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AKAI TAPE
REGI|RDER
Molf
Et
l7 oo AND
l7 to
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IASTE OF CONTENTS
I spEctFtcAnoNs.. .. ...'.....'......
I
I HOW TO A.TEASURE
DESIGNATED
VALUESOF
SPEC|F|CAT|ONS..,...... . . . . . . . . . . . . . .2
'
I t o c a f l o No F c o N l R o r ..s . . . . . . . . . . . . . . . . . . . . . . . . . .3 . . . ,
. .
IV DrsAssEMrLy tApETRANSPoRT
oF uNtTs
ANDAMPL|F|ERS......... ...... ... ... ,l
v TRANSPORI
MECHAN|SL .......... ..... 6
IJ ADJUSTMENT OF TAPE TRANSPORT ................."..
UNIT 9
I I A D J U S T M E F a l 4 p r | F r.E .R . . . . . . . . . . . . . . . ........ . . . . . . . . . ' 1 0
o NT . .
r l f r , { A | N T E N Ap R o c E D U R E.S . . . . . . . . . . . . . . . . . . . . . . . . . . I t
NCE .
X ( L r s l o r R E P L A C E IT A R T s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 2
EN p
X ExpLoDED vtEw oF coMpoNENt p^RTs............ ......,.1,4
x I T R O U 3 L E S H O O CT N G T. . . . . . . . . . . . . . . . , . . . . . . . . . . . . . . , . 2 1
T HAR
n s c H E f i A TD T A G R A , . . . . . , . . . . . . . . . . ....,' . . . . . . . . . . . . . . . . . 2 5
tC .M
xI CoNNECTING ...................-..--.-.-.-......-.26
DfAGRAl.r
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SPECIFICATIONS
MODEL POWJ]R INPU'I'
NUMBER Akai Modcl 1700, portablc 4-track LDVELS: Microphone ir)put lcvcl
st.rco tape rccorder. -55 db (VR. max.jat l,000cps.
wtrGHT (NET Phono and radio input levcl
IN CARTON) 33 lbs (15kg) without acccssorics. 4 0d b ( V R . m a x . ) a t l , 0 0 0 c p s .
DIMENSIONS t3-t6' lH) x 13-%' (w) x 9' (Dl case POWDR
OUTPUT: Pre-Amplifier output, 0.7V at 1,000
cps, impedanc more than l00K ohms.
POWER RE-
qUIREMENTS A. C. 100,
ll0, 120,200,220240
or volts M a i n o u t p u t , 3 4 d b m .u p ( i n 6 0 0 o h m t .
interchangabl. 60cycles.
50 INSULATION
RESISTANCE More than 50MEC ohns.
POWER CON.
SUMPTION 80VA. INSULATION
YI[,LD
RECORDINC STRENGTH M o r e t h a n o r e m ; n u t ea t A . C . 1 , 0 0 0 V .
SYSTEM: Inline 4 t.ack streo and 4-tfack mon-
MONITORINC
SYSTEM With headphor during reco.ding.
PLAYBACK
SYSTEM: Inlin 4.tiack stefeo, monaural play- MOTOR Condenser start;ng induction two-
l / l 0 0 H P . P o w e r f a c t o r , 7 0p e . c e n t .
TAPE SPEED : Thrce speeds
2,900to I,450r.p.m. at 50 cps,
cml and l-%" (a.is cmJper second. (15"
3,480to 1,740 r.p.m. at 60 cps.
pr scondwith an optional accessory
capstan and pinch wheI.) HEADS lnline +tf ack stereo/monau.al record-
.I'APE play had ;
SPEED
DEVIATION : Less than + 3 pef cent at all tape I m p e d a n c e . .. 3 , 5 0 0 h m s + l 0 % z t
o
I,000cps.
4-track erasehead ;
WOW AND
I m p d a n c . . 4 , 0 0 0 h m s + 1 5 % a t 9 0
o
FLUTTER : Lessthan 0.2% at 7-t6ips.R.M.S.
Lessthan 0.3% at 3-7a R.M.S.
ips.
Lessthan 0.45 at l-16ips.R.M.S.
% MICROPHONE
USED: Round dynamic micropho.e
FAST FORWARD
AND REWIND Impedance...50,000ohms
TIME 150secondsfof 1,200 tapc at 50 cy-
ft. S D s i t ; v i t y . . . 5 5d b .
cles and 120scondsat 60 cyclcs. f . q u e n c y R r p o D s e . . . 7 0o 1 5 , 0 0 0
r
FRDqUENCY
RDSPONStr 4 0 t o 1 8 , 0 0 0 c p s .t 7 - % ; p s ;
a SPEAKOR
.L 3 db.80 to 12,000 cps. at 7-l, ipsj INCLUDED: T w o 5 ' x 7 ' d y n a h i c s p e a k e r s .
+ 3 d b . 8 0 t o 1 0 , 0 0 0 c p a. 3 - 3 l a ; p s ;
st Impdance...8 hms
o
+ 4 db. 80 at 4,000cps.at l-7s ips. AllowableIDput...6 warts
Frequency Rsponse...8o ro 12,000
DISTORT'ION Within 4%at l,000cps,oVU ltotal
cps,:! l0db.
TUBES USED : I 2 A T 7x 2 , 6 B M 8 x 2 .
SIGNAL-TO-
NOISE RATIO 40 db below rccorded levlsignal at all SILICON
DIODE USED: l 5 0 D x 2
REELSUSED : Up to 7' rel
CROSS TALK Within 55db between each trach.
RECORDING
CHANNEL LEVEL
SEPARATION B e t t e r t h a n 8 0 d b a t l , 0 0 0 c p s+ 3 V U . INDICATOR : Horizontal,A-modelVU mte..
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VALUES SPECIFICATIONS
DESIGNATED
1I IIOWTO NIICNSURE OF
TAI'I] SPDtrD TOTAL HARMONIC
DEVIATION Reco.d the l,000cps. sine curve of
: DISTORTION
the tap speed at rating spedswith FACTOR: Provide the input terminal ol the
a standa.d sound recorder (AMPEX , e c o r d . r w i t h 1 . 0 0 0 . p s .' : n F , u r v F
351A, for instance) which is little af- signals and .ecord these signals on a
fccted by lhe tape sPecd deviation recording tape at the zero level on the
tlrroughout the whole ingth of the recorder's VU mete.
tape. Put th;s standard taPe on th Then playback the siSnals under the
tapc recorder unde. test for playing no.mal recording condit;on to meas-
back, and nreasure its outPut bY a u.c the distortion factor by an oscil
couDte., then codvert thc value into lator. Remove the recording tapc
rating power frequeDcy to cvaluate from the recorder, then read the noisc
the tape speeddcviatior. lcvelon the oscjllator to 8ct the requ;r-
Fo. a rough measurement, the taPe d dhtortion factor by the following
speddeviation can also be measured formula:
with a testing tape for speedby astop d0:d-dl d2
d0..required
d...overall distortion factor
dl...noise lvel
d 2 . . . d i s t o . t i o nf a c t o r o f t h e o s c i l l a -
to. uscd
\{OW AND
FLUTTER : Playback thc 3,000cps sianda.d tape
SICNAL TO
that guaranteswo\d and flutter with-
NOISE: Playback the sine curve, 250cPS.tape
h 0.07pr cent, aid read the effect;ve
rccorded on a standard recorder on
valuc otr wow mere.
th reco.der to measurthe voltag
Since the sedsibility of wow and flut-
Removc the taPe, then measure the
tcr frequency bclow 2cps and above
noisc level under the same condition
5 cps. d.ops, the frequency over 5cps.
Calculate the ratio between the two
is put to 3db/OCT circuit, and th
in dcibel.
frequency bclow 2.ps. is put to 6db/
OCT circuit for adjustment This ad-
justed value is called auditory com- I'layback on the recorder thc 1,000
cps.
OUTPUT:
sine curvc tape which was recordd
at the zero VU level on a standard
recorder. TrDinatc the test recorder
with ight ohms.
Square the voltag rcading, then di
}.RLqUI]NCY vide the figure by eight ohms to get
RESPONSE: Connccr to thc input tcdninal of the thc r.m.s. Powcr output.
(OVI]RALL rcco.dcr, .ccord a sine curve swecp
I'REqUENCY f.equency at 100cps -10 db. from
CROSS TALK: cps. signal at +3VU
Record 1,000 on
RESPONSE)Audio frequency Oscillator.
Adjusl toDe volume to flat, playback the third tack, then playback this
the tape by .onnectidg VTVM tosp- signal through a l,000cps. Band Pass
aLr out put then read the frequency Filter.
responseto adjusl a maximum devia' Compare the output of tracks I and 3
in decibels.
2-
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f
I LOCATION CONTROLS
OF
o Supply rccl shaft Rewind/FasFforward switch
o Cyclc convcrsion switch Record safety button
0 Capstan storage post Automatic stop switch
@ Stereo headphonejack
@ @ VU hter convrsionswitch
o Tape guide
o trras head @
@ Track slectorswitch
o Right channel volumc control @
@ Right channel tonc control (D Cycle conversionsw;tch
o Left channcl microphone input jack
Right channel microphone input jack Hum adjust (right)
@ Left channel volumc cont.ol (D Speaker output jack (righr)
@ Left channel tone control Speaker output jack llert)
Speed change switch Voltage sele.tor switch
@ Take-up reel shaft Preamp output jack (right)
Capstan shaft o Preamp output jack {left)
(D Pinch wheel @ Phono/Radio input jack (lft
(D Automatic stop lever @ Hun adjust (left)
@ Record/Play switch o Phono/Radio input jack (rish0
@
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I\I DISASSEMBLY TAPETRANSPORT
OF UNITS AMPLIFIERS
&
l l l - o o ! ' , , r h . l t l : . 1 . \I \ l N ( ; S U I l l l \ f i r l o f I ' I N C I t R ( ) L - 1 3 ) L , { i J . ! t h c S ( l l t l i \ \ ' S n r x r l . ( l 1 , , , ) )r . r ir ( j t { l l i , r ( ' ( 1 , . rr o
LI{l , ,lt-'.. ,\vl,v ," !i r.!!^! l)1'lCK l).\\l.ll. tl)1.
ih. l'IN(ill lt()l.l.l lt llil.
12 l.(.,,,,tr tlx. I)llUK C( )\ l R( )I- ti\( )lls ialrnd iblby
| ( ' 1 1l . o o s c i ( h ( iS ( i l t l : , \ \ ' S , , ) r r k . d f , o r ) i . t r , ) k t r .
io,!c,,i,ig d,cif ritx;fing s.raL. u';i)g r I)liillips h.adcd
o
99
I r.t
I
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(5) Loosen the SCREWS narked from {a) to (d).
(8) Loosen the RETAINING SCRDWS of dcck frame
markdfrom (al to id)
Lifl TAPE DECK and AMI'LIFI liR (Dr tr"m ,he
cabinet (B).
(9) SEPA'AICTAPE DtrCK (M) frOM AMPLIFIER (A).
(7) Disconnect the PINS of speako marked {a) and (d),the
PLUGS or motor marked () and (f) and the PINS of
head marked {B)and {j).
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Y TRANSPORT
MECHANISM
Driving of Capstan
Fjgure l.
{Aj Motor
(B) Driving Belt (flat belt)
(C) Capstan
(D) FlYwheel
High-speed rotation of Mot / (A) is reduced by D/trire'
Br, (B) and transmitted to Capstan (C),which is connected
to Flywheel with ample inertia and nables rated rotaiion
by absorbing mino. rotation distortion ofDotor itself.
C a p s t a nR o t a t i o n 6 0 6r . p . m .a t 7 - % ' ( l 9 c n ) p e . s e c .
303r.p.m. at 3-%'(9.5 cm) per sec.
l5l.5r.p.m, at l -16' (4.7s cmlper sec.
Motor Rotation 2,900to 1,450 r.p.m. at 50 cps.
3,480to 1,74{r.p.m. at 60cps.
Fig. I
Driving of Pinch Roller
Put tape between rotating capstanand pinch roller and
push pinch rouer againstcapstan,this will transport thc
tape at ratd sped. Th appropriatepressure pinch
of
roller is betweenI,000to I,150 grams at the tape sped
of 7-%' (19cm)per scond.
Rcoding and Play Back
TuJ[ rhe RECORD,PLA rB,4Cf knob (A) to "PLAY"
position, and pinch roller presses against capstan to move
tape at the rated sped. At the same time, Idlel (B) moves
between Motor &tshitag ICI znd t}:'e Tahe-Ut Reel Spindle
lD) b rr^ns'lr.it the motol /rldtro, to {D) so that th tape is
moved and wound on the take-up reI.
The Tak-Up Reel Spindle Baseis made up of two plas-
tic rollers (l and 2l with a clutch felt in betwn. The ldler
is rot^titg the plastic mUel (2) under. Therefore, the tape-
winding friction is adjustd by the slipping of the felt to
enabl rated winding of the tap.
on the other ha d, the S*pfb Reel Sbtndle IHI h^s a
Blake lo e/ lEl hwg on the Plastic Rollr {4) under which
provides app.opriate back tension by the .lutch fet slipp-
ing to the rotation ofthe Pully (3)above.
To prevent accidental er^sure, the Record lnterloch But-
to, (F) mut be depressedbefore the RECORD, PLAY-
BACK knob can be moved to the "REC" position. The
Safet! dnice lclls depressed to ente. the record mode
(SeeFisures 2 and 3)
Fig. 2
ffi Slipping Rotation
-6-
\
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f
FAST-FORWARD MECIIANISM
TurD lie aASZ FWD-REWIND *no, (A) to "FAST
FWD" position, and ll's ca- (B) undcr lhc knob pushesup
the Lerer (C). The l.tler (D) moves into the spacc bctween
the Plast c Rouer lF) above the Take-Up Reel Spindle and
the uppe. part of th. rotating motor drive bushing to
transm;t the motor rotat;on to the takc-up reel spindle. At
the same tihe, Brale RoUerclH) and (I) cone otr the reel
sp;ndle to free lr, Srrrl! Reel Sti dlelcl,rheteby allowiDT
fast windnrg ofthe tapc onto thc iakc-up rcel.
(Secligures 4 and 5)
FreeRolarion Fl;gh-SpeedRotation
Fig.4
Fig. 5 o
REWIND MECHANISM
"f utn the FAST FWD-REtl/N, izo, (A)ro "REWIND"
position, and the cam lB) u^det $e k\ob ptshes the Leuer
lC) up. The ldlerlDl novesinto thc space betwecnthe up-
per part of the rcIating Motar dtue bushinglE) and the
Internedate Pulle,lF) to hansmit the high-speed rotation
of themotor throughthe intermdiate pulley to tr? Srrrll
Reet Spindte lC). At the sahe time,Brale Rollls(H) and (I)
comeofl the rel spindleb tree the take-atleelspindtelJl,
therby rewinding the tape into rhe supply reel ar a fast
(See
F;surcs6 and 7)
High'SpeedRotation
'J YO
Fig. 7 o
STOPCONTROL
Push ihc stop lever to "STOP" positlon, Bruke Ro els
{A) and 1B)depres reel spindles to stop .otation of the reel
sp;ndles.
(a) sToP o o As thc brake rubbr depfessesthe plastic rolleG under
the .eel spindles,no triction works on the tape itslf.
(b) FAST-FORWARD o
Supply R*l Spindle
(.) REWIND o o R*ind ldle$heel Take-up Reel Spindle
Id) RECORDING
o o
NOTES : x -marks indicates "open" and
O-ma.ks "engaged"
fig. 8
7
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RDCORD/PLAYBACK CIIANGING MECHANISM
B y t u r n i n g t h e R L C O R D / P L A Y B A C K K N O B ( N ) t o t h e r e c o r d i n g p o s i t i o n , h r L E V I i R 1 a ) p u l l st h e R E C O R D I N G
t
L E V E R ( b i a n d ( c ) ,a s ; l l u s h a t e d i n d o t t e d l ; n c , t h e n t h e R E C O R D / P L A Y B A C K C H A N G D S W I T C H ( S W l ) t u r n s
to .ecording position.
I f t h e L I V E R ( c ) d o . s n o t t u r n propc.ly. SWI docs not operatc prope.ly so may occu. the abnormal oscillation and
Then must adjust the LI.VIR ( c l t o p r o p e r p o s i t i o n b y l o o s ; n gt h c S C R E W l c l l .
-
. r il.', ,z--\
'l-a1'1';': ,
Itz__\,/..r',
.'/...
(//
,,-^:,.. ,/
\l/ /
...)._u.
,4)" _
JWt
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r
UNIT
U ADJUSTMENT TAPETRANSPORT
OF
1. ADJUSTMENTOF PINCII WIIEEL 3. ADJUSTMENTOF REWIND IDLER WSEEL
It is imporlant that the piich wheel shaft i5 kept nr The .c\rind idler whccl must be kcpt in complete align-
c o m p l c t ea l i g n m e n t w i t h t h e c a p s t a n h a f t . A p r o p e r p i n c h
s mcnt with thc rewi.d reel shaft. The amount of pressurc
wheel pressur is bctween 1.000 and I,150grahs whcn the to the k,,urlcd motor bushing should be maintained about
unit is ope.ated at the tapc spccd of7-t6 ips. Any devia' 50 gfams during rewidd ope.ation. Adjust both thc idler
tion from this specificalion will result in wow and flutter. load spriog aDd rewind roller.
C h e c k I ' i n . h w h e e l p r e " s u , . b v r . 1 - . r i n g' c a l e a t . d . i f
r , e c e s ay . a d j u " r r h e p i n , h w h p F l l o a d 5 t . i n B .
r
4. ADJUSTMENT INTERMEDIATE
OF WHEDL
Thc intcrnediatc wheel is located between the rewind
2, ADJUSTMENT TAKE.UPIDLER WHEEL
OF idler whccl and thc rubbe. ring vhich is uscd on the uppe.
The take-up ;dlm wheel must be kcpt in complete align- part of the supply reel shaft assembly. When the unit is
ment ltith thc takc-up reel shaft. Whcn the unit is set in sct in rewind mode, it will contact to thcsc parts sihul-
fast forward condition, thc idler whel will contact to the taneously deliverins torque of motor. An adequate pres-
upper knu.led wheel of the takc-up reel shaft assembly. s u . c i s 5 0 g r a m s .A d j u s t t h c l o a d s p . ; n g o f t h c i n r e r m e d ; a t e
and it will contact to thc lower kn urled whccl du.ing record wheel if the pressureis not sufrc;ent.
or play modc. Adjust idlerwhccl load spr;ngsoihatlhc
idler wheel pressurcis kept between 50 and 80 grams. The 5. ADJUSTMENT OF TAKE-UP REEL SIIAI'T
;dler qh..l rapidlv wear. :f Ihf pre*u,. b Px,.ssi\c. ASSEMBLY
The slippage occurs if thc prcssu.e is smallef thaD the A felt clutch mat.rial is attachcd to the bottom sid ol
the reel table basc plat so that reco.ding tapc w;ll not bc
stretched during lhst forwafding operation due to excesivc
tension. To check the amoudt of friction of this part, plac
a S'inch reel with fecordinstape wound by 60m/m in
diameter, and gently pull the cnd of tapc upwarcl using a
spring scale. Adjust the conical sp.ing so that thc amount
of tension at this part will bc kept between 400 to 500
grams. Anothr felt clutch matoial ;s attached to the
takc-up drive wheel. It is to pfovide proper slipping opc-
ration du.ing record or play modc. The procedu.e for
checkins friction of this part ; same as the foregoing, and
between 120 and 200 grams of frictioD will provide the
best result. Adjust the star-shapcd spring jnst under the
takc-up dr;ve whcel. lvhen the unit is set in rewind
mode, the amou.t of f.iction of this part will greatly be
reduced and \viil become I0 to 20 grams. Check to scc
rvhether this is satisfactory ;f iot, readjust the star-shaped
spring fo. Bfakc, and spring rctainef washed accordingly.
l s c c f i s u r e l l ( a la t l e f o
:ir". =..".".,..
6. ADJUSTMENTOF SUPPLY REEL SIIAFT
ASSDMBLY
A felt clutch matoial is uscd between the love. side of
thc reel table base plate and the .ewind rubbcr ring to
protect reco.ding tape from an excesive tension \th;le re-
winding operation. To check thc amount offriction of this
pa.t, place onto thc supply reel table a 5-inch rcel with
rcco.ding tape wound by 60m/m in diameter and gently
pulL thc cnd of tape upward by a spring scale. Adjust
thc conical sp.ing so that thc amount of tens;on ;s kept
bctwecn 400and500grams. Anothc. fclt clutch is attached
to thc re\v;nd drive wheel to provide proper sl;pping
..t, ; ope.atioD cluring reco.d or play mod.. The procedure
for checkn)g friction of this part is same as the foregoing,
and betwen 80 and 120 s.ams of friction will give the
best result. Whcn the unit js set ;n fasi forward modc,
the amount of f.;ction will greatly be reduced and will
Fig. ll become l0 to 20 grans.
Check to sce whether this is proper, if not, rcadjust coil
spring and spring rtainer washc..
{Seefigure I I (b) at left)
7. ADJUSTMENT OF TAPE HEAD
A vertical azimuth alignment of tape head is the only
adjustment that can be made at the field of service. To
align tape head, play 8,000cycles recordcd on an AmPx
standard alignment tape. Rotate th azimuth al;gnment
sc.ew until a maximum playback level through the small
R(/.Ly Hli
hole which is positioned on the shield cover of the tape
Fig. 12 head assembly.
-9-
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tll ADJUSTMENT AMPLIFIER
OF
r. ADJUSTMENT RECORDING
OF BIAS FREQUENCY
Rccording/crasing bias frcquctrcy was set at 90 KC plus or m;nus 5 KC before sh;pment. It is decided by inductance
otthc oscillato. coit lpart * l7-L,) and its resonant capac;tor (part f C-17). To mcasu.e recordiDg bias frcquency, insert
a l0 or 100ohm resisto. ;n scrics to the .cco.d/play head and coDnectvertical ;dput te.minals of an oscillos.ope as showq
in the Fig. 13. ADothcr testirg instrument to be prepared is an audio frcquency oscillator and jtsoutput shouid be conDe-
cted to hor;zontal input terminals .,f the oscilloscope. Vary frequcncy gene.ated by tbe audio frequency oscillator around
'fhc
90 KC, and set the oscillator at the point whe.r a desirous6gurc appears on the oscilloscopc. recordins bias frequcncy
no$' corrcspondsto the reading of the oscillator. Check oscillator coil, C-17 and bias head if the recording bias frcqucncy
mcasu.ed ; not w;thin 90 KC + 5 KC.
2, ADJUSTMENT OF RDCORDING BIAS VOLTAGE
A p.oper rccordnrg bias vottagc is 45 volts + 3 volts A.C.
and is adjusted by Cl6. To measure .eco.ding bias voltage,
coDDcta V.T.V.M. (Vacuum Tube Volt Mete.) to the record
i f^-
/play head as showD ;r the lig. 14. o;.---r:@*=;;'6d.".0,.-""
Check Cl6 (included AKl3) and record/play head if the
recording bias voltage mcasu.ed does not meet to th abovc- Fig. 13
mentioned specificatioD.
L1{0,s.c) -I
li' j(PllLEFT]
Hi|mn-!,(c,lEIcHr)
I#ltlri!i
F;g. 14
3. ADJUSTMENT ERASING
OF BIAS VOLTACE
A prope. rasing bias voltagc is 65 volts + 5 volts A.C. and is adjusted by Cl4. To neasure erasing bias voltage, connect
a V.'[.V.M. to the erasehead as rhown in the Fig. 15.
Chcck Cl4 and crasc head il thc oasing bias voltage measured does not meet to the above,mentioned speification.
#;;;-v'1c' lRrcHr)
I;':I:::j-:- v ' 1i,l l1 LE FT )
v,(P)(RrcHT)
Fig. 15
4. ADJUSTMENT RECORDING
OF LEVEL
A basic rccording lcvcl, .cfefcd to as "oVU", st at th point where
current of 30lA + l0 % flows to the recording head at 1,000 cycls.
The VU neter indicates oVU ! 2 VU wheD a signal of -55 db + 5 db
at the microphone jack or -40db + 5db at the line input jack when
thc volumc control set at its maximum.
Adjustment ot recording level can be accomplishcd by varying sensi-
tivity of VU metft, however, it is not necesa.y to make in a field of
service as all VU mete6 have co..ectly been calibrated at factory befor r
o-, ^ -,nrl ll,,n r"
shipment. (Seelig. l6 for details.)
NOTEi Make sure to stop oscillation by disconnecting the oscillator Fig. t6
coil | 17-L, at the points marked "P" and "G" prior to measure,
ment of reco.ding lcvct.
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.UNMAINTENANCE
PROCEDURES
1. LUBRICATIONINSTRUCTION
For maximum senice life and optimum performance, lubricate the parts idntified below after each 500 hours of
ope.ation. Use only light machine oil of good quality
Motor 3 drops
Drive Capstan Shaft 2 drops
Rewind Idler Wheel Bearing and wind take-up Idler Bearing. I drop
Intermediate Idler Bearing I clrop
Pinch Wheel Bearing 2 drops
Take-up and Supply Reel Shaft Bearing & 2 drops
Also apply a liberal frlm oflight machine greaseto each roller surface of all levers and cams.
CAUTION: DO NOT OVER-LUBRICATE. WIPE OFF EXCESS OIL BY A COTTON SWAB
SOAKED IN ALCOHOL. O'THERWISE,THE OVER.FLOWED LUBRICANT MAY
BE SCATTERI,D DURING OPERATION, THE RUBBER COMPONENT PARTS
WILL BE DETERIORATED.
' tt . 6
r.-'-''' r
FLYWHEEL MOTOR
Fig. 17
2. CLEANING TAPE HEADS AND OTHER PARTS
Wipe surface of tap hads,guide roller bearing, capstan bushing and pinch wheel periodically with a soft cloth soaked
in alcohol or carbon-tet.
It
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il IIST OF REPTACEMENT
PARTS
ParB No. Nomenclalufe
172-0O{t Washe. }in 172-012b Plare. Automaric Shut of
001u Pulley, Reel Shalr
TOP
PAl{Et 001v Screw,without He"d 0l2c Scrw Sen,i-Cubi. 3x5
r7r-0ot
005 ]?Le-up Rel A$embly 013, Mirtu Swirch M-8-3
002 0o5, Reel Shaft A, Tat-up Reel 0l3b Holdef, Switch
00,b Felt Washcr 0l3c Screlv Semi-Cubic3x5
003 m5c T,ke-up Rouer, A 0l3d S c . e wI I a t M o u l d 3 x l 5
005d Spfing G, Risht
00.1a Capstan Holder 005f Takr-up Rolle., B 0l4a SNirh. SpeedChange
005e Holder, Reel Shaf. pP slide swnch Nc)
'rablc 'Iapc
005a A, Guide (Sta. Typr spring) 0l4b Plate, Speed Change Switch
_rnbL
005h Metal Fitlins B. RceL 0l4c S.rew Flar Mould .1x 10
005c Table. Washel oo-i sPrirs, F3 0l4d Co.d Supp.rt
005e Bcaring (635JZZ) olsa Idler Whe.l
O05l Washer Pin
0059 Table, Washer 005n Nylon Spring 0l5c Walher Pin
00si Table D, Tape Guid 006a AS Levcr, Conplete 0l6a Internal Wheel
005j lrop, Tape Guide 006b Plate, AS Levcr, viih AS
Lever ProP 0l6c Washer Pin
006c Screw Bind 3x5
006d Washr Pin
dl6 3 mn eround Lug 0l7b Shaft, Lcv.r A
DECK I
FNA
172001 Deck Fradc 007a Instanr Stop Lever, ]\
007b Spring. In$ant Stop Lever 0l8b Cam Rolle., A
002 H.ad A*embly, Conplctc {]07c Stopper,ln*ant Stop Lever 018. Cam Rollr, B
m2a E.ase Head 007d Screw Bind 3x5 0l8d Washer Pin
m2b Record/PlaybackHead 007e Holdr B, Innant Stop Levc.
002c Scfew Flat Mould 4r8 007f Screw Flar Mould 4xB
002d Prop A, Head 0l9b Washe. Pin
002e Prop C, Hcad O08a Recording Safety Bu(on
002f S..c\Y l.-lat Mould 4xg 008b Cah Sroppe.
002g S..ew Fhr ,1x I 008. Fibe., C,n Sroppe.
000d r.sulator Plate, Can Stopptr
003 Index Counier, Complete 008e screw Fhr Mould 4x8 021 Lcvc., D,2
0I)3a Pulley, Counte.
003b Belt, Counrcr 009a Pinch Wheel
009b Metal Cap, tinch Wheel 022b Can Rollcr, A
003c SGes, Wnhour Had 1x7.5
00+ Supply Reel ^$embly 009d Levr, Pinch Whccl
00{2 Sc.cv l_lnt 3xb 009e Shaft C, Pinch Wh.l
009f 4mm Nut 023b Holdc., L.ve. G Meral
001b Plate, Reel Tabl.
0099 Shaft A, Cam Roller 023c Sropper,Levcr G
00rc Reel Shaft A, Supply Reel
009h C2m Roller B 023d Lever G Metal
004e Rewind Pulley mgi shafr. Pinch wheel Lcvcr
m4f Sp.ins G, Left 02lb Idler Shaft, B
0l0a Lever, Take up Brake
0l0b Take-up B.ake Roler
m{h Washer Pin, La.se
0l0c Screw, B.ake Roller
0l0d 3 nm Nur
0O4j r-ak-upRouer, C
0l0e sbafr, Takc-up Bralc Lcvcr 026a Levr F, lor Motor
004k Holdef, Reel Snaf.
010f Washef Pin
(Sta. Typ. Sprins)
olla Levcr, Supply B.ake
olrb Supply Brake Roller
ollc
027
Screw,Brake Roller
0040 Waiher Pin. large olld 3mm Nur 028
0l1e shafr, supply B.aLe L."..
@4q Metal Fiting,\, Reel Table ollf Washer Pin 029
0O{r golde., Reel Shalt
lslar Type Spring) 0l2a Swnch, Autonatic Shur-of Hun Buchins Coil, f6r Left
(6P slide sritch)
12
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Patu No. Nonenclaturr
172,030b Hunr B!.kins Coil. fo. Righr 17-C2 Mica Condense.10U 500Wv
c3 Ceranic Condenser
0-02P
030c Holder, Hh Bucking Coil 00le 8mm Ball Bearing
030d Screw Scmi-Cubic 3x22 001| S$itch Table, A o4 CeEnic Condcnscr0.02P
032a Lever, Belt Change 00lb Fai/Fonvard Rewind Shaft c5 Oil Paper Condenser0.05M
032b Metal Fitting. Belt change 00li Rcr'Playba.L Resind Shaf.
00lj Pin c6 Cerani. Condenser0.02P
032c Sp.ing, Belr Ch.nge Lever 00lk Plate. Cam
00ll Sp.ing, K c7 Ceramic Condensr
0.01P
033a Table. Lifter Pin
00ln SRitch Ttble, B ca Ceramic Co.densef 0.02P
033c Sporh, fo. Lilte. 00lo Record/llayb2.k Conv.sion
033d Can A, Hcad Lilter c9 Ce.anic Cond.nse. 0.02P
033e C,n B, Head Liftef 00lp Spo.k Cam
ct0 Ce.ani. Condenser
0.002P
034b Sp.ing, UN-D mls S c r e wB i n d 3 x 5 cll 0.02P
Ceramic Condenser
034c Spring. D
034d Spring. D ct2 Tubular Type Elecr.olyric
034e Spring, Idle. Condense.s0 Af 25 WV
034f Nerv Spring D cl4 Mica Cond.nstr lou 5m WV
0349 To.sion Spfins