Sansui QS 800 Service Manual

Page 1

OPERATING INSTRUCTIONS
& SERVICE MANUAL

4-CHANNEL R1

u

mm. M m. .

3m;

SANSUI ELECTRIC CO, LTD.

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Congratulations on joining the thousands of proud, satisfied owners of quality
stereo components from Sansui. The QS-SOO is a marvelous combination of
Sansuis revolutionary 4-Channel Synthesizer Decoder (patents pending) and
a quality 200 watt stereo power amplifier to amplify the rear channels of
your 4-channel stereo system.

An instrument that heralds the new age of 4-channel stereo sound, the
QS-SOO converts your present collection of 2-channel stereo records and tapes,
as well as FM stereo broadcasts, into 4-channels. In addition, working in the
capacity of a 4-channel decoder, it restores any encoded Jrchannel material
to its original full-fledged 4-channel status.

Simply add the QS-800 to your present 2-channel stereo system along with
a second pair of speaker systems, and youll instantly have a Jrchannel stereo
system to fill your room with the vibrant atmosphere of live performances with
all their delicate nuances. It comes complete with all the popular refinements
of the best-selling 120«watt QS-SOO, and then some of its own that Sansui
has added for still greater convenience and versatility. Such as rear-channel
Bass and Treble Tone Controls, separate Phase Switches for the rear left and
right channels, Direction Switch, Power Limiter and so forth.

Before you rush to audition the new mind-blowing sound effect, however,
may we suggest that you read through this booklet once to acquire basic
knowledge about its operation.

Then youll be better prepared to enjoy 4-channel stereo sound at its very
best for years to come.

CONTENTS

SWITCHES AND CONTROLS .................................... 3, 4, 5
CONNECTIONS ...................................................... 6, 7, 8
ADJUSTMENTS ............................................................ 9
OPERATIONS ......................................................... 9, 10
NOISE REDUCTION SYSTEM ....................................... 11
TO ENJOY 4-CHANNEL STEREO AT ITS BEST ............... 12
SIMPLE MAINTENANCE HINTS ........................... 13, 1-1, 15
ABOUT SERVICING/ACCESSORIES .............................. 15
SPECIFICATIONS ......................................................... 16
SCHEMATIC DIAGRAM .......................................... 17, 18
DISASSEMBLY PROCEDURE/TEST POINTS .................. 19
ALIGNMENT ............................................................... 20
CUSTOM MOUNTING ................................................... 21
PRINTED CIRCUIT BOARDS AND

PARTS LIST ........................ 22, 23, 24, 25, 26, 27, 28, 29, 30

OTHER PARTS AND THEIR POSITIONS ON CHASSIS. . .31, 32