Panasonic SAAK18 - MINI HES W/CD-PLAYER Manuale utente

ORDER NO. MD0003033C2

CD Stereo System

SA-AK18

Colour

(S)... Silver Type

Area

(E)...Europe

(EB)...Great Britain

(EG)...Germany and Italy

TAPE SECTION :

AR2 MECHANISM SERIES

CD SECTION :

RAE0152Z-3 TRAVERSE DECK SERIES

SPECIFICATIONS

Specifications

CD Stereo System 1

Specifications 1

1. Before Repair and Adjustment 3

2. Protection Circuitry 3

3. Accessories 3

4. Handling Precautions For Traverse Deck 5

5. Precaution of Laser Diode 6

6. Caution for AC Mains Lead 8

7. Operation Procedures 9

8. Operation Checks and Main Component Replacement Procedures 11

8.1. Checking Procedure for each major P.C.B. 12

8.1.1. Checking of the Main, Panel, Deck and Power P.C.B. 12

8.2. Main Component Replacement Procedures 15

8.2.1. Replacement of the Traverse Deck 16

8.2.2. Replacement of the Power Amplifier IC 18

8.3. Disassembly and assembly of the Traverse Unit 20

8.4. Disassembly and assembly of the Disc Tray 22

9. Self-Diagnostic Function 25

9.1. Self-diagnostic display 25

9.2. How to enter the Self-Diagnostic Function 25

9.3. Cassette Mechanism Test (For error code H01, H02, H03, F01, F02) 26

9.4. CD Mechanism Test (F15, F26, F16, F17, F27, F28, F29, H15, F75) 26

9.5. To clear all Error code 27

9.6. How to get out from Self-Diagnostic function 27

9.7. Power Amplifier Failure (F61) 27

10. Description of Error Code 27

10.1. Error detection for Cassette Mechanism block 27

10.2. Error detection for CD/Changer block 27

10.3. Power Supply related error detection 28

11. CD Test Mode Function 28

11.1. How to set CD test mode 28

11.2. CD Automatically Adjustment result indication 29

12. Measurements and Adjustments 29

12.1. Cassette Deck Section 29

12.1.1. Head Azimuth Adjustment (Deck 1/2) 29

12.1.2. Tape Speed Adjustment (Deck 1/2) 30

12.1.3. Bias and Erase Voltage Check 30

12.1.4. Bias Frequency Adjustment (Deck 1/2) 31

12.2. Tuner Section 31

12.2.1. AM-IF Alignment 31

12.3. Alignment Points 32

13. Illustration of IC’s, Transistors and Diodes 33

14. Terminal Function of ICs 33

14.1. IC701 (AN8839NSBE2) Servo Amplifier 33

14.2. IC702 (MN662790RSC) Servo processor/ Digital signal processor/ Digital filter/ D/A converter 34

14.3. IC703 (AN8739SBE2) Focus coil/ Tracking coil/ Traverse motor/ Spindle motor driver 36

14.4. IC600 (M38199MF227) System Microprocessor 37

15. Block Diagram 39

16. Schematic Diagram 39

17. Printed Circuit Board 42

18. Wiring Connection Diagram 42

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19. Troubleshooting Guide 42

20. Parts Location and Replacement Parts List 43

20.1. Deck Mechanism (RAA3410-S) 44

20.1.1. Deck Mechanism Parts Location 44

20.1.2. Deck Mechanism Parts List 46

20.2. CD Loading Mechanism (RD-DAC026-S) 47

20.2.1. CD Loading Mechanism Parts Location 47

20.2.2. CD Loading Mechanism Parts List 49

20.3. Cabinet 51

20.3.1. Cabinet Parts Location 51

20.3.2. Cabinet Parts List 53

20.4. Electrical Parts List 54

20.5. Packing Materials & Accessories Parts List 85

20.6. Packaging 85

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█AMPLIFIER SECTION

RMS power output

THD 10%, both channels driven 60 W per channel (6 Ω)

Input sensitivity

AUX 250 mV

Input Impedance

AUX 13.9 kΩ

█FM TUNER SECTION

Frequency range 87.5 - 108 MHz (50 kHz steps)

Sensitivity 1.8 µV (IHF)

S/N 26 dB 1.5 µV

Antenna terminal(s) 75 Ω(unbalanced)

█AM TUNER SECTION

Frequency range 522 - 1629 kHz (9 kHz steps)

Sensitivity

S/N 20 dB (at 999 kHz) 560 µV/m

█CASSETTE DECK SECTION

Track system 4 track, 2 channel

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

HIGH (TYPE II) 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

█CD 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 8 fs

D/A converter MASH (1 bit DAC)

█GENERAL

Power supply

For E, EG AC 230 V, 50 Hz

For EB AC 230-240 V, 50 Hz

Power consumption 152 W

Power consumption in standby mode

Eco mode on 0.4 W

Eco mode off 12 W

Dimensions (W x H x D) 270 x 330 x 310 mm

Weight 6.9 kg

█SYSTEM

SC-AK18 (E) Music Center: SA-AK18 (E)

Speaker: SB-AK18 (E)

SC-AK18 (EB) Music Center: SA-AK18 (EB)

Speaker: SB-AK18 (E)

SC-AK18 (EG) Music Center: SA-AK18 (EG)

Speaker: SB-AK18 (E)

Notes:

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

dimensions are approximate.

2. Total harmonic distortion is measured by the digital spectrum analyzer.

1. Before Repair and Adjustment

Disconnect AC power, discharge Power Supply Capacitors C536, C545, C546 and C555 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 ~200mA.

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.

- 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.

3. Accessories

Remote Control Transmitter

FM indoor antenna

AC mains lead (E,EG)

AC main lead (EB)

FM antenna Plug Adaptor (EB)

AM Loop antenna

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).

• 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 board).

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.

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 frompick 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 :100W/VDE / DieStrahlung 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.

█Use of Caution Labels

6. Caution for AC Mains Lead

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