Panasonic SA-PM65MD User manual

ORDERNO. MD0010161C2
MDStereo System
SA-PM65MD
Colour
(S)... Silver Type
Area
(EB)... Great Britain
(EG)... Germanyand Italy
CD SECTION
RAE0155Z TRAVERSE DECK SERIES
MDSECTION
MR3MECHANISM SERIES
SPECIFICATIONS
Specification
1

Amplifier Section
RMS power output
THD 10%, bothchannelsdriven
LOW 2X 16 W(6 )
HIGH 2X 4W(6 )
Total BI-AMP power 2 X 20 W
Input sensitivity
AUX 390 mV
EXTIN 390 mV
P-MD 100 mV
Output sensitivity
EXTOUT 390 mV
Input/Output impedance
AUX 33 k
EXTIN 33 k
P-MD 10 k
Headphone 16-32
FM tuner section
Frequencyrange 87.50-108.00 MHz
(0.05 MHz steps)
Sensitivity 1.8 V (IHF)
S/N 26 dB 1.5 V
Antennaterminals 75 unbalanced
AM tuner section
Frequencyrange 522-1629 kHz (9kHz steps)
Sensitivity
S/N 20 dB 500 V/m
MD section
System MiniDisc Digital AudioSystem
Recording Magneticfieldmodulation
direct overwrite
Reading Non-contact optical system
withsemiconductorlaser
(Wavelength= 780nm)
Sampling frequency 44.1kHz
Coding system ATRAC
Number of channels 2channelsstereo
Wowand flutter Belowmeasurablelimit
CD section
Sampling frequency 44.1kHz
Decoding 16 bit linear
Beam source Semiconductorlaser
Wavelength 780 nm
Number of channels 2channelsstereo
Wowand flutter Belowmeasurablelimit
Digit filter 8fs
D/Aconverter MASH (1bit DAC)
General
Power supply
ForEB AC 230-240 V, 50Hz
ForEG AC 220-230 V, 50Hz
Power consumption 60 W
2

Standby
ECO 0.8W
NORMAL 8.5W
Dimensions(WxHxD)
Panelsclosed 210x140x365 mm
Panelsopen 210x159x399 mm
Mass 4.7kg
Notes :
1. Specificationsare subject tochangewithout notices. Mass
and dimensionsare approximate.
2. Total harmonicdistortion ismeasuredbythedigital spectrum
analyzer.
*US and foreign patentslicensedfromDolbyLaboratories.
System: SC-PM65MD (EB) MusicCenter: SA-PM65MD (EB)
Speaker: SB-PM65 (EG)
System: SC-PM65MD (EG) MusicCenter: SA-PM65MD (EG)
Speaker: SB-PM65 (EG)
2000 Matsushita Electronics (S) Pte. Ltd. All rights reserved.
Unauthorized copying and distribution isaviolation of law.
1. Before Repair and Adjustment
Disconnect AC power, discharge PowerSupplyCapacitors C905, C910 through a 10 , 5W
resistortoground.
DO NOTSHORT-CIRCUITDIRECTLY (witha screwdriverblade, forinstance), as this may
destroysolidstate devices.
Afterrepairs are completed, restore powergraduallyusing a variac, toavoidovercurrent.
[EG]
-Current consumption at AC 230V, 50 HzinNO SIGNALmode
shouldbe ~160mA.
[EB]
-Current consumption at AC 240V, 50 HzinNO SIGNALmode
shouldbe ~160mA.
2. Protection Circuitry
The protection circuitrymayhave operatedif eitherof the following conditions are noticed:
-Nosound isheard when the power isturned on.
-Sound stops during aperformance.
The function of this circuitryis toprevent circuitrydamage if, forexample, the positive and
negative speakerconnection wires are "shorted", orif speakersystems withanimpedance less
3

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
Note : RefertoPacking Materials & Accessories forpart number.
Remote Control Transmitter
FM indoorantenna
AC mains lead(EG)
AC mains lead(EB)
4

FM antenna Plug Adaptor(EB)
AM Loop antenna
4. Handling Precautions For Traverse Deck (CD/MD)
The laserdiode inthe traverse deck (optical pickup) maybreak downdue topotential difference
causedbystatic electricityof clothes orhumanbody.
So, be careful of electrostatic breakdownduring repairof the traverse deck (optical pickup).
Handling of CD traverse deck (optical pickup)
1. Donot subject the traverse deck (optical pickup) to static
electricityas itisextremelysensitive to electrical shock.
2. The short land between the No.4(LD)and No.5(GND)pins on the
flexibleboard (FFC)isshorted with asolder build-up to prevent
damage to the laser diode.
3. Take care not to applyexcessive stress to the flexibleboard (FPC
5

board).
4. Donot turn the variableresistor (laser power adjustment). Ithas
alreadybeen adjusted.
Handling of MD Unit (optical pickup)
1. Donot subject the MDunit(optical pickup) to staticelectricityas
itisextramelysensitive to electrical shock.
2. The short land between the No.25 (LD-GND)and No. 24 (LD)pins
on the flexibleboard isshorted with asolder builder up to prevent
damage to the laser diode.
3. Take care not to applyexcessive stress to the flexibleboard (FFC).
4. Donot turn the variableresistor (laser power adjustment). Ithas
alreadybeen adjusted..
6

Grounding forelectrostatic breakdownprevention
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) isplaced, 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).
Caution whenReplacing the Optical Pickup :
The traverse has ashort point shorted with solder to protect the
laser diode against electrostatics breakdown. Besure to remove
the solder from the short point before making connections.
5. Precaution of Laser Diode
Caution :
Thisproduct utilizes alaser diode with the unitturned "ON",
invisiblelaser radiation isemitted from the pick up lens. /
Wavelength :780 nm / Maximum output radiation power from pick
up :100 mW/VDE/ Laser radiation from pick upunitissafetylevel,
but be sure the followings:
1. Donot disassemblethe optical pick up unit, since radiation from
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exposed laser diode isdangerous.
2. Donot adjust the variableresistor on the pick up unit. Itwas
alreadyadjusted.
3. Donot look at the focus lens using optical instruments.
4. Recommend not to look at pick up lens for along time.
ACHTUNG :
Dieses Produkt enthälteine Laserdiode. Imeingeschalteten
Zustand wird unsichtbare Laserstrahlung von der Lasereinheit
abgestrahlt. / Wellenlänge :780nm / MaximaleStrahlungsleistung
der Lasereinheit:100W/VDE/ DieStrahlung an der Lasereinheitist
ungefährlich, wenn folgende Punkte beachtet werden:
1. DieLasereinheitnicht zerlegen, da dieStrahlung an der
freigelegten Laserdiode gefährlich ist.
2. Den werkseitigjustierten Einstellregler der Lasereinhitnicht
verstellen.
3. Nicht mitoptischen Instrumenten indieFokussierlinse blicken.
4. Nicht über längere ZeitindieFokussierlinse blicken.
ADVARSEL:
I dette aapparat anvendes laser.
CAUTION!
THIS PRODUCTUTILIZES A LASER.
USE OFCONTROLS OR ADJUSTMENTS OR PERFORMANCE OFPROCEDURES OTHER THAN
THOSE
SPECIFIED HEREIN MAY RESULT IN HAZARDOUS RADIATION EXPOSURE.
Use of Caution Labels
8

6. Caution for AC Mains Lead
9

7. Operation Procedures
10

11

8. Operation Check and Main Component
Replacement Procedures
“ATTENTION SERVICER”
Some chassiscomponents mayhave sharp edges. Becareful when
disassembling and servicing.
12

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 Transformer P.C.B. and MainP.C.B.
-Checking for the Panel P.C.B., CD Loding P.C.B., MDLoding P.C.B.
and Tact Switch P.C.B.
-Checking for the MDServo P.C.B. and MDConnector P.C.B.
-Checking for the CD Servo P.C.B.
-Checking for the Power P.C.B.
-Diaassemblyand Assemblyof the Disc Trayand CD Traverse Unit
-Disassemblyof the Disc Tray
-Disassemblyof the CD Traverse Unit
-MainComponent Replacement Procedure
-Replacement of the CD Servo P.C.B. and Optical Pick-up Unit
-Removal of the Deck P.C.B. and Mechanism P.C.B. for replacing
parts
-Replacement for the MagneticHead and Optical Pick-up
-Replacement for the Beltand Loading Motor Assembly
-Replacement for the Traverse Motor Assembly
Warning :-
Thisproduct uses alaser diode. Refer to caution statement
Precaution of Laser Diode.
ACHTUNG :-
-DieLasereinheitnicht zerlegen.
-DieLasereinheitdarf nur gegen eine vom Hertsteller spezifizierte
13

Einheitausgetauscht werden.
8.1. Checking Procedure for Each Major P.C.B.
8.1.1. Checking forthe TransformerP.C.B. and MainP.C.B.
-Check the Transformer P.C.B. and MainP.C.B. as shown.
8.1.2. Checking forthe Panel P.C.B., CD Loding P.C.B., MD Loding P.C.B. and
Tact Switch P.C.B.
Step1 Disconnect CS701A, CS703 and CS704.
Step2 Unscrewall the screws.
Step3 Remove the front panel inthe direction of arrowshown.
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Step4 Unscrewall the screws and remove the MotorAssembly.
Step5 Unscrewall the screws and remove the Sliders.
Step5 Unscrewall the screws and release the catches.
15

-Reconnect all the connectors.
-Check the Panel P.C.B., CD Loding P.C.B., MDLoding P.C.B. and
Tact Switch P.C.B. as shown.
8.1.3. Checking forthe MD Servo P.C.B. and MD ConnectorP.C.B.
Step1 Unscrewall the screws and disconnect the connector(CP901).
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-Reconnect the connector.
-Check the MDServo P.C.B. and MDConnector P.C.B. as shown.
-When checking the IC1on the MDServo P.C.B., itcan be measured
with test point on the MDServo P.C.B.
8.1.4. Checking forthe CD Servo P.C.B.
17

Step1 Unscrewall the screws.
Step2 Lift up the MainP.C.B., disconnect all connectors as shownand lift up the MD Angle in
the direction of arrowshown.
18

Step3 Unscrewall the screws.
-Reconnect all the connectors.
-Check the CD Servo P.C.B. as shown.
8.1.5. Checking forthe PowerP.C.B.
19

Step2 Unscrewall the screws.
-Check the Power P.C.B. as shown.
8.2. Disassemblyand Assemblyof the Disc Trayand CD Traverse
Unit
8.2.1. Disassemblyof the Disc Tray.
Step1 Turnthe gearcounterclock wise until the CD Traystarts tomove out.
20