Technics SA-EX310 Service Manual

ORDER NO. MD9707082C2
Receiver
AV Control Stereo Receiver
Colour
(K) . . . . . . . . Black Type
SA-EX310
© 1997 Matsushita Electronics (S) Pte. Ltd.
All rights reserved. Unauthorized copying and
distribution is a violation of law.
Area
®
Manufactured under license from Dolby Laboratories Licensing Corporation. Additionally licensed
under one or more of the following patents: U.S. numbers 3,632,886,3,746,792 and 3,959,590;
Canadian numbers 1,004,603 and 1,037,877.
"Dolby" and the double-D symbol are trade marks of Dolby Laboratories Licensing Corporation.
*
Colour
Area
Suffix for
Model No.
(E) Europe
(EB) Great Britain
(EG) Germany and Italy
(K)
SPECIFICATIONS\ ÒÅÕÍÈ×ÅÑÊÈÅ ÕÀÐÀÊÒÅÐÈÑÒÈÊÈ
PROTECTION CIRCUITRY\ ÑÈÑÒÅÌÀ ÇÀÙÈÒÛ
CAUTION FOR AC MAIN LEADS\ ÌÅÐÛ ÁÅÇÎÏÀÑÍÎÑÒÈ ÏÐÈ ÐÀÁÎÒÅ ÑÎ ØÍÓÐÎÌ
ÏÈÒÀÍÈß ÏÅÐÅÌÅÍÍÎÃÎ ÒÎÊÀ
OPERATION CHECKS AND MAIN COMPONENT REPLACEMENT
PROCEDURES\ÏÐÎÂÅÐÊÀ ÐÀÁÎÒÎÑÏÎÑÎÁÍÎÑÒÈ È ÇÀÌÅÍÀ ÎÑÍÎÂÍÛÕ
ÊÎÌÏÎÍÅÍÒÎÂ
FAN MOTOR TROUBLESHOOTING\ ÍÅÈÑÏÐÀÂÍÎÑÒÈ ÄÂÈÃÀÒÅËß ÎÕËÀÆÄÅÍÈß
TROUBLESHOOTING\ ÍÅÈÑÏÐÀÂÍÎÑÒÈ È ÌÅÒÎÄÛ ÈÕ ÓÑÒÐÀÍÅÍÈß
BLOCK DIAGRAM\ ÁËÎÊ-ÑÕÅÌÀ
TERMINAL FUNCTIONS OF IC's\ ÔÓÍÊÖÈÎÍÀËÜÍÎÅ ÍÀÇÍÀ×ÅÍÈÅ ÂÛÂÎÄÎÂ
ÈÍÒÅÃÐÀËÜÍÛÕ ÌÈÊÐÎÑÕÅÌ
TERMINAL GUIDE OF IC's, TRANSISTORS & DIODES\ ÖÎÊÎËÅÂÊÀ ÂÛÂÎÄÎÂ
ÈÍÒÅÃÐÀËÜÍÛÕ ÌÈÊÐÎÑÕÅÌ, ÒÐÀÍÇÈÑÒÎÐÎÂ È ÄÈÎÄÎÂ
SCHEMATIC DIAGRAMS\ ÏÐÈÍÖÈÏÈÀËÜÍÛÅ ÑÕÅÌÛ
PRINTED CIRCUIT BOARDS\ ÏÅ×ÀÒÍÛÅ ÏËÀÒÛ
WIRING CONNECTION DIAGRAM\ ÑÕÅÌÀ ÑÎÅÄÈÍÅÍÈß
CABINET PARTS LOCATION\ ÐÀÑÏÎËÎÆÅÍÈÅ ×ÀÑÒÅÉ ÊÎÐÏÓÑÀ
REPLACEMENT PARTS LIST\ ÑÏÈÑÎÊ ÇÀÏÀÑÍÛÕ ×ÀÑÒÅÉ
RESISTORS & CAPACITORS\ ÐÅÇÈÑÒÎÐÛ È ÊÎÍÄÅÍÑÀÒÎÐÛ
PACKAGING\ÓÏÀÊÎÂÊÀ

Technics SA-EX310 Specifications

General

Input Sensitivity	200 mV (line)
Dimensions	430 x 125 x 318 mm
Weight	6.9 kg
Signal-to-Noise Ratio	100 dB
Tuning Range	FM: 87.5 - 108 MHz, AM: 530 - 1600 kHz
Speaker load impedance	4Ω to 16Ω

Summary

Specifications

FM Tuner Section

Amplifier Section

Technical specifications for the amplifier section.

Protection Circuitry

Caution for AC Main Leads

How to replace the fuse

WARNING

Critical warning about connecting wires to the earth terminal.

Operation Checks and Main Component Replacement Procedures

Checking Procedure For Each Major P.C.B.

Steps to check individual printed circuit boards.

1. Checking of the Panel P.C.B., and Tuner P.C.B.

2. Checking of the In/Out Terminal P.C.B.

To Remove Front Panel, Panel P.C.B., Power Switch P.C.B. and Headphone Jack P.C.B.

3. Checking of the MAIN P.C.B.

Main Component Replacement Procedures

1. Replacement of the Power IC and Regulator Transistor

Steps for replacing the power IC and regulator transistor.

CAUTION

Fan Motor Troubleshooting

Troubleshooting

TEST PROCEDURE FOR AMPLIFIER CIRCUIT

Steps for testing the amplifier circuit.

When the CD player AF oscillator is connected:

NORMAL WAVEFORMS OF AMPLIFIER CIRCUIT AND LIKELY FAULTY BLOCKS

CHECKING PROCEDURE FOR SURROUND CIRCUIT

Procedure to check the surround circuit.

OVERLOAD DETECTION FUNCTION

Block Diagram

Schematic Diagram

•Importance safety notice:

Important safety notices regarding component handling.

Caution !

Printed Circuit Board

Wiring Connection Diagram

Replacement Parts List

Notes: * Important safety notice :

Important safety notices related to component replacement.

INTEGRATED CIRCUITS

TRANSISTORS

Replacement Parts List (continued)

DIODES (continued)

VARIABLE RESISTORS

SWITCHES

COILS & TRANSFORMERS

Resistors & Capacitors

Notes: Important safety notice:

Important safety notices regarding component replacement.

RESISTORS

List of resistors with their part numbers and values.

Resistors & Capacitors (continued)

RESISTORS (continued)

Continuation of the resistor list.

CAPACITORS (continued)

CAPACITORS

List of capacitors with their part numbers and values.