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adhered to during manufacture will be maintained following any servicing procedure
Prefixed to
EXPRESSION
7
7 D D
OBSERVATION OF VOLTAGES AND WAVEFORMS
1. Voltage readings were obtained using a high impedance digital voltmeter.
VALUE OF RESISTOR, CAPACITOR and INDUCTOR
2. (—) or ground lead of instruments should be connected to the ground marked (1) in the
1. Resistance is shown in ohm, k=1,000, M=1,000,000.
shematic
on checking
Non-isolated
circuit surrounded by mark but should be connected
2.
Unless
otherwise
noted
in
schemati
|
F
4
to the points marked
( +r ) on checking isolated circuit.
schematic,
all capacitor
values
less than
1 are expressed
in
uF and the values more than
1 in pF.
3. Th
It
dings may
vary
as much as +20%.
3. Uni
herwi
:
?
;
;
SCHEMATIC
DIAGRAM
(2/2)
4. check nse fe Tenn
AEC Brightness, Conan and Colour controls are adjusted for
Bee
ee
ee nematic, all inductor values: more:than:
1 ate expressed in
HH, and the values less than 1 in H.
the best
picture,
making
sure
that the Contrast,Brightness
and Colour
controls are set
near to their mid-positions.
5. The waveforms were taken using a standard colour bar signal and were observed using a
GROUNDING
SYMBOL
wide band oscilloscope via a low capacity probe.
1. 4: Non isolated ground,
xy
: Isolated ground.
US03
POW.DEF.AUD
BOARD
PB4712[28"]
/ PB4758[25"]
AUDIO
OUTIR/L)
(OUND
OUT
1C670
/
TA8218AH
oil
v
OUT__MUTE
GND.
2.2V¢
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© 0672 © D673 ©
© 0674 4" D675
aE
1N4148 | 1NG148
1N4148| 1N61Z8
1N41 48] 1NG1Z8
47 (25V)
ES.
681 | C680
+ 47 (25V)] 47"(25V)
=
'C679
+
te
5
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21 Tce.
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8
we
10004(36V)
COR.
\
+
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+
Lowest
bec Shs2ésesi os
el
avp-
SPK-1361
=
=
35V(10004)105"
(10W 8a)
SN:24668102
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mesta
LC]
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=
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+
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le
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TEM1014
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Mad aban seme r ater eer
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