Technics SAEX 100 Service Manual

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ORDER NO. MD9607048C2

Service Manual

AV Control Stereo Receiver Fteceiver
S A - E X 1 O 0
Colour
(K) . . . . . Black Type
Area
Suffix for
Model No. Area C°|°'
(E) Continential Europe
(EB) Great Britain ( K )
(EG) Germany and Italy
I Specifications
I Amplifier Section I FM Tuner Section
Power output (at 240V) Frequency range 87.50-108.00MH2
DIN 1 kHz (T.H.D. 1%) 2 x wow (49) Sensitivity
40H: - 20kHz continuous power output SIN 30dB 1.5uV I 759
both channels driven 2 x 80W (89) SIN ZGdB 1.3uV/ 75!:
Total harmonic distortion SIN 20dB 1 .2pV/ 750
Rate power at 40Hz - 20kHz 0.5% (an) Usable sensitivity 1 .5uV / 759 (IHF '58)
Half power at 1 kHz 0.03% (89) 46dB stereo quietlng sensitivity 22pV/ 759
Load impedance 4 - 169 Total harmonic distortion
Intermodulation distortion MONO 0.2%
rated power at 60Hz:7kHz 4:1, SMPTE 0.5% (89) STEREO 0.3%
Power bandwidth SIN
both channels driven, ~3dB 10Hz - 40kHz (8(1) MONO 60dB (75dB, IHF)
Dampingfactor 40 (SQ) STEREO 58dB (71 dB, IHF)
Frequency response Frequency response 20Hz - 15 kHz (+1 dB, -2dB)
PHONO RIAA standard curve Alternate channel selectivity 65dB (:400kHz)
(30Hz - 15kHz) 10.8dB Capture ratio 1dB
CD, VCR, TAPE 10Hz - 40kHz, :3dB Image relection at 98MHz 40dB
Input sensitivity and impedance IF reiection at 98MHz 70dB
PHONO 3mV / 47m Spurious response rejection at 93MHz 70dB
co, vca, TAPE 200mV/22ko AM suppresslon 50dB
SIN at rated power (8!!) Stereo separation (1 kHz) 40dB
PHONO 70dB (IHF,A: BOdB) Carrier leak
CD. VCR, TAPE 75dB (IHF,A: SBdB) 19kHz -30dB (~35dB, IHF)
Tone control 3BkHz -50dB (-55dB, IHF)
BASS 50Hz, +1010 -10dB Channel balance (250Hz - 6.3kHz) 11.5dB
TREBLE 20kHz, +1 0 to -10dB Limiting point 12pr
Output voltage Bandwidth
VCR1 OUT, TAPE REC (OUT) 200mV IF amplifier 180kHZ
Channel balance (250Hz - 6.3kHz) 11 dB FM demodulator 1000kHz
Channel separation 55dB Antenna tenninal(s) 7532 (unbalanced)
Headphones output level and impedance 430mV I 3309

AK 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
wamingsorcautions to advise non-technical individuals of potential dangers in attemptingto servicea product. Products powered byelectricityshould
be serviced or repaired only by experienced professional technicians. Any attempt to service or repairthe product orproducts dealt with in this service
information by anyone else could result in serious injury or death.

© 1996 Matsushita Electronics (S) Pte. Ltd.

. ® All rights reserved. Unauthorized copying and
ec nlcs distribution is a violation of law.

Contents

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SA-EX100

I AM Tuner Section
Frequency range
AM (use) / MW (...E,EB) 522 - 161 1 kHz (9kHz steps)

530 - 1620kHz (10kHz steps)

LW (5,53) 144-288kHz
Sensitivty

AM (...EG) / MW (...E,EB) ZOpV, 330uV/m

LW (5.53) 45W
Selectivity

AM (...EG) / Mw (...E,EB) (at 999kHz) 55dB

LW (5,53) (at 252kHz) 55dB
Image relection

AM (...EG) / MW (...E,EB) (at 999kHz) 40dB

LW (5.53) (at 252kHz) 40dB
IF rejection

AM (...EG) / MW (...E.EB) (at 999kHz) 55:13

LW (5,53) (at 252kHz) 55dB
I Contents Page
BEFORE REPAIR AND ADJUSTMENT. 2
PROTECTION CIRCUITRY 2
ACCESSORIES .. 2
OPERATION CHE 3 ~ 6
CAUTION FOR AC MAINS LEAD 7
TROUBLESHOOTING ............ 8 ~ 9
TERMINAL FUNCTION OFICs . 10
TERMINAL GUIDE OF ICs TRANSISTORS AND DIODES ...... 10

lBefore Repair and Adjustment

I General

Power consumption 190W (standby condition : 3W)

Power supply

for E,EB AC 230 - 240V, 50Hz
for E6 AC 230V, 50Hz

Dimensions (W x H x D) 430 x136 x 309mm

Weight 7.0kg

Notes :

1. Specifications are subject to change without notice.
Weight and dimensions are approximate.
2. Total harmonicdistonion is measured by the digital spectrum analyzer.

SCHEMATIC DIAGRAM
BLOCK DIAGRAM ........
WIRING CONNECTION DIAGRAM
PRINTED CIRCUIT BOARD

CABINET PARTS LOCATION 30
REPLACEMENT PARTS LIST 31 ~ 32
RESISTORS & CAPACITORS 33 ~ 35
PACKAGING . 36

Disconnect AC power, discharge four Power Supply Capacitors (C703 to C706) through a 109 , 5W resistor to ground.
DO NOT SHORT-CIRCUIT DIRECTLY (with a screwdriver blade, for instance), as this may destroy solid state devices.
After repairs are completed, restore power gradually using a variac, to avoid overcurrent.

For E, EB : Current consumption at 230V - 240V, 50Hz in NO SIGNAL mode should be between 120mA to 350mA.
For EG : Current consumption at 230V, 50Hz in NO SIGNAL mode should be between 130mA to 380mA.

I Protection Circuitry

The protection circuitry may have operated if either ofthe following
conditions are noticed:

- No sound is heard when the power is turned on.

- Sound stops during a performance.
The function 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 the amplifier are used.

I Accessories

If this occurs, follow the procedure outlines below:
1. Turn off the power,
2. Determine the cause of the problem and correct it.
3. Turn on the power once again after one minute.

Note:
When the protection circuitry functions, the unit will not operate unless
the power is first turned off and then on again.

Remote control unit
(EUR642175) ........ 1 pc

AC power supply cord
(RJA0019-2K .. E,EG) 1 pc

AM loop antenna set
(RSA0010) 1 set

FM indoorantenna
(RSA0007) ....... 1 pc

Attachmentplug
(SJP9009 ., EB) 1 pc

AC power supply cord
(VJA0733 .. EB) 1 pc