Technics SA-EH560 User manual

Table Of Contents 
COVER 
1 Before Repairs 
2 Protection Circuitry 
3 Accessories 
4 Caution for AC Main 
Leads 
5 Location of Controls 
6 Operation Checks and 
Component 
ReplacementProcedures 
6.1 Checking for the AC IN 
P.C.B. 
6.2 Checking for the 
operation P.C.B. 
6.3 Checking for the main P.
C.B. 
6.4 Replacement for the 
regulator transistor 
6.5 Replacement for the 
power IC 
7 To Supply Power Source 
8 Self-Diagnostic Mode 
8.1 To display the 
malfunction code 
8.2 To return to the normal 
display 
8.3 Display contents 
8.3.1 U70 CD, U70 DECK
(displayed automatically) 
8.3.2 F61 
9 Schematic Diagram Notes 
10 Schematic Diagram 
11 Printed Circuit Board 
Diagram 
12 Type Illustration of ICs, 
Transistors and Diodes 
13 Wiring Connection 
Diagram 
14 Terminal Function of ICs 
14.1 IC901 
(LC8A524A5N28):System 
Control&sol;FL Drive 
15 Block Diagram 
16 Replacement Parts List 
17 Cabinet Parts Location 
18 Packaging 
Service Manual
TOP NEXT 
AD0002043C2
Tuner/Amplifier
SA-EH560
Colour
(S).....................Silver Type
Areas
(E).....................Europe.
(EB)..................Great Britain.
(EG)..................Germany, Italy, France, Netherlands and Denmark.

Table Of Contents

COVER

1 Before Repairs

2 Protection Circuitry

3 Accessories

4 Caution for AC Main Leads

5 Location of Controls

6 Operation Checks and Component ReplacementProcedures

6.1 Checking for the AC IN P.C.B.

6.2 Checking for the operation P.C.B.

6.3 Checking for the main P.C.B.

6.4 Replacement for the regulator transistor

6.5 Replacement for the power IC

7 To Supply Power Source

8 Self-Diagnostic Mode

8.1 To display the malfunction code

8.2 To return to the normal display

8.3 Display contents

8.3.1 U70 CD, U70 DECK(displayed automatically)

8.3.2 F61

9 Schematic Diagram Notes

10 Schematic Diagram

11 Printed Circuit Board Diagram

12 Type Illustration of ICs, Transistors and Diodes

13 Wiring Connection Diagram

14 Terminal Function of ICs

14.1 IC901 (LC8A524A5N28):System Control/FL Drive

15 Block Diagram

16 Replacement Parts List

17 Cabinet Parts Location

18 Packaging

Service Manual

TOP NEXT

AD0002043C2

Tuner/Amplifier

SA-EH560

Colour

(S).....................Silver Type

Areas

(E).....................Europe.

(EB)..................Great Britain.

(EG)..................Germany, Italy, France, Netherlands and Denmark.

1 Before Repairs

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1. Turn off the power supply. Using a 10Ω, 10 W resistor, connect both ends of power supply

capacitors (C701, C703 and C702, C704) in order to discharge the voltage.

2. Before turning the power supply on, after completion of repair, slowly apply the primary

voltage by using a power supply voltage controller to make sure that the consumed current at

50 Hz in NO SIGNAL mode should be shown below with respectto supply voltage 230/240 V.

Power supply voltage AC 230 V AC 240 V

Consumed current 50 Hz 70 ~ 250 mA

•@

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2 Protection Circuitry

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The protection circuitry may have operated if either of the following conditions is noticed:

No sound is heard when the power is switched ON.

Sound stops during a performance.

The functions of this circuitry is to prevent circuitry damage if, for example, the positive and negative

speaker connection wires are shorted, or if speaker system with an impedance less than the indicated

rated impedance of this unit are used.

If this occurs, follow the procedure outlined below.

1. Switch OFF the power.

2. Determine the cause of the problem and correct it.

3. Switch ON the power once again.

Note:

When the protection circuitry functions, the unit will not operate unless the power is first switched

OFF and then ON again.

•@

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3 Accessories

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AC power supply cord for (E),(EG) areas/(RJA0019-X)...........................1 pc.

AC power supply cord for (EB) area/(RJA0053-2X).........................1 pc.

AM loop antenna set/(RSA0022-J)...........................1 pc.

FM indoor antenna/(RSA0007)..............................1 pc.

Speaker cords/(REE0499)..............................2 pcs./(REE0984)..............................2 pcs./

(REE0985)..............................2 pcs.

Remote control transmitter/(RAK-EHA29WH).....................1 pc.

Remote control batteries/(R6/LR6,“AA”, UM-3)............2 pcs.

Note: These are available on sales route.

Antenna plug adaptor for (EB) area only/(SJP9009)..............................1 pc.

•@

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Table of contents

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