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ERE0 POWER AMPLIFIER
CONTENTS
f
IMPORTANT
NOTICE
This
manual
has
been
provided
for
the
use
of
authorized
Yamaha
Retailers
and
their
service
personnel.
I t
has
been assumed
that
basic
service
procedures
inhennt
to
the
industry,
and
more
specifically
Yamaha
Products,
are
already
known
and
understcad 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
Eamponentr
and
failure
of
the
product
to
perform
as
specified.
For
these
reasons,
we
advise
all
Yamaha
product
ownel
rhat
all
sewib~
required
should
be
performed
by
an
authorized
Yamaha
Retailer
or
th
appointed
service
representative.
IMPORTANT:
The
presentation
or
sale
of
this
manual
to
any individual
or
firm
does
not
~onstitute
authorization,
certification
o r
remgnitidn
of
any
appllcaMe
technical
aapabillties,
or
establish
a
principle-agent
relationship
o f
any
form.
The
data
provided
is
believed
to
be accurate and
applicable
to
the
unit(s)
iddftxtted
an
the
wver.
The
research,
engineering,
and
service
departments
of
Yamaha
are
continually
striving
to
imptwe
Yamaha
products.
Modifications
are,
therefore,
inevitable
and
specifications
are
subjectt~
chaage
wi&out
notice
or
obligation
to
retrofit.
Should
any
discrepancy
appear
to
exist,
please
contact
the
distributor's
Servim
Division.
WARNING:
Static
discharges
can
destroy
expensive
components.
Discharge
any
staticelectricity
your
body
may
have
accumulated
by
grounding
yourself
to
the
ground
buss
in
the
unit
(heavy
gauge
black
wires
c~lncct
to
this
buss).
IMPORTANT:
Turn
the
unit
OFF
during
d~sassembly
and
parts
replacement.
Recheck
all
work
before
you
apply
power
to
the
unit.
L
- -
- -
TO SERVICE
PERSONNEL
.................
1
ADJUSTMENTS
........................
4
FRONTIREAR
PANELS
...................
1
PRINTED
CIRCUIT
BOARD
.............
5
-
9
SPECIFICATIONS
.......................
2
SCHEMATIC
DIAGRAM
..................
10
BLOCK
DIAGRAM
......................
2
W I R I N G . .
...........................
11
INTERNAL
V I E W . .
.....................
3
P A R T S L I S T . .
. . . . . . . . . . . . . . . . . . . .
1 2 - 2 0
DISASSEMBLY
PROCEDURES
..............
4
YAMAHA CORPORATION
PO.Box
1.
Harnarnatsu. Japan
1.35K-604
liq@
Printed in Japan
'88.8
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