Technics SECA 01 Service Manual

Page 1

ORDER NO. A0960307402

ervice Manual

. . Amplifier
Amplifier
SB-CA01A 'SB-CAOlA S E- :A0 1
Colour
(N)...Go|d Type
Areas
5:33:13; Area Colour
(E) Europe.
(EB) Great Britain. (N)
(EG) Germany and itaiy.
Rs-CA01 sec/am Remote control
transmitter System: SC-CAOI
Because of unique interconnecting cables, when a component
requires service, send or bring in the entire system.
ISPECIFICATIONS
I Amplifier section IGeneraI
Power output Power consumption 100 W
DlN 1 kHz, THD 1%, both channel driven 2X45 W (69) Power supply ,
RMS 1 kHz, THD 10%, both channel driven 2X60 W (69) [For (E, EG) areas] 230 V, AC 50 Hz
Total harmonic distortion [For (EB) area] 230 - 240 V, AC 50 Hz
Rated power at 1 kHz 1% (6(2) Dimensions (WXHXD) 186x103><255 mm
Hall power at 1 kHz 0.09% (60) Weight 3.9 kg
Load impedance 60
Notes:
1. Specifications are subject to change without notice.
2. Weight and dimensions are approximate.
3. Total harmonic distortion is measured by the digital
spectrum analyzer.
System Tuner CD Player Amplifier Cassette deck Speakers
SC-CAO1 STvCA01 SL~CA01 SE-CA01 RS-CAOi *SB'CAWA
*Made in PAES
A WARNING
This service information isgesigned 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~iechnical 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.

Technic§

© 1996 Matsushita Electric industrial Co., Ltd.
All rights reserved. Unauthorized copying and
distribution is a violation of law.

Page 2

SE-CA01

I CONTENTS

ACCESSORIES . .......... .........
BEFORE REPAIR AND ADJUSTMENT .
PROTECTION CIRCUITRY
CAUTION FOR AC MAIN LEA
LOCATION OF CONTROLS .
INSTALLATION .............
SYSTEM EQUIPMENT CONNECTIONS.
OPTIONAL ANTENNA CONNECTIONS

EXTERNAL UNIT CONNECTIONS ........

OPERATION CHECK AND MAIN COMPONENT
REPLACEMENT PROCEDU RES..... .........

IACCESSORIES

0 AC power supply cord
For (E, EG) areas: (HJAOO19»2K)
For (EB) area: (VJAO733J

1 pc.

V»,
(RJA0049-K)

0 Remote control transmitter.t............,.u.
(RAK-CH193WH)

(RJA001 9-2 K)

1 pc.

0 Batleries
(UM<4, AAA", R03)
Note: These are available on sales route.

@

2 pcs.

POWER SOURCE ONIOFF OF THIS UNIT ..
REPLACEMENT OF THE FOOT.
WIRING CONNECTION DIAGRAM
BLOCK DIAGRAM

PRINTED CIRCUIT BOARD DIAGRAM.
SCHEMATIC DIAGRAM

, RESISTORS AND CAPACITOR 23, 24
CABINET PARTS LOCATION 25
REPLACEMENT PARTS LIST . 24, 26~28
PACKAGING 28
................... .. 8, 9
O Flalcable.. OScre'w 1 pc,
Long (REX (XTN3+12AFZ)
Short (REXOBOB)
@ W
(REXDB12) (REX0813) (REXOSOS)
0 AM loop antenna 1 pc. 0 Anlenna holder ..................................... 1 pc.
(RSA0012) (FIMN0244)
0 FM indoor antenna.I.....N.I.............I.I..N 1 po. 0 Speaker cords t.
(RSA0007) (RFA0737-FI)
OAflachmentplug .I 1 pc.

For (EB) area only SJPQDDQ)

@b

IBEFORE REPAIR AND ADJUSTMENT

(1) Turn oil the power supply using a 109, 10 W resistor, connect both ends of power supply capacitors (C715~718) 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 50/60 Hz in NO SIGNAL mode should be shown below with respect to supply voltage 230 W240 VI

Area (E) (EG) (EB)
Power supply voltage AC 230 V AC 240 V
50 HZ 60~180 mA 50 Hz 55~175 mA
Consumed current 50/60 Hz
60 Hz 48~144 mA 60 Hz 44~14o mA

Page 3

.PFlOTECTION CIRCUITRY

SE-CAO1

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 function of this circuitry is prevent circuitry damage if, for example, the posit'we and negative speaker connection wires are shorted", or it
speaker systems with an impedance less than the indicated rated impedance of Hits 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 circuitw functions, the unit will not operate unless the power is first switched OFF and then ON again.

ICAUTION FOR AC MAlN LEAD
[For (EB) area only.]

For your safety, please read the following text carefully.

This applicance is supplied with a moulded three pin mains plug
for your safety and convenience.

Ad 5-ampere fuse is fitted in this plug.

Should the fuse need to be replace please ensure that the
replacement fuse has a rating of 5-ampere and that it is
approved by ASTA or BSI to 381362.

Check for the ASTAd mark or the BSI mark
of the fuse.

on the body

If the plug contains a removable fuse cover you must ensure
that it is refitted when the fuse is replaced.

If you lose the fuse cover the plug must not be used until a
replacement cover is obtained.

A replacement fuse cover can be purchased from your local
dealer,

CAUTION!

IF THE FITTED MOULDED PLUG IS UNSUITABLED FOR
THE SOCKET OUTLET IN YOUR HOME THEN THE
FUSE SHOULD BE REMOVED AND THE PLUG CUT OFF
AND DISPOSED OF SAFETY.

THERE IS A DANGER OF SEVERE ELECTRICAL
SHOCK IF THE CUT OFF PLUG IS INSERTED INTO ANY
13-AMPERE SOCKET.

It a new plug is to be fitted please observe the wiring code as
shown below.
It in any doubt please consult a qualified electrician.

IMPORTANT
The wire in this mains lead are coloured in accordance with the
following code:

Blue: Neutral

Brown: Live
As the colours of the wires in the mains lead of this appliance
may not correspond with the coloured markings identifying the
terminals in your plug, proceed as follows:
The wire which is coloured BLUE must be connected to the
terminal in the plug which is marked with the letter N or
coloured BLACK.

This apparatus was produced to BS 800.

The wire which is coloured BROWN must be connected to the
terminal in the plug which is marked with the letter L or coloured
FlED.

Under no circumstances should either of these wires be
connected to the earth terminal of the three pin plug, marked
with the letter E or the Earth Symbol

Before use
Removal the connector cover as follows.

How to replace the fuse
1. Remove the fuse cover with a screwdriver

(5 ampere)

Page 7

- A

FM outdoor antenna (not included)

Cassette deck

75 (2 coaxial cable (not included)

FM outdoor antenna (not included)

The outdoor antenna should be used when using this unit in moun-
tainous areas or in spaces enclosed by reinforced concrete where
the FM indoor antenna (included) does not provide satisfactory
reception.

An outdoor antenna should be installed by a qualified technician
only.

AM outdoor antenna (not included)

The outdoor antenna should be used when using this unit in moun-
tainous areas or in spaces enclosed by reinforced concrete where
the AM loop antenna (included) does not provide satisfactory recep~
tiont

Use 5-12 m of vinyl-sheathed wire horizontally at the window, or a
convenient location

When the unit is not in use. disconnect the outdoor antenna to pre-
vent possible damage from lightning. Never use an outdoor antenna
during an electrical storm.

SE-CAO1

IOPTIONAL ANTENNA CONNECTIONS AND EXTERNAL UNIT CONNECTIONS

AM outdoor antenna (not Included)

_ l- 5-12m -i
Vinyl-sheathed wire

Be sure to connect the AM loop antenna even when an outdoor
antenna is used.

Connecting a cassette deck E

0 Make sure that the power supply for all components has been
turned off before making any connections

0 For details, refer to the operating instructions of the cassette deck
which is to be connected.

- All peripheral components and cables sold separately.

Stereo connection cable (not included)

White (L) H

Red (R)

Cassette deck

PL/MOUT)

7L9