Sansui AU 9500 Service Manual

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TING INSTRUCTIONS
ggRfiRVICE MANUAL

STEREO AMPLIFIER

SANSUI AU'9500

For Service Manuals Contact
MAURITRON TECHNICAL SERVICES
8 Cherry Tree Rd, Chinnor
Oxon OX9 4QY
Tali-01344651694 Fax:- 01544352554

Email:- mmfiwmmmwm

SANSUI ELECTRIC CO. LTD.

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We are grateful for your choice of the AU-9500 Integrated
Amplifier.

* For over a quarter of a century,~Sansui has been building hi-fi audio
equipment, and nothing else. Our mission is very old and at once
ever new to us: to bring the reproduced sound closer and closer to
the original.

The AU-9500 now in your hands is one answer from us to this
never-ending quest. It is a product of the cream of highly advanced
modern audio-electronics knowhow, coupled with our long experi-
ence. As such, we present it to you with our full confidence.

The AU~9500 incorporates an all«stage direct-coupled pure com-
plementary power amplifier that delivers a continuous power output
of 85 watts per channel (each channel driven) into 8 ohms, with the
total harmonic distortion of less than 0.1% over the entire audio
spectrum. It connects three pairs of speaker systems, two turntables
and two tape decks, while offering such sophisticated refinements
as triple tone controls with adjustable turnvover/roll-off frequencies,
inputs for a 4-channel adaptor and a noise reduction adaptor,
preamplifier outputs and power amplifier inputs, tape-to-tape
reprint facilities, and an audio muting switch.

This manual has been prepared to guide you in operating and caring
for the amplifier correctly, so that you will obtain the most out of
its built-in high performance and exceptional versatility.

May we suggest that you read it once carefully?

CONTENTS

SWITCHES AND CONTROLS ................................. 3, 4, 5, 6
CONNECTING SPEAKER SYSTEMS/

PLAYING RECORDS ................................................ 7, 8
RADIO RECEPTION/USING MICROPHONES .................. 9
QUICK CHECK LIST OF SIMPLE MISTAKES .................. 10
RECORDING AND PLAYBACK BY TAPE DECKS ......... ll, 12
UPGRADING YOUR STEREO (4-CHANNEL STEREO

SYSTEM/ELECTRONIC CROSSOVER SYSTEM) ............ 13
SIMPLE MAINTENANCE HINTS .............................. 14, 15
SPECIFICATIONS ................................................... 16
SCHEMATIC DIAGRAM .......................................... 17, 18
GENERAL TROUBLESHOOTING CHART ..................... 19
DISASSEMBLY PROCEDURE .................................... 2O
ALIGNMENT .................................................. .i
PRINTED CIRCUIT BOARDS AND PARTS LIST ......... 23~ 32

OTHER PARTS AND THEIR POSITION ON CHASSIS ...33, 34