Sony xr 7050 service manual

Page 2

R-7050

General
Tone controls Bass tSdB at IOOHZ

Treble tsdB at 10kHz

Loudness +6d3 at 100Hz
+6dB at 10kH1

Output lead Power antenna relay control
Ieed

Power requirements 12V DC ear battery (negative
ground)

Dimensions Approx. 178 x 50 x 160mm

(w/h/d)

(7/5x 2 x 65/. inches)
not incl. projecting parts and
controls

Mounting dimensions
Approx. 182 x 53 x 145mm
(w/h/d)
I7/.x 2/; x 5%
inches)
not incl. projecting parts and
controls
Weight Approx. 1.3kg (2 lb 14 oz)
Accessories supplied
Mounting hardware (1 set)
Fuses (1 set)
FEATURES
Tuner section
e Memory preset tuning function allows you to store
6 stations for each band in memory.
0 Preolse tuning is possible with the digital
synthesizer system.

We deck section

e Auto-reverse function to listen to both sides of a
cassette repeatedly.

eThe Dolby B NR system reduces tape hiss noise
during playback.

eAutom-tic Music Sensor (AMS) to locate the
beginning of a selection during playback.

General

0 Direct function system allows you to listen to the
program source selected last directly.

I You can control the balance of the front speakers
and the rear speakers in e Moeaker system with
an additional amplifier as well as with the built-in
amplifier (Multi-fader system).

eAuto Ioudnes circuit to reinforce the bass and
treble automatically when listening at a low
volume.

OMaxllnunI power output of 25 W + 25 W.

TABLE OF CONTENTS

Section Title Page
Specifications ................................ 1
Features ................................... 2
SECTION 1. GENERAL

l-l . Location and Function of Controls. .2

1-2. Connections ......................... 3
SECTION 2. MICROCOMPUTER SPECIFICATION

(11PD1708AG-765-00) ................ 5

SECTION 3. MECHANICAL ADJUSTMENT .......... 6
SECTION 4. ELECTRICAL ADJUSTMENT .......... 6
SECTION 5. DIAGRAMS

5-1. Semiconductors Lead Layout ............ ll

5-2. Printed Wiring Boards .................. 12

5-3. Schematic Diagram . . . . . . . . . 15

5-4. IC Block Diagram .................... 19
SECTION 6. EXPLODED VIEWS ................ 21
SECTION 7. ELECTRICAL PARTS LIST ........... 26

(r. in o .i o

M. SCAN (memory scan)!
A. MEM (aulomalic memory) button

SECTION 1

: (eject) button

Display window-fl

GENERAL
1-1. LOCATION AND FUNCTION OF CONTROLS

ficasefle insertion door

DIFI (tape Ilansnflrl dilecliorlll»l«
(last winding) bullons

FADEFl SELECT swllch __-..->] m

FADEFI control

LOCAL button
at
D M0 0
H N (monauraiibution
"5.... . . 3 S MAN (manuali +I- buttons
q) D 40 50 60 Bin +

VOL (Volume) control [PUSH POWER -J

swllch/F'ULL BAL (balance) control

LOUD button

%--SEEK +l- buttons
Preset number buttons

%-BAND bullon

BASS contra

DCHDOlby nOIse reduction) button

AMS (Automatic Music Sensor)
button

THEBLE control

0 a-.- it-.n-..---. . 0 .- n-----.n-nt- Hm-a---..-..-.i-n-.~.o