Pioneer ct 20 schematic

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(1.9 PIONEER

Senate

CIRCUIT & MECHANISM

DESCRIPTIONS ; ': V ORDER NO.
ARP-369-O

STEREO CASSETTE TAPE DECK

T-4D
CT-s4o
CT-ao
CT-74o
CT-ED
CT-54D

CONTENTS

1. MODEL COMPARISONS ................. 2
2. BLOCK DIAGRAMS .................... 3
3. CIRCUIT DESCRIPTIONS ................ B
4. MECHANICAL OPERATIONS ............. 18

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DIDNEER ELECTRONIC CORPORATION 4-1, Meguro 1-Chome, Magmaku, Tokyo 153, Japan
PIONEER ELECTRONICS [USA] INC. 1995 E, Dominguez St, Long BeaCh. California 90810 LLS A,

PIONEER ELECTRON: [EUROPE] N.V. Keecberglaan 1, 2740 Bevanen. Belgium

PIONEER ELECTRONICS AUSTRALIA PTV. LTD. 1787184 Boundary Road, BFseswdE. Vwccoma 3195, Ausbhaua

YH (9 MAY 1983 Printed in japan

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c-r-ao, :30 , ao , 940 .740 , 540

1. MODEL COMPARISONS

The same tape transport mechanism and basic electrical circuits
are used in the CT-ZO, CT-30, CT-40, CT-540, CT-740, and CT-
940. The different features included in each model are listed in
Fig. 1-1 below.

0 CT-40 and CT-940 differ only in style design (color). The
mechanism and electrical circuits are identicali

o The CT-740 differs from the CT-940 in that the tape counter
is a mechanical type, the Dolby NR system is type B only,
and the headphones output has been omitted.

- The CT-30 differs from the CT-4O in that the MS (Music Search)
and REC MUTE functions have been omitted, and the tape
counter is mechanical.

o The CT~20 differs from the CT-30 in that the Dolby NR system
is type B only.

0 The CT-540 differs from the CT-740 in that the MS and REC
MUTE functions have been omitted.

The export destinations for each model are listed in Fig. 1-2.

CTN) (IT-940 CT-740 CTGO cT-ZO CT-540
MS (Music Search) function 0 O 0 _ _ _
REC MUTE iUnreoorded blank creation) function 0 O O - _ _
B & C types Dolby NR system 0 O - O - -
B type Dolby NR system - - O - O 0
Electronic tape counter (four figures LED numeric dispaly) O O ._ _ _ _
Mechanical tape counter [three figures) - - O O O O
Headphones output 0 O - O O -
Fig. 1-1 Different features list
Model
Type Remarks
CT-4O KIT-940 cT-740 CT-30 CT-ZO CT-540
KU O O O O O O U.S.Ai model
KC 0 - ~ - O O Canada model
HE _ o o - - 0 European continent model
HB - O O , ~ 0 United Kingdom model
HP 0 O - O O 0 Australia model
D O O - O O 0 General export model
D/G # - - ~ 0 - U.S. Military model

Fig. 1-2 Export destinations list

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