STEREO RECEIVER
RX-V990
SERVICE MANUAL
YAMAHA.
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IMPORTANT NOTICE
This manual has been provided for the use of authorized
YAMAHA
Retailers and their service personnel.
It
has been assumed that basic service procedures
inherent to the industry, and more specifically
YAMAHA
Products, are already known and understood
by the users,
and have therefore not been restated.
WARNING:
Failure to follow appropriate
service and safety procedures
when servicing
this product
may result in personal
injury, destruction
of expensive
components,
and failure of the product to perform as specified. For these reasons, we advise all YAMAHA
product owners that any service required
should be performed
by an authorized
YAMAHA
Retailer or the appointed service representative.
IMPORTANT:
The presentation
or sale of this manual to any individual or firm does not constitute
authorization,
certification
or recognition
of any applicable
technical
capabilities,
or establish a principle-agent
relationship
of any form.
The data provided is believed to be accurate and applicable to the unit(s) indicated on the cover.
The research, engineering,
and service departments
of YAMAHA
are
continually
striving
to improve YAMAHA
products.
Modifications
are, therefore,
inevitable and specifications
are subject to change without notice or obligation
to
retrofit. Should any discrepancy
appear to exist, please contact the distributor's
Service Division.
WARNING:
Static discharges
can destroy expensive components.
Discharge any static electricity your body may have accumulated
by grounding
yourself to the
ground buss in the unit (heavy gauge black wires connect to this buss).
IMPORTANT:
Tum the unit OFF during disassembly
and part replacement.
Recheck all work before you apply power to the unit.
• CONTENTS
TO SERVICE PERSONNEL
1
INTERNAL
ViEW
1
REAR PANELS
2
SPECIFICATIONS
2 3
DISASSEMBLY
PROCEDURES
4
DIAGNOSTIC
MODE
~8
AMP ADJUSTMENTS
9
TUNER ADJUSTMENTS
10 13
IC DATA
1~18
BLOCK DIAGRAM
19 21
PRINTED CIRCUIT BOARD
22 32
PIN CONNECTION
DIAGRAM
33
IC BLOCKS
3~35
SCHEMATIC
DIAGRAM
36--39
PARTS LIST
40 53
REMOTE CONTROL TRANSMITTER
54
11005671
YAMAHA
YAMAHA
CORPORATION
P.O,Box1
Hamamatsu,Japan
1.4K-357
fQ]
f
Printed in Japan '96.5
Содержание RX-V990
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