Sony xr 7300 service manual

Page 1

SERVICE MANUAL

A

Dolby noise reduction manufactured under license from
Dolby Laboratories Licensing Corporation.
"DOLBY" and the double~D symbol DI] are trademarks of
Dolby Laboratories Licensing Corporation.

US Model
Canadian Model

EP Model
E Model

SPECIFICATIONS
AUDIO POWER SPECIFICATIONS

Model Name Using Similar Mechanism

XR-7301, xn-7302

Tape Transport Mechanism Type

MG-71-83

POWER OUTPUT AND TOTAL HARMONIC DISTORTIONIUS, Canadian)

17 watts per channel minimum continuous average power

into

4 ohms, 4 channels driven from 30-20,000 Hz with no more

than 1% total harmonic distortion per Car Stereo Ad Hoc
Committee standards.

OTHER SPECIFICATIONS

Power ampllller sectlon FM tuner section
Outputs Speaker outputs (sure seal Tuning range USlCanedian model:
connectors). 87.9 - 107.9 MHz
Inputs Llne Inputs (phone iacksl AEP/E model:
Speaker impedance 87.5- 108.0 MHz
3.2730hms Antenna terminal FM/AM external antenna
Maximum power output connector
(AEP, E model) FM/AM power antenna relay
30 watts per channel at control lead
4 anms- (4 channels driven) Intermediate lrequeMy
10.7 MHZ

*Measured at 14.4 V

Usable sensitivity 110 dB! (75 ohms)

cassette player section Sensitivity at 50 dB quletlng

Tape Prerecorded tape cassette _ lSdBl (75 ohms)
Head Playback head Selectlvity _ _75 dB at 400 kHz
Tape track Mrack Z-channel stereo Slgnal'KO-MHSB l-EIIO

Frequency response

Signal-to-noise ratio tA-weighled) (Dolby NR 0")

65 dB (stereo), 70 dB (mono)

30,18,000 Hz Harmonic dlstortlon at 1 kHz

0.5% (stereo). 03% (mono)

5sda (Type 1L N cassette) Separatlon AOdB at 1 kHz
55 dB (TYPE I cassette) F'ECIUGICY IESDONSS

Dolby NR etlect More than 18dEI (O-type, all-15,000 Hz
CCIH/AHM) Capture ratio 2.0 68

Wow and flutter 0.15% (WFtMS)

Crosstalk Between channels: 0.13 = o_775v (AF)

better than 30 dB

Tuner section
System FM/AM superheterodyne tuner
Computerized quartz-locked

OdB - 1ArV (RF)

- Continued on page

2_

FM/AM CASSETTE cAA STEREO
SONK

Em

Page 2

XR-73OO

AM tuner section
Tuning range US/Canadian model:
530 - 1.620 kHz
AEP model:
531 - 1,602 kHz
E modal:
531 - 1,602 kHz (at 9 kHz step)
530 -1,620 kHz (at 10 kHz step)
Antenna terminal FMIAM external antenna connector
FMIAM power antenna relay

control lead
Intermediate frequency

450 k Hz
Sensitivity 35uV

General

Tone controls Bass :lOdB at 100 Hz
Treble tlDdB at to kHz

Loudness (at -30 dB)
+6 dB at 00 HZ
+5 dB at to kHz

Output lead Line output lead (LINE OUT
FRONT, LINE OUT REAR)
Remote control output lead
(REM our)
Amplilier remote control lead
(AMP REM)

Input lead Remote control input lead
(REM IN)
Auxiliary Ilne input lead (AUX
IN

lnput/oulpul connector

la-pin DlN connector lor the
optional Sony CD player

FEATURE-S

Tuner section

Power requirements
12 V DC car battery (negative
ground)
Dimensions (without bracket)
Main unlt
Approx. 178x50x 145 mm

(w/h/d)

(7v, x 2 x 53/. Inches)
not Incl. projecting parts and
controls
Hldeaway amplilier
Approx. 173x 30 x l35 mm

(w/n/d)

(W. x 13/ x 53/. Inches)
not incl. projecting parts

Mounting dimensions (with bracket)
Meln unlt
Approx. 132 x53 x145 mm

(w/h/d)

(7% x 2% x 53/. inches)
not Incl. proiecting pans and
controls

Welght Main unit
Approx. 2.1 kg (4 lb 10 oz)
Hide-away ampllfler
Approx. 0.8 kg (1 lb 12 oz)
Accessories supplied
Mounting hardware (1 M)
lampere fuse (1)
3.15~ampere (use (I)
12-ampere fuse (1)

Design and specifications subject to change
wllhout notlce.

-Memory preset tuning function allows you to store stations In memory.
0Automatic storing function for quick and easy memory presetting.

Cassette deck section

OThe Automatic Music Sensor (AMS) function locates a selection as lar ahead or as

far back as 6 selections.

¢The thpe Dolby NR system Is incorporated as well as the B-type Dolby NH

system.
General

-Composed of the main unit and the hide-away 4-channel power amplifier with a

maximum power output of 30W per channel.

0Slideout anti-theft chassis allows you to take the main unit away with you when

you leave your car.

-Auxi|iary input for enhanced system using optional Sony car audio.
- Fully electronic volume, bass, treble, balance and fader control with easy-to-read

LCD indication.

This service manual covers the following three models.

Model Recelvlng band Frequency range and tuning interval
. FM : 87.971078 MHZ, 200 kHz step
US and Canadian model FM1/FM2/FM3/AM AM : 53071620 kHz, 10 kHz step
FM : 875-108.!) MHZ, 50 kHz step
AEP model FM1/FM2/FM3/AM AM I 531-1602 kHz, 9 kHz step
FM : 87.5-108 MHz, 50 kHz step
E model FM1/FM2/AM AM : 531-1602 kHz, 9 kHz step or

53071620 kHz, 10 kHz step
adjustable

Major operations and performance of these models are identical.
When differences occur, they are clearly described in the appropriate sections.