Sony XR-1790 Users guide

FM/AM
Cassette
Car Stereo

3-867-792-11 (1)

Operating Instructions

For installation and connections, see the supplied installation/connections
manual.

GB

XR-1790

 1999 by Sony Corporation

Welcome!

Thank you for purchasing this Sony Cassette
Car Stereo. This unit lets you enjoy a variety of
features.

Features

General

• Built-in power amplifier (max. output:
35 W × 4 ch) enables you to enjoy a

4-speaker system.

• Digital 12-hour clock (page 5).

Cassette player section

ATA (Automatic Tuner Activation)

automatically turns on the tuner while fast­forwarding or rewinding a tape (page 6).

To maintain high quality sound

If you have drink holders near your audio
equipment, be careful not to splash juice or
other soft drinks onto the car audio. Sugary
residues on this unit or cassette tapes may
contaminate the playback heads, reduce the
sound quality, or prevent sound reproduction
altogether.
Cassette cleaning kits cannot remove sugar
from the tape heads.

GB

Tuner section

• Up to 18 stations can be preset: 12 stations on
FM and 6 on AM.

• Automatic memory function conveniently
stores a total of 18 stations in memory
(page 7).

Precautions

• If your car was parked in direct sunlight
resulting in a considerable rise in
temperature inside the car, allow the unit to
cool off before operating it.

• If no power is being supplied to the unit,
check the connections first. If everything is in
order, check the fuse.

• If no sound comes from the speakers of a
two-speaker system, set the fader control to
the centre position.

• If your car is equipped with a power aerial,
note that it will be automatically extended
when the unit’s power is turned on.

If you have any questions or problems
concerning your unit that are not covered in
this manual, please consult your nearest Sony
dealer.

Notes on cassettes

Cassette care

• Do not touch the tape surface of a cassette, as

any dirt or dust will contaminate the heads.

• Keep cassettes away from equipment with

built-in magnets such as speakers and
amplifiers, as erasure or distortion of the
recorded tape could occur.

• Do not expose cassettes to direct sunlight,

extremely cold temperatures, or moisture.

• When a tape is played back for a long period,

the cassette may become warm because of
the built-in power amplifier. This is not a
sign of malfunction.

• Slack in the tape may cause the tape to be

caught in the machine. Before you insert the
tape, use a pencil or similar object to turn the
reel and take up any slack.

Slack

2

• Distorted cassettes and loose labels can cause

problems when inserting or ejecting tapes.
Remove or replace loose labels.

Table of Contents

Location of controls .................................................4

Getting Started

Setting the clock ..................................................5

• The sound may become distorted while

playing a cassette. The cassette player head
should be cleaned after each 50 hours of use.

Notes on cassette deck tape heads

• Use of cassette tapes over time contaminates

the tape head causing poor sound quality or
complete sound dropout. Therefore, we
recommend cleaning the tape head once a
month or so with the separately available
Sony Cassette Cleaning Set. If the sound does
not improve after using a cleaning cassette,
please consult your nearest Sony dealer.

• In the case of old or inferior cassette tapes,

the tape head becomes contaminated much
more quickly. Depending on the condition of
the tape, as few as one or two playbacks may
cause poor sound.

Cassettes longer than 90 minutes

The use of cassettes longer than 90 minutes is
not recommended except for long continuous
play. The tape used in these cassettes is very
thin and tends to stretch easily.
Frequent playing and stopping of these tapes
may cause them to become entangled in the
cassette deck mechanism.

Cassette Player

Listening to a tape ............................................... 6

Ejecting the cassette ............................................ 6

Fast-winding the tape ......................................... 6

Radio reception while fast-winding a tape

— ATA (Automatic Tuner Activation)

function ........................................................... 6

Radio

Searching for stations automatically

— Automatic tuning...................................... 7

Tuning in by adjusting the frequency

— Manual tuning........................................... 7

Memorizing stations automatically

— Automatic memory function...................7

Memorizing only the desired stations ............. 8

Receiving the memorized stations....................8

Other Functions

Adjusting the sound characteristics ................. 8

Enjoying bass and treble at low volume

— Loudness Function ................................... 8

Attenuating the beep sound ..............................8

Additional Information

Maintenance......................................................... 9

Dismounting the unit ......................................... 9

Specifications ..................................................... 11

Troubleshooting guide .....................................12

GB

3

Location of controls

DIR

GB

DSPL ATA

SEL TUNER OFFLOUD

Refer to the pages listed for further details.

1 Display window
2 SEL (control mode select) button 5, 8
3 DSPL (display mode change/time set)

button 5

4 6 (eject) button 6
5 During radio reception:

Preset number buttons 8

During tape playback:

ATA

1

ATA (Automatic Tuner

Activation) button 6

6 0/) (fast-winding)/DIR (tape

transport direction change) buttons 6

213 64 5

SEEK
MANU

A MEM

LCL

XR-1790

7 LCL (local seek) button 7
8 (volume/bass/treble/

balance/fader control) buttons 5, 8

9 SEEK/MANU button 7
0 LOUD (loudness) button 8
!¡ TUNER/A MEM (radio on • band select/

automatic memory) button 7, 8

!™ OFF button

4