Gates CARTRITAPE II Instruction Manual

I.AJ t F"Yn
7-
/r-c,p
INSTRUCTIONS FOR INSTALLING AND OPERATING
THE GATES CARTRITAPE n SYSTEM
HARRIS
INTERTYPE
CORPOR ATION
Consisting of :
M6211G·PLAYBACK UNIT, MONAURAL
M6 ~ U.~. PLAYBACK UNIT, STEREO
~ 213I-REC QB.QLf1.AYJL~ CK _ ~~I~ MONAU _ ~ AL
M6214F·RECORD/PLAYBACK UNIT,STER . EO
M6219·AUTOMATIC AUDIO SWITCH · £R
M6221·REMOTE UNIT (P· LAYBACK)
M6234·REMOTE UNIT (RECORD)
GATES RADIO COMPANY
A Subsidiary of Harr's·'ntertype Corpororion
QUINCY, ILLINOIS
Ollices : NEW YORK . KOUS10N, lOS ANGELES , WASHIHG10N ,D.C. Elporl: ROCKE I NTERNATIONAL CORP .• H[W YORK CITY . In Canada : CANADIAN MARCONI COMPANY , MONTREAL
18-888-0863-001
,J.:
: ~ ,

2
TECHNICAL DATA
System frequency Response:
:!:.2 db from 50 cps to 12Kc
'
:!:.4 db from -50 cps to 15 Kc
[qualization: Standard NAB Curve
Harmonic Disto rtlon:
Less th a n 1% at normal record level (limited by tape)
Noise :
-so db
Wow and Flutter:
0 , 2% maximum
Output Level:
-IS dbm, adjustable
Output impedance:
600 ohms and 1 SO ohms, balanced (factory wired
for 600 ohms)
Speed:
7-1/2 lPS ± ,04%
Cartridge Handling Capaclly:
AU 3 standard size cartridges ,
Record Amplifier [nput:
Mini mum: -20 dbm @ 150/600 ohms match1ng for
100% on VU meter,
Maximum: +4 to +18 dbm, 10K ohm bridging
Impedances: 600 ohms or 150 ohms (factory wired
for 600 ohms)
Cue Signals;
Tone one: IKc automatically recorded at the start
of th e recording to cu e up tape for playback.
Tone t wo: ISO cycles automatically, recorded at the
end o f t nerecording, lObe used forautomatic starl-
ing of auxiliary equipment,
Tone three: BKC may be record ed When deSired at
any lime during the recording, T his tone can be
u sed for actuating auxi liary equ!pm em such as
slides and film proJectors ,
Ambient Temperature:
+5SoC Maximum
Maximum
Power Required :
M6211F -3S watts
M62131 -40 wans
Dimensions and Weight:
Playback M-6211F
Height: 5-1/4"
Depth: 16-1/2"
Widt h: 12"
We igh t:
21 Ibs.
Record Playback Unit M6213!
Height: 5-1/4"
Depth: 16-1/2"
Width: 17"
Weight: 33 Ibs,
Sw it cher M6219 -
H
eight : 1-3/4"
Deplh: 8-S/S"
Width:
Weight:
R em ote Unit
Height:
Depth:
Width:
Weight:
IS"
8 Ibs,
M6221, M6234-
2-3/4"
5-7/8"
5-3/4"
2 Ibs,
Sw1tcher M6219 -
Input Capacity: /I channels
Cros stalk between channels: -65 db or bett er.,
Remote Uni t M 6221 Playback -
Facilities for remote starting of 4 playback units
with lamp stat us indication,
Remote Record Unit M6234 -
Duplicates aJl the switching on the M6Z13C Record
Playback. U nil i nC , luding status light s .
DEseRI PTION
The Gates Cartri,ape II System consists baSically of the
M62131 Record PlaybaCK Unit.This unit records and re-
produces tape cartrldges that are loaded with a continu-
0us ' Joop of recording tape , This tape varies in length
to produce different playing times,
The Playback Unit is completely transistorlzed and uli-
hzes pri nted glass epoxy ch as s is that are plug-in
modules, The record amp l ifi er a ttach es to the side 01
the playback uni, to become a record playb a ck unit,
The a,utomatlc swi lch , or M6219 , is ava ilabJ e to prov ide
automatic sw itching of up to four playback unit OUtputs
into on console input ,
A ma.ximum of four playbaCK or record/playback units
may be serviced by ' one switcher. SWitchers may be
connected in tandem to accommodate more than four play-
back units. The M6221 pla y back remote control unit is
availabJ e for remotely starling four playback units,
The M6234 record remote unit w1Jl provide remote start-
ing functions for a complate record playback unH, The
pJayback units are designed to be installed in either 19"
rack mounting or conveniant desk mounting.
The follOwing chart lists the equipment [or a basic s y s-
tem and all the acces sori es that are required for different
combinations of umt s,
Qty,
l)nit
M Number
Basic System
'1
I(ecord/P!ayback Unit
M6213r
MulUple System
1
Record/Pla y back Unil
M62131
2-3
Pla y back Units
M6211F
1 S
wi tc her
M6219

Acee s sorie s :
e
mote Unit nla y back (lour sta rt pu sh butloms
w/ run illumination li g hts ) ..... M6 ~:i.l
Remo te Unit ,,8cord Pla yba ck U nit (pro vi des
compir'i e rem ot e co ntr ol sw itchi:t:j [or
1 r c::; ord/playbeck u ni t . M52131 ... M6234
C ue Am pl ifier s :
1 Kc (St op ) . . .. . . ........ . .. ... . .M 6216C
ISO cp s (end of mess a ge) . ...... .. M6 216A
8 Kc (R an dom) .. . . ........ ..... . . M6 216 8
Pcog ra m AmplHier . . .... . . .. ... . ......... M62 lS
Ca r tri d ge S to rage Ra ck (40 cap.) .......... M 598 6
Tape Erase r ...... ......... , . . . .. . 730 -0 102 -00 0
Canrldg es :
Ti me
Mo del
Gates Numb er
EM PTY
f-300
73 2-0 044 -000
40 Se c.
F- 30 OA
732-004 5- 00 0
70
Se c ..
F-300 B
732-00 46 - 000
10 0 Se c.
F- 300C
732- 004 7 -00 0
3- 1 /2 Mi n .
[- 300 D
732- 0'048-000
5- 1/ 2 M in.
F-300 E
732-00
/
-19 -0 00
0 -1/2 Min.
F- 300G
'/;;;2-00 50-00 0
Em p ty
[- 6 00
732-0051-000
16 Mi n .
f-GOOH
/32-0052-000
Em pty
F -1 200
. 73 2-0 0.d -000
31 Min . F- 1
200 r
732-00.')1-000
INSTAL LA TION
U npa ckin g -
The e quipme nt w i11 be r ece i ve d in s af e tr anSi e nt sh i p-
ping c artons . Unpac k t he c on t ent s c a re fully a nd e xa m ine
thorou g hl y for s hip p ing dam ag e . U a ny su ch dama ge is
found, file a cl aim rep ort im me d i ate ly with t he ~ a rr ie r.
The Reco rd /P l ay back a nd P la yba ck Un its ar e sh ippe d
rea
dy fo r des k to p op era! ion. or 19" rac k mounti ng . In
e
ith er c ase ? -1 /4" of pane l space is r equ i red .
For de sk t op mo unting in stall t he [o ur ru bbe r lee t to
the bott om pane l 01 the Pi ay ba c k Un it in t he ho l es
pr ovide d . Us e 6-32 x l/ Z" ha rdware s h ip ped wiLh
th e un it .
2. For 19" ra ck moun ti ng attach th e angl es a nd e xte n-
sion pa ne l to t he sid es of the unit. Wit h the 10- 32
h ardwar e p ro v i ded , USing a sh ake proof wa sh er u nder
e ach s cr ew ' 1ead .
Ins ta llation of Plug -in AmpUHers a nd Rela ys -
The u
ni ts are shippedwith one Program i'. mplifierand the
I Ke C u e !~ mplifle r installed . The additi o na l A mpli fi ers
an d Record !4mplifierrelays are shipped separate io r the
two and t hree t on e un lls.
In t he P l ay ba ck U nit - to add the s ec o nd to ne . p lu g th e
M 6Z16A (1 50 cps) bo ard in to the track m ark ed 150 cps.
To add t he t hi rd ton e 1 plug the M6Z 16 B (8 Kc ) boa rd into
the na c k m ar ked 8 K c.
3
In the Re cord Ampli fi er - to ad d tl1 e s ec ond t one , plug a
574-0106 -000 relay into the soc k et ma rked 150 cps.
(Remove jump er ) .
Wirmq Inst ruc ti on s -'
O bs erve draw i ng 8 4Z 37 21 001 fo r Li1 e mul ti - syst em wir-
ing dia g ra m. T his dr awing shows on e Reco rd P layback
Un il , to ge th er wi lh t hr ee Pla y ba ck Units. one Sw He her.
o ne Pia yb<lck Re mote a nd one Record Rern0t e wired lnlo
a s y~ ; t e m. N otice th at t he un its ar e deslg natr=d a.s A,
B an d C.
Audio Ou tput C on n ec ti ons -
As s ho wn on drawin g 842 361 4 001. the audio outp
ap p ear s betwee n pins 1 a nd 2 on P 1} 0 of e ach pla y ba c k
unit. Th e 1 ev el obtamed from this p oi nt ha s be e n s et
t
he facto ry f or a - 15 d bm from a norma lly re c ord ed tape .
If a lower ou tp ut leve l i s d e s ire d , adj us t- R15 on the
pr i nted playba ck c ha s s is.
Au dio O ut p ut Imp eda n ce -
The Playbac k Amp lifier is w ir ed a t the facto ry for GO 0
oh ms ou tp ut. Observe drawi ng 838 Q218 001 for st .rap-
pi ng infor ma tio n for 15 0 o hm ou t pu t.
..,. , .. ·rjjo Input (Re co rd Ampli fier) -
The Re co rd A mplifier inpu t provi d es a ba l anc ed 50 0/60
ohm in put for -20 dbm or will bridge a balan ced li ne up
to +8
dbm. O bse rv e d ra w ing 842 . 3 746 001 for t hi s w ir -
ing i nf or mat i.o n . •
S
wi tc her a nd Remot e Uni t Wi ri nq I nfo rma tion
Th is inf o rma ti on ca n be fo und on dr aw ing 842 372 1 001,
wh ich is the C art ri tape II Sys tem Wir ing dia gram.
n st a llation of more th an One A utom atic Audio Sw itc he r -
Ob se rve dr aw ing 838 0435 00 1 f or the in st allation in-
st ruc ti ons for conne cti ng mult ip le sw it che rs in tan dem .
S econd a nd Thi rd To ne Relay Co nt acts -
Th e ou tpu t jack for co ntrol ci rc ui tS on each play back
un it is nOg. T he co nt acts on the co nt rol r elays a ct ua te d
by
the se co nd a nd th ir d to nes ar e bro ug ht out on th is
j
ack . The 150 cycles " en d of m essa g e" rel a y co n ta ct s
can be found on termi na l s 4, 5 a nd 6 . Term inal 4 is th e
n
orm all y op en co ntact , t erm in al 5 is the com mon co nta ct
an d te rm ina l 6 is the no rm all y cl o se d co ntac t . Th e ra n-
dom cue re 1a/ te rm in als (:8 Kc) are conne cte d to pins 7.
8 and 9. Compl ete inf ormat ion i s c on t ain ed on sc hema tic
draw
ing 842 361 4 001. T he 150 cycle and 8 Kc relays
do not pe rf or m a ny fu nct io n in the basic p laybac k s yst em .
Th
ey a re ava . il ab ie in Cart ri ta pe II for a ut omated op er -
a
tion s a ll owing a dd itional p la yback units to be st arte d
in s
equen ce or to prov id e imme d ia te sw it ch i ng for ex -
terna l e qu ipme nt . Si n ce Ca rtr lLa pe J[ prov i de s t his
co mp l ete fl ex ib ili ty of ope ra ti on , on ly th e baS ic co nt ro l
wirin g is 's how n on d ra wing 842 3721 00 1. T hi s c ontrol
Il exi bilit y .. all ow s t he stat io n eng in ee r to use the facili -
ties of C art r il ape n to be st a dv a ntage as req ui red for
hi s pan ic ul ar s ta tio n 's in stallat io n .

4
OPERATION
Tape Eraser -
Cartridg e tape recorders do not utilize erase h ea d s.
Therefore, a bulk eraser is requir~d to deg a uss t ape
cartridges prior to re cording. A bulk tape e ras e r, such
as G<lt es No.7 30 0102 000, is recomm ended to properly
erase the tape. Place the tap e e ras er o n tOP of a cart-
ridge and make circular motions. This should be: done
to t he bot 10m and front edge of the cartridge as well.
Continue this operation for approximatel y 15 s econds.
Then slo wly remove the eraser from the cartridge to a
distance Of. about three feet w llh a slow , 51 eady w itb-
dr awal. Onl y then should the power be remo v ed (rom
the t ape eraser .
PLAYBACK UNIT- M6211G
FUnction
RE'ady Light
Part of Whlte,
glows when cartridge is
S102
ins erted prop erl y .
Start "0"
S103 After a cartTldg~ is inserted into
the machine, pressing this switch
begll1s ta pe mOl ion .
Run Light Part of Amber, glows whlJe lape is run-
S103 ning.
Stop Switch S1.02
White, depress to stop tape mot-
"S" ion.
(Norm<ll op eration w ouid be
to allow tape [0 recue)
- -
RECORD AMPLIFIER (Part of M62131 )
Fun c ti on
Record Set S204
Amber, depressJng
this
push-
" R"
button r eadi es the record / pla y-
back comb in ation for recording .
Record
Part oj Amber
Jig ht, when iJluminated
Mode
8204 indicates unit is not ready to
record.
Record St<;JP
S203 White, to stop recording process
H S'~
and automatlca lIy record second
200 cps tone .
Record
Part of White, indicat es unit is in th e
rnd lc a
tion
8203
record mode when lit.
.~3 ndom
S205 Red pushbutton. Actuat es ap-
TO,le p
Hcat ion 0 f th lcd to ne duri ng th e
record process.
~andom
P art of Reel
i llumin ali on,
mo m entary.
Tone
S205
Indica t es ra n do m cu e to ne has
Record ~een aipp li ed to lape.
Indication
To Record -
Adjust thevariablewldth cartridge slot opening bygrasp-
lng the large knob adjacent to the canridge slot with
the thumb and seco nd f inger while pulling the tOp lever
io"",ard With the ind ex finger to release the lock. Set
the slot width 10 t he desireci size . Insert an erased
cartr i dge into the S IOl a nd press fO""'ard until the car-
tridge rests against the stop and the ready light comes on.
Feed audio to the Record Amplifier and adjust the level
controi so peaks read 100 % on th e VU meter. Press the
record set (Amber "R"J on the Record AmpliHer. This
readies the system for the recording process. Cue the
audio and start the recording by preSSing "operate"
(Amber "0") on the Playback Unit .
The lKc StOP ton~ is automaticall y recorded at the be-
ginning of the recording . If the random ("B Kc) cue tone
is to be used, ~t may be applied at an y time durmg the
recording . To do so, pre s s the re d ( "T ") switch momen-
taril y ev ery time a pulse is desired ,
When the time has arrived to conclude the rec o rding.
press th e white (" S") on th e re cording amplifier. Th is
w ~ll stop the reco r ding proces sand in a t wo tone s y stem
automatically msen t he second or 150 cps "end of mes-
sag e" cue tone. T he tap e W ill c o ntinue to run and cue
itself up for play b ack.
NOT;':: JURING THE RECORDING PROCESS TI M J:: SWITCH-
ER (M6219) [S DIS CO NNECTED BY K20) CO NTACTS 3-11
Multiple Segments on One Ca rt ridge -
To record more thanone segment end-to-end on a single
cartridge. press the white stop bUllon (" S") on the play-
back ap proxim ately five seconds after the audio ceases
on the fi rst segment. Then repE)at prescribed record
proc e ss. A five second spac~~C? between recorded seg-
me nts should be allowed to make sure all cue tones on
th e en d of the previous recording ha v e safel y passed the
pla y back head to pr event err atic operation.
CAUTION! PLEAS E REA D - It lS necessary to press "re-
cord stop" at the end of the audiO to remo ve the b ias
from the record he ad. Otherwise ' the cartnd ge may n ot
recue due Lo cue Lo ne era Sure by the bia s appU ed to the
rec o rd he a d .
To
Playback. -
Insert a pre V iously recorded cartndge into a pJayback
until it comes Lo rest against its StOP and the ready light
comes on. Press the operate ("0") switch and the re-
corded segment wHI play back . Allow the cartridge to
run and recue its elf.
Trouble Sh oo ting -
I -
Check system wiring diagram 842 3721 001.
A. Have all the interconnecting wires been installed?
B. Have Ihe indicated Jumpers been removed?
C. Have incorrect jumpers been removed?
D. Is power appJied to all units?
E. Are a lJ the fus es inlact ?
F. Are
th " recorder inpu t levels too high? Check
sound quality at record mooitor Jack.
G. High hum in Record AmplHier? Turo A.C. power
cord over.

IJ - Problems related to cartridges.
A. :'oor sound quality. Poor head contact. Cartridge
pre s sure pads misaligned.
B. Crosstalk or level variation . Corner post in cart-
ridge he s poppGd up, misallgning tape pa st record
head.
MAINTENANCE GUIDE
'NTRODUCTION
This guide h as bee n prepar ed so that a maintenance scheC-
ule can be inst it uted to suit the dem a nds of the s ta tion.
The only mainte n ance system th at provides the neces sary
reliability is PR EY ENT AT IV E M Al NT EN ANCE. Much ha s
ber.i1 written on this sub j ect but a brief explan ati on is in
ordN.
PREll E NTA T IV E M AI NTE NANCE
Preventative mai nte nance Is dif fe rent from repairing or
general maintenance in that the m .. : intell c'. nce work is ap-
plied be fore th ere is a fail ur e. By adopting a schedule of
routine preventative :r.alntenancevery few on-air Lailures
will occur.
~0BIUCATION
I. The bearings us ed in the motor, flywheel, and pres sure
roller are peITflanc ntly lubricat ed and should requiIe no
lubricaUon. They moy be lubricat e d, how e ver, app ~(')x i
mate ly every six months. When l ub rica ti on ~s used - ex -
t reme c a re should be exercised to keep it from cont .:;c ting
he rubb er pinch :-:-lller .
2. A fine 011 may be used to lubricate the motor and cap-
stan beari n gs. Mo lyko te Type G, shouJci be used to lu-
brical e the followi ng . Ref er to Fig. 1.
l. Pres sure rol' er shaft.
2. Soleno1d plung er.
3. Toggle Paw 1.
4. Lifter cam surface.
The pivot nQia~s should be l ubric a ted with machine oil.
REMOVAL or THE TAP E DECK ASSEMBLY
If it should be com e necessary to remove the tape de ck
asse:l:bly proce ed as follows:
1. T.00senthe four screws on TBIOI and take off the wires.
Do not take the screws a ll the way out. When pUlting
thes e wires bac k on the terminal us e car e to matc h up th e
wire numbers.
'2. Remove Lie fOI2:' nuts and washers which secur e the
fronl cas ting :') the \': l~it. Then rO~dte the front casting un-
tH it c!Gars l'H? index adJl~s[ ~ever and la y it beside t he
unit.
3. RCr:1ove t' le five machine screw~ undcable clamp whIch
5
holds the tape deck to the main chas s is.
4. Remove t he thre e sockel head cap screws which hold
t he head bra.ck et assembly to the ta pe deck.
S. Remove the two machlne scr e ws holding the micro-
switch [ 0 the t ape deck. Also rem ov e t he screw holding
I he tie pOint and cabl e clamp.
6. Slide the tape deck forward and out of the unit,
CARE 0 F TAPE HEADS, CAPSTAN, AND PRESSURE ROLLER.
As a result Of th e lubricant used on the tape proper the
following cleanJng s ch edule should be used to assure con-
ti.:lUed high qua lHy reproduC f ion .
1. The tape heads should be clea ned daily to 5 everal times
a week depending on the service. Wood or'lsoprophyl al-
cohol may be us ed for cleaning. Place a cotton swab on
a stick long enough ~o insert ir~ :he cartridge slot, mOisten
and ca refu lly brosh across tr.c heads.
2. To clean the c " psta n and pres sure roHer the tOp cover
of the unit must be remo v ed . The lifter cam may then be
used ,0 raise the pressurerolier u:':>ove the tape deck sur-
face fc·r easy cleaning. Refe :' lo Fig. 1. Us e a cotton swab
moistened with wood or isoprophyl alcohol and clean the
ca pstan and pressu!'~ roller surfaces . Inspect the roller
f or free turning on the bearing and degrad at ion of t he rub-
ber parts. If the roller 1s worr or defooned, inadeql'at e
pressure wJllproduce wow, poorstar,ing and slow speed.
R eplace with Gates parI -'\730 -030 7 -000.
3. Tape heads may become rrlagnc;~ized by l ar ge unbal-
anced pulses through th e record te"d, as well as :[om
strong magnetic liclds. Do not saturate the record u:npli-
her wi '. '1 abnonnally high inpul signals. Magnetized heads
produce excessively high noise on the recorded tape ond
if sever e enough will partially erClse them. Thus, ;h<e
he ads should be demagn etl z ed weekly.
BE LT REP LA CEMENT
In ord er to repl ac e the drive belts the top and bottom cov e rs
at lhe un it must be removed . It Is jest t:"1at the unit is
set on its side to per form t his function.
I . If the old be lt s are to be removed, take them off of the
flywh ee l. At this poLnt a stUf piece of wire with a small
hoo k on one end is very useful. Then usIng the hook on
the wire pu ll th e old belts up through the pulley cutolJt
trom lh e tOp.
2. F eed the new b elts, one at " time, dow L through lhe
pull ey cutout a nd place them around the pulley. Use the
wire topull tl're belts down through the bottom and then
p ia ce them around the flywheel.
HEA D RE PLACEI'v1 E NT
1. To replace hea ds remove th e pin clips from t he pins

(D
INDEX SLIDE ASS'y.
\
CARTRIDGE
HOLD DOWN SPRING
RIGHT GUIDE - "-
CARTRI DGE
CLIP
CAPSTAN PRESSURE ~. rr ~ e
ADJUSTMENT "'-
LINKAGE SLIDE I
LIFTER CAM SURFACE
TOGGLE PAWL
PIVOT POINTS
"
PULLEY CUTOUT
m
~ 4 .,.,.
$1011111
1 -
.""~
. oO~
\ .- r rf --- ' ''~\f Lt
ot
PRESSURE ROLLER
INSERT TIMING
ADJUSTMENT
, I
.'
"
, ~ ~ ~
.. ; ~ fir
LIFTER CAM
ASS' y,
LIFTER CAM
PROPER
< ~ .
r -- SOLENOID PLUNGER
FIG. I

which are on the rear of the heClds . Make a note of the
w ire color code to make sure they are reinstall ed correctly.
2. Loosen th e he a d cliJmp and remOVe the head. After the
new head is insla lJed refer to Fig. 3 for proper placem ent.
3. For th e final adJustm ent of the heads a azimuth tape
is required. The Gates 73 2 0169 000 a zimuth tape is a-
vaiable for this purpose. Using a meter to read the out-
put level adjust the playback head for maXlmum output.
Record a IS KC signal, and againread the output level of
the playback ampHfier, and a dju st the record head for
maximum outpul. Il is import a nt that the playback heod
azimuth is adjusted first and then record head.
I,.,OCA GLID£ IIG.s~
7
rroHr PPNEc.
, fl Si/Nt:.
3_"'~~ Fet£ ., r
r tt C f.~ t. f./RFIICl ·S M(JS r
8E PR.lUl(..(.€c.
TfG. it!
ELECTRONIC ADJUSTMENTS
l. Repeat necord Bias Current Reading:
T?ICHT Gf./ff].!'
I' IlCIYT 5.r JllFIIC~
o~ ceCl(
Correct Bias Current reads on your VU meter.
2. A.C . Bias Level I\djustment.
'fhe A. C. bias control is a trimmer capacitor located un-
d~r the recorder chassIs. To set the blas remove the bot-
tom cover of the recorder and proceed as follows:
a. Connect a 1 KC signal to the input of the recorder
Adjust the level until the VU meter reads zero or
100%.
b. Insert a bu lk-era sed tape cartridge into the play-
back unIt.
c. Connect an output meter to the output tenninals.
Adjust the meter range so that -15 dbm can be us ed.
d. While recording a I KC signal adjuS;1 the bias level
as read on the meter. (For the left channel (or mono)
use C'2 01 to s 8t bias and C20Z for the right channel.)
e. In crease t he bias to provide -1/2 to 1 db reduction
in the 1 KC recorded level. The bias is now proper-
ly adjusted.
3. Playback Gain.
The playbac k gaIn is set at the factory for a output level
of -15 dbm. T hlS control is a small trimpot (R15) located
7
on the playback amplifier board anel is adjustable irom
the back of the unit.
4. Bias Trap AdJustment.
Should these traps be replaced or mi stu ned in the field
they may be retuned as fQ 11 ow 5:
a. Connect an oscilloscope to J20 2, Pin L in the case
of the left channel, J203 pin L in the co. S8 of the
right channel. Place the recorder in th e record mode
of operation and adjust L201 orLZ02 for minimum 75
KC bias signal observed 1n the scope.
b. The bias oxcillator frequency is set at the factory
to approxim a tel y 75 KC.
S. V. U. Meter Calibration.
In order to calibrate the VU meter an audio oscillator and
distortion meter will be needed.
a. Connect a 400 cps signal to the input of the re-
corder and set the level 6 db above 0 on theVU
meter.
b. USing a bulk erased cartridge make a recording of
the 400 cycle tone. It is best to use a cartridge
'100 sees long. -
c. Playback the tape and measure the total harmonic
distortion.
d. Repeot steps (a) and (b) at variouS record levels
until the loral hannonic distortion Is 3%.
e . When the 3% pOint is found reduce the test oscil-
lator ciutP~t to the record amplifier by 6 db.
f. Changethe value of RB, a 7.5 K ohm fixed resistor,
until the m etcr reads zero. This resistor is found
on the recording (lmpli fier plug-in board. The VU
meter is now proper! y c a librated .
6. Distortion and Signal-To-Noise Ratio.
An audio oscilaltor and di stanion meter is requlred to
perfonn these measurements. Before these measurements
are attempted the heads should be demagnit1zed, clean-
ed, and adjusted properly. An inspection should also be
made to see If the pressure roller is properly adjusted.
a. USing :I cartridge that has been bulk-erased re-
cord a 400 cps tone using a level that is 6 db a-
bovezeroontheVU meter. Refertosleps (a) through
(e) under VU meter calibration until the 3% total
hannonic distortion paint is found.
h. When the 3% third harmonic distortion point has
been established note the output level of the play-
back amplifier. This will be the reference used to
find the signal-to-noiseralio, and IS normail y ap-
approximately a -10 dbm.
c. With no input signal <..!pplied to the recorder Input
make a blank recording '..lsing a cartridge that has
oe~Tl bulk -eras ed., making certain the input i;; prop-
erly tenninated.

8
d. Plu yback this recording and measur~ the noise level
at Lhe output of the playb"c;k amplifier. The signal-
to-ratio is the difference between th e noise m eas-
ured and the relerenc e measured ins t ep (b). This
should be a -55 db or better for mono or -50 db
for Stereo.
e. With the steps performed above reduce the input
LO the record amplifier 6 db, or for a readir." of 0
on the VU meter. T he tot al harmonic distortion
should be about 1%.
7. Overall Frequency Response.
Before an attempt is made to make an overaH frequency
response lhe following should br done. The heads should
be demag:--tetized, cleaned, and properly adjusted. The
A. C. bIas should be check ed for this has an uff~ct on re-
spons e if misadjusted. Refer to A. C. biOI s level adjUE~
m ent for this.
a. Connect an audio oscilla~or~:) the input of the re-
cord amplifier and set :he record level [or a -10 db
as read on ~he VU meter.
b. Using a cartridge that has been buL,,-erased make
a recording u6ing 400 cycles as the reference tone.
Then record a short series of frequencies irom 50
cps to 21 KC, mflking sure that the input signal is
held CIt a const,--ut leveJ. Playback the tape and
note th e rea dings. The reSpons e should be approxI-
mately ±. 3 db.
Factors Which Affect Frequency Response -
1.
Head height and head pos ilioning.
Reier to Fig. 3.
2. Azimith.
3. Worn tape.
4. Pressure pads - as pad pressure is increased the
'1igh frequency output will incr ea se unlil th e pOint
1s fc,-'ched where it wil l level out . Excessive pad
pressure will cause wear to the heads as well as
to the tape.
C/i RTRIt >C£ ,rC6£
- "----- --
(,O:~rN4 ~~P£w
TIIP~ Ne RD
I'.CI'f£rR~TI{)1V
c p~rR/D6~ STO~
;? OJVSTIN6 Sc~Fw
(,II!;rR/06~ !;il'J;O
dh'1
= .
,, ~:s=t!OLib 000 / .. ,x
I I
R(-:C~D PLiW e RCK
It'E~" If~R"
FIG , .3
5. A large accumula.tion of oxide on the heads will re-
duce high frequency output. This has the affect of
holding the ~ape away from the heads.
8. Voltage Measurements.
Refer to the voltages shown on the schematic diagrams.
Usc a 20,QOO ohms per voltmeter.
MECHANICAL AOfLISTMENTS
These adjustments are carefully made at the factory, how-
ever, a periodic checking is required to keep the unit in
peak operating condition. ThIs information is listed below
(check every 6 months).
IMPORTANT -The following adjustments are described
in the correct sequence of adjustm ent.
Right Guide Position
Observe Fig. 2 for details. The right guide should be
sql:clfe to the front of the deck, and .875 inches from the
center of the capstan to the working edge.
Index Slide Assembly
Observe Fig .. 2 for details. This assembly should be po-
sitIoned parallel to the right guide and adjusted so that
the rubber rollers compress a ~ull 1/32" when a cartridge
is inserted. Try several cartridges as they vary sam ewhat.
Cartridge Stop
Ob,serve Flg. 3 for details. This stop prevents the cap-
stan from rubbing on til e cartridge. Adjust th c stop to pro-
vid e 1/32" of clealdnce between the capsta n dnd the car-
tri dg e. Try a number of cartridges as they vary sligh.ly.
Head Penetr:>Uon
Th is should be checked every six months or whenever the
heads are replaced. Obs (;cv e FiJ. 3 for details. Pos iUon
the tape head in the head br,'c:':et so that it penetrates the
cartridge 9/32" .
Head Heighl
ThiS should be checked ev ery 6 month s or wh e never the
heads are replaced. Obs erve Fig . 3 f or details. Adjust
the h ,~ad height by adjusting th e two s et screw s front and
rear. The correct hei.ld height is .562 inch, :I: .002 inch I
to the top of the upper head piece. It is important that
the front edgfC cJf the head be square with the deck surface.
Lift er Cam Pos iHan
Observ e Fig. 4 for de tails. The lifter cam s hould be po-
sitioned so there 1s .020 inch, ::!:..005 inch, clearanc e be-
tween ~he roller lever and th e li fter cam. The shaft of Lhe
ass embly should be pa rallel to the rear of the dec k .
Cartridge In sert Ti min g (Pressur e Roller Adji,::;tment)
Th is adjustm ent should be checked every month. Obs erve
Flg. 4 for details. Adjust thc pas ition of the nylon cap
by turning the soc ke t he ad cap scr ew . Ins ert a cartridge

and adjust for 1/64 inch clearance between the capstCin
and the rubber pressure roller. Try several cartridges as
they vary somewhat. There should be no tape creep,
LfrT£P' CA,.,
Ct:,C,RKIIN~e
O't)
FIG (/
lI"seNT rtI'WNt:;
'#DNsrM4Nr SCfI'r"..,.
CopSlan Pressure (Tape Pulling Force)
This adjustment should be checked once a month. Obs erv e
Fig. 5 for details, Tum the sockel head cap screW Indi-
cated unll.l 1/32 inch compression of the rubber pressure
roller is noted when ~he unit Is in the RUN condition. If
there is too much capstan pressure it will cause the ma-
C:"1ine lO run slow.
C/1~t~ID(;£ CI9;O$7"'1P1Y Ct9J'i'rlltOGE
""'-. ~" STOP
: ~~ Fi~-" ..
\~./ ~Ra" ... ",
----~
FfC, S
Solenoid Pos iti.on (Tape Pulling Force)
This should be checked every Six months, Observe fig ,
6 for details. ' .'he -correct position 01 the solenoid pr:->-
v.ides 1/16 to 1/32 inch of spring stretch at the end of \he
solenoid plllJ ~ ger wh('r. sealed.
Yn ra " .... G.~R/~& .s"~~"",~"" n 'ItE'.o,I ~OLIiNQIO
pl..r.JN(.r;( IS S~lfrCD
PIG_ "
Cartridge ,Adjustments
I. Pressurf; Pads -
9
The purpos e of the pressure pads is to as sure h;;ad-to-
tape contact. When the cartridge is inserted into the
heads they should insert far enough into the cartridge
to push the pads so that they are approximately paral-
lel to the heads.
2. 3rake Release -
As the cartridge is ins erted into the machine the
brake wire 1s moved forward by tho pressure roller
shaft relea sing the braking action on the reel. This
wire should lie Hush with the bottom of the car-
tridg e case, If the win; is located too far into the
cent,:r of the opening there 15 a possibility of the
wire Interferring with the pressure roller when the
cartridge is inserted. This wir;; can be bent there-
fore ch()cking for lhis condition Is Importan' "
3, Cartridge Re,d -
Trlere are teflon washers supplied in each cartridge
assembly and their purpose is to keep the reollevel
free from ~ouching lh c bOllom of the cartridge. Ii
the r~eJ should drag against the cartridg(), the timing
would be affected as well as increosed wow and
flutter con'ent.

PARTS LIST
Symbol No, Descri pt ion
TRANSPORT PART
Leve, Arm A& semb Iy
Comple Ie Index ong SI ide A. ~emb Iy
Pres s '"c Roller
Rolle' leve'
Tosgle Powl
T osgle Leve,
T ogg 10 Soc kct
T ",s ion Sp' ing
Shou Ide r Screw
Sf" ing So lene>id Te ns, on
Heod -B"rocket Ass emb Iy
Moto, 50/60 cps
Pulloy 60 cp~
Pulley 50 cps
B.,It, Motor
Co ps Ion and F Iywhee I ond Beor;ng
Assy.
PorI Nvmber
91J 2159 001
937 9630 001
730 0307 000
8136244001
813 3877 DOl
8133878 DOl
8133875001
8134326001
8133881 001
456 0001 000
927 1116 001
436 OO~O 000
730 0393 000
7300394 000
730 0228 000
730 0395 000
ELECTRICAL PARTS PlA YBACK UNIT M621l/M6212
Cl 01,C 1 03
Cl02
Cl04
Cl05
Cl06
CI09
CRIOI
CR105
F101
Fl02
Jl01
J102, JI03,
JI04, Jl05,
Jl06, Jl07
J 108
jl09
J110, jl07
Jill
KI 02
Kl01, /(103
LIOI
Ploa
PI09
PIlO
RIOI
Rl02
RI03
Rl0d
R112, Rill
R113, RIl<l
RI15
5101
S102
5103
nOI
T8101
Capac ito', .25 vI
C opoe ito', 30- 30 vi
Capac;lo" .1 vi
Copoc iIO(, 40 vi
Copodlo" \ 000 vI
Co pocilo" 5 uf (mo! or 510rl ;ng)
Diode IN2070
D;od~ lN2071
Fuse 1 omp. Slo·8lo
Fuse 20mI', Slo·810
A,C. Rcceplocl"
Rec "proc Ie 6 lermino I
Rec"prac Ie 8 lermi no I
Rece ptoc Ie 10 lermina I
Reeept"e Ie 6 I"rmina I
Phone Jack
Relay
Relay
5,,1 enu; d
Plug 8 !"rmina I
Plug 10 lerminol
Plug 6Ie,min,,1
Resisto" 30 ohm
Res ,slor, 50 ohm
Res iSlof, 220 ohm
Res i .10', 100 ohm
Res' SIor, lOOK ohm
Res istor, 620 ohm
Res i s~o" 100 ohm
Switch
Switch
Switch
Tronsforme, Power
Term;nol Board
XK101, XKI02,
XK 103 Socket, Re loy
XF101, XF102Fv5e Holde,
Mono 2 Track Record-Playback Heod
Slereo 3 Track Ploy-Bock Head
Stereo 3 T rock Record Head
508 0269000
522 0320 000
508 0270 000
522 0301 000
524 0100 000
5JO 0410 000
384 0019 000
384 0020 000
398 0054 000
398 0081 000
6100<101 000
6120373000
612 0005 000
6120006000
612 000<1 000
6120280000
5740108000
574 0106 000
9138946001
6100099000
6100100000
6100098 000
542 1068 000
542 1067000
540 0033 000
540 0308 000
5<10 0097 000
540 0044000
5400166 000
604 0241 000
604 0232 000
604 0240 000
472 0443 000
6140444000
404 0160000
4020023 000
730 0729 000
730 Q731 000
7300730 000
30VDC POWER SUPPL Y p,c. BOARD (PART OF M62111M6212)
C107,Cl08 Copo<i'or, 59 tlf
CRI02, CR103D,ode lN2069
CR104 Diode lN710
QIOI Trons;,lor,2NI183
0102 Trar"i~l"r, 2N1414
Rl0S Resistor, 150 ohm
R
l06, R 109 Re5lslor, 3 9K ohm
522 0258 000
3840018000
386 0019 000
3800012000
380 0014 000
5400458 000
540 0063 000
Symbol No.
Rl07
RI08
R110
XQIOI
XQ102,
XCRI04
Cl
C2
C4
C5
C6
C7
Kl
Ll
Ql,Q2,Q3
RI
R2
R3
R~
R5
R6
R7
RB
R9
XQ1, XQ2,
XQ3
C1
C2, C15
C3, C6
C4,
CI4
C5, C7
C8
C9
CIO
Cll, C12
C13
Kl
II
Ql, Q2, 03,
04,05,Q6
Rl
R2
R3
R4
R5, R20
R6
R7
RS
R9
RIO
Rl1
R12, RIB
R13, R 14
RI5
R16
R17
R19
R21
R22
XQl In,u
XQ6
CI, C3
C2
C4
C5
C6
C7
C8
K1
11
Oeser ipl ion
Res isto" 8.2 K ohm
Resistor, 18K ohm
Res i stor, 62K ohm
Socket
Sock"t
150 CPS CUE AMPLIFIER M-6216A
Copoc;lor, 25 vf
Copocitor, .47 vf
Copacitor, 2 ',If
Copoeitor,25 vI
Copacitor, 20 vi
C"pocitor, 50 ul
R,,1ay
Toroid Coi I
Trons;sto,2NI414
Res istor, 15 K ohm
Res os lor, 621< ohm
Resistor, 13K e>hm
Res ;stor, 10K ohm
Resistor, 27000hm
Res islor, 5100 ohms
Res istor, 1000 ohm
Res iSlo(, 2000 ohm
Res; 5tO', 56 ohm
Socket
lKC CUE AMPLIFIER M-6216C
Copocito(, 22 vi
Copac itof, 20 vi
Capae,tcc, 25 uf
Copoc itor, .22 uf
Copoc itor, 25 uf
Copoe,lor ,0015 vi
Co poc ,10', .05 uf
Co pac i fOr, .04 vI
Capoci~o" .47 vI
Capacito" 50 vi
Reloy SPDT
Toroid Coil
T'onsistor,2NI414
Resislor, 150K ohm
ResisTo" 1801< ohm
Res;stor, 3600 ohm
R""istOf, 6800 ohm
Resislor, 1000 ohm
Resislor, <17K ohm
Resistor, 4700 .o,m
Resistor, 100 ohm
Resistor, 18K ohm
Res i 5to" 1800 ohm
Res,stor, 62K ohm
Res'slor, 2400 ohm
Re~, ~ro" 22 K ohm
R",.istor, 82K ohm
Resistor, 13K ohm
Resi.!or, 15K ohm
Resi.lor, 5100 ohm
Res islor, 2000 ohm
Res is 'or, 56 ohm
Sockel
522 0256 000
8KC CUE AMPLIFIER M-0216B
COpOCil"'< 1800 pf
Co poe ilo" 4700 pi
Capacitor, .001 vi
C"pocilor, .015 vi
C opoc ilor, .003 vi
Co poe ,lor, 390 pI
Capcc,ior, 20 vI
Relay
To,oid Coil
PorI Numbe,
540 0071 000
540 0079 DOl'
540 0092 OC
404 0149 000
404 0066 000
5220178 000
5080267 000
522 0215000
522 0242 000
522 0256 000
522 0258 000
578 0006 000
492 0056 000
3800014 000
540 0077 000
540 0092 000
540 0076 000
540 0073 000
5400059000
5400066 000
5400049 000
5400056 000
5400019000
404 0066 000
526 0002 000
522 0256 000
522 0242 000
516 0386 O('~
522 0178 O·
516 0059001./
508 0266 000
508 0253 000
516038700(1
522 0258 000
578 0006 000
492 0056 000
380 (l014 000
5400101 000
540 0103 000
5400062 000
5400069 000
5<10 0049 000
5400089 000
5400065 OliO
540 0025 000
5400079 000
540 0055 000
5400092 000
540 0058 000
540 0081 000
540 0095 000
540 0076 000
5400077 000
540 0066 000
540 0056 000
5400019 000
404 0066000
5160062000
5160072 00(1
516 00540
508021001-
5160067 000
5160041 000
522 0256 000
5780006 000
492 0056 000

PARTS LIST
Symbol No.
Ql,Q2,
Q3,Q4
Rl, R6
R2, R7
R3
R4
R5
R8
R9
RIO
RII
R12
R13
XQI, XQ2,
XQ3, XQ4
Cl
C2, C14
C3,e4
C5, C13
C7
CS
C9
Cl0,Cll'
C12
OJ, 02
Q3,04,Q5
Rl
R2
R3,R17
R4
RS
)<16,R8
R7,RJ 1
R9
RIO
RI2
R13,R20
RI4
RlS
R16, R24
R18, R23
RI9
R21
R22
TJ
XQI,XQ2,XQ
XQ4, XQ5
Doscripli<>n
Tronsislor 2N1414
Res ;stor 82 K ohm
Res istor, 13K ohm
Resistor, 10K ohm
Resistor, 2200 ohm
Resistor, IIOK ohm
Resistor, 16K ohm
Resistor, 2400 ohm
Resisto" 5100 ohm
R""'stor, 1000 ohm
Res.istor, 2000 ohm
Res ilitor, 56 ohm
Socket
PLAYBACK AMPLIFIER M6215
Copoc.lo(, 22 u1
Capacitor, .01 vI
C"pocitor, ul
Co l'oeil or, ul
Copo,ilor, .03,,1
Copoc ;tor, 500 vI
Copoe ilor, 100 vI
Copocitor, !i vi
Capacitor, 2 vf
TronsiSlor 2NJ307
TrO",;510{ 2NU14
Resistor, IBOK ohm
Res.slor, 100 ohm
Resistor, 150K ohm
Res is' or, 3600 ohm
Resis.lor, 5100 ohm
Resistor, 16K ohm
Res islof, 1800 ohm
Resistor, ohm
ResistQr, I ohm
Res is lor • I ohm
Res.slor, ohm
ReSlslor, ohm
Potentiometer, 10K oh ....
Res j slor, lOOK ohm
Resistor, 15K ohm
Resistor, ohm
Resistor, ohm
Resistor, ohm
Transh:>rfflIH,O!.llpVI
kef
Potl Nvmber
380 0014 000
.540 0095 000
540 0076 000
5400073 000
5400057 000
0098000
0078000
0058000
0066 000
0049 000
0056000
0019000
404 0066000
0002 000
0215 000
0256 000
0242 000
0264 000
0167 000
0185 000
0236 000
0233 000
3800018 QOO
360 001.4 000
0103000
0166 000
0101 000
0062 000
0066 000
0078000
0055000
0075000
0018000
0073 000
0059 000
0057 000
0771 000
5400097000
5400077 000
0089 000
0068000
0041 000
47B 0118 000
404 0066 000
MONAURA Ll5TEREO RECORD AMPLIF IER (M6353/M6354)
A20J
A2Q4
A20S
C201
C203
C2ll4
C205
C206
007, C224
C208
C209
C210
C222,C223
CR201
no.
F202
J201
n(\2, n03,
)204
J205
)206
J20$
Lamp
Lamp
Lomp
of 5203)
01 5204)
of 5205)
Copoeilor, Trimm,,,, 9-180 <.Iv!'
Copoe;I"", 033 vi
Copac;!"r, 33 "vi
iTor, 1000 vi
itor, 20-10 "f
iIO', 50 vi
poe itor, vi
pac",o" vi
Co pac iter, 8 vI
Co padtor, no uuf
Diode, 1 ~2069
fvr-e, • amp, Slow-51"
fvse, 2 omp, :,low-8Io
Reeeptoc Ie,
5000848 000
000
000
000
000
000
000
000
000
516 000
3840018 000
3980054 000
398 0081 000
6120007 000
000
000
000
6120353 000
Symbol No.
J209
Description
j210 Receptocle, Single Phono
K201 Reloy, 4C contacts, nOV.D.C. C01l
K202, K203,
K204 Re loy, 4C conTacts, 11 OV. D. C. Coj I
K205 Reloy, SPOT, 5K ohm
L20 I, L202 I nd \Jclo" Voriob Ie, 4- 30 mh
M201,M202 Meter, VU, w/8 Scale
P201 Plug,
P205 Plug,
P207 Plug,
P208R, P210,
P20SL HoadcQblOi' and Phone Plug
R201,R204
R202,R203
R205,R206
R20B, R209,
R211,R213
R207
R207
R210,R212
R214
R21 5, R216,
R217,R21B
R219,R220
R222
R223
R224
R225
5201
5201
S202
5202
5203
5204
5205
Resistor, 620 ohm
Resistor, 5100 ohm
10K ohm
evel, 10K ohm!> (Mooou,ol)
Level, 10K ohms (Stereo)
;slo., 1500 ohm
Rosistor, 1000 ohm
Res Slor, 100 ohm
Res slo., lOOK ohm
Res slor, 15K ohm
slor, 6800 ohm
slor, 471< ohm
Resistor, 100 ohm
T201 Power T (onsformer
T202 8ios Osc. Transforme,
X F201, XF202 F vseho Ider
XK201,
XK203,X
Soeke,
JOV DC POWER SUPPLY BOARD (PART OF
Cl07 Copacitor, 100 vi
Cl08 501.11
CR102,CR103 Diode, IN-2069
CR104 Diode,lN-710
Ql01
Ql02
Rl0S
R106,R109
Rl07
RIOa
Rl10*
XQIOl
XQ102,
Transistor,2NI183,
T.ans istor, 2N1414
Resistor, 75 ohm
s isto( ( 3900 ohm
$ islol, 8200 ohm
Resis!or, 18K ohm
Resistor, 621< ohm
Sockel,
'NOTE: RllO volue moy vory in Test.
Port Number
612 000
612 000
5740108000
0106 000
0006 000
492 0300 DOD
6300107 000
6100101 000
6100099000
6100098 000
926 7064 001
5400044 OOU
5400066 000
0073 000
0273 000
027'(000
0053 000
0178 000
0456 000
0202 000
0482 000
0069 000
0089 000
5400166 000
6000196 000
6000200000
604 0232 000
604 0234 000
604 0233 000
0443000
0248000
4020023000
404 0160000
000
000
384 0018 000
386 0019 000
380 0012 000
3800014 000
540 0305 000
0063 000
0071 000
0079000
0092000
404 0149 000
404
0066000
PLUG-IN RECORD AMPLIFIER (PART OF M63531M6354)
C J Copo~ ilor, 20u/ 0256 000
C2 ilor, 25 ul 0178 000
C3 .002 uf 0063 000
C4,C9 1001.11 0185 000
C5,C7
C8,C14
C6
CIO
ClI
C12
C13
25 vf
_004 vr
1000 vul
.47 ul
Copocitor, 5 vf
Copoe ""r, 410 uuf

PARTS LIST
Symbol No .
Ql,Q2
Q3,Q4
Q5
Rl
R2, RI2,
R17
R3
R4,R6,R21
R5,"R16,R25
R7
R8
R9
RIO
Rl1,R15
R13
R14
R18,R26
RI9
R20,R24
R22
R23
TI
XQ1,XQ2,
XQ3,XQ4,
XQ5
Descrtption
T ron5;S tor, 2N 1307
Tronsistor,2Nl414
Res i stor , 16K ohm
Res istor, 3600 ohm
Res istor, 20}( ohm
Resislor, 5100 ohm
Resistor , 10K ohm
Res i stor, 6200 ohm
Res islor, 7500 ohm
Resistor, 430 ohm
Resistor , 2200 ohm
Resistor, 51K ohm
Res islor , 3900 ohm
Resistor , 680 ohm
Res ; slor, 820 ohm
Res istor, 2000 ohm
Resislor, 47K ohm
Resislor, 110K ohm
Resistor, 200K ohm
Input Transformer
Sockel
PorI Number
3800018000
380 0014 000
5400078000
5400062 000
5400080 000
5400066000
5400073 000
5400068000
540 0070000
5400040000
5400057000
5400090000
540 0063 000
5400045 000
540 0047 000
5400056 000
5400089 000
540 009.8 000
5400104 000
4780118000
404 0066 000
CAPACITOR BOARD (PART OF M6353 /M6354)
e211
C212 , C213
C220
C214
C215
C216 , C218
C217,
C219,C221
Copocitor, 3.9 1.11
Capacitor , .68 ul
Copoeitor, .0471.11
Copocitor, .004 vi
Copocitor , .005 vI
COp"c;lor, .015 uf
Copoc ilor, .1 1.11
526 0003000
50a 0164000
50a 0267 000
508 0276 000
5080076000
508 0210 000
SOB 0278 000
PLUG-IN BIAS & 3 TONE OSCILLATOR (PART OF M6353 / M6354)
Cl,C2
C3,C4
C5
C6,C9,Cll
C7
C8,e12
Ql,Q2,
Q3,Q4,Q5
Rl,R2
R3,R4
R5
R6
R7
R8,R9
RIO
Rl1
R12
R13
R14
R15
R16
R17
R18
R19
R20
XQ1,XQ2 ,
Ca pac ito" .47 1.11
Capacitor, .01 1.11
CapaciTor, 20 ul
Co poc itor , 25 uf
Capacitor , 2 vI
Copocilo r, 25 uf
Tron.istor , 2NI414
Re,;stor, 10 ohm
Resi,!or, 22K ohm
Resistor, 510 ohm
Resistor , 3600 ohm
Resistor , 12 00 ohm
Res is tor, 1500 ohm
Resislor, 1300 ohm
Resistor, 200 ohm
Potontiometer, 10K ohm
Resistor, 43K ohm
Res is tor, 13K ohm
Resistor, 2200 ohm
Resis!or, 47K ohm
Resistor, 1800 ohm
Resistor, 7500 ohm
Res is tor , 430 ohm
Resistor , 300 ohm
XQ3, XQ4, XQS
Socket
MONAURAL SWITCHER M-6219
C301 Capocitor , 40 vI
CR301 Di
o<le 1 N2070
CR302 !hru
CR309 Diod e IN2071
508 0267 000
506 0001 000
522 0256 000
522 0242000
522 0169 000
522 0178 000
380 0014 000
540 0154 000
5400194000
540 0042 000
540 0062 000
5400051 000
540 0053 000
540 0052 000
540 0032 000
552 0771 000
5400088000
5400076 000
540 0057 000
5400089000
5400055 000
5400070 000
540 0040000
5400036 000
40tl 0066 000
522 0315000
384 0019 000
384 0020 000
Symbol No .
Description
F301,F302
Fuse, lamp.
J301 A. C. Rcceploci e
J302
Reee ptocla
J303,n04
Rece"toc Ie
K301 L, K302L ,
K303 L, K304 L Re loy
P302
PllIg
P303
PllIg
R301
Rosislor , 100 ohm
R302
Resistor, Adj, 41< ohm
R304 , R306,
R308 , R310 ,
R312,R314,
R316,R318
Res istor , 7500 ohm
R319,R320
Resislor, 620 ohm
R321 , R322
Resistor, 10K ohm
5301
Switch
X F301, X F302 Fuseholder
XK301 L/ R,
XK302L1R ,
XK303L / R,
XK304L / R Socket, Relay
S501
5502, S504
S503
S505
S401
S402
5403
5404
5405
REMOTE RECORD UNIT M6234
Sw teh
Sw teh
Sw tch
Sw leh
REMOTE PLAYBACK UNIT M6221
Swilch
Switch
Switch
Switch
Swi tch
Pori Number
398 0017 000
610 0401 OC
612 0007 OOll
6120009000
574 0106 000
610 0101 000
6100103000
5400587 000
5520031 000
540 0353 000
540 0044 000
540 0073 000
604 0244 000
402 0023 000
404 0160 000
604 0240 000
604 0232 000
604 0234 000
604 0233 000
604 0235 000
604 0236 DO' ·
604 0237 000
604 0238 000
604 0239 000

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