
TA-N511/N611
|
TABLE
OF
CONTENTS
SAFETY
CHECK-OUT
Section
Title
Page
After
correcting
the
original
service
problem,
perform
the
following
safety
check
before
releasing
the
set
to
the
customer:
Specifications
-+++++++++++sseerseeeeccreeeeeeeeeeeeens
1
Check
the
antenna
terminals,
metal
trim,
“metallized”
Model
Identification
:+++++++++rrerserersereeeeee
sees,
2
knobs,
screws,
and
all
other
exposed
metal
parts
for
AC
leakage.
Check
leakage
as
described
below.
1.
GENERAL
«+e
e
cece
c
cece
cece
cece
tence
eeetenecreees
3
LEAKAGE
TEST
2.
ADJUSTMENTS
--
eee
ee
eee eee
e
cette
eer
e
eee
e
eens
5
The
AC
leakage
from
any
exposed
metal
part
to
earth
ground
and
from
all
exposed
metal
parts
to
any
3.
DIAGRAMS
exposed
metal
part
having
a
return
to
chassis,
must
3-1.
Semiconductor
Lead
Layouts:::++++++seeee
6
not
exceed
0.5mA
(S00
microampers).
Leakage
3-2.
IC
Block
Diagram
-+r++
esse
cere
ee
eeeeeeeeees
6
current
can
be
measured
by
any
one
of
three
3-3.
Printed
Wiring
Boards:+::++++++-
tence
eeeees
7
methods.
3-4,
Schematic
Diagram
-+++-++ee
eee
e
eect
e
eens
11
1.
A
commercial
leakage
tester,
such
as
the
Simpson
229
or
RCA
WT-540A.
Follow
the
manufacturers’
instructions
to
use
these
instru-
A.
EXPLODED
VIEWS
----+---
eee
cece
eee
e
tere
eee
ences
14
ments.
2.
<A
battery-operated
AC
milliammeter.
The
Data
5.
ELECTRICAL
PARTS
LIST
--++++---+seeeeeeesers
16
Precision
245
digital
multimeter
is
suitable
for
this
job.
3.
Measuring
the
voltage
drop
across
a
resistor
by
means
of
a
VOM
or
battery-operated
AC
volt-
meter.
The
“limit”
indication
is
0.75
V,
so
MODEL
IDENTIFICATION
analog
meters
must
have
an
accurate
low-
—
Specification
Labels
—
TA-N511
voltage
scale.
The
Simpson
250
and
Sanwa
SH-63Trd
are
examples
of
a
passive
VOM
that
is
suitable.
Nearly
all
battery
operated
digital
multimeters
that
have
a
2V
AC
range
are
suitable.
(See
Fig.
A)
STEREO
POWER
AMPLIFIER
To
Exposed
Metal
Parts
on
Set
|
SERIAL
NO.
|
MADE
IN
JAPAN
V
AC
voltmeter
(0.75
V)
US,
Canadian
models
:
120V
AC,
60Hz
Australian
model
:
220V
AC,
50,//60Hz
“=
Earth
Ground
E
model
:
120V,
220V,
240V
AC,
50/60Hz
Fig.
A.
Using
an
AC
voltmeter
to
check
AC
leakage.
SAFETY-RELATED
COMPONENT
WARNING!!
ATTENTION
AU
COMPOSANT
AYANT
RAPPORT
COMPONENTS
IDENTIFIED
BY
MARK
A\
OR
DOTTED
A
LA
SECURITE!
LINE
WITH
MARK
/\
ON
THE
SCHEMATIC
DIAGRAMS
LES
COMPOSANTS
IDENTIFIES
PAR
UNE
MARQUE
/\
AND
IN
THE
PARTS
LIST
ARE
CRITICAL
TO
SAFE
SUR
LES
DIAGRAMMES
SCHEMATIQUES
ET
LA
LISTE
OPERATION.
REPLACE
THESE
COMPONENTS
WITH
DES
PIECES
SONT
CRITIQUES
POUR
LA
SECURITE
SONY
PARTS
WHOSE
PART
NUMBERS
APPEAR
AS
DE
FONCTIONNEMENT.
NE
REMPLACER
CES
COM-
SHOWN
IN
THIS
MANUAL
OR
IN
SUPPLEMENTS
PUB-
POSANTS
QUE
PAR
DES
PIECES
SONY
DONT
LES
LISHED
BY
SONY.
.
NUMEROS
SONT
DONNES
DANS
CE
MANUEL
OU
DANS
LES
SUPPLEMENTS
PUBLIES
PAR
SONY.
—2—