Panasonic SA-PM27E User manual

Order No. MD0206158C2
CD Stereo System
SA-PM27E / SA-PM27EB / SA-PM27EG
Colour
(K)... Black Type
SPECIFICATIONS
Specification
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Amplifier Section
RMS Power output
10%Total harmonicdistortion
100 Hz, bothchannelsdriven(Low
channel) 30 Wper channel (6 )
1kHz, bothchannelsdriven(High
channel) 30 Wper channel (6 )
Total Bi-Amppower 60 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 1.8 V (IHF)
S/N 26 dB 1.5 V
Antennaterminal(s) 75 (unbalanced)
AM Tuner Section
Frequencyrange 522-1629 kHz (9kHz 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 (+3dB, -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
Sampling frequency 44.1kHz
Decoding 16 bit linear
Pickup
Beam source/ Wavelength Semiconductorlaser/ 780 nm
Number of channels Stereo
Frequencyresponse 20 Hz - 20 kHz (+1, -2dB)
Wowand flutter Belowmeasurablelimit
Digital filter 8 fs
D/Aconverter MASH (1bit DAC)
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General
Power supply AC 230 V, 50 Hz
Power consumption 110 W
Dimensions(WxH xD) 179 x241 x375 mm
Mass 5.6kg
Power consumption instandby
mode Approx. 0.7W
System: SC-PM27(E) MusicCenter: SA-PM27(E)
Speaker: SB-PM27(P)
System: SC-PM27(EB) MusicCenter: SA-PM27(EB)
Speaker: SB-PM27(P)
System: SC-PM27(EG) MusicCenter: SA-PM27(EG)
Speaker: SB-PM27(EG)
Notes:
1. Specificationsaresubject to changewithoutnotice. / Mass and
dimensionsareapproximate.
2. Total harmonicdistortion ismeasured bythedigital spectrum
analyzer.
2002 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 C506, C507, C508, C576, C577, C587,
C588, C615 through a 10 , 5 W resistortoground. DO NOTSHORT-CIRCUITDIRECTLY (witha
screwdriverblade, forinstance), as this maydestroysolidstatedevices.
Afterrepairs are completed, restore powergraduallyusing a variac, toavoidovercurrent.
Current consumption at AC 230 V, 50 Hz inNO SIGNALmode shouldbe ~300 mA.
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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 ofthe 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 Mains lead(E/EG).....1 pc
AC Mains lead(EB).....1 pc
AM Loop Antenna.....1 pc
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FM IndoorAntenna.....1 pc
Antenna Plug Adaptor.....1 pc (EB only)
Remote Control Transmitter.....1 pc
4. Caution for AC Mains Lead
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5. Self-Diagnostic Display Function
This unit is equippedwitha self-diagnostic displayfunction, whichwill be useful during
servicing and maintenance.
-Refer to the next page for displaysymbols, symptoms, etc.
5.1. Preparations
1. ACr02-positioned blank cassette tape with an erase prevention
niche on either Side Aor B.
2. Anormal-positioned musictape with erase prevention niches on
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both Sides Aand B. Both tapes are halfwayforwarded inadvance.
3. The remote controller that comes with thisunit.
5.2. Setting of the Self-DiagnosticMode
5.3. Restoring Normal Display
-From the F76 display, the normal displaydoes not appear till an
error isrecovered.
-For displaysother than F76, press “POWER”button to turn off the
power, and then turn on the power.
5.4. Clearing Self-DiagnosticMemory
<CD Section> (F15, F17, F22, F26, F27, F28, F29)
1. Enter aself-diagnosticmode.
2. Press " /-DEMO"button. Asymbol of self-diagnosticis
indicated on the displayifan error isfound. Ifseveral errors are
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found, arespective indication isdisplayed when" /-DEMO"
button ispressing repeatedly. (e.g. H01 CD F15 F01) / Ifno
error isfound, only"TEST" indication isdisplayed and remains
unchange even if" /-DEMO"button ispressed.
5.5. Displaying Self-DiagnosticResults
<Cassette Deck Section> (H01, H02, H03, F01, F02)
1. Enter the self-diagnosticmode, following the instructions
described in[5.2. Entering Self-DiagnosticMode].
2. Insert anormal-positioned musictape with erase prevention
niches on both Sides Aand B. Press [TAPE ] button to
activate the TPS operation so that the tape automaticallystopsat
an interval between musicselections.
3. Press [ /CLEAR]and [TAPE ] buttons together on the
remote controller. (Recording does not start.)
4. Then, insert aCr02-positioned blank cassette tape with an erase
prevention niche of Side Aor Bset to the left side.
5. Press [ /FF/ ]button. The tape will be forwarded and
automaticallystop after twoseconds.
6. Remove the cassette tape, and set the other side.
7. Press [ /REW/ ]button. The tape will be rewound and
automaticallystops after twoseconds.
8. Press [ /-DEMO]button on the unit.
Ifan error isfound, aself-diagnostickeyappears on the display.
Ifseveral errors are found, the displayshowsthese keyswhen [
/-DEMO]button ispressed repeatedly. (Ex.:H01 -H02 -F01 -H01)
Ifno error isfound, onlythe message, “CD TEST” appears on the
display.
(*1) TPS operation (music search) detects the blank sections betweenmusic selections.
Therefore, do not use tapes withthe following conditions:
-Ablank section that lasts only4seconds or less.
-Noblank sections (recording through microphones, etc.).
-Musicselections that have extremelylow pitches or prolonged
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silent sections (such as classical music).
-and/or Musicrecorded with fade in/out effect.
6. 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
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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).
Caution 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.
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7. Precaution of Laser Diode
CAUTION:
Thisproduct utilizes alaser diode with the unittruned “ON”,
invisiblelaser radiation isemitted from the pick up lens. /
Wavelength :780 nm / Maximum output radiation power from pick
up :100 W/VDE/ Laserradiation from pick up unitissafetylevel,
but be sure the followings:
1. Donot disassemblethe optical pick up unit, since radiation from
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. Imenigeschalteten
Zustand wird unsichtbare Laserstrahlung von der Lasereinheit
abgestrahlt. / Wellenlänge :780nm / MaximaleStrahlungsleistung
der Lasereinheit:100 W/VDE/ DieStrahlung an der Lasereinheit
ist ungefährlich, wenn folgende Punkte beachtet werden:
1. DieLasereinheitnicht zerlegen, da dieStrahlung an der
freigelegten Laserdiode gefährlich ist.
2. Den werkseitigjustierten Einstellregler der Lasereinhitnicht
verstellen.
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3. Nicht mitoptischen Instrumenten indieFokussierlinse blicken.
4. Nicht über längere ZeitindieFokussierlinse blicken.
ADVARSEL: I dette a apparat 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
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8. Front Panel Controls
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14

9. Disassembly and Main Component Replacement
Procedures.
“ATTENTION SERVICER”
Some chassis components maybe have sharpedges. Be careful whendiassembling 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.
Content
-DisassemblyProcedure for each major P.C.B.
-Disassemblyof CD Loading Unit
-Disassemblyof CD Loading Section
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-Disassemblyof Traverse Mechanism
-MainComponent Replacement Procedures
1. Procedure of replacing Cassette Holder
2. Procedure of replacing Pinch Roller and Head Block (Cassette
Mechanism Unit)
3. Procedure of replacing Motor, Capstan BeltA, Capstan BeltB
and Winding Belt(Cassette Mechanism Unit)
4. Procedure of replacing Parts on Mechanism P.C.B
5. Replacement of CD Traverse Deck
6. Replacement of Optical Pickup Unit(CD Mechanism)
7. Replacement of aTraverse Gear Aand aTraverse Gear B
8. Replacement of Disk Tray
9. Replacement of the Traverse Mechanism
10. Replacement of CD Loading Unit
-Assemblyof CD Loading Unit
-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.
9.1. DisassemblyProcedure for each major P.C.B.
Step1 & 2 Remove all the screws.
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Step3 Remove all the screws and pull up the cassette lidas the arrowshown.
Step4 Release the connectors CN307, CN308 and CN1303. Remove the cassette lid.
Step5 Release the connectorCN310 and pull out the back coveras the arrowshown.
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Step6 Release the connectors CN504, CN305 and CN301.
Step7 Release the connectors CN606, CN602, CN505, CN500 and remove all the screws.
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Step8 Remove all the screws.
Step9 Release the catches and pull out the front panel as the arrowshown.
Step10 Remove all the screws and release the connectorCN607A.
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Steps 11 & 12 Remove all the screws.
Step13 Remove all the screws and pull up the coveras the arrowshown.
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