Pioneer cta 7 service manual

Page 1

CID PIONEER'

Sefiice
Wanna]

_ A4_____.____~
REPAIR & ADJUSTMENTS

Eta-o
Egg-1: ;-
Dram Q

ID E}!

ORDER

STEREO CASSETTE TAPE DECK

NO.

ARP-450-0

T-A7

MODEL CT-A7 COMES IN SEVEN VERSIONS DISTINGUISHED AS FOLLOWS:

4
Type I Voltage Ramarks
KU AC120J onlv I ust. made!
I I
l
KC I A.C12GJ only 9mm model
_,_ -
HEM AC220V (240v: : European contnem modal
H3 l Aczaav (22W) United Kingdom movfe' I
l .-_ I ~
HP I I Australia wzdc
. ,
D AC120V,220I240/ (swnchablal General exgon mcdal
.
u/G AC12OV, 220v, 240v {switchable} I u.s, Militarv mode:
y

59~52.

This service manual is applicable to the KU type.

For servicing of the other typm: please refer to pp.

2 For the circuit and mechanism descriptions, please refer to the CT-AB service manual (ARP462'O).

CONTENTS

Ce manual d'instruction se reiére au mode (la: réglage, en francais.
Este manual cle servicio Tram del método de ajuste escrito en espafiol.

l. SAFETY INFORMATION 2 9, ELECTRICAL. PARTS LIST ............ . 2A
2. SPEClFlCATlONS .................... 3 IO SCHEMATIC DIAGRAM ................ 29
3, FRONT PANEL FACILITIES ............. 4 11. ADJUSTMENTS ..................... 35
4. DISASSEMBLY .................. 7 FIEGLAGE ......................... 43
5. PARTS LOCATION ................... 8 AJUSTE ....... I ................... 51
6. EXPLODED VIEW .................... 10 12. SU'JFLEMENT FOR KC, D, HEM, HB AND

7' PACKING ....................... 37 HF TYPES ......................... 59
8 P.C. BOARDS CONNECTION DIAGRAM 19 A

PIONEER ELECTRONIC CORPORATION 4-1.. M=u rc 1-Chome, Mega/1.90.1. Tokyo 153, Japan

PlCNEEF ELECTRONICS {USA} INC. PC} Bax 1-60. Lang Beacn
PIONEER ELECTRONIC [EURCPE] N.V. Keecberlgman 1. 274C} E
FIDNEER ELECTRONICS AUSTRALIA PTY. LTD

llfcrnva SDBCI LLSJX.
rem Belgium

79-184 EGLJndaI-y Road, Braestde Vlcnore 3195. Australia

YH © IAN. l984 Printed in Japan

Page 2

1. SAFETY INFORMATION

1. SAFETY PRECAUTIONS

The Iallowing check should be performed for rne
cenllnued prnreeridn of lhe cusmmet Ind service lech-
rnelanu
LEAKAGE CURRENT CHECK

Meaxur: leakage eurrenr m a known eanh greund
lwaler pide, eenduir. etc.) by eenneering a leakage currens
(esur such as Simpson Model 2292 er equivalenl nelween
rne eznh ground and all exposed melal pans at me applir
ance iinaur/eulpul rerrnlrrals. serewneads. men! dverlays,
cenudl shaft, 215.). Plug the AC line eard uI rhe .pgliarree
direnlv mm a 120v AC saHz curler and rurn xhe AC
power swilcn on. Any eurrerll measured must nol exceed
0.5mA.

nor in above
0.5ma

_l_.
T! III
"page me...
erlces
2mm com

@ Also rrsr wllh
plug reyerled L Emir
(Unna AC aderner greune
ell-e .- reaulredl

AC Leakage Tee:

ANY MEASUREMENTS NOT WITHIN THE LIMITS
OUTLINED ABOVE ARE INDICATIVE OF A PO-
TENTIAL SHOCK HAZARD AND MUST BE CUR-
RECTED BEFORE RETURNING THE APPLIANCE
TO THE CUSTOMER

2,?RODUCT SAFETY NOTICE

Many :Iectrical and mechanical pans in me appIizrlce
heve sueeial eaiely relaled enaraczerislla. These are dl-len
rim eyidene from visual inspection nor lhe proleclion
aflorded by lnem necessarily can b: nimined by uxing
replacemenl enmpnnems rated far vollage, wanage. elc.
Heplaeemenr par-rs which have mese spacial salely charac-
rerislic: are identified in rhls Service Manualu

Eleclneal eamponenls having suen tenures are ldenllfied

by malklng wirn a jdn lhe sellernallcs and an lne earls
llsx in :nls Service Manual.
The use dl a subslilule replaeemenl compenenr which
dese not have me same safely chargazristiu as rhe
PIONE R reenrnrnended replacemenl one, shown in me
pans lrsl in mi; Serviee Manuel, may male shack, lirey
or olher hazards.

Product Safuv i5 mminudusly under revrew and new
lndrurions are isxued from time lo urne. For lhe med
inlorrn n, always consuls lhe cumm PIONEER Serrice
Manual.Asunscriprrdnlu,drad dnalmuiesul,Pl0NE a
Service Manual may he derail-led al a nominal charge lrdrn
PIONEER

2. SPECIFICATIONS

A lraex, Zrzhlnnel slered
"R non Sandusl" recamlng/playblcx
edmurnauon head x l, Erasing head xl

Syslern
Heaas ..

Meier .. ac serve nplun rrunor x l
DC reel male l
Wewlluflel Nd rnerernan 0.02m (WRMS)
No more men : 0.005% (DIN)
Fasl Winding Tlrrre Addrux. meeednds
lc-sa lapel

Frequtncv Response

'20 da rzcmding:
Ndrnal lane .20ru 20.000 H1
(30 lo \9.000 Hz 1 a da)
Chroml lane .20 lo 20,000 H:
as re lama Hz : 3 dal
Melallaue . ., 20re20.500llx
I15 la 20,000 H: z 3 as)

la de recerdrng;

chrurne lane 20 la H.000 Hz
Melal lune 20m "5,000 N:

SlgniHONalse nalrd
nelnyNn ass. More xhzn57l15

Nolse Reducunn Eflecl
Dnlbv lwe 3 NR 0N
Delby lypec ma ON ,

Hermunle Dlsmmon

lnpul lSensllrvrry)
LINE (INPUT) .

Ouldul inelerence levell

Merelnan in da lal 5 kHz]
Morelnan is an lal 5 kHz!
No more man 08% la dal

E! rnvllnpul impedanee 120ml

LINE (OUTPUT). ,. .. o.s:lv
leulpullmpedancea k9)
Neadphdne 0,45 mw

(Load lmnedanu a 9i

MISCELLANEOUS

Pwev naduuernenu

KU,KCmoflllx. .ACImVjOHx
HEM model .. AC 220 v, 50/50 Hz
Ha, HP model: Aczwv,50/aa H1
0. DIG models .ACIZDIZ20/14OV,SO/60 HzIswuchabIeI
Puwer cunsulneudn ,

KU, KC rnedels.

HEM, Ha. HP models

0. DH} models

Dnnensigne ,. AZOIW! x laollll lawn) mm

lsrallslm xs-lll: [H] x llelllel In
Weighllwllhaulmzkiging! 73kgl17 Ib7Dxl

FURNISHED PARTS
Operarrng .nslruehom ..
Connecxian rdrd wilh pin plug .

br- A7

SUBFUNCTIONS

. qunedlurnn dignal edunler

- Dnlbv NR syslerh lrvaa a and cl
- Clesec loop dual nearer:
. One loueh MS. ona much rape relurn
- Aum rnorrnor
- Avld upe selecldr luneuan
- Aura ree mule

- neearding level wllnlng 2cm Swllch
- Auld oeding/eower ejeel

- Timer slandhy lunclron

NOTES:
I. Rflellnce Tull:
Normal and LH: DIN SSISIBLA'IIE or :quiv
ere, 0m lsfiIB/BLATU (C10,) or equiv.
2. Rflerlnct awarding Lev Mull 0 GE Inalcillng Izvel H60
nwh/n megnarie level . Ph es casszna relerervee leuell
l lefevzncl Sign! 315 HI
4' WW and Flunll I JIS I3 ka, will! acwsllc compensamn
Iweighledl rrns valuel; D|N 1,150+ wrrh aceusue cemeensaudn
lion (welghled) PEAK value am 45507
5. Frequcncy Rapunse: - Measured al - 20 as level, DOLEY Nn
OFF. level aviation e - 5 dB Wuhan! rndidauen.
e. Signalld-Nmee nali . Meesured al 3111 harmonre dlsleruuh ass
IIM, w ighled mill (ESISIBLATT'I)
7. Sens ry: lnpul level lrnVi required ldr relemee recording level
wilh lnpul inECl level eenrrul ser in maximum
a. Maximum Allowable Inpul: Whrlu decraaaing mung: o! inwl
(nee) level eehlrole and inerussng level ar inaul ,aurs. that is me
maximum inwl level lmV) ll lne pdun wm reeording amplifil!
ourvul wavefolm hecenrae cfiwod.
s. nelerene. Oulpul Level: Flame»: Wlpul Incl when inner in»
decal 0 65.
I0. Thus model do no! ("\pr I recording/playback cannula:
lDINrrvpel.
NDTE.
sumneerrdrrs ind rne design are whine! m pasuue modifiearions
when! fluvial due "7 l'mpravemenl;