Teac A 7300 RX Service Manual

Page 1

2 track
MASTER
RECORDER

A-7300RX

Stereo Tape Deck with dbx' System

TEAC CORPORATION
51031760 640

Page 2

1. GENERAL DESCRIPTION

TEACS A-7300RX is a high quality stereo tape deck representing a new Generation in the design
and construction of recording equipment. It contains all of the features which made the earlier
A-7300 a highly rated open reel tape deck. In addition the A7300RX has built-in dbx noise re-
duction circuitry for superior live recording capability. This deck includes dbx type I Noise re-
duction system, MPX filter, CUE system, PITCH CONT, EDIT function system, etc.

We have produced the new A-7300RX, to provide complete flexibility in selection of recording
tapes and to provide state of the art quality in your deck.

The basic design of the A-7300RX is highly similar to that of the A-7300. Therefore much of the
information in this Service manual may be applied to the A-7300 also.

* dbx noise reduction system made under license from dbx, Incorporated. The word dbx and the
dbx symbol are trademarks of dbx, Incorporated.

NOTE

1. When placing an order for parts, please refer to the PARTS LIST which is printed separately
from this manual. .

2. File the PARTS LIST manual together with this SERVICE MANUAL, Future TECHNICAL
INFORMATION sheets should also be kept with these.

3. Section numbers and Fig. reference numbers are not directly related.

TABLE OF CONTENTS

1. GENERAL DESCRIPTION .............. 3
2. SPECIFICATION AND SERVICE DATA ..... 475
3. TOOLS FOR TESTING AND MAINTENANCE . 5
4. PARTIAL DIS-ASSEMBLY .............. 6-9
5. PARTS LOCATION ................... 10
6. SERVICING AND MAINTENANCE ........ ll
7. HEAD REPLACEMENT AND ALIGNMENT . . . 12
8. MEASUREMENT AND ADJUSTMENT-
MECHANICAL ...................... 13-16
9. BLOCK AND LEVEL DIAGRAMS ......... 17
10. MEASUREMENT AND ADJUSTMENT-
ELECTRICAL ....................... 18-27
1]. TROUBLE-SHOOTING . .' ............... 28-29

12. DB CONVERSION TABLE AND TENSION/
TORQUE FORMULA .................. 30