Marantz SUPERSCOPE CD-320 Mounting instructions

MoDErcD€2O
DEC.t1978
SUPEBSC0PE :J!i,'flii,%iF,IÏ,1;,,0,,*0,,n
B./rrlârr.â.rrtz - CAI-lt0BNlA9l3llU.S.A

SUPEASCOPE
DESIGN
ANDSERVICE
and selected
high grade componenc,SUPERSCOPE
hascteated
$e uhimate in stereosÔund OnlY
pârtscan insurethai you. SUPEFSCOPE
prodùctwill continue
10performto the sp€cificârioôs
for
cD-320
wirh
thecurent
.etâil
privequotation
onavailable
pans
inorder
lo advise
themol thecost
pâdsfor yoirr SUPEBCOPE
stereoaregenerally
available
within 72 hoursthroughoulthe nâtionviaa toll'ifee lin€ro our
Narionat
pa.rsOepot in Catitorniâ.
The sates
profèssionâlswho takeyou.call immediately
relerto their own desktop com-
puter terminaland cânquickty deremine the availability
andpriceinformâtionyou require.It for some
rcason,
vour order
shoutd
exceed
our âvaitabtestock, we uruattycaninitânrly provide
an alternale
replacemênt
pa.t or current
deliveryinfor_
mâtion. when thè oldel i' p|aced
and conlirmed. the computer simuhaneous|y
génerâtes
,,hard copy,, ordersat the
disùibution center.
As hard copiescomedirectty trom the computerto the nâtionalparrt dePot.
vour requenedrlock as
assembled
and
prcpâred
for shipmentand
placed
onthe fitst avâilâbleca(ie' ior deliverv
lo vou'
Usins
superaor
desqn
orisinalSUPERSCOPE
Dîecl conlumers
will be Provided
ol rhe
pârts
and
shipping.
OVERSEAS
PARTSORDERING
CANADA
Superscope
Canada,
Lld
3710
NâshuaDrive
Ontario,
Canada
L4VlM5
OROEAING
PABTS
phone
orde;swi
etiminate
maatdetays,andwe encourâgethe useof thir method.ll you orderby mâil,ÙæSUPEFSCOPE
parts
order
formswhichare
âvailable
lrom our NationalPa(s Oepot
locatedat thelollowingacldress:
SUPEFSCOPE
NATIONAL
PARTSDEPARTMENT
20525Nordholl Street
Chatswo(h,
California
9'131
I
Phone: 1800'4235108
l213'9989333
Thelotloûing
inlotmatron
mustbe5uppl'ed
toelmrnâte
delavsin
process'ng
vout
ordet:
1. Complete
addrcss.
2. Complete
pan numbeÉ.
3. Complete
desùiption
ofPa(s
4. lvlodel
number
forwhich
pan
isrequired
{indicate
SUPERSCOPE}.
5. Accounl
number
{lor
âccountcuslomert
onlvl
Pa.tsmayalso
beordered
lrom thefollowingov€6eâs
addresses:
Supe6cope
Europe.
S.A. lvlâran12
Fraoce
Avenue
Leopold
lll,2 BueLouis
Armand
I
7120Peronnes
Lez-Binche 92600Asnie,es
Eelgium HauGdeSeine
France
EUROPE
MarântzAudio
U.K.Ltd.
London
Foâd,203
Slaines
Enqland
AUSTRALIA
SupeGcope
(Austrâlasia)
PlY
, Ltd.
32CrossSrreet
(P.O.
8ox 604)
Brookvale
2l0O
N.S.W.
JAPAN
3622Kamitsuruma
Sâqâmihâra
Shi
lvlâx'Planck-Sùâsse
22
O-6072
o,eieich
I
aI oJthe abovelocarions
aretully equrpped
ro lake care
ol your totalsefvice
needsEecause
vafioÙs
countriet
havediffefinq
conliqurationrequirements.itisnecessa.YthatYoUcontacrthe'ervicefa€iIitYinyou.particularcounlry.Intheeventthat
rhere
isno,ervice
tocation
listed
tor your country,please
contacr
thenèarestfacilityfor thenecesrâryâs56tance
EAPEBSCOPE,
BYlrrâ'r.àlrlzo

cD-320 cD-320
TABLEOFCOI{TEI{TS
l.
2.
6.
1.
L
10.
11.
Features
. . .
Se.viceNote..-......
Têrt
Ëquipm€ntRequired
lorseryicingReplacement ...-. ... . ' 1
EottomCâreCovêr
ândChassis
Disâssembling
Procedures. .
Adiustment.nd l\leasuremenr
(Audio) lnstructions 2
17
r8
20
22
24
35
Block
Diagram
LêvêlDaâgrâm
SchemâticDiagram
......
Circuit
BoardDiagrâm
ExplodedViewandPartrList
ElectricalP.rts
List
sPECtFtCATl0t{S
GEI{ERAL
Dim6n5ion3{WxHxD)
weighr......3.6kq
3.2kg
PowerRequirem€nts
PlugType...........
Output Level RCAPin
800
mv
.. 1.5kO
. . 29.3)(8.2
x 19.5cm
(l l% x 3%
x 7%inchesl
15oz)
with bâtte.ies
l0 ozlwithout
baneraet
FourUM'1,"D" sirè
flashlightbâtt€faet
(Rechars€abl€packr
ModelRBD.I)
ForEùrope.... 2201110V,
50H2,l3W
lmped€nce........... l0
kf}
Line
{Au,()
. ...... .. 2
{one
loreâchchannsl)
lmpedance........... l.5kQ
OIN
{Rec./Play}
. . . . . . . . . . . . . . . 1
PlugType
.............. DIN
InputSensitivity
....... 20mV
Input
lmpedâncs....... 30kO
Output
Level 800
mVat
11.9
VU
l7
(6
Numberof Ssmiconductors
Trânsistor... ......... . 20
Diode.... ..........
.. 24
tc....... ......
.......5
lnput:Microphone ....---.2
{one
for eâchchannel)
PlugType..
,........ ..
.. %"
Forl..,SA& Canâda 120
v,
60
Hz,13w
72dav
EXT.
Spۉker................. 2
(one
foreachchannel)
PlugType.............. Nlini
1200
mWt 2
PlugTvp€..
-........ RCAPin
-30
dBV
50
ko
lmp€d.nce. ErasinqSyst€m Hâlftrack,
ACErase
TAPERECOROII{G
SECTION
Tape...... PHILIPS
TYpeCompâctCassene
Tap€
Ouanerùack
stereo,ACEias
Fewind& Fasl
Forwardlime I l0 sec/C.60
OneDCservo
Line..... ........2
(one
loreachchânn€l)
Outpul: Number&Typeolllotor
.........

cD-320
I. FEATUEES
1.1 Fully Selèctâble
Automrtic RêcordLeYeland
P..k
Limitêr
According to program source, thrèe relections are
posrible ABL. LIMITERand
MANUAL.
1.2 Ons.Toùch
Rocordine
Thetâperecorde.
canbeset10the recording
mode
jusl
by prersing rhe RECbutton. Theroir no need
to pres.
1.3 AuromaticTor.l M.ch.ni3mShutOft
Whenthe tâpe comes10 the end in any of the play-
bâck,record,fart fowardandrewindmodes ot opera.
rion, the Îâpetensionconlrolledauto.rlopperactuales
to âulomaticâlly releasethe locked pushbutton. ll
takes2 to 6 secondsto rel€ase lh€ pushbutton afi€r
the tape is woùnd up:.ote that the inte.valbecomes
longerwith decrealeol thepower linevoltage.Locked
PAUSE pushbunon prevents operâlion ol the âuÎo'
!.4 Du.l Flywh..l Mcchâniim
Applying two flywheelsturning round opposirelyto
èach
othe.. thesùengthcâusêdby wobbleor oihe6 k
caôceledeachother. ând stable performance ol tly-
wheel
rotationir alwaysa$ured.
1.5 CueandR.ri€w Pulhbunoni
By depressingth€CUE
or REVIEW
pushbutton,
the
tape can be fast loruârd or rewind while monitoring
recordedsound.this feâture is very convenienifor
easyrelerenceand indexing o. repeared
plâyback.
8y
dep.estingth€CUÊor REVIÊW
pushbutton
withthë
PLAY pushbunon leavingdepressed,the pinch roller
s separated
from the câprtan,allowing
the tapeto be
1.6 Fourwây PowerSupply
The Nlodel CD320 can be operatedby four power
sources:drycells
{Ul 1x4), AC
power
line,external
DC powe, supply
(DCA-6,
soldsepa.ately)ând re-
cha.seâblebâttery
back
{BBD.1,
soldseparaielv}.To
prevent
thepossibility
of b€ingoverloâdedby twoor
more power sources, the contacts of rhe AC jack
(J001)
and externalOC jack (J0021
aulomaticallv
select only one power supply in the following pri-
oriry:1.ACpowe.
line;2.
externâl
DC
powersupply;
3. dry baneries
lrechargeable
battery
pack).
Thanks
10irs builr.i. rechârgecircuit.evenwhennotoperated,
the Model CD'320 can recharge
lhe r€charseable
battery pâck aslong as ir is coôôectedto AC power
lineorerternâlDC
power
supply.
2.SERVICE
ItloTE
As can beseen
trom thecircuitdiagram,thechassÈol
lVodelCD.320
consis$of followinsuni$. Each
unil
mounæd on a printêd circuit board is dêscrib€d wilh
the square enclosed by bold dotted line on the circuit
Pr..Aûp, Pomr Suptly.Swilch,
Inpurs.t cr,Dolby . , . , . muri.d ônP.w.Bqtd PIOO
T.rmin.r. .,.... . Éùnt.d on
Pw.aotd Psoo
Pù.r S.hr lN V.6ion) . . . m(trd on?lry.so.td PaOO
Mic.Arr....... . .. mùn..don
P.w.Bo.rd
?700
H..dphom...,..,.... moù.r..|on
P.$r.Bo.dPAdt
a.chùr..bl.,......,,. munr..lo.
P.W.B*d Paor
Fù- IUC
v..rionl,..,.. m(nnd d P.W.aryd Pgdt
3.TESI
EOUIPMEI{TREOUIRED
FOBSE8VICIIIG
BEPLACEMEI{T
For measuringcheckingthe lvlodel
CD.320,
thefollow_
inginrtrumentsand
mat€rialr
are
necessâry,
.Audio Oscillator
{af
OSC)
.Artenuator (600
o)
.Wow ândFlutt€rMete.
.Torque Meter
(Cassette
Type)
.Digital F.equencyCountèr
.Blânk Tap€(Completely
eraeed
wirh bulkeraser)
TDK AC'2ll {Normâll
TOK AC-511 (CrOr)
SONY
CS.30 (Fe.C')
NOTE: lf any doubt k noted in a measured
varue,useg
newlôPe,
.Test Îâp€s {New
Tape}
IVTT.l1l WôwandFlutter,
TapeSpeed
MTT.112 Measurem€ntol Output Level,
Signal.lo_Noise
Râtio
lVTT.l50 Adiusthênt ol Output Level
' l\4IT.1l6U FrequencY
Besponse
(forNormal)
Frequency Bespons€
(for CrO,,
Fe.Crl
tvTT,1l6K
-
MTT.l21 Cross
Talk
MTT141 Channel
S€Paration
MTT-I
l5C PlaybackEO,Azimuth
S|AS andEOswirchestettingi,râccordance
with lâpe
aiâ3 EO
120!s
CrOl High 70/$
Fe-Cr 7olrs
J

cD-320
It
It
4.80TT0t
CASÊ
C0VERAf,o
CHASSTS
DISASSETTIBI-I]{G
PBOCEOURES
4.1 Râmorins
Ca$!rt.Covrr
Pull
th€covêr
purhing
A and
I inthedirection
of an
arrow.
Thên
thecover
wi
bèremoved.
4-2 Rsmoying
Rêâr
Cov.t
Remove
six screws1 ro 6 at therear.
Femov€
screwi7
and 8 â1rhe bortorÎl.Pu
the rear
coverIn the d[ec-
taon
of an
arow, ândit wi
beremoved.
e-@l5,ar o
4,1 Rêmovin!FronrC.$
Remove
th€ diats A ând I and removefour Knoos.
Remôvefour rcrewr 1 to 4 from the sides.
Remd6
the frônr casein the direction of ôn âr.ow. At rhat
time, it i! recommended
to tower
the conrrotbunon!
b€ror€the front caseÊ removêd
since
h i, ditfacutt
to remove it due to catchingof 't by the conûol
4-3 R.moving
TopC$o
Removê
three
rcrews 1
dir€ction of an arow,
thât rime, .emove the
to 3. Pull thê top casein the
ancl it will bê rêmoved.
At
connecrion wire {sotdered)
t

46 R.morin! Plvgo.rd
Romove
four sctowt t .nd thon removsnuti A tnd
B.Removê
tct.ws
2 to 4 fromthe
Plry
boad' Bomove
th. PllVbo.rd
inlho
dircction
of Ânarrow.
CD.S|TO
t!6 B.nodn! M.dr.nifin
R.move four 3cr6vr!
I to 4, and th€ medrânitmwill

5.ADJUSTMEI{TAI{OiIEASUREMET{T
(AUOIO)
IfSTRUCTT0IIS
:- Predulionr:Prior
roanyadjustmenlor meâsuremênt, carbonleir.chloride,
and
fullydemagnerizerheheôdi,
cleantheheadslit' with gauze
containingâlcoholor capsian
and
similâr
parts.
5.4 MECHANICAL ADJUSTMENTS
r-
54.1 Pl.y OperationChock
{t)Tinin!
Ch.cr
.Depress
button PLAY, andch€ck lo makesure that
the take.up reelrotatesla.st
andthen that the pinch
.olle. rotates.Samuitaneourrotation ol thesereel
androllerisnotacceptable.
NOTE: For this check.slowly depre$ th€ button
withour tape mounted regârdlessol lockingconda.
.Slowly depresrbutton PLAY, and the take-upreel
will startrotation.At thâttime,check
to makesure
rhal â clearancebelwe€nthepinchroller andcapslan
isless
ûan 0.5mm.
ï
{21Timinr
Adiustm.nt
lf ool of specification,
bendthe pârtof thepinchroller
b.acketwhich faces
thè headchassissropper. In rhe
figùre
rhownabove,bendthepâ( in thedirection
ot A
to decreate the clearance.To increâse the clearance,
bend
the
part
in
thedirectionof8.
NOTE: After adjùsûenÎ, check to be su.e that the
pinch roller bra€ketdoes
not contactthe heâd
chassis
rtopperinPLAYmode.
5A-3 Torqu3
Adiurtm€nt {FF, REWI
Set thê extended
parts {B in the figureshown
aoove,
of the torque adiustmêntleafspring
(A in ûe liqure)
ot the FFIREWidler
on âny one ot threesrepprng
NOTE: To increase
torque,setthee)(tended
pârtsto
thestepping
panof 'INCRÊASE"
andro decreâreit,
set
thoseto lheræpping
pân
of "DÊCFEASE'.
Adjustingranqe:
70
- 110
s.cm.
B
A-E
5A-4 Pinch
Rollor
Pr€3ling
Forco
As shownabove, meâsure
pressing
forceof the pinch
roller using a gauge. Fof measurement,
proceedôs
follows. Pull th€ pinch roller off the caprtan shalt
asshownwaththea.row,and
graduallv
release
n 1othe
€apsran.Jusrwhenthepinch.oller star6 rorating,
reâd
an indicat,onol â gàuge.
Pressrngtorcémustrangein
300 9 !50 9. lf our ot the range,
bendth€pinchroller
springin ùe direclion of B or C at secrion
A shown
NOTE: To increâse
pressing
force,bendthesaidspring
in ihe di.ectionol 8, andto decreare
theforc€, bend
iÎ
in
thedirectionofC.
5A-2 Paui€Timing
Depress
burton PLAY, slowly depressbutîon PAUSE,
andthe takeupreel
will pause. At that time.check
to ensure
that a cleârancebetweenthe pinch roller
and capstanrangesfrom 0.2 to 0.5 mm. lf out of
the ran(le,adiun a bending
angleof $e pinch roller
brâcketârm
(view
A).
NOTE: To increasea clêarance
betweenthe pinch
roller
.nd cap5tan.decreâserhedngle
{in
thed,'ecl,on
of C in the figure).
To decreâsethecleanrace,increase
theangle
{in
the
direct
onol B).
.A
Y?-
B
c
:

cD-3'lo
5A-5 Torqu. Adiunm.nr IPLAYI
Mouni the ext€ndsd partr a (two) ol the dùc leaf
springon any one ol the.têpping pans ol the idler-
Adjurting rang€:
40 to 70 g.cm.
NOTE:
{l) To increare
torquê,mount the extended
parts
on
"INCREAS€" ând ro decreasetorque, mount
themon "DECREASE".
12) Check the take.upclulch lor slipping.
when the
rê€l base is pâured, th€ wheel murt smoothly
roÈte. The wheel, when irragularly.otating or
siopping,
ir not acc€ptable.
r{cFÉas€ o€cRE^S€
---L
5A-7 ln3i.ll.tion ot Motor Pull.Y
Check 10 eniure th.t â clsarance
betw€enthe DC
motor and pulley is 3.1 mm. lf out ol specificôtion
reposhionth€pulleY
ôs
shown
J
-
5A-8 T!p! Spê.d Adiu3rnxni
Mounr3 kHz testùpe on the sêÎ,andchêckto make
surethat the meterpointêrôl a m€aluring
inst.ument
{f.equency
counter} indicates
3000 Hz 13%or lessas
sp€cified.lf tapespeed
exceedsthe high limit, rcplace
the pulley wirh a pull€y ol par$ No.4367262050 |f
thê speed
ii lowsr than the low limit, replace
it watha
pullev
ol pâ(s No.4367262040.
5A-6FlyvrhoelThruir
Adiu3im.nt
Adiusra clearance
betweenthecapstantail êndând
thru.t b€aringtoarângefrom0.1to0.3mm
æ
shown.
Adiustths thrun screwin theflvwhe€lbr.cket
using
a Philipstc.ewdriver.
Sincethe clearancê
cannotbe
dkectly
mearured,captureadirt.nce
in
an
âxialstepof
the
flywheelwilh thss€nsibilitY.
Afterâdjustment
hat
completed,secur€thethru.tscrewwilhth€
sc.èwlock.
.^ \
L_-ffi
ll
a

---oI
5.8 €IECIR|CAL
A&rUSTrrEr{Î
U
rt
581 A2imuah
Adiunm.nt
Play backthe 10 kHz or 6.3 kHz standâ.dalignment
râpe.Adiust the a2imurhadjuitingscfew836 N. Aftef
adiustment,
repeâtedlyrta( andrlop the tapeseveral
rimeeto ensure
no arimuthdeviation.
rt

cD-t20
5&2 ir.Lr Adilnrn nr
SET
UP
1.Powsrvoltâgp: DC4.5V
2. B.n.ch.ck3witch
po6ition: ON
PNOCCOUNES
l. S€tuptheunilforths
pl.yback
mode
ofoper.tion.
2. Apply an €)(tmalDC4.5V source
to theDC 6 V
iack.
Adiu3t R3(Ë so that th€ rrt€r raâdingi3 oVU
r-{ == fti-
ilæ
ti
583 H.d AzimorhAdiuirn nt
SIT UP
. 50/60
Hz voltâgêrâædfor the unirto be uæd
ina mârkelcouniry.
. oc6v
2. Outputt€rminâl: LINEOutpnt
3. EO3witch
po3itioô: 120lrs
4. Têntâp€ur€d: MTT-115C
PNOCEOUNES
1. Plâythe l0 kHz portion ot rtu t8st tâp€MTT.
Il5Cbâck.Adiustth. hêd âzimuth.cljustingscrcw
formôximumVTvM r6.d.
2. It thê
peôk
ouout re.di ot the
right
.nd leftchan-
nsk are differenl, sot ths scrswsto obtain the
msdrânicâlcanterb€tw€€nùs p€âk3.
cauTtot{
After adiuslmont, rep..t tha phybackândstopsotting
â few tims3 to mak3 ca.tain of no h!.d âzimuft
a]
J.
rl-

5B-4T.p€
Sp{sdAdiu3rm.nr
SEIUP
. 50/60 H, AC voltagerated
lor rheunit ro be
used
inamârketcounrry,
. DC6V
2-Ourput
terminal: LINÊ
Output
3-Test
tape
ured: IVTT1lI (3
kHztone)
4. Unit
positaon:
Horizonrâl
PROCEOUNE
Pray
rhemidposition
of therestrapelvlTT
111bâck.
Adjust the tape speed
adjusrinqsemi{ixedresistor
3000
i5 Hzcounrerindication.
cauTtoNs
l- For adiustment
ùe unit shoutdb€ ser
up rn rne
ôormal
ope.âtin9condition.
2. Do not proceed
rhe semi{axed
resisror
moreru.ns
3.Do not proceed
with adjustment
aftertheunit.
It a strong
shock
or similâr vibration
ieapptied
ro ùe unit after adiustment,make
cerrâin$at the
measured
rapespeedhad
notchângd.
lf the speeddeviarion
o.cu6, p€dorm the âdiurt.
6. 8e câreful that the counrermay indicalea wrons
value
because
of roo low countertevet,
7. Beforeadjustmenr,
allow for 30 seconds
or mor€
arlerdepressing
of thePLAY puehbufion.
rt
58.5 Plâybûck
OurputLevêlAdjulimrnr
SElUP
. 50/60Hz vohâgerat€d
lor thê unit to D€useo
in
a
môrket
counrry.
. DC6V
2.Oùrputærminâl: Terminat
No.
8,9ofDotby
tC
or09
3. EOswitch
position: 120!S
4. Test
tapeused: MTT 150
PBOCEOUR€S
1-Play
thetestrapeMTT.I5o
plâyback.
Adjult R
118
ândR2l8 (20
kO each)for 775mV plâyback
out-
2. Pro.èedboth for the raght
andlelr channets
in rhe
CAUTION
Thisadjustmentshouldb€ performed
aft€.theo.e lor
the playback
equalizer.lf th€ playbâck
equalizer
is
adjustedatter the plâybâck oùrpur adiurtment, Îhe
praybâck
outpùrshouldbereadjurred.
i1';ry*",*
icTa;?
fift.a<a ! g-; re-:
r-drr{ rÂ/l!.
a
('è;

CD.&ro
5BOPlryùd.C$.ll..r Adlu.ùnûrt
sETU'
. 50/60 Hz voltlcp r.lrd for th. unit !o b. ut d
in amarkatco{rntry.
. DC6V
2. Output ormin.l: LINEOrtput
3. Eo.wildr p6iilon: l20lA
4, T.ttt!!.: MTT-Il6C
?ROSEOUlEI
| . Pl.v dr. i.r t p. MTT-l'l 6C.L.t ifi. 33(lH2.ignd
lavalbaratarûrcaaa
0 dB.
2.Adlun Flls aû R215
13
kO.æhl for l0 kHz
laaquancy
raaponaaol 0 to 0 dg in rafronc. to
'!ho 33:tHz.l!n.l levrl.
3. Proclld bodr for lh! right ândleft ch.nn.l. in th.
4. Nor. th.t clækwi.âlrtrnin! ot Rl16 .nd R2l5
vrill
incr.r. rh. l0 kH:.ign l ootput
l.v.l.
!
U
'':
I
Ir
.:
i
t
tI
ti
I
6Èt VUiLt r Adiuûrni
3E1U?
. 50/60Hr AC volt.g. r.t d for ùâ unil to
utad
in. markatcountry.
. oc6v
2. TAPÊ
t l€ctor.widr pÛ6itioô: NORMAL
3. Lord: Masuringinaùu|rrnt input impsdânca
4. Outputt rminâlur.d: Tormin.lNo.8,9 of
Dolby
lCOlOg
?NOGEDUNES
1. Pbvth! t slt P. MTT'IsO.
2. AdiutrRl36.nd R236
(2kQ€achl
uniiltho
VU
lll.tlr poinÈr d.ll.crs to tho DOLBYnr..k (OO)
o.r thoVU nra!.r.

cD-320
v
r'
5B-8 Recordins
CurrênrAdiustmcnr
(Tsmpoi.t)
SETUP
. 50/60 Hz AC volrâgÊ
raredtor the unrr ro oe
usedin
âmarket
country.
. DC6V
2. Inpursignal: I kHz, 60dBsignal
3. TAPEselector
swrlch
posrt,ons. NORMA_
4. Loadi Nlearufing
instrument
input imp€dance
PBOCEDURES
1.Stop lhe .€cording
bias currentosciation by
drsconnecring
thebiâscircuit
+B
resistor
{R314).
2. Disconnecr the recording head shietding ,eaos
(sroùndingleads)âr J302 {L channet)
ând J302
(R €hânnel).Insen
â 10 O resistor
berwe€n
the
rerpectiveleads
and rerminak. Connect â VTVM
âcrors
eachresistor.
SettheCD-320in the recording
mode of operarion.
Adiun the semiJixed
.esastors
R146
(L channel)
andR245
{R
chânnel)
untit
the
VTVM reads
0.45mV eâch
chônnet.
3. P.oceed
both for the righrandtefr chânnek
in rhe
4. Afrer adiustmenr,r€tease
rhereco.ding
biâscurrent.
(é_4ff.*.-,
Larâî llfn ,e'a-.a.
*€T "."
ffi"^.iëi
.:ô?i'..
5Bg R.cording
Bi.t Curr.nt
Adju.r|nânr
lT.meord)
SETUP
1-Power
voltage: Onlywh€n
the 6 V DC pow€r
voltagE
is primary
for fie unit ôndthispow€r
voltage
asunavailable,
use
AC
power
suppty.
2. TAPE
selecror
switchr NORMAL
PBOGEDURES
1. Dkconnectthe recording
h€ad ,hiêtding
reao,
(groundins
l€ads)
at J302 {L ch.nnet)
andJ3O2
{R ch.nnel}. Inser âr lO O .etistor
bêtw€en
ùs
respective
reâds
andrerminah.
Connecr
a VTVM
âc.ors
eâchresisror.
Serthe
CD,320inthereco.ding
mode
of op€.ation.Adjun thesemijixed
resirtors
R166
(Lchânnel)
and
R266
{R
chânne
untit
the
VTVMreads
3.2mVineôchchannet.
2. ForrheCO-320êquipped
with thêTAPE
setector
rwrtch,
make
cerrâin
tharthêVTVMreads
âoorox,
imately
4.2
mVwithir set
to rhê
CrO,
position.
trlr..,,*..
*r.6J
n"*3i_â
â,
nrriasrÀ/â..
iô],."
*iâ
"%à
!y
l0

co-320
5810 Record.Plâybâck F.rquoncyRêspoff. Adiu3t-
SETU?
1. Power vokage: Only when the 6 V Oc power
voltag€is primafy for thê unit .nd fik power
vottageisunavâilable,
ureAC power supply.
2. Input
signal: 1 kHz,
-60 dB with 20
dB refer
encedar0 vU
3. TAPEselector
swirch: Eiat: Low
EO: 70!S
4. Outputterminâl: LINEOUT
5. Load: Mۉsuring
instrumentinput impedance
7. Testtapeused: SONY
CS.30
PROCEOUNES
L Conn€ctthe input signâlto the MIC terminal.
SetuptheCO-32010
the
normalrecordingstâte.
2. ln tuh, reducethe input levêlby 20 dB wiû the
use of the at1enuator.
Recordthe 1 and 10 kHz
3. Play back the I kHz, 20 dBdown recordedtone
âs 0 d8. Adjust rhe semiJixed resistorr Rl66
(L channel)and R266 (R chânnel)
until rhe re'
sponse
at 12.5kHz
is
wilhin
1l dB
as
rel€renced
to
0 dB khe responseat I kHz).
4. Proceedboth for the right ândleft chânnels
in the
5. ll the recording
biat cutrgntisreducedintheabove
adjustmenr,
besureto mea.urethedattortion.
CAUTION
Theâdiurting
rodshouldbê
non_met3lac.
.*i
I f ïr "F t= t Fl
/-1
5Bll Bia!
TrôpAdiunmont
SETU?
. 50/60tlz AC voltâge
ratedfor theunil to be
used
ina
mârketcoutrtrY.
. oc6v
2. Tapeselector
switch
potition: BiatHigh
PBOCEOUEES
1. Setup theunit in rherecording
modeol operation
2. Co.nect fie VTVM to LINE Output ândcollector
of O106.
Adiust Ll01 and L103 lor minimum
4. In turn, connect
$e VTViI to LINEOutpur
(R
ch)
and collector of 0206. Adiust L201 aôd 203 lor
minimum
VTVIVread.
cauTtoNs
1. lf the leakbias
is lestthân the specilied
value,tbe
biastrap need3
not to be adiuitedsince
the ad,ust-
ingcoil isfôctoryPreset.
2. Theàdiusring
rodusedthould
be
nonmetâlrc
-
-
5a-12 Adju3rin!$. Dolby cncuit
l. S€ttheDOLBY NR rwitch to the OFF position.
2. Connecta5 kHzsisnaltotheLine
input
iack.
3. Adiùit the input signal
levêluntil thé outpul vol-
tâqÉât theterminal
No.9 or I of DolbylC 0109
is23.5mV.
4. Tu,nrheDOLBY
NB
lwitchlo lhe ON
posit,on.
5. Adjust th€ LAw CONT semiJixed retistor F3l6
until thé output levelat th6 terminalNo. I or 8 of
Dolby lC Ol09 is 8!0.25 dB higherthan th€ one
obtained
in Stèp 5above.
ll

"";l
v
lt
5&13 Phyb.ck
Sign.lrol{oir. ReiioM..rur.mnl
SET
UP
. 50/60Hz AC voltage
râtêd
for thêunit to bê
usêdina rfiarket
country,
. oc6v
2.EO
rwitch
position: 120ils,70gS
3. Outputterminalr LINE
Ourput
4. Tesi
tâpêused: MTT-I
12
PROCEOURES
t. Load
thetesttap€MTT.I
12.Ssrup
th€unrr
toûe
normal
plâyback
siatewiththeuseof th, LE.C.A-
2. Read
playback
ouçur asa 0 dB rsterênce.Thsn
. playback
blânktape
and
note
thê
outputtevet
drop
in
dB.
3. Pro.eed
bothfor theright
ândlefrchânoek
in rhe
4. Rep€at
theabovêm€asurement
for eâch
tap€setec-
loriwirch
position.
SlAI{OARD
Gr€aterthan
54dB
cauTtoNs
L Arr.ng€the unh pow€r
cord lor hinimum hum
2. Eftec1
by induction nois€s
thouldbêminimtzed
tor
thsmeasurem€nt.
58.14 Phybâck Orilpul L.v!l l$.3ur.|rl.nt
SEI UP
. 50/60 H: AC voltagerated for the unit to De
usêdin âmarket
counùy.
. DC6V
EOswatch
position: 120lrs
Outpuitêminat: LINE
Outpur
Tert
tâp€uæd: MTT-'I
l2
PROCEOUBES
L PIây
lhe tapsbackin th€normât ptaybâck
srâts.
Read
rhêVTVM
indication.
2. Procoed
borhlor thefighr
andt€ft
channslsin the
sTAt0an0
Within
860
mV
t

cD-320
5&15 Pl.yb.ck
Fr.quoncyR.3ponr!
M.â,urômcnt
SETUP
. 50/60 Hz AC voltager.têdlor the unit to bê
usedinamârkercountry.
. DC6V
2. EOswitch
position: 120,1S,70rrs
3. Ourputterminâl: LINEOurput
4.Têntape
llsed: MTT-Il6U
(120!S)
MTT.Ir6K
{ 70lrsl
?ROCEDUB€S
'L Pl.yûe ter tapeMTT-r16Uand
MTT'|16Kback.
Lerthe31.5Hzand 14kHzoutpuilevelb€0 dB
ô!rêferencelevel.
2. Reôd the
31.5H: to 14kHz outpul
leveldifferences
tromthe315Hz0dBreferencelevel.
3. Pro.e€dbothfor therightandlelt chânn€le
inthe
4. Forthsabove
meôsurenEnt,us€thête$ tôpê
MTT'
Il6U for the EO 120
gS position
ônd
MTTl l6K
lor the
EO70
lrsposition.
CAUTIOiI
Sincethe te3t tâpesussd
may involve3am€
h€ad
azimuthdifterence,lhs he.d azimuththould be
correctedai rh€ highenlrêquencyol €achtert tâpe
befor€measuremcnl,
STA]IOARO
In r€ferenceîo rhe315 Hr, 0 dBsignaloutput
lsvê|,
+4to 4ât40Hz
+4
to
-6 at12.5
kHz
5B-16Rlcord'Playb.ckOutputLsr€l
M..tursrmnt
{.r LlirEOUTI
SEl UP
. 50/60Hz AC voltage
ratedfor rheunit to b€
uædinâmârket counùy.
. DC6V
2. Input: I kHz, 60dBsisnal
3. Loâd: Meâsuring
instrumênrinput impedance
4. Lèvel conùol
position: SRL
lor recordingopera-
5.TAPEselectorswitch
position: NORIVAL,CrOl
and
Fe.Cr
6. Meâsu.ingoutputterminal' LINEOUT
7.Cassêttetapeused: TDKAC21l, AC5ll and
soNYcs,30
PROCEOURES
L Recordthe 1 kHz,_60 dB signâlin the normal
2. Rewindthe recorded
part of tape and play it
back.Fead
theVTVlvl
indication.
3. P.oceed
for the NORMAL'
CrO, andF€-Cr
posi-
tionreach
inthe samemânner.
4. Proceedboih for therightând
lettchannelr in the
STAt{OARDS
1.
NORIVIAL
posirion:
560mV
12
dB
2. CrO,poriîion: 560mV12
dB
3. Fe-Cr
positionr 560mV12
dB
!
t
-

cD-320
58.17 Rlcord-Pl.ybâck,
Hârmonic
OhrortionM.$.
SETUP
. 50/60Hz AC voltâge
ratedfro theunil to b€
usedina rnarket
country.
. DC6V
2. Input: 1kH2,60dBsignal
3. Playback
output level: Same
âs the recoroeo
signallevel
5.Load: Measurinq
instrumentinput impedance
Measuring
output
terminal: LINEOutput
Cassettetâpê used: lDK AC-211,
AC-511
and
soNYcs.30
?FOCEOUBES
1. Record the 1 kHz signal
in the norm.t r€cording
2. Play the recorded
signal
back in rhe normal play,
bæk nate. Calibrate the harmonic distortion
meter to l0o% ar the TNPUT
coNT. adjurt the
adjusiingknobtor minimum
meter
pointer
deftec-
lion, andreâd
theharmonic disrortion.
3. Proceed
both for th€ right ând left channetsrô
lhe râmemanne..
4. Præeed for the NORMAL, CrOz ând Fe.Cr posi.
rionseachin thesame mânner.
STATOAROS
L Less
than 2.5%for rhe NOFMAL and CrO, posi-
2. Lessthân3.5%lor the Fe.Cr
posirion.
CAUTIONS
l. 8e tùre to demagnetize
the heads âsthe measur€d
vâlues
mayd€viate
from theaccu.atevalues,
2, Note thar exce$ive wow and llurrer also causes
devialion
of themeasur€dvalues.
58.18 Rscord.Plâyb.ck Signd-to-Noit.
Rrtio M..r.
SETUP
. 50/60Hz AC voltâg€
raædlor theunh to b€
ur€d
anamârketcounùy.
. oc6v
2. Input: I kHz,
-60
dBrisnal
3. Playback
outpur levelr Sam€as thè r€corded
4. Load: Me$uringinsùument
inputimpedance
5.Me6uring
ourpurærminal: LINE
Ourput
6. Cass€tte
rap€used: TDK AC.2ll, AC-s
.nd
soNYcs-30
PNOTEOURES
l. B€cordthe 1 kHzsignalin3 dB.bov€
rhenormâl
2. Oisconnect
the input sign.l from the macrophone
jack.In $is siate,recordnosignal.
3. Plây the I kHz rignalbackin the normâlplâyback
starc with the use of the t.E.C. A.Curva Fitrer.
Lettheoutpur levêl
bê0 dB asrelerenc€tevôI.
4. Re.d diffefonce bêtween
the recorded 0 dB ref,
erencê
output and
no4iqnâl
ourputlevels.
5. Proceed both fo. the right ând l€ft channek in
tn€sâm€
mânner.
6- Set the DOLBY switch ro the ON position, ano
proceed
with similârmea3urem€nr.
SIAI{OARDS
L Greater
thân 56 dB
DOLBYrwitch.
2.Greâterthân46 dB
DOLBYswilch.
CAUTION
for the ON position of thê
for the OFF positaon
of thê
Arângêthe CD-320 cord lor minimum hùm
14

cD-320
5A-19
Rtcord-PlâYback
Fr.quoncY
R6pont.Môt uro'
SEI UP
1. Power
vottage: Onlywh€nthe 6 V DC pow€r
voltaæh primâry
for theunit and
thispower
voltâge
it unâvâilabl€.
useAC
power
suPplv
2. Input: I kHz,
-60
dBsignal
wirh 20dBas
0VU
3. Playbâckoutput
level: Sam€
âsthe
recordedsig'
4. Load: lvêasuring
instrumentinPut
impedânce
5. Mearuring
ouiputteminal: LINEOurput
6.Cassette
tap€uted: TDK AC_211,AC-511
and
soNYcs-30
PSOCEDUNES
L Record the 1 kHz riqnâl in lhe normal recording
statê. In turn, reduce the input lev€l bv 20 dB
with anattenuâÎor.
Then,
recor-dthe 1kHz,40
Hz,
t0 kHz,l3 kHz,
14kHzand
l5 kHzsisnals.
2. Play the reco.ded1 kHz signâlbâcki. thê normal
3. Let the I kHz, 20 dB-down signal
levelbe 0 dB
as relêrence
level. Readdilference of the 40 H2,
10lHz, 13
kHz,14kHr and
15kH2.ignâl
output
levelsfrom the I kH2
signal0dB reference
l€v€|.
4. Proce€d
lor the NORMAL, CrO, and Fe-Cr
poti-
rions
each
in the s€me
manner.
5. P.oceedboth for the right ând lêlt channeh in
the
sâme
manner.
srat{0aR0s
l. NORMAL
position:
40Hz
_ l0 kHz . +4,
-6 dB
withDOLBYswitch
aIOFF
2. CrO:
posit'on:
40Hz
- l2-5kHz . - +4,
-6 dB
wilh DOLBY
switch
âtOFF
40Hz- l2.5kHz .. +4,-6dB
wiû DOLSY
switch
âtOFF
4. NORIVIAL
CrOl andFe_Cr
positions:
40Hz'- 12.5kHz +5,
-7 dB
withDOLBY
twitch
atON
58-20 Er$ing
EtlêctM.aturâîunl
SET
U?
1. Powervoltage: Onlywhenthe 6 V DC power
voltag€is primaty
lor theunit and
thit porer
vottâge
is
unavâilâble,
us€
AC
power
supplY.
2. Input: 100Hz, 60 dB signâl
with+10 dB at
0
vu. Santeas
the recorded
sig.
4. Loâd: Meâsuring
inttrumenl
inputimpedance
5. TAPÉselector
switch
positionr NORMAL, CrO,
6.Câsrette
tapeused: TDKAC2l1, Ac_stl and
soNY
cs'30
7. Fiher
used: 100
Hzb3nd'Pass
liher
PEOCEOURES
IÙRecordthe l0O Hz inpui signal
in the norm.l
2. In turn, increas€th€ input levelbY l0dB with the
attenuôtor,
and
record
it
3. Fêwind a half ponion ol lhê l0 dB_up
râpeând
record in no-.ignalstate,or erat€,on the portion
wrth the inpur signaldisconnected
lrom lhe mic.o_
4. Play back in the normal plavback
sÎâæthe input
rignal
recorded
in rhenorm.l .ècordingstate
5. In rurn, lel the 10 d8-up recordedtign.l l€vel
be 0 d8 as relerence
level.Readdifference
of thë
levelât the eràsed
po.tion fiom the 0 dB referenc€
srar{0a80
Greâter
than55dB.
uli
r.:-1
LJ Ëlif . -
tl
;iË
r^
al
.)-
,--|
-il
i:.r
F--.-l - r
LrN -
__l
_t. l-1-l
': r' 1oo"".."..
1=-t
a - --.:- t--|
lâ I I :t 1 t I
J\ Ul

cD-320
58-21 Lêâk8ia! Mêasursmônl
SET
UP
. 50/60 Hz AC voltagerâted lor the unit 10 be
used
in amarkel
country.
. DC6V
2. Input: 1kHz,
-60dB
signal
3. Loâd: Measuring
instrument
inpul ampedance
4. Levelconùol
Position: SRL
5. Tâpeselectorswitch position: NORIVIALCrO,
Pn0cE0u8Ês
1. Record
the1 kHz
inputsignâl
inthe
normâlrecord'
ingstate.Let the monitor outpû level.t $e LINÊ
.OUT lerminal be O dB at r€fercnc€
level. Read
difference of the output level having the Inpul
rignaldisconnected
from the0 dB refer€nce
level
2. Proceedboth lor the riqht andleft channelt
in the
slaf{0aR0
Lowerthan-47 dB
58.22 Cro$ TalkMè$ur.(r|.nt
SET
UP
| 50/60 Hz AC voltagerarcd lor the unil to be
used
ina
marketcountrY.
. DC6V
2. TAPE
selegtor
swhch
position: NORIVAL
3. Loadr Measuring
instrum€nt
inputimpedance
4. lvleasuring
outputterminâl: LlNEOutput
5. Testlape
used: MTT-I21
PEOCEOUR€S
1. Playback
the B channel
on the sideA of rhe 1est
tâpe N|TT121. Assure
lhal ùe output responseat
I kHz b€0 dB as
reference
level
2. ln turn, plaYback
the R channelon the side
B
of the test
tape
NITTl2l. Beâdthe
output
levÊl
deviâæd
from the0 dB reierence
level
STAI{OARO
Less
thân
55dB
CHANGE
OF
POWER
TRANSFORMER
pÀirvrÀiv
vor-race (tor
Europe
Model
onlv)
The CD.32O
is wired ior 220V line volrâge ri 'an De
operaled
wilh llOV AC bv changins
the powertrâns'
lorme,
leâd
wireas
illunrated
58-23
ChannslSêparaiion
Mâ$urem.m
SETUP
. 50/60Hz AC vollâge rârcdfor theunil to be
us€dina
mârketcountry,
. DC6V
2. TAPE
selector
swirch
position: NORMAL
3.MONITORswitch Polition: TAPE
4. Load: Nleâsufing
inslrument
input
ampedance
5. Meâsuring
outputtelminâl: LINEOutpui
6. Terttape
used: MTTl4l
PROCEOURES
1. Playba.kthe L channel
ol rhe t€tt r.pe MTT'
141.Assume
that the output reterenceâ1
I kHz
bê
0dBatrêferencê
level.
2. In rurn,playbâck
the L channê|.
Reâdthe
outpur
levellrom
the0dBreference
lêvel.
sra oano
Lessthan34dB
l6

cD-320
6. BLOCK
OIAGRAI' U"
.
u,
I
l
I
I
z
z
f
J
17