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Sony TC-818 Service Manual page 10

Stereo cassette deck

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3-3.
PRINTED
WIRING
BOARDS
@
See page 20 for Semiconductor Lead Layouts.
Note on Printed Wiring Boards:
®
O-——
: parts extracted from the component
side.
e
{
=: parts mounted on the conductor side.
® Semiconductor Location
Location
.
N o . | Location
D-21
B-13
G-13
D-19
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Note on Schematic Diagram:
@
All capacitors are in wF unless otherwise noted.
pF: uur
5OWV
or
less are
not
indicated
except
for electrolytics
and tantalums.,
@
All resistors are in 2 and '/,W or less unless otherwise
specified.
@
{#U+: fusible resistor.
CJ
: adjustment for repair.
Power
voltage
is fed
with
supply
from
external
power
voltage jack.
@
Voltage
and waveforms
are dc with
respect
to ground
under no-signal conditions.
no mark: REC
(
-): PB
@
Voltages are taken with
a VOM
(50 kQ/V).,
Voltage
variations
may
be noted
due to normal
produc-
tion tolerances.
@
Signal path.
()
: PB (DECK B)
(>>
: REC (DECK B)
Note: The components
identified by mark A or dotted
line with mark
are critical for safety.
Replace only with part number specified.
2
$30]
CNJ803(BLK)
{KEY BOARD]
CNJ8OMWHT)
CNJ804 (RED)
e999
ke
=x
=
\moaage ||
ro
MUA
tEEL / CAPSTAN
MOTOR
CHASSIS
CNJIZA
[ MD (A) BOARD]
&
:
CNJIZA(WHT)
icuasss\©)
O)icuassis
it
mp i
(
WHT
i
CNU82A(WHT)
WHT,
MIA
<
PLAYBACK
HEAD
CNUJ8IA,.
XK
CNU802(WHT)
QOaO0
Bee 1 2 ee
ee
$818
DIRECTION
MODE
=I
CD
RELAY
$302
DOLBY NR
OFF ==> ON
PMIIA
~\
"SN
LEAF SW
) BOARD
ee
ithe,
(S08
2 Pane" vase
+t
CNUITACWHT)
DECK
A
WHT OSEDER EE
4
2-3
¢
i
2>--
MUB
)
Bay eral
CNdYZBIELK)
C
O
ome,
Soh
ous
A
O
'
CNJI3B
a
v
{MD (B) BOARD]
CNJ828{8LK)
HRPUZHELL
PMIIB
RECORD/ PLAYBACK /ERASE
o
HEAD
WHT
=
CNISIB
Oy
° oe
3%
CNU83B(BLK)
:
LEAF SW
oan o s =>
i
B) BOARD
O
ss
eae
O
WRT
DECK
B
—13—
SI3B
(ERASE PROOF)
SIDE B
ee 7 ee

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