Panasonic SAAK22 - MINI HES W/CD-PLAYER User manual

ORDERNO. MD0105096C2
CD StereoSystem
SA-AK22
Colour
(S)... SilverType
Area
(E)... Europe
(EB)... Great Britain
(EG)... Germanyand Italy
TAPE SECTION:
SG-2WMECHANISMSERIES
CD SECTION:
RAE0152Z-3 TRAVERSE DECK SERIES
SPECIFICATIONS
Specifications

AMPLIFIERSECTION
RMS power output
THD 10%, both channelsdriven
both channel driven
(E,EB) 80 Wper channel (6)
(EG) 60 Wper channel (6)
Inputsensitivity
AUX 250 mV
InputImpedance
AUX 13 k
FMTUNERSECTION
Frequencyrange 87.50 -108.00 MHz(50 kHz
steps)
Sensitivity 1.8V(IHF)
S/N26 dB 1.5V
Antennaterminal(s) 75 (unbalanced)
AMTUNERSECTION
Frequencyrange 522 -1629 kHz(9kHzsteps)
Sensitivity
S/N20 dB(at999 kHz) 560 V/m
CASSETTEDECK SECTION
Track system 4track, 2channel
Heads
Record/playback Solid permalloyhead
Erasure Doublegap ferritehead
Motor DC servo motor
Recording system ACbias 100 kHz
Erasing system ACerase 100 kHz
Tapespeed 4.8cm/s
Frequencyresponse (+3 dB, -6dBatDECK OUT)
NORMAL (TYPE I) 35 Hz-14 kHz
S/N 50 dB(Aweighted)
Wowand flutter 0.18%(WRMS)
Fastforward and rewind time Approx. 120 secondswith
C-60 cassettetape
CD SECTION
Sampling frequency 44.1kHz
Decoding 16 bitlinear
Beam source/wavelength Semiconductorlaser/780 nm
Number ofchannels Stereo
Frequencyresponse 20 Hz-20 kHz(+1, -2dB)
Wowand flutter Belowmeasurablelimit
Digital filter 8fs
D/Aconverter MASH(1bitDAC)
GENERAL
Power supply
(E,EG) AC230-240V, 50 Hz
(EB) AC230, 50 Hz

Power consumption 170 W
Power consumption in standbymode
0.4W
Dimensions(WxHxD) 250 x332 x316 mm
Mass 8.2kg
SYSTEM
SC-AK22 (E) MusicCenter:SA-AK22 (E)
Speaker:SB-AK22 (E)
SC-AK22 (EB) MusicCenter:SA-AK22 (EB)
Speaker:SB-AK22 (E)
SC-AK22 (EG) MusicCenter:SA-AK22 (EG)
Speaker:SB-AK22 (E)
Notes:
1. Specificationsaresubject to changewithout notice. Weight and
dimensionsareapproximate.
2. Total harmonicdistortion ismeasuredbythe digital spectrumanalyzer.
2001 Matsushita Electronics (S)Pte. Ltd. All rights reserved.
Unauthorizedcopying and distribution isaviolation oflaw.
1. Before Repairand Adjustment
DisconnectAC power, discharge PowerSupplyCapacitors C536, C545, C546 through a 10 ,
5Wresistorto ground.
DONOTSHORT-CIRCUITDIRECTLY(with a screwdriverblade, forinstance), as this may
destroysolidstate devices.
Afterrepairs are completed, restore powergraduallyusing a variac, to avoidovercurrent.
Current consumption atAC 230 V, 50 HzinNOSIGNALmode shouldbe ~400mA.
2. Protection Circuitry
The protection circuitrymayhave operatedifeitherof the following conditions are noticed:
-Nosound isheard whenthepoweristurnedon.
-Sound stopsduring aperformance.
The function of this circuitryis to prevent circuitrydamage if, forexample, the positive and
negative speakerconnection wires are
“shorted”, orifspeakersystems with animpedance less thanthe indicatedratedimpedance of
the amplifierare used.
Ifthis occurs, followthe procedure outlines below:
1. Turn off thepower.
2. Determinethecause oftheproblemand correct it.

3. Turn on thepoweronce againafteroneminute.
Note:
Whenthe protection circuitryfunctions, the unitwill not operate unless the poweris firstturned
off and thenon again.
3. Accessories Remote Control Transmitter
FMindoorantenna (E,EB)
FMindoorantenna (EG)
AC mains lead(E,EG)
AC mains lead(EB)

AMLoop antenna
Antenna Plug Adaptor(EB)
4. Handling Precautions For Traverse Deck
The laserdiode inthe traverse deck (optical pickup) maybreak downdue to potential difference
causedbystatic electricityof clothes orhumanbody.
So, be careful of electrostatic breakdownduring repairof the traverse deck (optical pickup).
-Handling oftraverse deck (optical pickup)
1. Donotsubject thetraverse deck (optical pickup)tostatic
electricityas itisextremelysensitivetoelectrical shock.
2. Theshortland betweentheNo.4(LD) and No.5(GND) pinson the
flexibleboard (FFC) isshortedwithasolderbuild-up toprevent
damagetothelaserdiode.Toconnect tothePCboard, besureto
openbyremoving thesolderbuild-up, and finishtheworkquickly.

3. Take carenottoapplyexcessivestress totheflexibleboard
(FFC).
4. Donotturn thevariableresistor (laserpoweradjustment). Ithas
alreadybeenadjusted.
-Grounding for electrostaticbreakdownprevention
1. Humanbodygrounding
Use theanti-staticwrist straptodischargethestaticelectricity
from your body.
2. Worktablegrounding
Putaconductivematerial (sheet) or steel sheet on thearea
wherethetraverse deck (optical pickup)isplaced, and ground
thesheet.
Caution :
Thestaticelectricityofyour clothes will notbegroundedthrough
thewrist strap. So, take carenottolet your clothes touchthe
traverse deck (optical pickup).
Caution whenReplacing the Traverse Deck :

Thetraverse deck has ashortpointshortedwithsoldertoprotect
thelaserdiodeagainst electrostatics breakdown. Besureto
removethesolderfrom theshortpointbeforemaking
connections.
5. Precaution ofLaser Diode
Caution :
Thisproduct utilizes alaserdiodewiththeunitturned"ON",
invisiblelaserradiation isemittedfrom thepick up lens. /
Wavelength:780 nm / Maximum outputradiation powerfrom pick
up :100 W/VDE / Laserradiation from pick up unitissafetylevel,
butbesurethefollowings:
1. Donotdisassembletheoptical pick up unit, since radiation from
exposedlaserdiodeisdangerous.
2. Donotadjust thevariableresistor on thepick up unit. Itwas
alreadyadjusted.
3. Donotlookat thefocuslensusing optical instruments.
4. Recommend nottolookat pick up lensfor along time.
ACHTUNG:
Dieses Produkt enthälteineLaserdiode. Imeingeschalteten
Zustand wird unsichtbareLaserstrahlung von derLasereinheit
abgestrahlt. / Wellenlänge:780nm / MaximaleStrahlungsleistung
derLasereinheit:100 W/VDE / DieStrahlung anderLasereinheit
ist ungefährlich, wenn folgendePunkte beachtet werden:
1. DieLasereinheitnichtzerlegen, dadieStrahlung ander
freigelegtenLaserdiodegefährlichist.

2. DenwerkseitigjustiertenEinstellreglerderLasereinhitnicht
verstellen.
3. NichtmitoptischenInstrumentenindieFokussierlinse blicken.
4. NichtüberlängereZeitindieFokussierlinse blicken.
ADVARSEL: I dette a apparatanvendes laser.
CAUTION!
THISPRODUCTUTILIZES ALASER.
USE OF CONTROLSOR ADJUSTMENTSOR PERFORMANCEOF PROCEDURES OTHER THAN
THOSE
SPECIFIED HEREIN MAYRESULTIN HAZARDOUSRADIATION EXPOSURE.
Use of Caution Labels

6. Caution for ACMains Lead

7. Operation Procedures

8. Disassemblyand MainComponentReplacement
Procedures
“ATTENTION SERVICER”
Some chassis components mayhave sharpedges.
Be careful whendisassembling and servicing.
1. Thissection describes procedures for checking theoperation of
themajor printedcircuitboardsand replacing themain
components.

2. For reassemblyafteroperation checks or replacement, reverse
therespectiveprocedures.
Special reassemblyprocedures aredescribedonlywhenrequired.
3. Select itemsfrom thefollowing index whenchecks or
replacementarerequired.
Contents
-Disassemblyand assemblymainunit
1. Checking oftheMain, Panel and Deck P.C.B.
2. Checking ofthePowerP.C.B.
-MainComponentReplacementProcedures
1. ReplacementoftheTraverse Deck.
2. ReplacementofthePowerAmplifierIC.
-Disassemblyand assemblyoftheTraverse Unit
-Disassemblyand assemblyoftheDisc Tray
Warning:
Thisproduct uses alaserdiode. Refertocaution statement
Precaution ofLaserDiode.
ACHTUNG:
DieLasereinheitnichtzerlegen.
DieLasereinheitdarfnur gegeneinevom Hertstellerspezifizierte
Einheitausgetauschtwerden.
8.1. DisassemblyProcedureFor EachMajor P.C.B. checking
8.1.1. Checking oftheMain, Transformer, Panel and Deck P.C.B.

Step2 Remove the top cabinet.
Step3 Remove the T-bracket.

Step5 Turnlocating pinon both sides 90°. (Locating pinneednot to be bent back.)
Step6 Release the wires CN302, CN303, CN304, CN309 and CN502. Remove rearpanel by
pulling itbackwardand lift the rearpanel assembly.

Step7 Use a hexagonal wrenchand turnclockwise to release the tray.
Step8 Pull the CD trayinthe direction shownabove.

Step9 Remove the CD lidinthe direction of the arrow.
Step11 Release the twocatches shownabove to remove the front cabinetfrom the CD traverse
unit.

Step12 Connectback the wire to CN302, CN303 and CN304. Use the extension wire (REXX0261)
to connectto CN502. Use a FFC wire (REEX0137)to connectCN1 to CN309.
8.1.2. Checking for Panel, Mainand Deck P.C.B.

Step1 Remove 2 screws eachside.
8.1.3. Checking for Power P.C.B.

8.2. MainComponentReplacementProcedures
1. Replacement of the Traverse Deck
Step1 Followthe procedures in‘Disassemblyof the Traverse Unit’ (Step1 -Step4 )