Sony xr 6503 service manual

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XR-65II3

SERVICE MANUAL

East

European Model

Model Name Using Similar Mechanism XR-0223
Tape Transport Mechanism Type MG-SOEX2-39
SPECIFICATIONS
Cassette player section Power amplifier section
Tape track 4-track Z-clmnnel stem Outputs Speaker ou rputs
Wow and flutter 0,08 % (WRMS) (sure seal connectors)
Frequency response 30 - 18,000 Hz Speaker impedance 4 - 3 ohms
Signal-to- noise ratio Maximum power output 25 W x 4 (at 4 ohms)
Cassette type Dolby NR off Dolby 3 NR
TYPE u, N 61 dB 67 dB General
TYPE I 58 dB 64 dB Output lead Power antenna relay
control lead/Power
tuner sedion amplifier control lead
FM Tone controls Bass :8 dB at 100 Hz
' Treble :8 dB at 10 kHz
Tuning range 55-0 ' 74'0 MHZ Power requiremean 12 V DC car battery
. 87.5 - man MHz (negative ground)

Antenna terminal External antenna connector Dimensions Approx. 188 x 58 x 176 mm
Intermediate frequency lOJMHz (w/h/d)
Usable sensitivity 8 dBI' ~ . ~
Selectivity 75 dB 3 400 kHz Mounting dimer-won 233733182 x 53 x 155 mm
Sigmlvto-noise ratio 65 dB (stereo), Mass Approxl 12 kg

68 dB (mono) Supplied accessories Rotary Remole RM~XZS (x)

Harmonic distortion at 1 kHz

0.5 % (stereo), 0.3 °/u (mono)

separation 35 dB at 1 kHz
Frequency response 30 - 15,0) Hz
Capture ratio 2 dB
MW/LW
Tuning range MW: 531 - 1,602 kHz

LW: 153 -- 281 kHz
Antenna terminal External antenna connector
Intermediate frequency 10.71 MHz/450 kHz
Sensitivity MW: 30 pV

LW: 50 pV

Parts for installation and
connections (1 set)
Front panel case (1)

Design and specifications are subject to dung: without

native,

FM/MW/lW CASSETTE CAR 31mm
S O N Y;

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TABLE OF CONTENTS

GENERAL

Location of Controls ................................ 3
Setting the Clock ..........
Cassette Player Operation ..................... . .
............................. 4

Radio Reception. .
Other Functions .................................... 5
Connections ....................................... 7
DISASSEMBLY
Sub Panel Assy .................................. 9
Heat Sink .................................. . i9
Mechanism Deck Block ....... ..i10
Main Board .......................... 10
Key Board ................................ 11

ASSEMBLY OF MECHANISM DECK

Installing the Loading Gears .................... 12
Installing the Reel Bracket ...................... 12
Installing the Mode Lever and Pinch Levers ...... 13
Installing the Cassette Housing ................. 14
Installing the Loading Lever .................... 14
Positioning the Loading Levers .................. 15

Installing the Gear (Loading F) . , .
MECHANICAL ADJUSTMENTS .................. 16

ELECTRICAL ADJUSTMENTS

Deck Section ..................................... 16
Tuner Section .................................... 17
DIAGRAMS
IC Pin Description ..
Printed Wiring BoardsiMain Section- .......... 22
Schematic Diagram .............................. 25
Printed Wiring Board-Panel Section~ .......... 30

EXPLODED VIEWS
Chassis Section ........
Front Panel Section . A
Mechanism Deck Section ........................ 37

ELECTRICAL PARTS LIST ...................... 38

Notes on Chip Component Replacement

' Never reuse a disconnected chip component

- Notice that the minus side of a tantalum capacitor may be
damaged by heat.

Dolby noise reduction manufactured under license from Dolby Labora-
tories Licensing Corporation.
DOLBY" and the doubleD symbol DD are trademarks oi Dolby Labora-
tories Licensing Corporation

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