Sony exr 14 service manual

Page 1

EXR-14
XR-2600/ 2900

SERVICE MANUAL

U8 Model

EXR- 14

U8 Model

Canadian Model

SPECIFICATIONS

AUDIO POWER SPECIFICATIONS

POWER OUTPUT AND TOTAL HARMONIC DISTORTION

10 watts per channel minimum continuous average power into 4
ohms, both channels driven, from 30 to 20,000 Hz with no more
than 1.0% total harmonic distortion.

Tuner section

Tuntng range
Antenna terminal

Usable sensluvity

Selectivity

SignaHo-nolse ratio
Harmonic distortion SI 1 kHz
Separation

Frequency response
Capture ratio

AM
Tuning range
Antenna termrnal
Sensltlvlly

Cassette player section
Tape track

Frequency response
$ignal-lo~notse ram

Wow and Ilutler

87.5 - 1073 MHZ

External antenna connector/Power antenna relay control Iead

13 dBI (75 ohms)
more than 70 63 91400 kHz

65 as (stereo). es as (monaural)
0.9% (stereo). 0.5% (monaural)

35 dB at 1 kHz
so - 15,000 Hz (:3 (13)
2.0 as

530 - 1.710 kHz

External antenna connector/Power antenna relay control lead

31qu

4-week 2-onannei stereo

XH-2600/2900
v22wx
Photo: XFl-2900 model
Model EXR-14, XR-2600 XR-2900
Model Name Using Similar Mechanism EXR-12, XFl-6077 New
Tape Transport Mechanism Type MG-aeSHJ-sz MG-36ASH -32

Power amplifier section

Outputs

Speaker impedance
Maximum power output

General
Tone controls

Loudness

Power requirements
Mounting dimensions

Mass

Accessones supplied

Speaker outputs (sure seal connectors)
32 - 8 ohms

22 W x 2 (at 4 ohms)

e W X 4 (314 ohms)

Bass :8 dB at 100 Hz

Treble :6 dB at 10 kHz

«.10 dBal 100 Hz

12 v DC car battery (negaIlVe ground)

Approx, 173 x so , r34 mm (win/o)
(7w x 2 , sale in)

Approx, L2 kg 12 ID. 10 oz.)

Mounting hardware (1 set)

Power connecting cord (1)

Design and SDBCIIICEHOHS subject to change Without notice

40 ~ 15.000 Hz

Cassette type Dolby B' Dolby 0"

TYPE 1|. IV as d3 55 GB

TYPE l 63 dB 55 dB

' XR-ZQOO only Corporation,
may.

. Dolby nouse reduction manulaclured under license
lrom Dolby Laboratories Licensmg Corporation
DOLBY and the double-D symbol DD are
trademarks oi Dolby Laboratories Licensmg

FM/AM CASSETTE CAR STEREO
SONE

Page 2

Features

Tuner section

- SSlR (Sony Super Interference Rejection) PLL
Synthesizer tuner.

-The quartz-locked digital synthesizer system
enables easy and accurate tuning.

0 Up to 12, FM and 6 AM stations can be preset.

~Automatic memory function allows you to store
a total of 18 stations in the memory quickly
and easily.

. Dolby B NR system* reduces tape hiss noises
during tape playback.

- AMS (Automatic Music Sensorl function for
automatically locating the beginning 01 a track
during tape playback.

. xii-2900 only.

Cassette player section

The autOcreverse function changes the tape
direction automatically

Power amplifier section

~ Fader control for playback with a 4-speaker
system.

0 Maximum power output of 6 watts over 4
channels or 22 watts over 2 channels.

General
The quartz controlled digital clock.

SERVICING NOTE

Notes on chip component replacement

0 Never reuse a disconnected chip component.
0 Notice that the minus side of a tantalum capacitor
may be damaged by heat.

TABLE OF CONTENTS

Section Title Page
Specifications 1
Features ................ .

Servicing Note ....................................... . . . 2
1 . GENERAL

Location and Function of Controls --------------------- 3
Instauation............ ................. .......... ....... 4
Connections ............... ........... ................... 5
2, DISASSEMBLY ................... . . . ................ 6

3. ADJUSTMENTS

3-1. Mechanical Adjustment ..... . . . . . . . . . . . . . ........ 7

3-2. Electrical Adjustments .......... . . . . . . . .......... 7
4. DIAGRAMS

4-1. Block Diagram . - . . . . . . ...........

4-2. Semiconductor Lead Layouts ~ ~ ------ 14
43. Printed Wiring Boards
(EXR-l4/XR-2600 model) ...... . . ............. 15

44. Schematic Diagram

(EXR-14/XR-2600 model) ...... . 19
4-5. Schematic Diagram (XR»2900 model) - 23
4-6. Printed Wiring Boards (KR-2900 model) ~~~~~~~ 27
5. EXPLODED VIEWS
51. Chassis Assembly~ 1 ............................. 31
5-2. Chassis Assembly-2 . . . . . . . .................. . . . . 32
543. MD Assembly~1 .................. 33
54, MD ASSemblyQ . ............. . . . . . . ...... 34
6. ELECTRICAL PARTS LIST ~~~~~~~~~~~~~~~~~~~~~~ 35
Hardware List ...................... .41