Sony xr 7550 service manual

Page 1

SERVICE MANUAL

AEP Model
E Model

fifoX/f 27f!

Model Name Using Similar Mechanism XR-7500
MG-55E-31

Tape Transport Mechanism Type

XFt-7550 is made up of XR-7500 and the hide-away unit (power amplifier).
This manual contains only the points which differ from XFt-7500.
Please refer to the XR-7500 Service Manual for related information not contained in this manual.

SPECIFICATIONS

Tuner section
FM
Tuning range 875-108 MHz
intermediate irequency

10.7 MHZ
Antenna terminal External antenna connector
Usable sensitivity 12 dB! (75 ohms)
Selectivity 75 dB at 400 kHz
SignaHo-noise ratio

65 dB (stereo). 70 dB (mono)
Harmonic distortion at 1 kHz

05% (stereo), 03% (mono)

Separation 35 dB at 1 kHz
Frequency response
30-15,000 Hz
Capture ratio 2 (15
AM
Tuning range European countries and countries
other than North and South
America
531 -1.602 kHz (at 9 kHz step)
North and South American
countries
sac-1.620 kHz (at 10 kHz step)
AM tuning interval 9 kHz/10 kHz
switchable
intermediate frequency
450 kHz
Antenna terminal External antenna connector
Sensitivity 35W

Cassette player section

Tape track 4-track 2-chennel stereo
Frequency response
30 - 20,000 Hz

Signat-to-noise ratio

Cassette (

type Dolby B Dolby C Dolby oi

TYPE Ii, IV 66 dB 76 dB 56 dB
TYPE I 63 dB 73 dB 55 d8

Wow and "utter 0.09% (WFiMS)
Power amplifier section (hideaway amplifier)

Outputs Speaker outputs (sure seal
connectors)
inputs Line inputs (photo jacks)
Speaker impedance
2-8 ohms

Maximum power output
35 watts per channel at 4 ohms (4
channels driven)

- Continued on page 2 -

FM/AM CASSETTE CAR STEREfl

ONY;

Page 2

XR-7550

General Mouming dimensions (main unit)
Approx. 182 x 53 x145 mrn (w/hld)
Output lead Power anlenna relay control lead . . .
Power amplifier control lead 2:;ng MEWS pans Md
+
Tone controls Bass -10 dB al 100 Hz Weight Main unil: 1.9 kg

Treble :10 dB at 10 kHz

Hideaway amplifier: 0.8 kg
Loudness +10 dB at 100 Hz . .
+6 dB al 10 kHz Accessories supplied

Remole controller (1)
Connecling cord (2)
Mounting hardware (i set)
R03 (size AAA) battery (2)

Power requiremonls .
12 V DC car banery (negative
ground)
Dimensions Main unit (wllhoul bracket):
Approx. 178 x 50 x153 mm (wlhld)
not incl. projecting pans and
controls
Hide-away amplifier:
Approx. 173 x 30 x135 mm (w/hld)
not lncl. projecting pans and
controls

Design and specifications subject Io change without
notice.

SECTION 1
GENERAL

This section is extracted from
instruction manual.

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