Sony tc k 81 owners manual

Page 1

SONY-e.-

STEREO CASSETTE DECK

TC-K8

OPERATING INSTRUCTIONS

Before operating the UM, please read this manual thoroughly.
This manual should be retained for future reference.

(9 1980 by Sony Corporation

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OWNERS RECORD

The model and serial numbers are located at the rear. Record
these numbers in the space provided below. Refer to them when-
ever you call your Sony dealer regarding this product.

Model No.TC-K81 Serial NO. ova... .

WARNING

To prevent fire or shock hazard, do not ex-
pose the unit to rain or moisture.

To avoid electrical shock, do not open the

cabinet. Refer servicing to qualified person-
nel only.

TABLE OF CONTENTS

Features . ............................. 2
Precautions ........................ 3
Function of controls ....................... 4
Connections .......... 7
Recording ............ 8
Recording new materralwhile the tape is running ....... 8
Recording level adjustment ........ r . . 8
Tape EQIBIAS recommendations ......... . 9
Record monitoring .................. 9

Playback
Erasing ..........................
Record muting operation ,,,,,,
Memory sioplplay .........
Auto play .............
BlAS/REC LEVEL calibration .................
Timer-activated recording and playback ..........
Notes on cassettes . . t
Maintenance.
Specifications ...........

Trouble checks ............................ 15
4

FEATU RES

Three-head system with 3&F (Sendust and Ferrite) heads
Separate record and playback heads with optimum gap and im-
pedance result in distortiontree recording and greatly extended
frequency response Sendust and Ferrite heads provide
dynamic range and more durability. and take full advantage 0 . a
new metal tapes. For good tapetohead contact the heads are
mounted in one block. and each head is separately adjusted for
precise azimuth alignment. The threehead system also enables
you to monitor playback while recording.

Logicvcontrolled tunction buttons

Feather-touch function buttons controlled by a microprocessor
are switched directly from any one mode to another. The record
muting button enables you to make a 4~second blank space be
tween selections automatically,

LED peak program meters

The peak meters employ 32 separate LED elements that 'espond in»
stantly to transient signal peaks over a greater dynamic range from
740 dB up to +8dBr and are suitable even for extended dynamic
range metal tapes. Automatic and manual peak-hold capabilities
are provided for more convenient meter reading, This meter is also
used for bias and record level calibration.

Metal tape EQIBIAS position

The increased output level. reduced distortion-ii added high~tre-
quency response and improved SIN ratio of the new metal tapes are
available by the inclusion of this feature

Bias and record level calibration

Bias current can be adjusted to the optimum level for any tape on
the market precisely and eifortlesslyr which assures the ilattest
possible response, Furthermore record level can be calibrated by
compensating for the tape sensitivity. which permits optimumg
iormance of the Dolby NFi system.

Two-motor

Two-motor drive system provides accurate and stable tape trans»
port. A motor for capstan drive is a linear ESL tbrushless and
slotless) motor having an extremely smooth torque.

Closedvloop dualtcapstan tape drive system
Ensures unilorm tape tension and stable tape to head contact.

New Dolby IC
Newly-developed Dolby lC further improves the characteristics and
reliability of the Dolby NFi system.

Timer-activated recording and playback
A timer switch is provided to turn the deck on and off any number oi
times at any preset tlme determined by an optional timer.