Technics SAEH 500 Service Manual

Page 1

ORDER NO. AD980204402

ervice Manual

Tuner/Amplifier

* SB-EHGOO

SL-EHSOO

RS-EHGOO

Tuner/Amplifier

SA-EHSOO

* SB-EHSOO

SH-EHSOO

SA-EH500

Colour ,
(H) ........ Gray Type

Because of unique interconnecting cables, when a component
requires service, send or bring in the entire system.

Specifications

Amplifier Section
Power output :
DIN 1 kHz, THD 1%, both channels driven ;
RMS1 kHz, THD 10%, both channels driven ;
Total harmonic distortion :
Rated power at 1 kHz ;
Half power at 1 kHz ;
Load impedance (HIGH/LOW) :
Input sensitivity/impedance:
EXTERNAL, AUX ;
Output level:
EXTERNAL RECOUT ;
$.WOOFER :
. Center frequency ;
LEVEL (VOL -20 dB)

FM Tuner Section
Frequency range ;
Sensitivity ;

SIN 26 dB ;
SIN:
MONO ;
Antenna terminal(s) ;

2x so was 9)
2x 75 was 9)

1 %(6 o)

0.09 %(6 9)

total impedance 6 Q
250 mV/15 kQ

250 mV/1.5 m

70 Hz

MlD +8 dB
MAX +12 dB

87.50 -108.00 MHZ (005 MHZ steps)

1.8 uV (lHF usable)
1.5 (N

70 dB (75 dB, IHF)
75 K2 (unbalanced)

Areas
(E) ........ Europe.
(EB) ...... Great Britain.
(EG) ...... Germany and ltary.
(EP) ...... Russia.
Remote Control
Transmitter System SC-EHSOO
Sound Processor SH-EHSOO
J Tuner/Amplifier SA-El-tsoo
CD Player SL-EHSOO
Cassette Deck RS-EHGOO
Front Speakers" SB-EH600

* : Made in PAES

AM Tuner Section

Frequency range: 522 - 1611 kHz (9 kHz steps)
530 - 1620 kHz (10 kHz steps)
Sensitivity (SIN 20 dB) ; 500 uV/m

Timer Section

Clock : Quartz-lock type
Function : Play timer (1 time), Rec timer (1 time),
Sleep (120 min, 30 min intervals)
Setting : 1 minute - 23 hours 59 minutes
(1 min intervals)

General

Power supply :
For (E), (EG), (EP) areas ;
For (EB) area ;

AC 230V, 50 Hz
AC 230-240 V, 50 Hz

Power consumption : 120 W
Dimensions : 287 (W) x 118.5 (H) x 343.5 (D) mm
Weight : 4.4 kg

Notes: Specifications are subject to change without notice.
Weight and dimensions are approximate.

QWARNING

This service information is designed for experienced repair technicians only and is not designed for use by the general public. It does not
contain warnings or cautions to advise non-technical individuals of potential dangers in attempting to service a product.

Products powered by electricity should be serviced or repaired only by experienced professional technicians. Any attempt to service or
repair the product or products dealt with in this service information by anyone else could result in serious injury or death.

Technicsi

© 1998 Matsushita Electric Industrial Co., Ltd.
All rights reserved. Unauthorized copying
and distribution is a violation of law.

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SA-EI-Isoo
l Contents

Before Repair
Protection Circuitry
Accessories
Caution for AC Main Lea
Location of Controls
installation ..
Connections
Enjoying RDS Broadcast
Setting the Time
Operation Check

Main Component Replacement Procedures.
To Supply Power Source ... ...........................

l Before Repair

To Check Operation .....
About the Seli- Diagnostic Mode
Schematic Diagram ..........

Printed Circuit Board Diagram
Wiring Connection Diagram
Type illustration of lC's, TranSIstors and Diode
Terminal Function of ICs
Block Diagram .......

Replacement Parts List
Cabinet Parts Location .
Packaging .................

(1) Turn off the power supply. Using a 10 Q, 10 W resistor, connect both ends of power supply capacitors (C701, C702, C703 and 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 respect to supply voltage 230 V or 240 V.

Power supply voltage AC 230 V

AC 240 V

Consumed current 50 Hz 70 ~ 250 mA

70 - 250 mA

I Protection Circuitry

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

>e 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 systems 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.

I Accessories

0 AC power supply cord
For (E), (E6), (EP) areas (RJA0019-X) 1 pc.

For (EB) area (RJAOO53 1X).

I Remote control transmitter
1 P°~ (RAK-CH426WH) ................................. 1 pc.

0 Batteries 0 FM indoor antenna 0 AM loop antenna
(UM-4, AAA", R03) ........................... 2 pcs. (RSA0007) ........................................... 1 pp. (RSA0022-J) ............... 1pc.
Note: These are available on sales route. [fiflt
0 Speaker cords O Antenna plug adaptor
(REE0499) ......................................... 2 pcs. For (EB) only (SJP9009) ' ..................... 1 pc.
(REEOBSS) ......................................... 2 pcs.

Page 47

. SA-EHSOO

l Cabinet Parts Location