Sony xr 7192 service manual

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SERVICE MANAL

Dolby noise reduction manufactured under license from

Dolby Laboratories Licensing Corporation.

"DOLBY" and the double-D symbol DD are trademarks of

Dolby Laboratories Licensing Corporation,

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POWER OUTPUT AND TOTAL HARMONIC DlSTORTION

14 watts per channel minimum continuous average power into

4 ohms. both channels driven. Irom 40-20000 HZ wllll no more
than 1% total harmonic distortion.

Power emplltler section
Outputs Speaker outputs
(sure seal connectors)
Speaker impedance 3,2-8 ohms
Maximum power output
27 W x 2 (at 4 ohms)
9 Wx4 (at 4 ohms)
'Measured at 14.4 V

Cassette player secllon
Tape track rack 2»channel stereo
Frequency response filo-15,000 Hz

Signal-to-noise retio

Cassette
type Dolby B Dolby C Dolby oil
TYPE II. IV 66 dB 76 dB 58 dB
TYPE I 63 dB 73 dB 55 dB

Wow and llutter 0.1% (WRMS)

Tuner section

Tuning range e7.5-1oe.o MHz
Antenna terminal External antenna connector
Intermediate lrequency

10.7 MHz
Usable sensitivity 12 dB! (75 ohms)
Selectivity 75 dB at 400 kHz

Signel-to-nolse ratio 65 dB (stereo), 70 dB (mono)
Harmonic distortion at 1 kHz
0.5% (stereo), 03% (mono)

Separation 35 dB at 1 kHz
Frequency response 30- 15.000 Hz
Capture ratio 2 dB

Model Name Using Similar Mechanism XR-7080/7082/7180

Tape Transport Mechanism Type MG-55D-31
SPECIFICATIONS
MW/SW
Tuning range MW: 531 -1,602 kHz
SW: 5,9506205 kHz
Antenna terminal External antenna connector
Intermediate lrequency
450 kHz
Sensitivity MW: 35W
SW: 35pV
General
Output lead Power antenna relay control
lead
Power amplifier control lead
Tone controls Bass :10 dB at 100 Hz
Treble 110 dB at 10 kHz
Loudness +10 dB at 100 Hz

+ 6 dB at 10 kHz
Power requirements 12 V DC car battery (negative
ground)
Dimensions (without bracket)
Approx. 178 x 50 x153 rnm
(w/h/d)
not incl. projecting parts and
controls
Mounting dimensions
Approx. 182 x 53 X145 mm
(w/h/d)
not incl. projecting parts and
controls
Weight Approx. 1.9 kg
Accessories supplied Mounting hardware (1 set)

Design and specifications subject to change without
notice.

FM/MW/SW CASSETTE CAR STEREI]
S ONY;

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XR-71 92

eatu res

Tuner section

0 SSlR (Sony Super Interference Rejection)
PLL Synthesizer tuner

- Automatic memory function stores a total of
24 stations in memory quickly and easily.

0 Memory scan function scans preset stations
each for five seconds in order.

Cassette deck section

- The auto-reverse function changes tape
directions automatically.

-The C-type Dolby NR system is incorpo-
rated as well as the B-type Dolby NR
system.

. Intro play scans the beginning of each
selection sequentially.

. The repeat play function enables a repeat
play of the selection you are now listening
to.

OThe blank skip function automatically skips
the blank portion longer than eight seconds
and plays back the next selection.

0 The ATA (Automatic Tuner Activation)
function automatically turns on the tuner
while last-winding a tape.

Section Title

Specifications .............................

Features

1. GENERAL

Location and Function of Controls ------

installation
Connections
Tape Playback
Automatic Tuning -------
Manual Tuning ----------
Memory Preset Tuning
Maintenance

2. DISASSEMBLY --------------------

3. ADJUSTMENTS

3-1. Mechsanical Adjustments
3-2. Electrical Adjustments
Deck Section
Tuner Section

..... 3

CD section (when the optional Sony CD
changer is connected)

OThe intro play function plays the first ten
seconds of each selection on every disc,
.The repeat play function enables a repeat

play of the selection you are now listening
to,
- The disc scan function plays the first ten
seconds of the first selection on each disc.
~The shuffle play function plays selections in
random order.

I The ATA function automatically turns on the
tuner while changing discs.

- Manual search allows you to search for a
desired point in a selection.

TAB LE OF CONTENTS

Page

..... 1

..... 11

~13
'13
~13
~15

Section Title Page
4. DIAGRAMS
. 4-1. Tuner Unit Schematic Diagram ------------- 19

4-2. IC501( [z PD755166) Functional

Description ................
4-3. Printed Wiring Boards ---------
4-4. Main Section Schematic Diagram
5. EXPLODED VIEWS -------------------- 31
6. ELECTRICAL PARTS LIST ------------ 36
Mounting Hardware ----------------------------- 42