Panasonic SA-PM28E Bedienungsanleitung

Order No. MD0304130C2

CD Stereo System

SA-PM28E / SA-PM28EB / SA-PM28EG

Color

(S) ... Silver Type

SPECIFICATIONS

Specification

Amplifier Section

RMS Power output

10%Total harmonicdistortion

1kHz, bothchannelsdriven

(Lowchannel) 35 Wper channel (6)

8kHz, bothchannelsdriven

(High channel) 35 Wper channel (6)

Total Bi-Amppower 70 Wper channel

Input sensitivity

AUX 250 mV

Input impedance

AUX 11.8k

FM Tuner Section

Frequencyrange 87.50 - 108.00 MHz

(50 kHz steps)

Sensitivity 1.8V (IHF)

S/N 26 dB 1.5V

Antennaterminal(s) 75 (unbalanced)

AM Tuner Section

Frequencyrange 522 - 1629 kHz (9kHz steps)

520 - 1630 kHz (10 kHz steps)

Sensitivity

S/N 20 dB (at 999 kHz) 560 V/m

CassetteDeck Section

Track system 4 track, 2channel

Heads

Record/playback Solidpermalloyhead

Erasure Doublegapferritehead

Motor DC servomotor

Recording system AC bias 100 kHz

Erasing system AC erase 100 kHz

Tapespeed 4.8cm/s

Overall frequencyresponse (+3to-6dB at Deck Out)

Normal (TypeI) 35 Hz - 14 kHz

S/N 50 dB (Aweighted)

Wowand flutter 0.18%(WRMS)

Fast forwardand rewind times Approx. 120 secondswithC-

60 cassettetape

CD Section

Disc played

CD/MP3/WMA 8cm/12cm, CD-R/RW

Sampling frequency 44.1kHz

Decoding 16 bit linear

Pickup

Beam source/ Wavelength Semiconductorlaser / 780

Number of channels Stereo

Frequencyresponse 20 Hz - 20 kHz (+1, -2dB)

Wowand flutter Belowmeasurablelimit

Digital filter 8 fs

D/Aconverter MASH (1bit DAC)

MP3

Bit rate 32kbps- 320 kbps

Sampling frequency 32 kHz, 44.1kHz, 48 kHz

WMA

Sampling frequency 32 kHz, 44.1kHz, 48 kHz

General

Power supply

ForEB only AC 230 - 240 V, 50 Hz

ForE & EG only AC 230 V, 50 Hz

Power consumption 130 W

Power consumption standbymode Approx.0.6W

Dimensions(WxH xD) 179 x247 x378 mm

Mass 5.4kg

System

System: SC-PM28 (E) MusicCenter: SA-PM28 (E)

Speaker: SB-PM28 (P)

System: SC-PM28 (EB) MusicCenter: SA-PM28 (EB)

Speaker: SB-PM28 (P)

System: SC-PM28 (EG) MusicCenter: SA-PM28 (EG)

Speaker: SB-PM28 (EG)

Notes:

1. Specificationsaresubject to changewithoutnotice. / Mass and

dimensionsareapproximate.

2. Total harmonicdistortion ismeasured bythedigital spectrum

analyzer.

Unauthorized copying and distribution isaviolation of law.

1. Before Repair and Adjustment

Disconnect AC power, discharge PowerSupplyCapacitors C311, C313, C314, C506, C507, C508,

C584, C587, C588 and C708 through a 10 , 5 W resistortoground. DO NOTSHORT-CIRCUIT

DIRECTLY (witha screwdriverblade, forinstance), as this maydestroysolidstate devices.

Afterrepairs are completed, restore powergraduallyusing a variac, toavoidovercurrent.

Current consumption at AC 230 V, 50 Hz inNO SIGNALmode shouldbe ~300 mA.

2. Protection Circuitry

The protection circuitrymayhave operatedif eitherof the following conditions are noticed:

-Nosound isheard when the power isturned on.

-Stops during aperformance.

The function of this circuitryis toprevent circuitrydamage if, forexample, the positive and

negative speakerconnection wires are “shorted”, orif speakersystems withanimpedance less

thanthe indicatedratedimpedance of the amplifierare used.

If this occurs, followthe procedure outlines below:

1. Turn off the power.

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

3. Turn on the power once againafter one minute.

Note:

Whenthe protection circuitryfunctions, the unit will not operate unless the poweris first turned

off and thenon again.

3. Accessories AC MainLead.....(ForEB only)

AC MainLead.....(ForE & EG only)

AM Loop Antenna.....1 pc

FM IndoorAntenna

Remote Control Transmitter.....1 pc

Antenna plug adaptor.....(ForEB only)

4. Caution for AC Main Lead

5. Front Panel Controls

6. Handling the Lead-free Solder

6.1. About lead free solder (PbF)

Distinction of PbF P.C.B.:

P.C.B.s (manufactured) using leadfree solderwill have a PbF stampon the P.C.B.

Caution:

-Pb free solder has ahigher melting point than standard solder;

Typicallythe melting point is50 -70°F (30 -40°C)higher. Please

use ahigh temperature soldering iron. Incase of soldering iron

with temperature control, please set itto 700 ± 20°F (370 ± 10°C).

-Pb free solder will tend to splash when heated too high (about

1100°F/600°C).

-When soldering or unsoldering, please completelyremove all of

the solder on the pins or solder area, and be sure to heat the

soldering points with the Pb free solder until itmelts enough.

7. Handling Precautions For Traverse Deck

The laserdiode inthe traverse deck (optical pickup) maybreak downdue topotential difference

causedbystatic electricityof clothes orhumanbody. So, be careful of electrostatic breakdown

during repairof the traverse deck (optical pickup).

-Handling of traverse deck (optical pickup)

1. Donot subject the traverse deck (optical pickup) to static

electricityas itisextremelysensitive to electrical shock.

2. To prevent the breakdownof the laser diode, an antistatic

shorting pinisinserted into the flexibleboard (FFCboard).

3. Take care not to applyexcessive stress to the flexibleboard (FFC

board). When removing or connecting the short pin, finish the job

inas short time as possible.

4. Donot turn the variableresistor (laser power adjustment). Ithas

alreadybeen adjusted.

-Grounding for electrostaticbreakdownprevention

1. Human bodygrounding

Use the anti-staticwrist strap to discharge the staticelectricity

from your body.

2. Work tablegrounding.

Put aconductive material (sheet) or steel sheet on the area where

the traverse deck (optical pickup) isplace, and ground the sheet.

Caution:

The staticelectricityof your clothes will not be grounded through

the wrist strap. So, take care not to let your clothes touch the

traverse deck (optical pickup).

on whenreplacing the Traverse Deck

The traverse deck has a short point shortedwithsoldertoprotect the laserdiode against

electrostatics breakdown. Be sure toremove the solderfromthe short point before making

connections.

Figure No.7.1

Figure No.7.2

8. Disassembly and Main Component Replacement

Procedures.

“ATTENTION SERVICER”

Some chassis components maybe have sharpedges. Be careful whendisassembling and

servicing.

1. Thissection describes procedures for checking the operation of

the major printed circuitboards and replacing the main

components.

2. For reassemblyafter operation checks or replacement, reverse

the respective procedures. / Special reassemblyprocedures are

described onlywhen required.

3. Select items from the following index when checks or

replacement are required.

4. Refer the Parts No. on the page of “Maincomponent Replacement

Procedures”, ifnecessary.

Contents

-Checking Procedure for each major P.C.B.

-Checking for the MainP.C.B. &Transformer P.C.B.

-Checking for the Deck P.C.B. and Deck Mechanism P.C.B.

-Checking for the Panel P.C.B.

-Checking for Headphone P.C.B. AC Led P.C.B. and Tact Switch

P.C.B.

-Checking for the CD Servo P.C.B. And CD Loading P.C.B.

-Disassemblyfor CD Loading Unit

-Disassemblyfor traverse mechanism

-MainComponent Replacement Procedure

-Procedure for Replacing Cassette Holder

-Procedure for Replacing Pinch Roller and Head Block (Cassette

Mechanism Unit)

-Procedure for Replacing Motor, Capstan BeltA, Capstan BeltB

and Winding Belt(Cassette Mechanism Unit)

-Procedure for Replacing Parts on Mechanism P.C.B.

-Replacement for CD traverse deck

-Replacement for optical pickup unit(CD Mechanism)

-Replacement for atraverse gear Aand atraverse gear B

-Replacement for disc tray

-Replacement for traverse deck

-Replacement of the power amplifier IC

-Handling of cassette tape jam

Warning:

Thisproduct uses alaser diode. Refer to “Precaution of Laser

Diode”.

ACHTUNG :-

-DieLasereinheitnicht zerlegen.

-DieLasereinheitdarf nur gegen eine vom Hertsteller spezifizierte

Einheitausgetauscht werden.

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

8.1.1. Checking forMain& TransformerP.C.B.

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