TECHNICS RS TR575 Service Manual

ORDER NO.AD9403060CO
A2
      Dolby NR・EquipPed
Stereo Double Cassette Deck
AR・1MECHANISM SERIES
SPECIFICATlONS
■CASSETTE DECK SECT10N
Deck system
Track sys電em
Recording sys量em
 Bias百requency
E『asing system
Heads  DECK1
DECK2
Mo看ors DECK1
DECK2
Tape speed
Wow and flut電er
  For(P,PC》areas
  For others
Fas量fo…ard and rewind量imes
               Approx、50seconds with C−60cassette tape
Frequency response(Dolby NR off》
 NORMAL                     40Hz−15kHz±3dB
   For(P,PC》areas                   20Hz−17kHz    Foro量hers                   20Hz−16kHz(DIN)
 CrO2                          40Hz−15kHz±3dB
   For《P,PC》areas                     20Hz−17kHz
   For oセhers                   20Hz−16kHz(DIN)
 METAL                  40Hz−16kHz±3dB
   For(P,PC》areas                      20Hz−18kHz
   For others                   20Hz−17kHz(DIN)
             Stereo cassette deck
               4−track,2−channeI
                      AC bias
                       80kHz
                     AC erase
Recording1Playback head(PermaIloy)×1
   Erasing head(Double・gap ferrite)×1
Recording/Playback head(Permalby)×1
   Erasing head(Doubie−gap ferrite)×1
    Capstan drive(DC servo motor)×1
       Reel table drive(DC motor)×1
    Capstan drive(DC servo motor)×1
       Reel table drive(DC motor)×1
             4.8cmlsec.(1−718ips)
0.1%(WRMS)
0,07%(WRMS)  ±0.2%(DIN)
               Cassette
Deck
(K)
Black Type
Area
Suffix for
ModeI No.
(P)
(PC)
(E)
(EB)
(EG)
(GC)
(GN)
  *Dolby noise reductbn and HX Pro headroom extension
   manufactured under license from Dolby Laboratories
    Licensing Corporatlon. HX Pro originated by Bang and
   Olufsen. DOLBY,the double・D symboI andHX PRO
   are trademarks of Do巳by Lab6ratories Licensing
   Corporation,
SN(Signal level=max recording Ievel,CrO2type tape)
  NR off                      56dB(A weighted)
  Dolby B NR on                 66dB(A weighted)   Dolby C NR on                 74dB(A weighted)
lnput se論si量ivi量y and impedance
 REC(IN》                     100mV147kΩ
Area
U.S.A.
Canada.
Europe.
Great Britain.
Germany and ltaly、
Asia,Latin America,
Middle Near East
and Africa.
Oceania.
Outpu量voltage and匿mpedance
 PLAY(OUT》                    500mV/500Ω
Colour
(K)
HEADPHONES
 For(E,EB,EG,GC,GN)areas            30mV1(8Ω)
                         (Load impedance8Ω一600Ω)
■GENERAl
Powerconsumption                 28W
Power supply
  For(P,PC》areas                       AC60Hz,120V
  For(GC》area          AC50/60Hz,110V1127V1220V/240V
  For others                    AC50160Hz,230V−240V
Dimensions《W×H×D》
          430×136×285mm(16−15/16×5−5116×11−7132)
Weigh量                    4.4kg(9.71b.〉
No量e=
Disign and specifications are subject to change without notice.
Weight and dimensions are approximate.
][1echnics
RS・TR575
■CONTENTS
SAFETY PRECAUTlON..■....■.■.._。__..._.._.._.....
ACCESSORlES......._、..__.._._..._騒._、_,_甲.
CONNECTIONS......■.._..........
CAUTlON FOR AC MAINS LEAD._.._._..............
FRONT PANEL CONTROLS.......■.......昌.5..■........巳.._、
PIAYBACK_一■一..._、一..。.一....■..匿一...一1■...1一.ロ.一.一.一ロ_._■.幽.一_._層噂
ABOUTTHEATC FUNCTlON....■.6..巳..■......_._.噂....._、
SEIF・DIAGNOSTIC...._._
DISASSEM BIY I NSTRUCTIONS.6...、.._._._.......5.....5..
HOW TO CHECK THE MAIN P.C.B........__.___
lNSTALLATION OF THE SUB CHASSIS ASS,Y...._....
INSTALLATION OF THE CASSETTE HOIDER ASS,Y..
REPLACEMENTOFTHE FOOT......_...
REPLACEM ENT OF MAI N PARTS......_.__.。.■........._.
WRITING TO EEPROM_......■..■..._
■SAFETY PRECAUTlON(Thissafety precautlonis applied only ln u.s.A、)
1、
Before servicing,unplug the power cord to prevent an electric shock.
2、
When replacing parts,use only manufacturers recommended components for safety.
3、
Check the、condition of the power cord. RepIace if wear or damage ls evident.
4.
After servicing,be sure to restore the Iead dress,insulation barriers,insulation papers,shields,etc.
5.
Before retuming the serviced equlpment to the customer,be sure to make the foowing insulation resistance
test to prevent the customer from being exposed to a shock hazard.
●lNSUIATION RESISTANCE TEST
1.Unplug the powercord and short the two prongs of the plug with ajumperwire.
2.Tum on the power switch.
3.Measure the resistance value with ohmmeter between the jumpered AC plug and each exposed metal cabinet
   part,such as screwheads antenna,control shafts,handle brackets,etc. Equipment with antenna terminals
   should read between3MΩand5。2MΩto aexposed parts(Fig.A). Equipment without antenna terminals
   should read approximately infinity to all exposed parts(Fig、B).
Note=Some exposed parts may be isolated from the chassis by design. These will read infinity.
 Page
    2     2     3     4     5
  6,7
   8    9
10〜14
14,15
   15
   16
   16
17〜21
22〜24
TROUBLESHOOTING GUIDE.■........__..
MEASUREMENTS AND ADJUSTMENTS.
TERMINAL FUNCTION OF IC.....__.._.
TERMINALGUIDEOFIC,S
   TRANSISTORS AND DIODES.......
BLOCK DIAGRAM........
SCHEMATIC DIAGRAM._...
PRNTED CIRCUIT BOARDS._、.._..._..
WIRING CONNECTlON DIAGRAM....._....
REPIACEMENT PARTS UST_......_.......
CABI N ET PARTS lOCAT10N..__
M ECHANISM PARTS LOCATlON......_..
RESISTORS AND CAPACITORS.........._.
PACKAGlNG..__........._
         37
       38〜40        41〜50
      51〜54
         55
  56,61〜63,66
.....      57,58
       59,60
      64〜66
         66
 Page
25〜30 31〜33 34〜36
Antenna
termlnal
Exposed
meヒaI
part
                                Ohmmeter                     Ohmmeter
Exposed
metal
part
                         (Fl9・A)            (Fl9.B》
                  Reslstance=3MΩ一5.2MΩ                 Resistance=Approx。oo
4.
lf the measurement is outside the specified Iimits,there is a possibility of a shock hazard.
should be repaired and rechecked before it ls retumed to the customer.
■ACCESSORlES
AC power supPly code.
(SJA172)
(VJAO733).
(P,PC)   (RJAOO36−K)
7
眠  。
  o
h
ノ ク{
(EB)  (RJAOO19−2K).(E,EG,GC)
1pc.
(GN)
Stereo connection
cables ...
(SJP2249−3)
2pcs.
(SJP5213・2)(GC area only)
The equipment
Power plug adaptor.....  1pc.
2
■CONNECTlONS
●For《P,PC》areas
St●r●o oon●c電ioo c8bl●
  White(し)
Red (R)
o
        γA匠
     Rεαouη崩γで脚
麟審 ⑯1
Rεα置醐阯《》{0囲
D
ACωTLεTS
 日
 目ロ
AC尉〜
 心
o
ACOUTLσ
Receiver
or amplifier
or   Household AC outlet
   (AC120V,60Hz)
Cと》nnect璽his cord after
ao重her cables and
cOrds are conneCted,
RS・TR575
Before making connections,make surethatthe powertothis unlt
and all other system components is tumed off first,
Avoid Ietting the cables touch each other as much as possible,
otherwise noise wiIl be generated.
Placement hin量s
lf this un建is placed near a receiver or a tuner,ahumnoise
may be heard during tape playback,recording,or AM reception
of the receiver or the tuner。
If this occurs,Ieave as much space as possible between the
units,or place them where there is the least amount ofhum.
0
噂AC・UTLET(UNSWITCHED》
    Power is aIways available,regardless of the units power
   Switch Setting.
   Audioequipmentratedupto100Wcanbeconnected.
●For others
Before making connectlons,make surethatthe powertothis unit
and aII other system components is tumed off.
●Avoid lettingthecablestoucheach otherasmuch aspossible,
 o窒herwise noise will be generated.
●Although the figure beめw shows the AC power supply cord be−
 ing connected to a household AC outlet,if the amplifier(or
 receiver〉isequippedwith an ACoutlet,connectthecord tothat
 outlet.
Placement hints
lf this unit is placed near a receiver or a tuner,ahumnoise
may be heard during tape playback,recording,or AM reception
of the receiver or the tuner.
if this occurs,Ieave as much space a$possible between the
units,or place them where there is the least amount ofhum,
S豊●閥ゆco●C電locab㎞
 Whi電e IL》
Red
k
9Q
(R》
{,
o
 一蔽
劇αの酬㈹
⑩⑩
OQ
 ⑯
Ω
o
辱 辺 。rrece,ver
AmPli壼ier
艇醐酬㎝η
  ⑯
D
d
奪圏
・Voltageselector
GC、
F
For(GC)area
α》nnecUhiScOrdaIter「
a爬01her cables and
CordS are COnneCted
For(EB)area only
BE SURETO READTHE CAUTlON FOR AC
POWER SUPPIY CORD ON PAGE4
BEFORE THE FOILOWING CONNEC・
丁匿ONS.
For(GC》area ony
Set the voltage selector to the voltage setting for the area
ln which the unit will be used.
[Usea minus(一〉screwdriver]
lf the power supply ln your area is117V or120V,set to
the127Vposition,
Note that this unit will be seriously damaged if this setting
is not made correctly.
lf the power plug wilI not fit your socket,
use the power plug adaptor(included).
薙・匝ン
For(E,EB,EG,GC》areas only
Inse『髄on of Connecto『
Even when the connector is perfectly in−
serted,dependingonthetypeofinletused,
the front part of the connector may lut out
as shown in the drawing.
However there is no problem using the unit.
      Connector
  \
Household
H
AC ou璽let
    、4
         \
Approx,6mm
ApPliance inlet
一3一
RS・TR575
■CAUTION FOR AC MAINS LEAD
For(EB》area only.
For your safety,please read the foowing text care−
fuy。
This appliance is supplied with a moulded three pin
mainsplugforyoursafetyandconvenience.
A5−ampere fuse is fitted in this plug.
Should the fuse need to be replaced please ensure
that the replacement fuse has a rating of5−ampere
and that it is apProved by ASTA or BSl to BS1362.
Checkf・rtheASTAmark愈・rtheBSlmark甲・n
the body ofthe fuse,
If the plug contains a removable fuse cover you must
ensure that it is refitted when the fuse is replaced.
If you iose the fuse cover the plug must not be used
until a replacement cover is obtained。
A replacement fuse cover can be purchased from
your local dealer.
CAUTION!
lF THE FITTED MOULDED PLUG IS UN−
SUITABLE FOR THE SOCKET OUTLET IN
YOUR HOME THEN THE FUSE SHOULD BE
REMOVED AND THE PLUG CUT OFF AND
DISPOSEDOF SAFELY.
THERE IS A DANGER OF SEVERE ELEC−
TRICAL SHOCK IF THE CUT OFF PLUG IS
INSERTED INTO ANY13−AMPERE SOCKET.
The wire which is coloured BROWN must be con−
nected to the terminal in the plug which is marked with
theIetterLorcobured RED.
Under no circumstances should either of these wires
be connected to the earth terminal of the three pin
plug,marked with the Ietter E or the Earth Symbol
、去.
Befo『e use
Remove the connector cover as foows.
     劃
Connector
cover
  N
舷)1ノ
How to replace the fuse
1.Remove the fuse cover with a screwdriver.
      Fuse cover
  ....7〜・!εεf恐
−一ノー一一.も一、一占一一
  諌
舷ll
     ・、↓
            〔
If a new plug is to be fitted please observe the wiring
code as shown below.
If in any doubt please consult a qualified electrician・
lMPORTANT
The wires in this mains lead are coloured in accor−
dance with the foowing code=
      Blue: Neutral
      Brown:Live
As the colours of the wires in the mains lead of this
appliance may not correspond with the coloured
markings identifying the terminals in your plug,pro−
ceed as foIlows:
Thewirewhich is coloured BLUE must be connected
to the terminal in the plug which is marked with the
letterNorcolouredBLACK.
2.Replace the fuse and attach the fuse cover、
春一鞠㌦馬
  べ
舷l t
           Fuse
           (5ampere)
・魅
一4一
■FRONT PANEL CONTROLS
When any of the numbers indicated below is repeated more than
once(forexample,②),thenumber indicated on the Ieft lsthe con−
trol for Deck l and that indicated on the right is for Deck2。
RS・TR575
③④中⑥⑦⑧⑨⑩⑪⑧⑫④③
III
L
Lr1甲1]1単「δ準
113  
DECK1璽7ル1搭穐
ll聾
︸1
し一イ)
皇誰纂
 nE綴麗
脊甲
1
14
1516⑰18⑲⑳⑳⑳1918⑰⑯⑬⑭ ⑮
ハb.
①PowerSTANDBY(bONswitch
  (POWER,STANDBY(b,ON》
  Press to switch the unit from on to standby mode or vice
  versa.In standby mode,the unit is stiII consuming a smalI
  amount of power.
②Cassetteholder
③Autotapecabrationbutton(ATC》
ハ融me
創N▼E爾1
徴﹂E
ORξCしEV臥
 …
1運市一ト
壽巴
DECK2
卜1・卜1
l    I
ハハo.
⑫Dolbynoise・reduc量ionbu量ton
  《DOIBY NR》
⑬Reverse・sideplaybackbut量on(〈》
⑭Stopbutton(■》
⑮Fo㎜ard・$ideplaybackbut量on(〉》
瓦ame
④Open,closebutton(ムOPEN,CLOSE》
⑤Remotecon量rolsignalreceptor
  (Refer toAbout the remote control functionon page7.)
⑥STANDBYindicator(STANDBY》
  When the unit is connected to the AC mains supply,this in−
  dicator Iights up in standby mode and goesoutwhen the unit
  is turned on.
⑦Reverse・modeselectbutton
  (REVERSE MODE》
⑧Counterrese量bu量ton
  (COUNTER RESET》
⑨Recording・ba口ancecontrol(BALANCE》
⑩Display
⑪Recording・levelcontrol(RECLEVEL》
⑯Rewind,fastイorwardsearchbutt・ns
   (<国く唾,レ>レ》TPS》
⑰Pausebutton(llPAUSE)
⑱Automatic・record・mutingbutton
  (OAuTo REC MuTE》
⑲Recordbutton(●REC》
⑳Synchro・star量button
  (SYNCHRO START》
⑳Headphoneslack(PHONES》
⑳Tape・to・量aperecording・speedbutton
  (SPEED》
5
RS・TR575
■PLAYBACK
Either normal,CrO20r metal type cassettes can be used.
F一薗陶魍聞
/ 1
L
□1・1
5下糊▼o創
The procedures described below are an exampie of playback on
Deck1.
巨7H繭ER
昇騨、,喩,騰.。.)
 匿
一   1
I    I
1
1
II   DE
1
K1
1
》1
・1
         尽
匿ノ¶
Press OPENCLOSE, and
then  inSe『量 the  CaSSette
tape、
PreSS again tO CIOSe the caSSette
holder,
澱緊    唯し[鴫1
養○・
 鴫醗
[一Io『
F四            ,欄                 P附
■…r■⊂コ=⊃■<同r■rレレ藍
    罵閣苫2
脚瓢   卿▼o鳳瓢    閥
    蝋5
[釜1・1;10
盟〜噂
○ ㊥
)一!上1
[耶1荊
1陶
lDECK2
彫         』一一騨顧■■■『』
lll告甲i
f
PA占SE    l I一一一r  II
国  箇2 5回
匡7
        Each time the button ls pressed,the Indicator wi岡
        changeintheorder:;コ→¢)→⇔○.
                        一
        ;二二2:0ne slde only.
        (二;=):Both sides repeatedly(up to8times).
        ○○:Both sides,once only.
        (Refer to page7.)
REVERSE
 MODE
一  一   一  一      ・■レ
   ←
し仁.しし 面
LdB
−20  一幡  脚⑩  →5
監》 R
Press REVERSE MODE to
select  the   apPropriate
reverse mode.
一3 mO  十2  十4
一       一         一      一


一     一    ● 一     _
匿7
    Tape opening facing downward.
DOLBY NR
Press DOIBY NR to select
the apPropriate nolse・reduc・
tion sys量em.
      
仁_.__
  L
  dB 一{〜O    騨15    一ゆ
【》 R
Each time the button is pressed,the indicators wiII
changeinthe・rder:回」→回一・ff.
8
一G    −3  0口0   十2   十4
      
疋__ ,毛__
               一
Select the same type as that used for recording,
When playing back a tape which was not recorded us−
ing a Dolby NR system,press so that the indicators
go off.
回勲鬼塵犠繍ll漏』』』、1』
                  〈:To begin from the reverse side。
 一7 一ン 一 一7    =
 しLノ ._ _   回
PLAY 邑哩墨呂ロ1繋闘1凹鴇11零181理鵠も
 監》  RIIllll巳II1IIIIIII唇1
llluminates lndicatesthe side being played.
To play back on Deck2,in steps2and5above,press量he bu量・
t。ns(2and5》f・rDeck2.
To temporarily stoP P響ayback
    PAusE   press II PAUSE.
            ThePLAYindicator wiII flash,
            Press once again to resume playback.
   To stop playback
               PreSs■.
       黒
6一
      
      
十2  十4
RS・TR575
Reve畑ef麗ηe赫oη
The reverse function on this unit has three modes(;二2,⊂=),
○○).Read the descriptions below and select the mode as
desired.(Refer to step40n page6.)
ode
Oo
Only one side of the tape(either the forward side
or the reverse side)wi睦be played,and operation
will automaticaIly stop when playback has been
completed、
Both sides of the tape wlII be played repeatedly
eight times,and then operation wiautomaticay
stOP.
(lf playback is begun from the reverse side,the fo卜
ward side wiII be played seven times.)
When量here is a tapo in only one of電he decks
Both sides of the tape will be played once,and
then operation wiII automaticay stoP,
(lf playback is begun from the reverse side,the for・
ward side winot be piayed.)
Whon thore is a量ape㎞each of th●d㏄ks
The forward and reverse sides of the tape in Deck
l wiIl be played,followed by the forward and
reverse sides of the tape in Deck2,and after this
operation is repeated elght times,operation wi
automaticaIly stoP.
(lf playback is begun from Deck2,the tape ln
Deck l wibe played seven times.〉
Tape量ra》eI
Abo口孟孟hθremo孟θeoη孟1●01f口ne孟ゴ0η
The RS−TR575can be operated using the remote control provid−
ed with a Technics amp!ifier or receiver、
You can also tum this unit on and off by using the remote control
included with the amplifier or receiver compatible with the New
Technlcs Remote Control System.
Amplifier:SU−V500/A700MK21A800MK21A900MK2
Receiver:SA−GX1701GX3701GX4701GX670
(aS Of April,1994〉
[See the operating instructions of the amplifier or the receiver for
detas.]
During operatlon from the remote control,theRC.indicator
wi旧ight up.
一一一一R.C.
乏_ 仁 .し し
Deck1R.C.
indication
R.C.一つ ,}一
    _ し .仁_
Deck2R,C』
lndication
Abo郎訪e Do1わyηo蜘・redue孟ゴon
研5孟em
The Dolby noise−reduction system is designed to effectively redu・
ce the annoying high−frequency hissing noise typical of cassette tapes.During recording,the system functions to in−
crease the high−frequency sound Ievel,the sound,and then,dur。
lng playback,that same portion is weakened to bring it back to
the previous IeveI.
To1観e加hro麗8h五ea⑫honθ5
For(E,EB,GC,GN》areas only。
Connect the headphones(not inc塵uded》to the
headphones jack、
Plug type:1/4inch phone plug,stereo type,
i   l
琶賢○・蜜
猟■
『1ゆ『O順
口卜州
I   l
Avoid listening for prolonged periods of time to prevent hearlng
damage.
DECK1
事勢専
岬』○㈲
          Headphones
          (not lncluded)
DECK2
     一
l   I
This unlt includes two types of Dolby noise−reduction systems,
the Doiby B NR−type and C NR−type.
Dolby B・type noise・reduction
Noise is reduced to about one−third.
Use this system when playing back tapes recorded by the Dolby−
B noise・reduction system,such as prerecorded music tapes,etc.
DolbyC・typenoise・reduction
Noise is reduced to about one・tenth.
Usethis system forthe recording and playback of sound sources
that have a wide dynamic range and good tone quality,such as
FM broadcasts of live performances,etc,,and for playing back
such tapes.
Abou孟訪eDo1わyHX−Proheadroom
θx孟θn5fonεy5孟θm
ByfunctioningtoimprovethemaximumoutputIevelofthetapes
high・frequency range,this system permits recordings without a
reduction in the level of the sound sources high−frequency
range.ln addition,by using the system in parallel with this units
noise−reductionsystem,recording andplaybackwith agreatlyex−
tended dynamic range is possible.
AbOU孟伽a庇oma孟ゴe・孟ape・副θe孟
fu.neがon
This unit is equipped with the automatic−tape−select feature;it
automatica時y detects the type o
makes the suitable adjustments of
cordingly.
tape being used,and then
he bias and equa旺zation ac一
7
RS・TR575
■ABOUT THE ATC FUNCTlON
The ATC(auto tape calibratlon)function records a test signal in
order to automaticay set the bias,equalizer and recor・
dinglplaybackleveltotheoptimumrecordingconditionsinaccor−
dance with the characteristics of the tape being used.
The table below shows the conditions of the display and the
operation of the unit while the ATC settings are being made,
Example=Performing ATC on Deck1
①Biasadjustmen量
②Equalizer adjust・
men量
BIASis
 レ
囮LI1llII醐噂11
PLAY d9−20
dispiayed.
一一     一
刃1
     5蕉
囮PしAY 
L醜11匿1■1
    一婚  一  一6
J3−20
R朋19II1
is
EQ
displayed.
印蕪
一総  一,0 −6
R曝III611IIIgl1
Dlsplay
      一      一         一      一
      
     
     一     一    ● 一     』
111
−3 ロロ〇  十2  十4
腿■■1II           レ
Flashes

101闘
輔3 ロロ〇  十2  十4
1■1           1》
一      一        
一       一

一    一    ● 鴫    }
Unitoperation
bias is adjusted so that the output Ievel is the same
The
at400
Hz and at10kHz.
国uV一Φ
>Φ一一コα
                      o              覧
_一_一ノ↓
 」
一コ
00
一1一一一一・一一一一甲一一一一一一一一一一一・一一・一一一
       400     1K     3K     loK Frequency
                          (Hz)
  〆、
  グ    ●
 !∂ 、
    馬
,    、
/ \ /\
 一  一  −  一  一  −  ・  一  一  一  〇  一 
         噂
/ \\、↑
                  馬、
                   、、、
                    、
                     馬
                     、
                      噺
                      、、
                       、 、
                        、
︵Ωo
u︶
一Φ
Φ一
一⊃
Ω.
一⊃
0  0
, ■ 一 一 ■ 一 一 一 − ■ o , 騨 9 − ● 甲 ■ 一 ■ − ● 葡 9 ■ 9 顧 一 ■ 一 一 ■ 一 , 冒 . 9 ・ . 一 晒 一 一 ■ 一 一 一 . 0 9 . ・ − ■
       400     1K     3K     loK Frequency
/  \、...金_/
.  o
亀㌦亀 覧 亀
(Hz)
③level adjustment
LEVLis
/
  一
     ・琳
   一
 陣      一
 
 )
囮PLAY 
L111ll91
    一幡  一駅P −6
dB−20
R I9II瞳
displayed、
Flashes
一     一       一      陶

     
     一     一    〇 一     一
口
一3 口00  十2  十4
1           》
Flashes
8一
The equalizer is adjusted so that the output
level is the same at400Hz and at3kHz.
︵ロロ
℃V
一Φ
>Φ一
個コ
Ω.
一コO
一  一
0
乙_鷺上漁_\
o
ρ                         、
                           、
                           、
The tape sensitMty is compensated so that the
recording input Ievel and the playback output
ievel arethe Same.
Frequency
(Hz)
■SELF・DIAGNOSTIC
RS・『R575
lndicating Procedure
To indicate Self・Diagnos量ic Function
1.Check both Deck l and2are empty(no cassette tape),
  then tum on the power.
2.Pressand holdthe DOLBY(NR)button(formorethan3
  seconds),and also press the Deck2STOP(■)button
  forabout2seconds until the level meterchangesfrom
  constantly Iit to bllnking、
3.Insert a normai blank cassette tape,either A or B side
  of which has the erase preventing piece folded. Then
  close the cassette holder.
4、Press the Deck2FWD.PLAY(>)button and pIay the
  tape for more than l second,then press the DECK2
  STOP(■)button.
5.1nsert a normal blank cassette tape for DECK2,both A
  and B sidesof which have theerase preventing pieces
  respectively,and close the cassette hoIder.
  (NOTElRewindthetapeforlor2minutesbeforeuse.)
6.Press the REC(●)button.
10
一︸
E∋1・i
o.
1 1
lPOWER旧軋酬
Self・Diagnostic Function lndication
(Example》
I ndicating Position
⊂)1
・卜1
野覧○…δ.
DECK量
ロ主呂鱒□立
一.嘲酬   咽                     r      嘱一   }
卜・
   一・
回へiOf2「・11
  
  「.し
  し
  q吟一20  畠憾  一  一6
レ 臼
、        ,
i
﹀画
ld・1,)1
       
       〔.しコ
ー3 閃O  十2  十4
            レ
lC
DECK2
1
1
α
i
  This automaticaIly makes Deck 2 perform the
  foIlowing operations.
    Record an eight second portion with no sound。■》Record a20second portlon off400Hztest signal.
                                                                                   号
                                                    TPS・REVlEW search mode←Stop the unit
   (NOTE=Thetape hastobetaken up byplaybackforabout l minute.)
 7、Repeat the procedure above for Deck1.
 8.To check the self−diagnostic results,press the Deck l STOP(■)button for Deck1,and press the Deck2STOP
   (■)button for Deck2.
   These results are indicated in the respective displays.
9」f there is no fault,the counter display remains unchanged when the STOP(■)button is pressed.
To resume Ordinary lndlca量ion
To retum the display to normal mode,switch the power off and then back on again.
To have the indication apPear again,take the above−stated steps1,2and8.
NOTE=The seIf・diagnostic results are stored in memory.
       To clear this memory,press and hoId the Deck2STOP(■)button for at least6seconds untilCLappears
       in the Deck2FL display.
       Pressing the Deck2STOP(■)button clears the Deck l memory at the same time.
       Be sure to clear the memory after the repair.
Indication Text
SymboI
HO1
HO2
HO3
HO4 HO5
HO6
HO7
FO1
FO2
lrreguIar action of cassette mechanism.
(Example)Pressing the FWD PLAY button results in REW
PLAY action.
No recordlng can be made,orthe unit is placed in the
recording modethough the erase preventing piece has
been broken.
Pressing the PLAY(〉)button fails to pIay the tape.
Pressing the PLAY(レ)button causes the motor to rotate
though no cassette tape is in.
The cassette holderwinot open orclose when the
OPENICLOSE(▲)button is pressed.
            一
Presslng the OPEN/CLOSE(▲)buttton causes the
                       −
cassette holder to open after it has closed,and vice versa.
No treble is produced when a normal tape is played or
recorded.
Excessive treble is produced when a CrO2/Metal tape is
played,or the recorded treble is destorted and at a low
level.
When the PLAY(〉)button is pressed,the tape runs a little
and stops soon.
TPS does not operate.
Trouble
Remedy
The cassette mechanism mode switch(S971,S971A)and
plunger are defective.
(Check and replace them.)
The erase preventing switch(S974,S974A,S975,S975A)
contacts improperly,orthere is a shortcircuit.
(Check and replace the switch、)
The cassette half detect switch(S972,S972A)contacts
lmproperly,orthere is ashortcircuit.
(Check and replace the switch.)
The cassette holder openlclose detect switch(S803,
S804,S853,S854)contacts improperly,orthere isa
shortcircuit。(Check and replace the switch.)
The auto tape seIect(CrO2)switch(S973,S973A)contacts
improperly,orthereis ashortcircuit.
(Check and replace the switch、)
The automatic tape select(Metal)switch(S976,S976A)
contacts improperly,orthere isashortcircuit.
(Check and replace the switch.)
The haIC(IC971,971A,972,972A)is defective and,as
the result,reel pulse is out of order.
(Check and replace the IC.)
The PLAYBACK AMP IC(IC2)is defective.
(Check and replace the IC.)
9
RS・TR575
■DlSASSEMBLY lNSTRUCTlONS
AT『EN層『10N SERV醒CER,,
Some chassis components may have sharp edges.
Be careful when disassembling and servicing.
Ref.No.
  1
Removal of the cabinet
Procedure
   1
                    ③
                 .!ゆ
   ②猷.
                 舎
Cabinet
  ④
.ノゆ
o猷・§。鎌
           §馨§
                  輸
1.Remove the6screws(①〜⑥).
2.Remove the cabinet in the direction of arrow.
Ref.No.
  3
P『ocedu『e
  1→3
Removal of the power transformer
①②
 u
マ?
、  ノ㊦③
\・@⑤
\噸⑥
コ旗ノ
島而000
 11000
Power
transformer
1.Removethe4screws(①一④)。
2.PuII the front power transformer in the direction of arrow.
Ref.No.
  2
Removal of the front panel ass,y
Procedure
  1→2
CN3B CP1
田o   
/ n【/
CP2
  )r∠
︐励
1
■〕      /
lHUm期 i 〔,
盟/
1  /  /
A、一,,,1,i
1
//〕〕F売一d
※When connecting the FPC board to the connectors,
  connect the FPC board so that the both blue ends of FPC board
  are faced upwards as shown above。
1,Remove the2connectors(CP1,CP2).
2.Pull outthe FPC board from connector(CN3B),
Front panel assy
      講鎌
        ムi轄§
       ・齢 疇
               ③ 輔
                     ④⑤
3,Remove the5screws(①〜⑤),
4.Remove the front panel assy in the direction of arrow.
Ref.No.
  4
Removal of the rec amp P。C.B.and
main P.C.B.
Procedure
1→3→4
CN3B
一                              一
!廿
    一
  1
1川口ll旧
、  /
1 〔
CP1
                     冨
r『、 )
〔鼎、,,1,1
\     1
〕 \
FPC board
1.Remove the2connectors(CP1,CP2)。
2,Puoutthe FPC board from connector(CN3B)、
CP2
③④
 1
  ⑤
.ノ声
馨
Claw
                        Main P,C.B,
3,Release the2claws,and then remove the rec amp P、C.B.
 inthedirectionofarrow①.
4.Remove the5screws(①一⑤).
5.Remove the main P.C,B,in the direction of arrow②.
一10一
Rec amp P,C.B、
Ref.No.
5
Procedure
1→2→5
Removal of
units(DECK
1イ、
σ
the
casse廿e mechaniSm
1,
DECK
/o
Iever
Drive
2)
Cassette holder assy(DECK1)
窃Q◎
CasseUeholderassy
(DECK2)
謙Iid︵
 ③
   『
o
Cassette
DECK1)
    2
●       ◎哨
 ③
Casse賃eIid(DECK2)
1.
the
Push
the cassette
Cassette
unit
(DECK
、嵩
、圧
 ,
4
5.
Remove
Ref.No.
  6
Procedure
1→2→5→6
Remove the
the8screws(①〜⑧),
lever
holder
2)
in
aSSy.
drive
mechanism
i
「一
置o巨
2 魯
︑ら﹄③
Removal of
︑   ④
4screWS(①一④).
the direction
。曝、一
the
︑
   ③
ofarrow①,andopen
Cassette
unit(DECK1)
﹃ ︑
    口
  !
ぎ⑧
mechanism
F
mechaniSmangle
︑    ①ang
噺︑   ②
Mechanism
le
■』
︑魅﹄⑦
2.LiftthecasseUelidinthedirectionofarrow②,andremove
it in the
Drive rack
direction
ofarrow③.
BIue
1     ノ
     ノ
ゆ   Blue
\1
          FPC
    CNIA
          board
CN2A
\FPCb。ard
connectors(CNIA,CN2A).
/  r永
叉ノ
3,Push the
the cassette
4.Pull out
the
Ref.No.
  7
Procedure
1→2→5→6
→7
Balance
Rec level
knob
1,Puli out
the
2.Remove
3。Release
−l
k
1
drive
hoiderassy.
FPC
   〃
FL
rec
the4screws(①〜④).
the
4
B[ue
rack in the
board from
RemovaI
knob
     む
    o
P.C.B,
Ievel knob
claWS,
directionofarrow④,andciose
ofthe FL P.C.B.
           Claw
Claw
    κ
〜\ \
                  ①
      \も
          ③②
       ④
Claws
and baiance knob,
一11一
RS・TR575
Ref.No.
  8
 Procedure
Removal of the headphones lack
P.C.B.
※For【E,EB,EG,GC,GN】areas.
1→2→5→6
 →7→8
              Headphoneslack P,C.B。
●Remove the headphones jack P,C.B、in the direction of
 arrOW.
Ref.No.
 10
Procedure
1→・3→10
Removal of the rear panel
Rear panel
Ref.No.
  9
 Procedure
1→2→5→6
   →9
Removal ofthe operation(DECK1)
P.C.B.and operation(DECK2)P.C.B.
    θ1
コ・廻1
!
γ         ①
vイ       ②
   Operation(DECK1)
   P.C.B.
  ③
Operation(DECK2)
P.C,B.
・Removethe4screw(①〜④).
Ref.No.
 11
 Procedure
1→2→5→11
Removal ofthe motor P.C.B.
(DECK1,DECK2)
Reel motor
terminaIS
Capstan motor
te,rminaIS
・  For IP,PC】areas.
  、、
・轡
    ③
麟   監、
     一、⑤④
         『、⑥
1.Removethe6screws(①一⑥)。For【P,PClareas.
2.Removethe5screws(②〜⑥).For[E,EB,EG】
 areas,
3.Remove the rear panel in the direction of arrow,
■The difference types of capstan motor
 terminal are used forthe units.
 When assemblinglreassembling,referto
 the Fig.1and Fig.2.
※Notice for mounting the motor P、C.B.
1.Cut the bent terminal of capstan motor with
  anipper.
2.Solder while pressing the part with a e screwdriver
 Or an eqUiValent tOOL
Capstanmotortermina1
㎝tt㎏㎞m陥命母
e screwdriver
Claw
1,Removethe2screws(①,②).
2.Unsolder the reel motor and capstan motor terminals.
3.Remove the l claw and have the P.C.B.rise a Iittle.
Te『minals of.
capstan motor
づ一→
4               CNIB
      イ 、 ¥》       (DECK1)
 4   1
◎1
8
l l
O
Soldering iron
     轡詠甥騰2)
一ll蜥   。z
    N   電
        $旨
CS971
(DECK1)
CS971A
(DECK2)
Motor P.C.B.
Motor P,C,B.
indicated by hatching、
㏄tt㎏㎞mh禽
indicated by hatching。
Fig。2
Fig.1
4.Putting a soidering iron securely on the capstan motor
 terminal and raising the motor P,C,B、in the direction of
 arrow,unsolder connected pa口:,
Note)When removing the motor P.C.B.,pull outthe P℃B。
    severely because the connectors(CNI B,CN2B,CS971,
    CS971A)are connected.
一12一
RS・『R575
Ref.No.
  12
 Procedure
Removal of the power supply P。C。B、
1→3→10→12
Power supPly P、CB、
Claws
1.Release the3ciaws,and then remove the power supply
 P.C.B.
Ref.No.
  13
 Procedure
1→2一→5→13
Removal of the cassette holder ass,y
(DECK1,DECK2)
Claws
1や0ぐ
l I  l
I
 l  l
    I o⑰
Transformer base
o⑦
2.Release the3claws,and then remove the transformer base
 l aSSy,
Drive lever
l assy
Power supPly
P.C.B.
獣w
     ◎
・娘
1.Puliouttherivetinthedirectionofarrow②,whilepressing
 theclawinthedirectionofarrow①.
r
Ribofcassette holder
@漣
     \
            勉
               ⑤
     〆
Cassette holder assy
Cassette hoIder assy
2,Push the drive Iever in the direction of arrow③,and open
 the cassette holder assy.
                    昌
⑳鴨禽
》④
Boss of
drive Iever
Fig,1
4.Open the cassette holder assy so that the rib of the
 cassette holder assy is located to the position as shown
 in Fig.1,and then puout it in the direction of arrow⑤、
一13一
3.Operate the casse盤e holder assy in the direction of
 arrow④,andthenremoveitfromthebossofdrivelever.
RS・TR575
Ref.No.
  14
 Procedure
1→2→5→11
 →13→14
Drive rack
1.Pushthedriverackinthedirectionofarrow①.
2,Removethe4screws(①〜④).
3,ReIease the2ciaws in the direction of arrow②,and then
 remove the connector holder in the direction of arrow③.
Ref.No.
  15
 Procedure
Remova冒ofthe sub chassis assy
(DECK1,DECK2)
    , 一 軸 、
   !         、
  ノ          ペ
//C・nnect・rh・lde}¥
           !
  ¥
          !
   、、、一,
Removal ofthe capstan motor
(DECK1,DECK2)
1→2→5→11
→13→14→15
・Remove the2screws(0,②).
4.Removethesubchassisassyinthedirectionofarrow④,
5.Remove the belt.
Note:Care must be taken to remove the sub chassis aSsy
    with tweezers that the belt is not applied with grease.
Capstan motor
0
σ
⑨⑧◎
o
Subchassis
ass y
Subchassisassy
Q
[】
Belt
Chassis
aSSy
O
⊂)○
■HOWTO CHECKTHE MAIN P.C.B.
 1。Remove the cabinet,(See Ref.No,10f the disassembly instructions,)
 2,Remove the power transformer,(See Ref.No.30f the disassembly instructions・)
 3.Remove the rear panel.(See Ref。No,100f the disassembly instructions、)
③④
O
   。態。□
.81
Main P.C.B.
Power transformer
Power supPly P.CB。
4.Removethe4screws(0一④).
5.Instathe power transformer on the main P.CB,and power
 supply P.C.B、
一14一
Rear paneI
RS・TR575
  For[P,PCl areas.
ll
 \
,6,lnstall the r6ar panel to the main P,C.B.,power suppIy
  P,C,B.and power transformer with5screws(⑤〜⑨).
  For[P,PC]areas。
7jnstall the rear panel to the main P.C,B、,power supply
  P.CB。and power transformer with4screws(⑥〜⑨).
  For[E,EB,EGl areas,
︾層⑥
  !へ、
阜繭⑥
⑧⑦ ⇒
8.When checking the solder surfaces of main P.C.B.and
 replacing the parts,do as show.
■INSTALLATlON OF THE SUB CAHSSIS ASSY
         Idler gear
搾1騨)一蹄讐Bl
o
O
            ○◎
             十
I l◎ ◎ ◎1
0◎
o
o
o
\喚_________ノ
  /
び )
 O
 O
 ⑤  o
  ⑨
◎・
o。う「
FVVD side flywheei assy
じ「・1
・ 口・
ρo
9
Main P,C.B.
◎ ot
。 、
Boss(A)
/コ\
Be[t
Boss(B)
1、Position the idler gear in the between reel gear(A)and(B).
 (Mechanism stop Position)
Chassis assy
σ
    0
、o
Drive rack
Subchassisassy
  ノ ペ
/     \
3
(峯一一緬
   ④
ヤ②
     ③
、ノ
3.Push the drive rack in the direction of arrow.
4.Instathe sub chassis assy to the chassis assy with
 4screWS(①一④).
5.lnstallthe connector holder.
り\
     ①
2.Temporarily instaII the beltto the FWD side flywheel assy,
 boss(A)and boss(B),
Note:Care mustbetakento instathe beltwithtweezers
    that the belt is not applied with grease.
Belt
Tweezers
Belt
Capstan motor
6」nstall the belt to the capstan motor using the tweezers.
一15一
RS・TR575
■置NSTALLATlON OF THE CASSETTE HOLDER ASSY
Loading cassette
mechanism unit
!/〆レf
Drive rack
r
Ribofcassette holder
aSSy
≧一:・
Fig.1
1、Tilttheribofcassetteholderassyattheangleasshownin  2,Pushthedriverackinthedirectionofarrow①.
 Fig・1,andthenforcQthecasse廿eholderassytotheioading
@謬
就   \\ o l
       \
︑¥  
o
Cassette hoIder assy
     雇
casse廿emechanismunit      {レ
 Cassette hoIder
assy l
.瞭
       Hole
                 ②
β
0
、離
   Claw of rivet
4」nse吐therivettotheholeofcasseUeholderassy,
※Makesuretheclawofrivetispositionedinthehole.
■REPLACEMENTOF THE FOOT
1.Remove the4heat melted posts on the Bottom board assy
  with a pair of nipPers or similartool.
2。To replace the foot(RKAOO53−A)on the Bottom board assy
  melt the4posts with a soldering iron or instait with a screw
  (XTB3+6J).
                    延⑰
Cassette hoIder   (P
aSSy
3.Closethecassetteholderassyinthedirectionofarrow②.
Heat meited posts
Foot(RKAOO53−A)
一16一
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