Sony exr 14 service manual

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