Sony ST 5140 Service Manual

Page 2

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SECTION 2.
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2-10.
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SECTION 3.
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SECTION 4.

SECTION 5.
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SECTION 6.

SECTION 7.

.7

TABLE OF OONTENTS

Title Page

TECHNICAL DESCRIPTION
Technical Specifications ..
Circuit Analysis Digest
Block Diagram ................................................................................

DISASSEMBLY AND REPLACEMENT PROCEDURES
Tools Required
Hardware Identification Guide
Top Cover and Bottom Plate Removal
Front Panel Removal
Dial Cord Restringing
Pilot Lamp Replacement ..... 9
Meter Replacement .. ..... 9
Dial Glass Replacement
Dial Scale Replacement
Switch and Control Replacement
Rear Panel Removal .....................
Replacement of Components Secured to the

Rear Panel by Rivets ....................................................................... 10
Chassis Layout ................................................................................ 11

ALIGNMENT AND ADJUSTMENT PROCEDURES
Fm I-f Strip Alignment
Fm Discriminator Alignment
Muting Adjustment ........
Fm Front-end Alignment

Fm Stereo Separation Adjustment
A-m l-f Strip Alignment
A-m Frequency Coverage and Tracking Alignment 17~18

l
REPACKING ...............................................

DIAGRAMS

Mounting Diagram e Fm Front End 7
Mounting Diagram - Fm I-f Amplifier Board -
Mounting Diagram 7 MPX Decoder Board -

21
22

Mounting Diagram - A~m Convt/I-f Amplifier Board - 23
Mounting Diagram - Power Supply Board - - 24
Schematic Diagram ................................................................... 25~25
EXPLODED VIEW 27~29
ELECTRICAL PARTS LIST .................................................... 30~35