board 48

18 Wiring Connection Diagram 59

19 Troubleshooting Guide 60

20 Parts Location and Replacement Parts List 61

CONTENTS

Page Page

1 Before Repair and Adjustment

Disconnect AC power, discharge Power Supply Capacitors C536, C545, C546 through a 10 Ω, 5W resistor to ground.

DO NOT SHORT-CIRCUIT DIRECTLY (with a screwdriver blade, for instance), as this may destroy solid state devices.

After repairs are completed, restore power gradually using a variac, to avoid overcurrent.

Current consumption at AC 230 V, 50 Hz in NO SIGNAL mode should be ~400mA.

2 Protection Circuitry

The protection circuitry may have operated if either of the following conditions are noticed:

•

••

•

No sound is heard when the power is turned on.

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••

•

Sound stops during a performance.

The function of this circuitry is to prevent circuitry damage if, for example, the positive and negative speaker connection wires are

“shorted”, or if speaker systems with an impedance less than the indicated rated impedance of the amplifier are used.

If this occurs, follow the procedure outlines below:

1.Turn off the power.

2.Determine the cause of the problem and correct it.

3.Turn on the power once again after one minute.

Note:

When the protection circuitry functions, the unit will not operate unless the power is first turned off and then on again.

A-AK22

3 Accessories

Remote Control

Transmitter

FM indoor antenna (E,EB)

FM indoor antenna (EG)

AC mains lead (E,EG)

AC mains lead (EB)

AM Loop antenna

Antenna Plug Adaptor (EB)

SA-AK2

4 Handling Precautions For Traverse Deck

The laser diode in the traverse deck (optical pickup) may break down due to potential difference caused by static electricity of

clothes or human body.

So, be careful of electrostatic breakdown during repair of the traverse deck (optical pickup).

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••

•

Handling of traverse deck (optical pickup)

1.Do not subject the traverse deck (optical pickup) to static electricity as it is extremely sensitive to electrical shock.

2.The short land between the No.4(LD) and No.5(GND) pins on the flexible board (FFC) is shorted with a solder build-up to

prevent damage to the laser diode.To connect to the PC board, be sure to open by removing the solder build-up, and finish the

work quickly.

3.Take care not to apply excessive stress to the flexible board (FFC).

4.Do not turn the variable resistor (laser power adjustment). It has already been adjusted.

•

••

•

Grounding for electrostatic breakdown prevention

1.Human body grounding

Use the anti-static wrist strap to discharge the static electricity from your body.

2.Work table grounding

Put a conductive material (sheet) or steel sheet on the area where the traverse deck (optical pickup) is placed, and ground

the sheet.

Caution :

The static electricity of your clothes will not be grounded through the wrist strap. So, take care not to let your clothes touch the

traverse deck (optical pickup).

Caution when Replacing the Traverse Deck :

The traverse deck has a short point shorted with solder to protect the laser diode against electrostatics breakdown. Be sure to

remove the solder from the short point before making connections.

A-AK22

5 Precaution of Laser Diode

Caution :

This product utilizes a laser diode with the unit turned "ON", invisible laser radiation is emitted from the pick up lens.

Wavelength : 780 nm

Maximum output radiation power from pick up : 100 µW/VDE

Laser radiation from pick up unit is safety level, but be sure the followings:

1.Do not disassemble the optical pick up unit, since radiation from exposed laser diode is dangerous.

2.Do not adjust the variable resistor on the pick up unit. It was already adjusted.

3.Do not look at the focus lens using optical instruments.

4.Recommend not to look at pick up lens for a long time.

ACHTUNG :

Dieses Produkt enthält eine Laserdiode. Im eingeschalteten Zustand wird unsichtbare Laserstrahlung von der Lasereinheit

abgestrahlt.

Wellenlänge : 780nm

Maximale Strahlungsleistung der Lasereinheit :100 µW/VDE

Die Strahlung an der Lasereinheit ist ungefährlich, wenn folgende Punkte beachtet werden:

1.Die Lasereinheit nicht zerlegen, da die Strahlung an der freigelegten Laserdiode gefährlich ist.

2.Den werkseitig justierten Einstellregler der Lasereinhit nicht verstellen.

3.Nicht mit optischen Instrumenten in die Fokussierlinse blicken.

4.Nicht über längere Zeit in die Fokussierlinse blicken.

ADVARSEL: I dette a apparat anvendes laser.

CAUTION!

THIS PRODUCT UTILIZES A LASER.

USE OF CONTROLS OR ADJUSTMENTS OR PERFORMANCE OF PROCEDURES OTHER THAN THOSE SPECIFIED HEREIN MAY RESULT

IN HAZARDOUS RADIATION EXPOSURE.

QUse of Caution Labels

SA-AK2

6 Caution for AC Mains Lead

A-AK22

7 Operation Procedures

SA-AK2

A-AK22

Some chassis components may have sharp edges.

Be careful when disassembling and servicing.

•

••

•

Main Component Replacement Procedures

8 Disassembly and Main Component Replacement

Procedures

“ATTENTION SERVICER”

This section describes procedures for checking the operation of the major printed circuit boards and replacing the

main components.

For reassembly after operation checks or replacement, reverse the respective procedures.

Special reassembly procedures are described only when required.

Select items from the following index when checks or replacement are required.

Contents

•

••

•

Disassembly and assembly main unit

1.Checking of the Main, Panel and Deck P.C.B.

2.Checking of the Power P.C.B.

1.Replacement of the Traverse Deck.

2.Replacement of the Power Amplifier IC.

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••

•

Disassembly and assembly of the Traverse Unit

•

••

•

Disassembly and assembly of the Disc Tray

Warning:

This product uses a laser diode. Refer to caution statement Precaution of Laser Diode.

ACHTUNG:

Die Lasereinheit nicht zerlegen.

Die Lasereinheit darf nur gegen eine vom Hertsteller spezifizierte Einheit ausgetauscht werden.

SA-AK2

Step 2 Remove the top cabinet.

Step 3 Remove the T-bracket.

Step 5 Turn locating pin on both sides 90°. (Locating pin need

not to be bent back.)

Step 6 Release the wires CN302, CN303, CN304, CN309 and

CN502. Remove rear panel by pulling it backward and lift the

rear panel assembly.

8.1. Disassembly Procedure For Each Major P.C.B. checking

8.1.1. Checking of the Main, Transformer, Panel and Deck P.C.B.

A-AK22

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