Sony exr 400 service manual

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EXR-4IIU

SERVICE MANUAL

US Model

Model Name Using Similar Mechanism XR-C3OO

Tape Transport Mechanism Type MG-50EX2-39

SPECIFICATIONS

AUDIO POWER SPECIFICATIONS

POWER OUTPUT AND TOTAL HARMONIC DISTORTION
12 watts per channel minimum continuous average power into
4 ohms, 4 channels driven from 20 Hz to 20 kHz with no more than

1% total harmonic distortion.

other Specifications
Cassette player section

Tape track 4-hack Z-channel stereo
Wow and flutter 008 °/a (W RMS)
Frequency response 30 - 18,000 Hz
Signal-tomoise ratio 58 dB

Tuner section

FM
Tuning range 87.5 - 107.9 MHz
Antenna terminal External antenna connector
Intermediate frequency 107 MHz
Usable sensitivity 8 dBf
Selectivity 75 dB at 400 kHz
Signal-to-noise ratio 65 dB (stereo),

68 dB (mono)
Harmonic distort-ion at 1 kHz

0.5 % (stereo),

03 % (mono)
Separation 35 dB at 1 kHz
Frequency response 30 - 15,000 Hz
Capture ratio 2 dB

AM

Tuning range 530 - 1,710 kHz

Antenna terminal External antenna connector
Intermediate frequency 10.71 MHz/450 kHz
Sensitivity 30 11V

Power amplifier section

Out-puts Speaker outputs
(sure seal connectors)
Speaker impedance 4 ~ 8 ohms

Maximum power output 20 w x 4 (at 4 ohms)

-Continued on next page-

FM/AM CASSETTE CAR STEREI]
S O N Y;

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TABLE OF CONTENTS

General
Ou uts Line out (I)
.1) Power antenna relay 1' GEN ERAL
C°"°' lead, , Location of controls ....................
Power amplifier control
lead Getting Started ........................
Tone controls Bass :8 dB at 100 Hz
Treble :8 dB at 10 kHz Cassette Player ................................... 4
Power re uirements 12 V DC car battery .
q (negative gmund) Radio .............................................. 5
Dim ' A . 188 X 58 X 177 mm -
5w (7135:sz ,/l X 7 in.) Other Functions .................................... 5
(w/h/d) CD Changer ....................................... 5
Mounting dimension Approx. 182 x 53 x 155 mm .
(7 V. x 2 V. x 6 '/- in.) Additional Information ............................ 6
(w/ h/ d) .
Mass Approx. 1.2 kg (2 lb. 1002.) Connections ........................................ 8
Supplied accessories Parts for installation and
connections (1 set)
Front panel case (1) 2_ DISASSEM BLY
21 Sub Panel Assy ................................ 10
Design and specifications are sub/kc! (0 change without 22 Heat Sink 10
"on. . ......................................
2-3. Mechanism Deck Block . . ..................... 11
2-4. Main Board lllllllllllllllllllll 11
3. ASSEMBLY OF MECHANISM DECK
3-1. Installing the Loading Gears .................... 12
32. Installing the Reel Bracket ...................... 12
3-3. Installing the Mode Lever and Pinch Levers ...... 13
3-4. Installing the Cassette Housing .................. 14
3-5. Installing the Loading Lever .................... 14
3-6. Positioning the Loading Levers . . .15
3-7. Installing the Gear (Loading F) .................. 15
4. MECHANICAL ADJUSTMENTS iiiiiiiiiiiiiiiiii 16
5. ELECTRICAL ADJUSTMENTS
Deck Section ...................................... 16
Tuner Section ................... _ ................. 17
6. DIAGRAMS
6-1. IC Pin Description .............................. 20
6-2. Printed Wiring Boards-Main Section- .......... 23
6-3. Schematic DiagramiMain Sectioni ............ 25
6-4. Printed Wiring Board-Panel Sectionv .......... 29
6-5. Schematic Diagram-Panel Section- ............ 31
7. EXPLODED VIEWS
7-1. Chassis Section .................................. 35
7-2. Front Panel Section ............................ 36
7-3. Mechanism Deck Section ........................ 37
8. 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.