Sansui AU 777 Service Manual

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SERVICE MANUAL

SOLID- STATE STEREOPHONIC AMPLIFIER

AU. 777

.
Sam
SANSUI ELECTRIC COMPANY LIMITED

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SAN SUI

SOLID STATE
STEREOPHONIC
PRE-MAIN AMPLIFIER

AU. 777

HOW TO USE THIS SERVICE MANUAL

1. Look up the type of trouble you are confrented with in either
the General or Amplifier Troubleshooting charts provided in this
manual.

2. By referring to the charts, isolate the trouble to a particular
unit or part. (See the column titled What To Do in the General
Chart and Check Point in the Amplifier Troubleshooting chart).
3. Locate the section of the chassis in Which the part is located
by using the co-ordinates (Column D) in the Parts List pp. 21-25.
4. Using the co-ordinates given in the Parts List (Column C),
pinpoint the position of the part in the Schematic Diagram pp.
13-14

NOTE: Much of the information contained in this manual has
been prepared for use by qualified service repairmen. Please read
your Warranty thoroughiy before attempting any internal adjust-
ments on your own.

CONTENTS

GENERAL SECTION .................................... 3, 4
AMPLIFIER TROUBLESHOOTING CHART
OVER ALL PROGRAM SOURCES .................. 5, 6, 7
FOR USE WITH A RECORD PLAYER
(MAGNETIC) OR A TAPE DECK ................ 7, 8
OTHER PROGRAM SOURCES ...................... 9"
REMOVING THE FRONT PANEL, BONNET AND

BOTTOM PLATE .................................... 9

PRINTED CIRCUIT SHEETS 10, 11,12
SCHEMATIC DIAGRAM ...................... 13,14
SELECTOR CHART ............ 15, 16
ALIGNMENT ................... 17,18
PARTS LAYOUT ............ 19
BLOCK DIAGRAM . ............ 20

PARTS LIST ................... . .. 21, 22, 23, 24, 25
COLOR CODE ........................................ 26