Clarion DAC2010 User manual

vintagecaraudio.se
. . Ciarian Co ., ltd. Export Division-22·3, Shibuya 2-c home, S hibuya- k u, Tokyo, 150 Japan Tel : [phone] Fax: [phone] Telex: J22908 , J22152
Service Oept.-50 Kamitoda, Tod a -shi, Saitama, 335 Japan Tel: 0484-43·1111 Telex: J2962628 CLAFAC.J
clarion .
Service Manual
IIIII/IIIIII IIIIIIII/I IIII/IIIII IIII/III
V05483 .
. Published by Service Administration Section
Digital Aud io Tape
DAT {DIGITAL AUDIO TAPE)
PLAYER
Model DAC2010
{PE-5510A).
~ ---------- -- -- TABLEOFCONTENTS-- -- ------ -- ----~
. BSPECIFICATIONs .................... .. ..........................z
.
FEATUREs .......... .................................................2
.OPER~TION ................................................... 3-5
.SET DISASSEMBLY METHOD ...........................5
.EXCHANGE OF MAJOR PARTS OF ........... 6- 1O
MECHANISM
.MECHANISM OPERATION ........................ lQ - 12
.ADJUSTMENT OF MECHAII;IISM ............... 13 - 15
. BLOCK DIAGRAM ............................................. 16
.OUTLINE OF CIRCUITs .............................. 17 -19
.EXPLANAT ION OF I C's ..................... ......... 19 - 31
.• ELECTRICAL ADJUSTMENT .................. ... 32 - 33
.TROUB LE SHOOT I NG ............................. _. ... 34 - 41
(CIRCUIT DIAGRAM)
.TROUBLE SHOOTING ....................................... 42
(ME CHANISM )
.EXPLODED VIEW•PARTS LIST- ................. 43 - 44
(Mam section)
. EXPLODED VIEW·PARTS LIST .................. 45 - 46
· (Tape mechanism section)
. PARTS LIST··· ·· ··......................................... 47 -51
. CIRCUIT DIAGRA M ··········································52
(Head Amp. P.W .B)
.P RINTED WIRING BOARo ................................. 52
(Head Amp . P.W. B)
. CIRCUIT DIAGRA M- ................................. .. 53 - 54
(Mechanism Control P.W.B)
CIIP RINTED WIRING BOARD ......... ........... .... 55 - 56
(Mechanism Control P.W.B)
.C IRCUIT DIAGRAM ............. ................. ...... 57 - 58
(ECC P.W.B )
. PRINTED WIRING BOARD ........................ 59 - 60
(ECC P.W.B)
. CIRCUIT DIAGRAM .... .................. ........... ...61 - 62
(System Control P.W .B)
. PRINTED WIRING BOARD .............. .......... 63 - 64
(System Control P.W.B)
' IICIRCUIT DIAGRAM .................................... 65 - 66
(Dram P.W.B)
. PRINTED WIRING BOARD ........................ 67 - 68
(Dram P.W.B)
.C IRCUIT DI AGRAM .................................... 69 - 70
(DAC P.W.B)
. PRINTED WIRING BOARD ................: .... ....71 - 72
(DAC P .W. B)
. CIRCUIT DIAGRAM ...................................- 73 - 74
(RQo\ P. W.B )
.PRINTED WIRING BOARD ........................ 75 - 76
( Reel P. W. B)
.CIRCUIT DIAGRAM ........................ ............ n - 78
( Capstan P. W. B)
. PRINTED WIRING BOARD ........................ 79 - 80
(Capstan P. W.B)
. CIRCUIT DIAGRAM ....................................81 - 82
( Mo th er P.W.B & Power S upply P.W. B)
. PRINTED WIRING BOARD . ....................... 83 - 84
(Mother P.W .B & Power Supply P.W. B)
-1 -l
DAC2010 l

vintagecaraudio.se
121SPEC~FUCATHONS:
Mod el:
·
Number of channels:
Tape·
speed:
Number . of quantization bits:
Sampling.frequency:
. .. .
Frequency response:
S/N rat i o:
Dy namic range:
Harrnonie
distortion :
Wow & flutter:
Frequency adjust range:
Rated
voltage :
Power
consumption:
We i ght :
Externa! D im ensions:
oMain Unit
IIIFEATURES:
E
E
~
Rotating head type digital
aud1o tape..
2; stereo playback
8.1
5mm/s
16, linear
48kHz
or 44.1 kHz
(automatic selection)
20 -20,000Hz (± 1.0d8)
92d8 or great er
92dB
or great er
0.05%
or less (1kHz)
Below measurable l imits
Bass - 1 OOHz ±1O dB
Treb l e- 10 kHz ±10dB
14.4V (1 0.8 -15.6V)
(-
grou nd )
Approx . 20W (play mode)
Main
unit 1.6kg
Power unit 0.3kg
1 Digital Audio Tap e Player
This set is a ear tape player for playing pre-recorded
DATs (digital audio tapes). lt offers excellentresistance
to vibration, temperature, andh umidity, stable mechan-
isms,
a"nd is specially designed for operation in a ear.
2 Sean
The beginn i ng of the following prog r am is found auto-
matical
ly and played for 8 seeonds, after wh ieh the be -
gi nning of the next program is fou nd.
3 Repe at
One program can be repeated any number of times.
4 Au to All Repe at
When th e tape end or lead out is detected during play-
back,
the tape is automatically rewound to the beginning
and playback begins.
5 Mus ic Search
Any program can be searehed for at an average speed
200
times the normal speed.
6 Manu al Search
Fast- forwarding and rewinding at 2.5 timesthe normal
speed can be used to find seetions within a program.
Sound, attenuated by ab out 12dB (about 1 /4), is pro -
dueed
while searching.
7 Top Function
All operations are stopped, the ta pe.is automatically re-
woun d to th e tape sta rt pos ition , a nd playback sta rts .
lDAC2010l -
2-
8 ACC Off Eject Function
Even if the ACC switch is tu ·rned off whil e a tap e is loaded ~
in the set, the tape can still be ejected by pressing the
ejeet button. · · ·
9 Co nd e nsat i on
o Dew forms on the windows when the temperature in th .e
ear
is low and the ear is heated ab r uptly, or ' if there is
steam
or humidity in the ear. When th is happens; water
drop lets mayform in the set. This is cali ed eondensation.
if the set is used as such, the tape may · get stuck on in ter-
na! par ts, the setmaynot operate pr oper ly, and the tape
and parts may be damaged.This set inc lud es a devicef or
proleet i ng against condensation.
0 With this set, when the ACC sw i tch is turned on, a heater
automatically turns
on to prevent condensat ion.
The heaterturns
off automatically when the i nte rn a! tem -
perature reaches approximately 50"
C.
o When condensationforms, "dEW" appears on t he displ ay
when the car's A CC switch is tu rned on. ·
n
c When "dEW" isdisplayed, the pro tector is activated,and if
atape is insertedit isejected automatically.T he tapecan-
not be inserled until "dEW " tu rns off. ·
G Intemal parts may not be completely dry even when
"dEW" turns off.
Wait 10 minutes before using the set.
o Inwi nter in particular, the temperature and humidity in the
ear may rise abruptly if many pe o ple get in, and the re-
sponse of the condensation sensor may be slow. Wait for
several minutes after getting in the ear before using· th e
set.
CO MPONENTS :
0 PE-551 OA-A
Ma in unit
Demonstratio n tape
Mounting braeket
Mou n ting braeket (Universal)
Parts
bag ·
Hook plate
Cushion
Spacer
Tap screw
Tap scre w
Machine serew
Screw
N ut
Plate nut
Parts bag
{ Escutcheo.n
1
CTE- 001-1 00 · 1
300-6954-00 1
300-7 11 0- ÖO '·. 1
921.
-8541-00 1
330 -821.6-00 2
345 - 2934-00 1
345-36 53 -01 1
700 - 4016-81 2
700-501 6- 80 1
714-3005-89 2
716-0726 -01 1
722 - 0314 - 00 1 .
725-02 1 6-00 1
922- 14 70-00 1
370-3981-00 1

vintagecaraudio.se
OPERATION:
(j) Digitallndicator Display
@ MANUAL SEARCH Button (backward direction)
@ PLAY/STOP Button
@ Cassette Insertian Slot
@ MANUAL SEARCH Button (forwarddirection)
@ EJECT Butto~
(i) RETURN TO HEAD (TOP) Button
@ REPEAT Button
Playback
4) Turn the car 's ACC switch on.
~
MUSIC SEARCH Button (forward direction)
MUSIC
SEARCH Button (bacl<ward direction)
SCAN
Button
§
BASS Control
TREBLE Control
VOLUME
Control
@ BALANCEControl
NOTE:
• DIGITAL DISPLAY
Il DIGITAl DISPLAY
@ SEARCH lndicator
@ SCAN lndicator
3
REPEAT lndicator
ProgramNumber,Search Number, "
no" DigitalDisplay
Operation (LOAD, PLAY, STOP,
FF, REW,TOP, "REC"),
Program Time DigitalDisplay
• Insert-the cassette into the cassette insertion slot with the
side on which the tape is visible facing up. The cassette
will be drawn in automatically and playback wil l start.
If the cas'.>ette is inserted in the wrong direction it will be
.ejected dutomatically.
Do not force it out.
(1) lnsert the cassette into the cassette inser t ian slot with the s id e on
which the tape is visible facing up.
( 2) Once the tape is loade d. playback wi ll begin automatically and the
display will cha nge according to the subco das recorded on the tape.
l ·l
The display will be as
shown at the right, and the
tape will be drawn in a nd
loaded automa tically.
1·2 When the cassette enters
the set and tap e leading be·
gins. the display will be as
shown at the right.
• VOLUME Centroi
Adjust to the de:S i red volume. ~J------
The votume increases when
the centroi is turned c: l ockwi se
1()1.
NOTE:
Ttle digital audio tape has a
wide r dynamic r ange than the
cas sette player. so il the vo· ~
tume is turned t oohigh lnnon·
recorded sect io ns . th e sound
may be very to ud when play ·
b~oe k s: t~rtf: , r'lO~t~~iblv d•rn •et·
ing the speake rs.
• BALANCE Control
When the sontrol is turned
cloekwise l{ 01. th e votu,.
of the right s peaker is empho·
sized, and when tutntd coun ·
clarion=
r se . AACH,
L -88
terele><:kwise I(Ol . the vo· --------
lume of the leh speakt r is om -
phasized.
Il BASS Control
The sound is f lat when at tho
center (cli ek ) posi tion. When
slid to the tight, the bassis em- ~ ~~~~~~ !JJ
phasi~ed. and wh on s lid to the <u~t
le~ the bass is reduced.
• TREBLE Control
The sound is Ilat when at tht
cont er (dick) position. When
slid to the r ight, the treble is
omphasized. and when slid to -~=~~~~:::~
the l ett . the ueblo isreducod."
l ,-, Q_l
I....I....IIIU
(A) When no st ar t ID is detect·
ed or no start IDs are re·
cord ed :
(8) when on ly program num ·
bers are
reco rded: S
PL
PL R':J l
!A fler start ID detection)
t
Program number
~
(C) When both program num·
bersand program timesare
recorded (alter start ID de·
tection), or for pre ·re·
cord ed tapes:
2 i
Program time
• PLAY /STOP Button
o When prossod duting pla yb a ck . playback stops .Press
"oa in l o mt:um,. nlillvhn r lc
NOTE:
In th e stop mOde. the tape ;s wound in the e:assone,
and on ly the PlA Y/STOP and EJ ECT buttonswill func-
t ion.
• Wheo ptes.sed during tl'\e music se a rch. sea n~ repeet.
01 top func110ns. the tunetlon is stopped and ptey~t
begins automatjeally.
• Wh~n P~YISTOP bvtton l• pre~oMcl d~ r i nt pllo'(bnk :
CH The d•sPI•'r w.ll bt • • ahown
fl t lMug t'l! tnod t l\tlltl)tw•tl l S tnp l
::;: •w .t y hot,. rO.Il•nQ 1 U
•
121 When tk• .. pe ht • mov ed l l
~•Y from to t.t l.ng ptl .t . the
--
--
&s;~~y vn11 c.Nnoe u •hown
at :ht: roght.
Ovring music n•rch l forw • rd dir.etlota}:
C1) Out O&o~•• • <h.mt'dtt:·
lrM. ARCM l
FF l
ptayd be •• shoohn •t the < 2,
r'!Ohl -
121
ViNn;,. PI.AY I ~ T OP bu110, •
is pcessed lplaybfct ttertt) ~
l
R~ j
PL
-3-
!!l EJECT Button
When tho EJECT hutton i$ orA~!I:,.,ti , ~ Il ~o<H•t~t:on• •t nn
and t he cassetta is e)ectod.
NOTE;
The cassene can be ejeeled by pressing the EJECT but·
ton even if the ACC switch (the ear key) is turnedoff.
g MUSIC SEARCH Button
(forward direc~i~n}
• When the MUSIC SEARCH button is pres .. d. the be·
ginning of che following program i$ round.
If Ple"'~.-u cotutnuous1y. the searen numDCt i ncre•ses
one at a time up 10 99 or until thebutton is releesed.
• lllhe end of the tape is reached duringt he seatdl op.
e rat ion, thO see r eh f unc t ion is stopped, the tepeis au·
tomatleeity rewound, and playback begins from the
start of tho tep e.
o This but1on will not t unetto n du ring th o stop. scan. or
eject oporetions.
l DAC2010 l

vintagecaraudio.se
• Vlhtn ... ••ch twn'\ber*O* or •
'Tht tM.Ittof' wtl ftOttunu10n
,.lldt..,...ytcl;
n-. M•rch ~~ In 0. UM 01\d.c.t.\e• !he numbet Ol lhc ptO•
QlaM~h -o- •• thtOftOIAti.l)f'Oogf~
C1) Whet1 the MUS.C SEAACH but
1'""""",'
FF I
lOt' tS PftSS.-d. N MkC:h
__ ,., . ...,.,.
' ,,
w••c" opttabOft suru
1·1 Whtn lht t~u lO .. de•
l''u~,
FF
l
Ct<ttd. t.M M_, ch nvtnbtt
btC:OMtt •tr \ u ~
"'
Whtt1 the'M..trct'l ~·••.on •• compttltd, pa.ybKk s164Cs . <~nd
IM dl11)t.ay Ch;)ftOt$ tc:<Otdont 10IM subc~ & t<I'(:Otdtd On thoq
UIPt'.
tAl W hen Of'I'Y "tt1t0a 110
l
O•
R~ ~
ttCOf<!Od :
IL
181 When Or\ly proguM nvm•
bOrs ••• ulcorde<t .
IAfttr llolt! IO<!olectlonl l B PL
R~ i
t
Ptot t lm numbtt
ICI Whtn bo 1h PtQGtlm nvm•
l
btff tncl I)I'09r.am loMtt
••e •«cwdtd lthfol s1.an
ti)Oele<:110t'1),0t lOt Pfl•
rtcOtdtd 1.tpes:
B MUSIC SEARCH Button
(backward direction)
!
B
n·nn
LJ·UU
l
J
Ptog~.am 1 1me
~ ~- H ::: H -.;.-c
ij&®re~sn~[
o Whcn th is MUSIC SEARCH bullon is pressed.the beginn·
i ng of aprev•ous program Is found (or tho beginning of the
eurrently ploylng progr um tr the button is on1y pr cssed
onccl.
If pressed continuously. the search number decreases
one .0 1e tim o to - 99 or umil tho button is ro lc ascd.
•
If t he beginning of the t ape is reachcd during the search
opo rali on, t he search function is Slopped,t hc tape is au lO·
matica11y
rewound, and ploybac:kbegins rrom lhc stan of
th e tap e.
• This bu11on willnot funcllon<lurlng\h~ ~ lo p. s~ a n, or cjcct
operat1ons.
• W
ho n seareh number "0 .. or .., .. is disp l aycd:
The button willnot runetion.
NOTE :
If no start IOs ore reeordod, the music soarch operation
willnot f unction (eithor backward or forward).
(1) Whetlll'lt PMJS.C stARCH Wt · l
r~A10t t1
REW I
1on 1s preued, tlw Ma4Ch
numbtt b+comes ~ . ,.IM cM
HIICh OMt•liO#'I ft.atU
' l,
1·1 Wl'le.,ChcliU.IIOtSOt
lt<ted . the a•nrc:h ~~
1'"~ ,
REWI
becomea "'O"'
' u.
t2l
WN n 11\t' HtfCh ot)tfftfOtiiS ~~ . pt.ayb.Kl.UftS . MM~
the dot:Qbv c~ acto.cs.no .o rht ~OCSf'S rt<oreled on the
....
W ~o-nto,IU~\IOstt•
l PL R
q!
tK~Ckd
t81
When Oftlv 1)1'09ftm num · l
R~!
btn. ~· ft<Ot6Cd
6
O•
(Afttt $(III 10 <ltltCIIOft) t L
T
Prour•m numbtr
l
ICJ Whtn bOth Pf09r•m num·
l 6 n
·n n l
boll 1n 0 ptOQIIM tiMtt
at • rtc:OrtiOcl ttlltr •toll
U·UU
10 dcttct!Ofll, Of ror l)rO· 1
f~COIG. O ~'"* ·
Ptog••m time
l DAC2010I
IJ MANUAL SEARCH Button
(forward direction)
o While t he MANUAL SEARCH buuon is prosse<l, tht vo·
l~me is cu t to 114 and 1he tape is tasHorwc:uctcd ot 2.5
ttmes the normal speed.
• When the tape end or lead out area is detected, fast -ror·
warding stops . the ta pe is aYtom.otiea ll y rewound. and
playbaclc starts .
CH White tho MANUAl SEARCH buHon is PICIUtd, fUHOfw f iC:hf'9
sta rt $, and the disl)(.av d'ltngos acco.du'19 to tht subeodes ,,.
couk d on the t ape.
lAJ WM!n no ~''•" 10 . ,. de·
l tCit<i Or no SII H 10$ lit
f ftCO tcfed:
18) Who-n ontv prOQtilM nuM·
betS a.re tCCOHiefl:
{Ai t ~t $tJIIIO df'tttlon,
ICJ When botl'l ~ogt•m tlo\IM ·
bcrs and progr.a.m lotneJ
.atf! recorded (.afte' stan
IC>Mtee111)nJ.CNfot11Mt·
r~dedt-19es :
F .C
3
3 2:
:-:l
C21 WhM the l:te)e l'nd Ot leM l
.... , .. ,.4< .... 04 , lt>< .: <f.. . 28 r: _. ,'2
gtam •• tirghl) I.....!=.~ __ .,!,D::.:....!.!, :..J.
1·1 Tht d!splty eN~ .as
~ •t tJw •.gh.l, eho
u.~ i$ kttOma&e•ltwt , ••
WOI.Incl. ill\d p&a.'(O.K:\bt
... ~
• MANUAL SEARCH Button
(backward direction)
•
TOP!
e While t his MANUAl SEARCH buuon is pressed. th e vo·
lume is cut to 1/4 and t he tape is rewound at 2.5 ti mos the
notm al speed.
o
When the t ape s1art or lead in area is detccled. rewinding
stops, and playback begins automatically.
11) Whlk- !hos MAKUAl. SEARCH buuon 1S J;ttU IIC t. ·~
SW!I'lS, and lM d•wlf.Y (~~ KCCHdong ~ ll'loCi WbCOdt$ rt
cCHde<t on lhc ~peo.
LAJ Whe:n no '-t.ltl 10 '' dt ·
t<!ded or ao s•ar•ICH ~o
,_ ...
{8) When ontr &1109'~ ~tUM •
boers a•• JKOidc<l
&Ah..- sQfliO 6twc-~
1CJ Whtn ~ P'Of'tm num
tMfs ~ Pf09ftM lllf!IM:S
ro·~U<.=i -e:';, "";i~
tC<Otd-edu.-~
12l 'in.t-n ctw ttpe St.art 0t ~Kl...,
~~·~ rJckt.t<.IH
t3) The d.splty c~u u 5hown
;u the ughl.
-4-
2
•
'1:521
n - nnl
LI · UU
PL Rij l
III RETURN TO HEAD (TOP) Button
u
When the TOP bunon is pre$$ecl, the current operat i on is
stoppcd. the 1ape: is autom:atically rewound to the ta pe start
pos•t•on.
and playbackbegins. t200 timest he normal speed)
TOP!
lll 'o'lhtnlhtTOPb\lnoniS
I)I'Us.d.' IM <kl~v boKornes
as shoW~'~ .at the ' ovh'· and che-
••~ o: JlOW'Ovftd
11) WMn O~ t.Jpo "*'''' dtttc:.ed. •~11'19 stops . pJ•yN<:I( bt-
SIInt. •MJ t he ~·so'Oy c~~s KCOid•no to tN subcodes rt·
COtdl"d On the~·~ ·
tA) Whtn no st~r t lO os de•
tect etl 01 no S.ta ri iOS e re
U!COidcd :
18) W~n only p1og r •m nvtrt ·
betsat~! rocor<tc<J .
tAhot stan 10 dettci JOtt~
tCI Whtn bolh program puM·
bo rs 1M ""09 t-Dm toMts
att rcc.of<leel teolter stall
10 dctccbon), 01 fOr pre-
reco.dcd1.apes;:
• SCAN Button
PL R~ j
PL R~ l
Pr~ r .a m numbtr
~
o When the SCAN bunon is presse<f. the bcginning of the
following pcogram is found aulomaticalty and playedback
for approximatcly8 seconds.a he r which the beginningot
the next program is found.
• Whcn set to the sean mode, the · sCAN " indica1or lig hls
• When t he tape reaches the end during scanning, it is re·
wound lO the bcg i nning of th e first program and scanning
rcsumcs.
• Scanning continucs until the sean mode iscancelled. (for
playback, press lhe PLAY/STOP button.)
• The MUSIC SE ARCH bunons wj ll not lunction d uring
scanning.
NOTE :
Scanning is no1 possible if no startlOs are recorded on lhe
tape.
t1) Wl'lertlht SCAA buHon IS PIC!:SSed . sc.an.rvn9 btQ.n$, and lhe d1S •
pa.y ct~.al"lgts -KCOrdn'IO 10 1 ~ sut.eoelu ct<Qrde<l on lhe: t.aoe.
tAl Whtn no s~u 10 os cJto -
ffC'tt<l
Of no :~-ter t IOs"""
rO(:OI'IJt'(l
fB I ~nonly~O'VfoiM ~ "'
ben we t.-corded .
Whctn both JHOOtam nun1
beuMICI Pt09'JM ~
~Cftc:OI'Oed
rOr l)f if of'KOI'ded U1PH
tCJ When bolh prog,.,m nvn•
btrs atld p~ogram bmcs
,_.. 'O'tOI'Cit:d,Of IOf IJI C'
rt'C<H'df(ll la,l)t$"
'-l
n·nn
SCAN l
Lf·UU
K•• l
'-/ 0:08
131 To SIOit S<"3Mm9 aod pl •y lho t<Jp(t . !P'0$5 100 PlAV J STOP but ·
, ..

vintagecaraudio.se
• REPEAT Button
11 Auto All RepeatFunction
(1» \".-"hen :ht- AEPEAT bwltond p.~tSit<l, ~ "Rl'1.Ar lf'ICS•U:Ot
If the tape end 01 lead out areais detected duling play·
back. thetape
is automatically rewound to thebeginning
and playback rosvmos.
I'Sh <s. a:"ld tne ~ 5~1V chf"9U aeco·d ng to IN Sllb<:Odes re·
Cot~Ontl'let;t~
lAJ When no st .IH 10 ''d t·
! tcl•d o• no st3rt lOtort
l
r e<or(l'~
CBJ Whtl'l ol'lly p.rogr~m n~o~m•
l 3
ber$ att r~("Oidtd
w:~: n~r: 10 det•(;tfOftl t
PL
O•
t L
lt\CIIC.:IIOI'
!
Fis l
Fis l
• Non-recorded Section Detection and
Display Function
Whon the beginning of a secti on on w hic h no signels
have boon rocordcd is detected.t he disp lay bocomo su
show n below.
• When theREPEAT button is p1essed,thep1ogram atthal
point is repeated. Ptogtltn ~utnbtr
• When the repe at function is :ur ned on. th e *REPEAT'" ind~ 
cator tights.
• The REPEAT bunon \".till not function during the music
search oper at i on ~except w hen searching as part of tno ro·
peat function).
• The: program is repeated until therepeat funct•on is can·
celled.
(C) Wht~ both Qtogtii'TI t\VM·
l
~s P!4 ptogr~ """",
-.:-e r«~~ (1;1:"' s:..n
ID~:cc:-...ot11.orl0tpre
tK.Otd-tdUPH
l
"'"Al l
3
3:5Y
t
Pto;ram t.nt
l
• The repeat function ean be cancelled by pressing the RE·
PEAT
bunon.
t2J WM:n lM tolowW'Ig SIIU 10 11 dt!tCtM Ot ...,hen ttlt S.~ out
.f'Cf 9! ~fP't C~ !J 4t1K1c~. IM 009 "'n•ng Of Ulf CVHtn:ly pti'y·
•no
p;ogtam JS fQI.Ind
(Tht- ~pe •s •evo.'Ound outO~lJUIIyl
NOTE:
Repeating is
not possib!e if no stan IOs are recorded. tAl
Whe n only star' lOJ'''
l
r ~t\rde-d'
t9l W Mn on:y ptograM ftoiii'T'·
bers ore record.-d. l
\' ~1'1 both progrom ftoVrn·
bt-rs1l'ICI progromt•l'l'lotS
~1e re<ocde d.
For prt·r«:ordeCJ tl~' '
CJ.n t l'ws UM, Chti PfOO'IM
osnotdd~J
REw l
3
REwl
D Sampling Frequencies
Thoro aro thr ee t·y pcs of sampling frcquencies (the fre ·
quency at which
t~nalog audiosig nals are convertedi niO
digital signals), 48kHz, 44.1kHz, and! 32kHz.
48kHz... Used
when recording on DAT decks
for home use.
44 , 11cH: ... Used for commerc ial DAT music
tap es and COs .
32kHz... Used f()(.satellite broadc as ts . t iC.
This p roduc t is for playback of tapes eecordad wi1h a
sampli"9 frequency of 48kHz 01 44.1kHz.
11 c.annol play tapes rocordcd with a sampling froquency
of 32kHz.
(3) Wbe-n thot be9lftntng of a PfO(IfM'IrS fouftcS, p&,yt)loe\: begltrS. M'~
W dis~ cNnfe:t ~OI'fol"'g 10 11'14- t.ubeo6U fe<:Oickod CM' t1'>e
(If such a tape is loaded, "32k" wm appear on the dis·
pl•y and the tape w ifl be automatie:a!lyejec-ted.)
.....
W Wtw:n GNy start ID$ •~•
rtcOI'ded:
(81 Whtn only ptogrem nvm ·
b4ts ,.,. t ecorded:
(C) VJ'Mn both prog.r•m nw'ft •
ibe'J$ -""' Pf0$1'.,.. wntt
,e tecOt<:ed~ 01 lcw cw•
rKOrdc4\lpu
.WIR ING:
WIRE CONNECTION -1
Makesure yo •udisconnect the negative( - )lead from th e(-)
terminal of the battery before installing the unit.
Thiswill prevent a ny accidentalshortcircuiting du ringinstal-
lation.
DAC2010 HEAD UNIT
Accessorv + 14.4V
POWERUNIT
Black Ground (to metal
part on cad
The ignition lead is a positive power input. lt s houd be con-
nected
to a circuit which is turned on when the ignition key is
in the "A CC" position.
l
l
l
lnd.u :or
!
R'g j
PL
3
PL
T
R-g l n
''OG""" numbet
l
3
.... ., l
n - nn
LI·UU,
i
Progtam tome
WIRE CONNECTION -2
Makesureyou disconnect the negative( - ) lead from t he(-)
t ermin al of the battery before installi ng the unit.
Thiswill preventa ny accidental sho rt circuiting du ri ng instal-
lation.
Lett Right
Speaker Speak er
Illumination +1 4.4V
To battery + 14.4V
Accessorv + 14 . 4V
POWERUNIT Ground
(to metal part on ear)
The ignition lead is a positive power input. lt s houd be con-
nected
to acircuit whic h is turned on when th e ignition key is
in the "AC C" position.
-5-
l DAC2010 l

vintagecaraudio.se
Dl SET DISASSEMBLY METHOD
1!1 Name of Each Part
Q Dismounting the Mechanism
1) Remove the escutcheon. (mach in e screw x 4, f! ex. x 1)
51 EXCHANGE OF MAJOR PARTS OF'
MECHANISM
1 Method of Exchange of Drum
Upon
exchange of a drum, adjustment of the tape pass
(incl. DPG phase
confirmatian and ATF pilot level
confirmation) and confirmation of error rate become
necessa ry .
(As for details, refer to Adjustment of Mechanism.)
l DAC2010 l
-6-
When handling the drum, the following should be noted.
NOTE) 1
Do not touch the drum with empty hancts.
Be
sure to use specified g!oves.
2 Handie the drum with care so that it may
not be dam ged or hit other parts.
3 When mounting the d rum ass'y, confirm
that the ass'y is tightly fit on the surface.
Carry
out the drum exchange, foJ!owing the drum
exchange procedure.
The d rum exchange procedure (Oismounting Pro cedure)
1. Dismount the inechanism contra J ass'y from the
mechanism. (machine screw x 3)
2. Pull out, wi th care, three connectors and the flex.
P.W .B connected to the mechanism contraJ ass'y sothat
they maynot be damaged.
Mechanism
contra!
fitting screw
(M2.6 x
3)""
l
Mechanism contraJ ass'y
Drum exchange procedure a
Dismounting
the mechanism centroi ass'y
3. Removing the J ead wire of the dew sensor (soJdered
spots x 2), take off the earth processad item from
Mechanism (machine screws x 4) PositionaJ adjustment
of fitting is expJained separately.
Earth
processed i
tem
ism
Earth processad
it em
fitting screw (M2 x 3)
Drum exchange procedure b
Dismounting
the earth processed item

vintagecaraudio.se
4. Remove the shield plate A. (machine screwsx 2)
5.
2 Remove the RFamplifier processed item. (machine
screws x 2)
3 Extracting the connector of the drum · signal wire,
remove the lead wire from the RF amplifier. Be
sure,
at this time, not to damage the drum signal
wire.
RF amplifier processed item
RFamplifier processed
item fitting screw
(M 2x 3)
Drum exchange procedure c
Dismounting the RF amp. processed item
Remove t he drum heater lead wire (brown) from
the phototransistor P.W.B. (soldered spots x 2)
Soldering direction
o
Phot ot ransistor
P.W.B
~~:Hl~::_ Soldring the drum heater lead wire
(brown)
Soldered Spots of END Sensor P.W.6
Drum exchange procedure d
Dismounting
the drum heater lead wire
6. 1 Remove
the d rum ass'y. (machine screws x 3)
2 Litting
the drum ass'y, pull out the flex. P.W.B
from a'.
Drum ass 'y fitting screws (x 3)
(PRECISION
SCREW 739-205 0-17)
b
Drum exchange procedure e
Dismounting the
Drum ass' y
to c
7. Mounting procedure __.. Reverse procedure of that for
mounting
2 Dismounting the capstan motor
1. Remove the motor co ver. (machine screws x 3)
2. Remove careful not to damage the flex. P.W.B.
Motor cover
fitting
screw ~-ttre-==-----1~~~~
(M2 x3) ·
(back
of
mechanism) 0
_,...--~-;..,.
Flex. P.W.B
Dismounting
the capstan motor
3. Removing lead wire of the dew sensor (solde red spets
x 2), dismount the earth processed item. ( sc rews x 4)
Earth processed item fitting
screw (M2 x 3
r<:::.----
Earth process1~d -___:=R:~~
item
Earth processed item
fitting screw (M2 x
3)
Dismounting the capstan motor
-7-
l DAC2010 l

vintagecaraudio.se
4. Remove the capstan motor . (screws x 3)
@
Capstan motor
Caps ta n motor fitti ng screw
(PRECISION SCREW 739-1730-17)
3 Dismounting the Reel Motor
1. Remove three screws on the back of the mechanism.
Reel
motor ass'y
(back of
mechan ism)
Reel
motor ass'y fitt ing screw (M2 x 3)
Exchange of reel motor
l DAC2010 l
4 Mounti_ ng . and Oismounting the sub-base sub-ass'y
{dismounting)
1. Remove the capstan motor. (Refer to Di smount i ng the
capstan motor. The flex. P.W.B. shou ld also be dis-
mounted from the connector .)
2.
Take off the special washer E (in the fig. of page 9)
at the tape loading end po si tion to removethe soldering
of Sec. A.
-8-
C-L-M-SUB-Ass'y
empty flex.
Soldered
spot of Sec.
A switch
A
Dismounting the Flex . P. W. B from the C-L-M-SUB
Ass' y
3. Taking off the mechanical control ass'y of the. left
si
de (refer to Procedure a of Drum Ass'y Exchange),
remove
so l dered spots (2) of Sec. D.
Lead Wire
Control of
Left Side View
Dismounting the SW lead from the sub-base sub-ass'y
4. Remove sub-base sub-ass'y (screws x 4)
Sub·base sub-ass'y
fitting screw (M2 x
3)
Sub-base sub-ass'y ---
fitting screw (M2 x 3)
tci g
Dismounting the sub-base sub-ass'y
to f

vintagecaraudio.se
{Mounting)
1. After confirming that the hale of the sub-base sub-ass'y
and the shaft are fit to three shafts (a, b, c) of the part
fit on the chassis and the hale of the T plate ass'y on
the chassis, mount in the reverse procedure of that
for .dismounting.
CD
to c
®
to h
Fitting shaft on the chassis side of sub-base sub-ass'y.
~
e
d l
Sub-base sub-ass'y (rear view)
Fitting
hole of sub-base sub-ass'y against shaft on chassis
h
Special Washer Position and Shaft Position on Chassis
for Dismounting Sub-Base Sub-Ass'y
Chassis
front view
Fitting hole
of sub-base sub-ass 'y shaft against
chassis (T-plate ass 'y)
5 Exchange of C-L-M-Sub-ass'y
1. Take off solders from 1 to 14.
2. Remove
the C-L-M-SUB ass'y from the mechanism
ass'y A
and the earth processed item B. (machine scre ws
x 4)
3. On mounting, fit a, b and c to a', b' and c' respectively.
Earth processed item
C-L-M-SUB ass'y c
t;tt;ng '?'"" (M2 x 3)l&h
-. ..:::....._.....----= ,;;;.C-L-M-SUB ass'y
fitting screw (M2 x 3)
Exchange
of C-L-M-SUB Ass'y.
-9-
j DAC2010 l

vintagecaraudio.se
6 Exchange of Cass e tt e Hol der Processed Item
1. Remove the earth processed item.
2. Remove the mechanism control ass'y.
3. Reniove the mechanism control bracket.
4. Remove
the photo-transistor P.W.B .
5. Remove C-
L-M - SUB ass'y.
6. Remove
the cassette holder processed item fitting
screws.
(x 4) (a, b, c, d)
Cassette holder processed item
fitting screw
(M2 x 3)
7. Remove
the cassette holder processed _item from the
mechanism chassis processed part.
8.
On mount ing, pass the lead wire e through theholeon
the left side of the cassette holder processed item.
Fol lowing mounting of the cassette holder processed
item, confirm dowel tightness.
Cassette holder
processed item
Cassette holder
processad item
Hole positi on
of the left side
fitting screw
C-L-M -Sub ass'y
(M2x 3)
Maehani
sm chassis
processed item
III MECHANISM O PE RA TION
1. Loading
1. Cassetta Loading
i)
When the cassette is inserted, SW1 is turned on via
Cassette guide,
the C- LOAD LINK A and C- L-SW
Ll NK A. { CD -+ ® )
l
l
l
l
:o
:[EJ
lDAC20 10 l
Cassette
..--::J.A--_ sw 1
(bac k-in SW)
-1 0 -
ii) When SW1 is on, the cassette loadi ng motor 1 rotates,
where, through C-
L-G EAR _A, C-L-G EAR B (not
indicated
in the fig.) and C-L-G EAR C, C-L-G EAR ,
D rotates. At the same time,
the cassette loading
plate is
sh ifted by GEAR ROLLER which rotates
C-L-LINK B and, through C-
LOAD LINK A and.
the casset ta guide, horizontally loads a cassette
!CD -+ @).
C -L ·GEA R F

vintagecaraudio.se
iii) Upon ope rational comp l etion of cassette leading in
horizont al position, the cassette leading plate shifts
by the mo tor 1, which rotates the corresponding
guide
arm and lowers the cassette holder having a
cassette.
Simultan ea usly, the lid link corresponding
to the 'cassette toading plate is rotated and opens the
lid of t he cassette. (G)-+ @) l
Further, by optical detection attached on the C-L·
gear F,
the motor 1 is turned off to complete casse tte
leading. (Fig. ii) @)-+ ® l
Cassette vertical
leading
started
Cassette leading plate
Cassette
vert ical
leading
completed
2. Tape Leading
Guide arm
Lid link
Lid
of cassette
i) After completio n of cassette leading, the motor 2
is
turned on and driving force is transmitted to the
gear array indicated in the figure via a worm.
((j)-+@l
Motor 2 (tape leading motor)
<D
-11-
ii) Driving force of the gear shifts the pinch leading
block
to a position of the pinch block stopper via
the pinch leading arms A and B; the loading block R
to the stopper R via the leading plate R and the link
plate R;
the leading block L to the stopper L via
the roading plate L and the !ink plate L. The link
plate
L, at the same time, shifts the tension arm via
the ten sion pl ate A and the tension plate B.
Tape, at this time , is held being w ound round the
drum by . 90 °.
Stopper L
Tension plate A
Pinch loading brock
Link plate R
Loading plate R Pinch
lo ading
arm B
l DAC2010 J

vintagecaraudio.se
iii) After these shifting, the gear array continues to
r otate which tightly retains each corresponding block
via spring. Then, the tape load SW is turned on by
the tape leading gear K via the tape leading switch
plate
B, which stops the motor 2 to complete tape
loading. (
G)-+® )
Tape leading switch plate B
Tape load SW
2. Play
When the tape load SW is on, the motor 2 stops and
instead, the motor 1 rotates which shifts
the cam plate
along
the cam face ofthe C-L-G EAR F. ( CD -+ @ )
C·L·GEAR F
Camplate
(C - L-M-SUB Ass'y)
The pinch action plate
is shifted by the cam plate which
tightly holds
the pinch roller and set the tension arm
free. Subsequently,
the motor 1 is turned off byoptical
detection providedon
the C-L-gear F. ( CD -+ @ )
Tension arm
3. FF/REW
Since this involves driving of the drum reel motor when
the tape loading has been completed (in PAUSE state),
explanation for
the operation is omitted here.
4. EJECT
This, corresponding
to reverse operation of Play,· Ta pe
Leading, and Cassette Leadi ng, is carried out with
motors 1 and 2 being reverselv rotated.
While in Play,
the motor 1 isturned
on, the completion of tape loading
(PAUSE state). is detected optically on the C-L-G EAR F,
the motor 1 is turned off and, then, the motor 2 is
turned on. After each block is taken in to a cassette, the
T-L-GEAR D rotates and turns SW on via the T-L-SW-
LINK and T-L-SW-PLATE A, which, then, turns off the
motor 2 to complete tape unloading. (STOP state)
Subsequently,
the motor 1 is turned on once again t0
start cassette unloading, where the switch, being turned
on by the C-L -GE AR D via the C-L-SW-LINK B, turns
off
the motor 1 and completes EJE CT.
T-L-SV/·
LINK
Tape
unloading
SN
T·L·GEAR D
(Inside sub-base sub·ass'y)
C- L-GEAR D
EJECT
ending SW
C·L·SN·LI NK B
(Inside C-L- M-sub ass'y)
5. Stop
l DAC2010 l
(j)
Pin ch action
plate
-12-
As has been partly explained in ltems 1and 4, the state
of STOP includes periods from completion of cassette
leading
to start of tape leading, and from completion
of tape unloading
to start of cassette unloading. In
this state, brake is applied to the reel and all motors
are turned off .

vintagecaraudio.se
D ADJUSTMENT OFM ECH AN IS M
1. F itting the Start Phototransi.stor
The start/end phototransistors detect the starting
andending
time of tape.
When fitti ng is not appropriate, even during tape runn-
i
ng, the device may come to a stop.
Adjusting Method
Tightly fitting the phototransistor P.W.B processed
item as is shown in "Photo TR Fitting Drawing" sot h at
there is no clearance, fix with rnachine screws. (M2 x 3)
"
Side plate R ass'y
o o @ processed item
....__________ Phototransistor P.W.B
Photo TR Fitting Drawing processed item
Sld• pl>t• R'~""'' ;,.m·. ~
l ;·
Phototrans istor P.W.B
pro cessed i tem
2. Fitting the End Phototransistor
Adjusting Method
Fitting screw
(M2 x 3)
Tight ly fitting the phototransistor P.W .B processed
item to the hole a of the side plate L ass 'y as is shown
in
"Photo TR Fitting Drawing"· so that there is no
clearance, f
ix it with two rnachine screws. (M2 x 3)
Fitt ing screw
(M2 x
3)
Phototransistor P:W.B
pro cessed item
Ho le a
~F it photo TR against
the edge (no clearance)
Photo
TR Fi tt ing Draw in g
(hole a
see.)
3. Fitting the Pineh Block Stopper
The tape block stopper se rv es to retain normal running
condition
of tape.
When fitting is not appropriate, tape is led to abnorma!
running (tape rolling
or up/down movement)
Adjusting Method
Contirmi
ng the shaft center of j ig at the V groovecenter
of the pi nc h roller block stopper, fix it with rnachine
screws. (M2 x 3)
Pinch roller
block stopper
Pinch roller F.tt•
t
Per
1 mg screw
sop (M2 x 3)
Ch"''' proce.,,d ltom v
~
4. Fi tt ingthe Hole Element for Tension Detection
The hole element for tension detection
serves to cor-
rectly car
ry out back tension control. When f i tting is
not appropriate, tape runni ng gets unstable.
AdjustingMethod
Fix
the hole element P.W.B with rnachine screws (M2 x
3: PRECISION SCREW 738-2030·17), by applying the
hole element side against the chassis hole side as is
shown in the hole element P. W. B. fitting drawing.
Hole element P.W.B
v-,._--...::,._
processed item
fitting screw
(M2 x
3: PRECISION SCREW)
-
13-
l DAC20 10 l

vintagecaraudio.se
Fix with screw, while
applying
the element side
against chassis
hole edge.
Hole
Element P.W.B Fitting Drawing
5. Earth Fitting
Adjusting Met!'lod
In order to prevent earth no ise, the earth fitting location
of the earth processed i tem fix the earth by shifting
the earth center toward the cassette insertion gate from
the drum center .
Earth
center
D rum
center
6. Adjustment of Thrust Screw
Adjusting Method
In order not to apply abnorma! l oad to the motor
bearing, provide clearance of about O. 1 mm between
the thrust screw and the DC motor tip.
Fo ll owing adjustment , apply adhesive (CL Loc ktight
FIG).
screw
C-M -p l ate ass'y
processed item
Motor gear
Approx. 0.1
Cassette t oading motor
Thrust Screw Sec.
Earth Fi tting Location Drawing
Earth protessed i tem
7. Adjusting Method of Mechanism Control P.W .B.
fitting screw (M2 x 3)
l DAC2010 l -
14 -
G) Adjustment of tension torque :
Tape used: Torque Pack (CTR- 911-100)
Adjusting Method
i) lnsert Torque Pack to make PLAY state.
ii) Adjusting VR3 inside the mechanism control
P.W.B., se t 6-8g- cm back tension torque of the
supply side reel motor.
® Adjustment of start/end sensor:
Tape used:Empty Pack (CTR- 921·100)
Adjusting Method
i) D rop the pin 19 of IC1 , HD637B01 YOP J into
GND.
ii) l
nsert the Co l or Pack to make PLAY state.
iii) Connect ing ST ART BPF of TIP 1 to an oscillo-
scope, adju
st YR1 accord ing t6 the waveform
bel ow.
iv) Connecting END BPF of TP2 to an oscilloscope
adju
st VR2 in the same manner .
O.lm see
--
>
1/ '
C1>
o
.J. t\
il E
\
~
o
ll l >
(")
~
0.2 m see.
or less

vintagecaraudio.se
8. Adj ustme nt Co ncern i ng Drum E xch ange
Followingi drum exc h an ge, it is necessary to adjust tape
pass (incl. confir
matian of DPG phase and confirma t ian
of ATF pilot level) and to confirm error rate.
G) Adjustment of tape pass (to retain normal tape
run ning):
Tape used : Ach CTR-101-2 00
Bch CTR-101-300
Adjusting Method
1. Connect an oscilloscope to TP601 (6 dB OUT) and
T P302 (SWP).
2. T
urn on the POWER switch and mount the torque
ad j ustment cassette (TW-7 1 31) to make PLAY
mode.
Co nfirm tliat back tension is 7g-cm±1g-cm and take-
up to rque is 11 -1 6g-cm.
3. Next,
turning off the POWER switc h in state of 2,
Joosen
the drum gate/exit gui de rollers fitting s cr ew
until it is hal fway opened.
4. Turning
on the switch once more, take out the
torque cassette and mount the pass adj us ti ng tape
to make PLAY mode .
Drum
gate gui de roller
Drum exit guide roller
5. Push
down the drum exit side guide roller until
waveform of
the sub-code area of the envelope dis·
appears.
,. .,
l l
l l
l l
: l
l
l
: l
~J
6. Tu rning the guide roller fr om the above st ate to
loosen, ad jus t so that wavef or m of exit si de sub·
code becomes as fo ll ows .
7. Pushing
the gate side guide roll er as in 5, gra dua lly
laosen it
to ad j ust as fo ll ows .
8. Finely a djust the right/le ft guide rollers to obtain
waveform which is as rectangular as possible.
9. From that state, sl ightly leosen the right/left guide
rollers. (Confirm
that waveform make no change.)
10. As in 3, tighten the fi tting screws.
2 DPG phase
co n firmat i an . . Refer to Electrical Ad j ust·
ment on page 32.
3 ATF pilot level conf i rmat i an . . Refer to Electrical
Adju
stment on page 32 .
4 Error
rate co nf i rmatia n
Tape used: MUS
IC tape
Adjusting Method
i) Connect an oscilloscope to TP601 (6 dB OUT) and
T P3 02 (SWP).
ii) Connect the error rate co u nte r to ECC P. W.B
CN1 03 (13P) connect or.
i
ii ) C onfirm the wavef or m shown below .
S W P ~~------A _ c _ h ______ _j
B ch L
iV) Adjust, with the head amplifier P.W.B LPF VR
VR71 (Ach) a nd VR72 (Bch) so t ha t a value
(error rate) which
getsas minimum as possible.
-1 5 - l
DAC2 010 l

vintagecaraudio.se
l
o-
l
[MECHANISM ASS'Y)
~
' . HEAD AMP. SEC . r
CHA(X) l1ieidl Equa -1
Drumass'y CHB(X) ~ lizer
[
2-Head rotary] IC71 ö CXA 104S)
transformer J DRUM SERVO
SEC. l
~ l l
Drum motor
SIGNAL PROCESSING SEC.
• Demodulation
circuit
•Timing
generator
• RAM control
Er
ror
correction
1/0 circuit
ICIOI (CXO I0 09) ICI02 (CXDI008)
Static RAM ICI03 104
(64Kx2l ·
~
U.V.WIIC305 (CXOI052)
Pinchrolla ·~ CAPSTAN SERVO SEC. E' l
~
r==-1 Capstan Q ,
EJ contr ol ~
C apsta n motor l ( X20036) IC604 ( CXAI 046M)
IC601 C
®®
Supply reel Take-u p reel
t t
Cassette loading motor
(fl.\1 l
SENSOR SEC.
1. Tape (start/endl
2. Cassette position
3. Tape position
4. Dew sensor
5. ID switch
6. Hea ter
7. Temperature sensor
8. Tensio n
REEL SERVOSEC.
IDiver l ~
IC50~ . 505
T.APE/CASSETTE IC2
LOADING SEC .
l fape loading driver l
jc~k,~ding driver
H l Sensor circuit l
'--
L_
MECHANISM
CONTROL SEC.
IC I
System microcomputer l
in terface
l Drum control l
l Capstan contro l l
l Tape loading ~
contro l
l Cassette loading .. 1
control __
l Maehanism operation l
control
l Reel motor control l
l"'
~
(LC7800l P
IC401 0
D/A converter F
PACK IN
AF MUTE
REMIN
REM OUT
Emphasis
volume
1-----'
7
EMPHA
~
Output
o
o
o
CN401 (2)-CN201 (1)
System
Sub code interface
processing
DAT mode!
contro l J
Mechanism
microcomputer
interface
1
SYST EM CONTROL SEC.
Display/operation
switch control
DISPLAY/OPERAT ION SWITCH SEC.
POWER SOURCE SEC.
+13 .2V
+1v
~
+6V
~
GNO
..:-----
Powersource
~ I LL
~BAT
~ACC
GNO
m
r
o
o
"
c
.,..
)>
C)
::a
)>
s:

vintagecaraudio.se
O OUTLINEOF CIRCUITS
G) Power Source
Receiving power source from a vehicle side, generate
power supply voltage needed for the set {+13 .2 V, +8V
and +6V) and supply it to the set.
@ Description of H ead Amp. Block Circuit
The head amp. BLOCK (hereinafter referred to as BLK)
uses IC71 {CXA1
045Q) and adopts on ly PB mode.
The signal which supply for the head upon reproduction,
the head amp. BLK only having very weak signal of
several ten s of 1O ,uV p-p which, on the other hand,
deals with a wind band of frequency of 100 kHz-10 MHz,
enough attention should be paid to noise, etc ..
Also,
th is BLK, being a digital /analog mixture block,
has been designed with particular considerations con -
cerning stabilization
of noise preventive circuit.
The PB mode of the head amp. BLI<; consists of the H.
AMP. {head AMP.),
2nd RF AMP., PB LPF, SoN AMP.,
PCM equalizer, and PB limiter.
®Operation of DAC Block
1. Audio
Clock and data received from signal treatment (ECC)
are converted into analog signals by the D/A converter
JC401 (LC7880M).
The signals pass through OP-AMP.
IC402 {NJM4560)
of the buffer and, at the 7th passive
low pass filer LPF401 and 402, eliminate useless high-
pass
element generated by sampling. Signals out of the
Jow-pass filter, after pssing through de ·emphasis circuit
IC403 (TA7415P), bass/tremolo circuit
and VOL,
are output from the output buffer IC404 {NJM4560).
Circuits provided in rel
ation with the audio circuit
include
the 5V type power circuit, the 12V type power
fi l ter circuit, de-emphasis changeover· circuit, the audio
mute circuit, the externa) sound changeover circuit,
etc ..
2. System Microcomputer Power Source
The power circuit of the system microcomp ut er is in·
cluded in DAC BLOCK.
3. Illumination Power Circuit
This circuit controls the operation knob and the vol
ring illumination, which
is lit when DAT is in play,
when the vehicle illumination is on, or when the head
unit is in operation.
@) ECC Section
This block mainly consists of the IC101 (RAM
contro l),
the IC 102 (ECC, error correction) and the IC103 & 104
{RAM) LSls. As its major operation, RF signals output
from the head amp . see. are inp ut in the IC1 01 46 rin.
In IC1 0 1, splitting of PCM data and sub-code data as
we il as modu l ation of PCM data {10-8 bit converti on)
are carried out, which are, then, output to RAM . Sub·
sequently, data are transferred from RAM to IC102
for error correction which are output from the IC1 02
Pin 20 as DADT signals.
®System Control Section
This block consists
of the system microcomputer
(IC201) and its peripheral equipment. The system
microcomputer JC201 controls the overall operation
of this machine, which is connected mainly to the
mechanism control microcomputer (IC1), the ECC.block
and the DAC block, and receives instructions and
signals from the microcomputer and other LSis con-
cerning their
states to send corresponding instructions.
IC1 (mechanism control) conducts exchange of oper·
ational instructions in 6 bit parailet data. lt also is
connected to the operation sec./LCo' display see.,
which receives
key i nput signals and send out instruc·
tio ns to each block and serial data signals for LCD
display.
In addition to the above, IC202 serves as a reset circuit
upon reduction of power supply voltage or up on voltage
reeovery.
IC 204 and 203 make up the EJECT ac-
ceptanee cireuits upon ACC OFF.
@sw. DISP
This drives,
by IC701, the operation swit ch (key matrix
strueture) and operation see. dust·proof door illumi·
nation LCD display.
Q) REEL Block
The reel block {hereinafter referred to as BLK) controls
the reel motor for R-DAT {020-2003-00) according to
the instructions of the meehanism contro l { IC1 ). lt also
drives
the brake plunger mounted on the reel motor.
The major operation concerning each IC is explaines·
as follows.
(1) IC501,
502: FG signal waveform sh api ng and FIV
conversion see..
FG signals from the reel motor see. are in,put in pin 3 of
eac h of IC501 {take·up reel side) an d IC502 {supply
reel side) whose waveforms are shaped
at the operation
amp lifier and the comparator inside the IC. Following
waveform shaping,
they are subjeeted to F/V conversion
at the saw tooth generator circuit and the sample hold
cireuit inside
the IC to be output from the pin 15 of
both IC501 and 502. This output is used f~r tape
speed controlat high-speed searching.
{2) IC 503: Composite Amplifier Sec: .
The F/V conversion output from IC501 and 502 are
input in IC503 pin 2. Search operation of almost eon-
stant tape speed is available here since a sum of rotation
speed of both reels of the take-up supply is maintained
constant.
Tape speed
is set by bias voltage impressed in IC503
(pin3 ).
This rnachine sets max. approx. 180 times of speed for
C-120 tape and max. approx . 140 times of speed for
C-46 tape .
{3) IC50 4/505: Multiplexer see.
IC504
and 505 serve as Bch multiplexers to change input
to drive am ps. (IC506) of the take-up and ofthe supp ly
sides respcctively. Switching
is controlied by three
mode signals {MODE A, B, C) from the mechanism
contro l (IC1 ).
-17 -l
DAC2010 l

vintagecaraudio.se
(4) IC506: Drive Amplifier Sec.
Two amplifiers inside IC506 serve to drive reel motors
of the take-up and the supply side.
(5) .0507/508: Attraction • Retention DriveSec.
SOL-P/H signals
from the mechanism control (IC1) tums
on 05.07/508 and supplies current to the brake plunger
invalved
the reel motor. Al so to prevent burning of the
plunger, attraction is controled by the mechanism
control
to max. 50 ms.
0507 : ON~ Brake release
0508 : ON~ Retention afterattraction
8 ORUIM
Drum servo
is divided into the normal servo at normal
reproductian and
the search servo at AMS. In the
normal servo, three servos including speed, phase and
bias
function so that the drum rotation is set to 2000
r.p.m.. In the search servo, two servos including speed
and bias function sothat relative speed of a tape and the
head is set to 3.133 m/s.
Operation
of each seetian is described as follows.
(1) PG . Amp . Sec . (IC302/303)
Rotation
phase detection output (PG signal) from the
drum motor is amplified and output via the comparator
as pulse (LPG) (IC303 PIN7). At this time, LPG cycle
becomes
30mson normal reproductian (2,000 r.p.m.)
(2)
FG Am p. Sec. (IC302/303)
Rotation frequency (FG signal)
from the drum motor is
amplified and
output via the comparator as pulse (DFG}
(IC303 PIN 1).
At this time, DFG frequency becomes
800Hz on normal reproductian (2000 r.p.m.).
(3) Servo Control Sec. (IC305)
IC305, being
the servo control IC for R· DAT, has the
following functions. (As for details, refer to Ex-
planati
on of IC's.)
-_1.
[)rum servo output
2. Capstan phase comparator output
3. Switching pulse output
4. RF WINDOW output
(4) Motor Drive Sec. (IC301)
Servo signals
from the servo control seetian (IC305}
(speed servo/phase servo/bias servo) are input via the
filter OC306/307) as drum error signals (DRUM ERR
IC306 PIN7 ). Further, from
the drum motor, 3-phase
hale element
output (HV/HW/HU) are input. Inside
the IC,
motor driving output is controlied and 3-phase
drum motor driving output (U: :PIN 16, V: PIN 14,
W: PIN 17) is supplied to the motor.
@MECH
Th is is a block which controls mechanism operation with
CPU as its center.
The mechanism operation microcomputer rc1 (051·
1059-01) plays the central ro le which de teets.instruc-
tions
from the system microcomputer and current
states
of the dew/temperature sensors, the cassette
and tape,
the ter.~sion servo positional switch and hole
elements
of each motor in order to give appropriate
instructions
to the system microcomputer.
o Motor DrivingSecti on
Two motors, one for tape loading and the other for
cassette loading, are controlied by thr · ee units of contro l
signa ls from IC1 mechanism control and driven by IC2
(TA7288P).
o Mechanism Control Microcomputer
IC1 (051-1059-01) uses a microcomputer of 8 bit and 1
chip. As
for details, refer to Explanation of ICs.
o Tension Servo
The tension servo
serves so that a tape and the drum
maintain a
touch of a eonstant tension from tape start
to end and to assure correct tape running against ex-
terna! disturbance.
o Tape Start/End Detecting Section
A tape when
it comesto the start position or to the end
position is detected and
the information is sent to the
mechanism control.
Q7 08
ON ON
ON
OFF
OFF
ON
OFF OFF
State
tape unloading
tape
at start position
tape at end position
tape at PLAY position
D EXPLANATION OF DEW/TEMPERATURE SENSOR
CIRCUITS
The dew
sensor and temperature sensor circuits have
been made into H IC and are IC4 (051-1057-70). Both
circuits adopt comparators. The
following is the outline
of each circuit .
1) Dew Sensor Circuit
The dew sensor circuit detects
humidity inside the
device and prevents winding of tape around the drum
which tends
to occurunder high humidity.
Dew sensor elements are u sed for humidity detection.
Th e se elements increas e resistance value as humidity
gets high and reduce the value as humidity gets lower.
These changes in resistance value are converted into
changes in voltage, which are then campared with
reference voltage by the comparator and are made
inta circuit output.
Humidity
Dew sensor circuit output
(IC4 Pin 5)
High High (5V)
Lo w
Low (OV)
Output of this circuit is sent to IC1 (mechanism
control microcomputer).
With high humidity, IC1
makes the state under which no all key operation of
the set is accepted. In ca se a tape is mounted under
such stat
e, procedure as such EJECT is to be carried
out.
l DAC2010 l -
18-

vintagecaraudio.se
III START/END SENSOR
The start/end sensor circuits mainly consist
of two
sections, the oscillator and BPF . These circuits serve
to prevent occurrence of malfunctionwhen light is taken
in
from outside. The oscillator generates square wave
of approx. 2kHz which lights up LED. Thus, if any
light should be taken in, by passing BPF in between,
only the opticål output from LED can be received.
BPF
output (Refer to the table) is linked to the mech·
anism co
ntro l through the comparator.
Camparator
Output
Tape State
H ST ART or END position
L Not at START or END position
10 CAPSTAN BLOCK
The capstan block consists
of the speed servo section
and
the ATF servo section.
1)
Speed Servo Sec.
This makes the motor rotation (tape speed) constant.
FG signals (";50mVp·p) generated
from the capstan
motor are changed into pulse wave in FG Amp . (IC603
CX20115). The FG signals are either
output to the
drum block as CFG and 16 divided with the inside of
IC (CX1052) or output as it is or select as they are ,
which are then returned as CFGO signals. CFGO sig n als
are divided by the programmable counter (IC602
TC74HC161 F).
After being output from the counter,
it is input in the F-V converter (IC602 BA 6302AF)
and,
thr ough the interna! inverter, is output to the
counter and also
to the F-V convertion section. This
FG can be monitored
by T. P604 and CFG. This
frequency, in general,
is 559Hz. The F-V convertion
section
output voltage is output to the motor driver
(IC601 CX20036)
as speed er ror voltage.
2) A
TF Servo Sec.
This servo serves to drive the head at the center of the
track .
Reproductian signals (R F signals)
output from the head
am p. block are supplied into ATF IC (IC608 CX1 046M)
through
the amplif ier of 6dB Consisted of transistors.
This
IC outputs ATF error, SYNC, and RF DET. SYNC
is output in the ECC block, RF DET in the drum block,
and
the capstan blockuses the ATF error signa ls.
The
ATF error signa ls are made from the ATF . PILOT
signals
of 130kHz which are recorded on a tape track.
The signals
output from the IC pass through the filter
and the rev erse rotation amp. and are output in the
motor driver at the analog SW (IC604 TC4066F).
"Draw circuit" 0604 {2SK536) changes the filter on
drawing, in about one seeond following ATF ON,
from t~e state with quick drawi ng but l ess stability
to the state with slower drawing but better stabil ity .
The above
speed error singls and the ATF error signa ls
are made into
PWM signa ls at the mixing amplifi er of
the driver \C (IC601) to determine the driv i ng voltage
of the motor.
EXPLANATION OF ~C ' s:
Ja BA6302AF 051-1073-00
IC
for FG System Speed Control
Outward Form
Outline
FG system
speed servo contro l IC which consists of four
blocks; the FG amp. see. with hysteresis, the S& H system
F/V convertion see ., the Qrror amp. see. and the inverter
see ..
The
motor cont r ol speed is set at the externally provided
CR,
wh ich has high- speed start circuit to obtain stable
starting characteristics.
Si
nce the progr am counter being provided between the
FG amp. output and the F/V convertion input, various
levels
of mot or s peed can be controlied with high pre-
cision
by a program.
Block diagram
t r~~- -- -- -
14
Ve~:
l
13 12
11 lO
: + l ;-~;,~;;e;---~
1 1 1 1 see. 1
1 Control output 1 l : 1 l
1
am p. see. 1 1 f.v convenion see. 1 l 1
1---------...1 L- -- --- - -- - ---_J l
;- -- ------FG - Ämp ------ - - -~ ·: 1
1 . L 1
: ~ ysteresisamp. : ------ ----.J
,~ L--j::j~J=--·~--- __ !
l 2 3 • s 5
fl! CX20036 051 -1103-00 Capstan Motor Drive
Outward Form
Outfine
This IC,
be ing a bipolar !C fordrivinga brushless motor
of 3-phase bidirectional current·carrying system, consists of
the following functions.
Hole element amp., current-carrying angle changeover
circuit,
motor driver, hole element power source input
amp., contra\ amp.,
PWM centroi circuit, curr ent limit ing
circuit, voltage limiting circuit, power
save circuit, rotation
direction changeover circuit.
- 19 -J
DAC2010 l

vintagecaraudio.se
lnwta mp. Conuolamp.
Description of Terminals
To r·
mina t Term inal Name
Function
No.
1 HE a,+
2 HE ~ -
3
HE b+
Input t erminals of hole elemen t amp. which forms th ree- phase
diHercntial input.
4 HE b-
5
HEc:+
6 HE c:·
7
HC Hysteresis canc el termin~!. wh ich c.anc:els with V cc connec tion.
Generally, kept open.
8 vco Power source terminal.
9 HE POWER Powcr -sourcc fo r holt tiements which is turned off with
power save state ( 26 ~GNOl. Provi ded with c:urrent lim ilet .
10 OUTPUT A
11
OUTPUT 8 Motor ccnnection terminat
12
OUT ' PUT C
13 ICO.M Monitor terminal of motor current. This voltagc is used for power
Tr to set base current or fo r current limiter.
14 18 SET Base current setting terminal of pOwer Tr .
15 vs Motor input voftage terminal . Voltage after PWM output is
passed through LPF is app li&d .
16
PWMCONT Ou1P\Jt terminal of PWM contro l signats. Ext erna liv fi ts centrolling
power Tr •.
17 os c Condenser connecting termina l for setting oscillation frequency of
PWM oscillator .
18 SYN<: SigM I 1/0 te rminal to svnchtoni:t:e PWM os-cillation ftcquency with
e xt ernat s ignalsot with e xterna! os.cillation frtQucncy.
19 CONT OUT
110 ter minal for loop .gain settin g amp . of PWM l oop, which sets
20 CONT IN
IOOp gain with externaity provided resistance.
21 GNO GNO terminal.
--
-
22 VOUT
23
V IN+
Buffot for servo signal which SGI$ servo gain with externaliv pro·
vidcd res is tance .
24 VIW
25 CL
M.$x . curren1 scuing terminal ot motor. Voltage is applied from
outsid e.
26 REMORT Connected to Vcc for proper operation of ci reuit.
Standby state is made when connected to GNO, thus attaining power
saving.
27 DIR Rotation direction con tro! t erminal for motor.
When connected to GNO, motor rotates revenely. In general. kept
open.
28 SRA.KE Brakc term inal. Current is soppl ied onlv to a phase with motor.
With H level i nput. being set to operatc and to have o flow of
approx . 50 ~A.
l DAC2010 l
l'ål CX20115 051-1075-00 Motor Sense amp.
Outward Form
Outline
This IC, being the bipolar IC developed for phase detec-
tion of 8m m video using variable reluctance system, has the
capstan and d rum type FG. PG sense amplifier.
e5V single power sou rce operation (5_0 ±0_5V)
tl Capstan FG amp., drum FG amp and PG amp. can öe
constituted only with this IC.
oAM fluctuation circuit is built in the drum FG amp.
Capstan
FG
0 Capstan FG . Built-in double increased output .
(Enabling improvement
of se rvo system)
o H igh ly sensitive capstan FG am p. is buit in.
o Applicable to u se of magnetic resistance element as ,
capstan FG.
Block diagram
CAP AMP OUT
CAP A.M. P Ni CAP LIM IN CAP FG OUT1
CAP rG INl <!5)-'VVV'L...('-.._
CAP fG IN2,.,.---,./
Description of Terminals
Ter·
mina l Terminal Name
No.
1 ORVM COM
2
ORVM FG IN
3 ORVM FG OVT
4 DRUM PG IN
5 NC
6 PEAK HOLD
7 OAVM PGOUT
8
GNO
9 CAP FG OVT2
10 CAP FG 0VT1
11 CAP LIM IN
12
CAPAMPOUT
13 V cc
14 CAPAMPNF
15 CAP FG INI
16 CAP FG IN2
-20-
1/0
-
l
o
l
-
-
o
-
o
o
l
l
-
-)
l
L------------{3~ f~U~tT
>- ----- -----(ry7 ~~u~,
PEA K HOI.O
Function
Aefcreoce voltage
Orum FG in;>ut
Orum FG output
Orum PG inJ)ut
Unuse-d
Orum PG condensPor termin ~ !
Orum P,C output
Eanhing term ina l
Capstan FG double increa st<:l output
Capstan FG referonce output
Capstan limi ter input
capstan pre·amp. output
Power supply term inal
Capstan pre-amp . NF
Capstan FG r everse rotation i nput
<;apstan FG non·reverse rotation input