Technics SUC 800 U Service Manual

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ORDER NO. A0950616608

Service Manual

Control Amplifier

System: SU-ASOOD
SU CBODU

SE-A9OOS

System: SU-ABOOD
S U-CEOOU

SE-ASOOS

Remote Control
Transm ltter

Remote Control
Transmitter

Amplifier
Colour
(K) : Black
Areas
Suffix for Area Colour
Model No.

Europe, Asia. Latin
(E) America, Micldle East, (K)
Africa and Oceania

System: SU-ASCIOD

Because of unique interconnecting cables, when a component]

requires service, send or bring in the entire system.

Specifications (DIN 45 500)

Total harmonic distortion Vol. Max 20 Hz -20 kHz 0.01 %
Input sensitibity/impedance
PHONO 2.5 mV/47 k9
TUNER, CD, AUX, TAPE 1, TAPE 2/000 200 mV/27 k9
Phone maximun input voltage (1 kHz, HMS) 150 mV
SIN .
PHONO 76 dB (77 dB, [HF 66)

TUNER, CD, AUX, TAPE 1, TAPE 2/000 90 dB (97 dB, IHF 66)
Frequency response
PHONO RlAA standard curve it dB (30 Hz - 15 kHz)
TUNER, CD, AUX, TAPE1, TAPE 2/DCC
3 HZ- 80 kHz (+0,-- -3 dB)
+0 dB,- 0.3 dB (20 Hz _20 kHz)
Tone controls
BASS 50 Hz, +10 dB, -10 dB
TREBLE 20 kHz, +10 dB, -10 dB

Control amplifier su-caoou
Power amplifier SE-AQOOS
System: SU-ABOOD
Control amplifier su-caoou
Power amplifier SE-Aaoas
Output voltage
TAPE 1, TAPE 2/DCC REC OUT 200 mV
PRE OUT I V
Channel balance (AUX, 250 Hz - 6.3 kHz) :1 dB
Channel separatolon (AUX, 1 kHz) 50 dB
I GENERAL
Dimensions (Wx H x D) 430x 69.3 X307 mm
Weight 2.7 kg
Notes:

1. Design and specifications are subject to change without notice.
Weight and dimensions are approximate.

2. Total harmonic distortion is measured by the digital spectrum
analyzer. .

~ AWAHNING

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.

Technics®

© 1995 Matsushita Electric industrial Co., Ltd.
All rights reserved. Unauthorized copying
and distribution is a violation of law.

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su-caoou I

l Contents
- Page
Front Panel Controls ........................................................................... 2 Printed Circuit Board Diagram
Operation Check and Wiring Connection Diagram.
Main Component Replacement Procedures Block Diagram .......
To Supply Power Source

Function of lC Terminals. Cabinet Paris Location.

. 3
. 4 Replacement Parts List
5
Schematic Diagram ..... 9

NOTE: . .
Refer to the service manual for Model No. SE-ASOOS (ORDER No.'AD9506164CS) or SE-ABOOS (ORDER No. AD9506165C2)
forlnformation on Accessories", Connections", Operations? and Packaging.

'l_ Front Panel Controls

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® Power "STANDBY C) ION" switch (5) Tape-monitor button/indicators (TAPE MONITOR)
(POWER, STANDBY (5 ION) n u . .
Press to switch the unit from on to standby mode or vice versa. 6) VIRTUAL BATI'ERY OPERATION Indicator
In standby mode, the unit is still consuming a small amount of This will illuminate to indicate that the virtual battery (a circuit
power. which removes the noise contained in the power supply while
if the power amplifier is turned on while the control ampliiier is playing a sound input source) is functioning.
on, this switch can then be used to turn both amplifiers on or to
standby mode Simultaneously. ® Muting indicator (MUTING)
® Input selector/Indicators (SELECTOR) Tone control button (TONE)
® Remote control signal sensor (SENSOR) @ Tone controls (BASS, TREBLE)
(4D STANDBY Indlcator (STANDBY) ® Volume control (VOLUME)

When the unit is connected to the AC mains supply, this indica-

tor lights up in standby mode and goes out when the unit is
turned on. 63 Balance control (BALANCE)

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MAIN P.C.B. (REP2156A-1 S) [Tnere are two kinds onype(A),(B)in the Main ace.)

1o swans
on SE-AEGUS

[emvuml

(necmun)

[FLAYUNJ]

TAFa/ncc

(Rectou'nl

su-caoou 7

Notes:

Type (B) is different from Type (A) in part of the foil patterns and the parts.

Repair the unit with attention to the differences.

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