Technics SECA 10 Service Manual

Page 1

, Service Manual

ORDER NO. AD951227208

Amplifier

Amplifier
*SB-CA10 "SB-P610 "SB-CAN Remote control S E-t : A 1 O
I I transmitter

SL-CA1 0 ST-GA10

Colour
(K) ...B|ack Type

SB-P310 ' f "SB-P510
' Area

Suffix for
Model No.

Area Colour

(E) Europe.
(EB) Great Britain.

RS-CA10 SE-CA1O

(EG) Germany and Italy.

. . . (K)
Because of unique interconnecting cables, when a component As, Latin Amen!
[ requires service, send or bring in the entire system. 60) was: Near eas" and
(GN) Oceania.
.SPECIFICATIONS System: SC-CA10
I Amplifier section SURROUND 4Q - 80
Power output S [SENIER 89
DIN 1 kHz, THD 1%, both channel driven 2x50 w (an) Mgr; we 90 dB
RMS 1 kHz, THD 10%, both channel driven ,
[For (E, EB, EG, GN) areas] 2X70 W (6Q)
[For (GO) area] 2X65W (so) I Genre"
PRO LOGIC mode Power consumption 235 W
DIN 1 kHz, THD 1% Power supply
MAIN (both channels driven) 2X40 W (SQ) [F07 (E! 55) areas] 230 V. AC 50/60 HZ
SURROUND 40 W (40 +49) [For (EB, GN) areas] 230 - 240 V, AC 50/60 HZ
CENTER 40 w (89) [For (GO) area] 1 10/127/220/230 - 240 v, AC 50/60 Hz
RMS 1 kHz, THD 10% Dimensions (WXHXD) 270x118.5><341.5 mm
MAIN (both channels driven) 2X50 W (6(2) Weight 5.2 kg
SURROUND 50 W (49 +49)
CENTER 5o w (39) Note:
Total harmonic distortion Specifications are subject to change without notice.
Rated power 3 1 kHz 1% (69) Weight and dimensions are approximate.
Ha" power at 1 kHz 009% (69) Total harmonic distortion is measured by the digital spectrum
Load impedance analyzer.
MAIN 69 - 89
System Tuner CD changer Amplifier Cassette deck Speakers
* SB-CAIO
SC-CA10 ST-CAI 0 SL-CAi 0 SE-CA10 RSCAI 0 *2 SB'PTI 0
(SB-P01 0+SE-PSI 0)
*1 Made in PAES
*2 For (E. EB, EG) areasi...Made in PAES
For (GO, GN) areas....Made in NABEL
A WARNING

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.

© 1995 Matsushita Electric Industrial 00., Ltd.

0 ®
I eCI I I Ilcs All rights reserved. Unauthorized copying and
distribution is a violation of law.

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SE-cm,

I CONTENTS

ACCESSORIES ...................................
BEFORE REPAIR AND ADJUSTMENT .
PROTECTION CIRCUITRY
CAUTION FOR AC MAIN LEAD
LOCATION OF CONTROLS .
INSTALLATION
CONNECTIONS...

USING THE DOLBY PRO LOGIC SURROUND

ADJUSTING SPEAKER OUTPUT LEVE
ADJUSTING THE DELAY TIME...
ENJOYING WITH SURROUND OR

OPERATION CHECK AND MAIN COMPONENT
REPLACEMENT PROCEDURES ..................

.ACCESSORIES

0 AC power supply card
For (E, EG, 60) areas: (RJA0019-2K) ...... 1
For (EB) area: (RJA0049-K)
For (GN) area: (FIJAOO36

(FiJAOD19-2K) (RJA0049-K)

' Remote control transmitter
For (E. EG) areas: (RAK-CH744WH) ......... 1
For (EB, 60, GN) areas

0 Batteries
(UM-4, AAA, R03) .................................... 2
Note: These are available on sales route.

9

I FM indoor antenna
For (E, EB, EG) areas: (RSA0007
For (GC, GN) areas: (RSAOODB) ..

@Sesfi

(RSAOOD7) (RSAOOUS)

OAttachmerlt plug
For (EB) area only: (SJP9009)..

IBEFORE REPAIR AND ADJUSTMENT

(1) Turn off the power supply using a 100, 10 W resistor, ocnnect both ends of power supply capacitors (C701. 0702) in order to discharge the

voltage.

REPLACEMENT OF THE FOOT ............
POWER SOURCE ONIOFF OF THIS UNIT

MEASUREMENTS AND ADJUSTMENTS . 16
SCHEMATIC DIAGRAM .................. 17~21
PRINTED CIRCUIT BOARD DIAGRAM. 22~25
WIRING CONNECTION DIAGRAM. . 25
BLOCK DIAGRAM ............... 26, 27
CABINET PARTS LOCATION ..... 28
REPLACEMENT PARTS LIST
RESISTORS AND CAPACITORS 31, 32
PACKAGING ............................
................. 13~ 15
0 Flat cable I Mounting screw

Long (REX0661) . 1 (STN3+12AFZ)

Middle (REX0660) 1

Short (FIEXOSOB) V

V m @ IAntenna holder

(REX0661) (REXOGSO) (REXOGOS) (WW) -------------
0 AM (LW/MW) loop antenna m
(RSA0012)
0 Speaker cords
(REE0393) ..................................

0 Power plug adapter
For (60) area only: (SJ P521 3-1) ............... 1

(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 VI240 Wt 10 V.

Area (E) (EG) (EB) (GN) (GC)
Power supply voltage AC 230 V AC 240 V AC 110 V AC 240 V
50 H2 80~230 mA 50 Hz 80~230 mA 50 Hz 200~500 mA 100N250 mA
Consumed current 50/60 Hz .
60 Hz 64~184 mA 60 Hz 64~184 mA 60 Hz 160~400 mA 80~200 mA

Page 11

IADJUSTING SPEAKER OUTPUT LEVEL

In order to reproduce the movement of the sound and its clear
orientation, it is important to adjust the output level of each speakerr
Adjust output to the correct levels while listening to the test signaL
Before starting. check your front speakers are correctly balanced.

1 Press MODE to select SURROUND or 3 STEREO".

2 Press TEST to output a test signal.
The test signal is emitted in the tollowingorder:

SE-cA1o

Turn VOLUME to set the volume level normally used
for enjoying the source.

Press CENTER (-) or (+) or SURROUND (-) or (+)
on the remote control to adjust the output level bal-
ance.

Adjust the output level of each speaker from the listening posi-
tion until they are all identical.

For SURROUND mode Output levels can be varied within a range of 1-12 dB with front
Front speaker (left)-»Center speaker speaker output level serving as the zero point.
i
SurTround speakers (left, right)<-Front speaker (right)
IThe test signal is output only by the speaker you are now adjusting
. and does not repeat the sequence until adjustments are complete.
The test signal is not emitted from the center speaker when the OHemember you cannot adjust OUPU level 0 the surround speakers
center mode is on PHANTOM. if you selected the 3 STEREO mode in step 1.
For 3 STEREO mode
Front speaker (left)->Center speaker
T To stop the test signal:
Front speaker (right) Press TESTV

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