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Technics SL-HD301 Service Manual

Technics SL-HD301
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SL-HD301
/
SL-HD501
9
Schematic
Diagram
Notes
9.1.
Scheamtic
Diagram
Notes
This
schematic
diagram
may
be
modified
at
any
time
with
the
Important
safety
notice:
development
of
new
technology.
Components
identified
by
A\
mark
have
special
characteristics
important
for
safety.
Notes:
Furthermore,
special
parts
which
have
purpose
of
e
S701
:
Rest
position
detect
switch.
fire-retardant
(resistors),
high-quality
sound
(capacitors),
low-noise
(resistors),
etc.
are
used.
$790
:C
itch.
.
Ey
Sey:
openewito
When
replacing
any
of
components,
be
sure
to
use
¢
S791
:
CD
tray
close
switch.
only
manufacture’s
specified
parts
shown
in
the
e
S801
:
Stop
(fH)
switch.
parts
list.
e
$802
:
Play
(>
)
switch.
Caution!
e
S803
:
Pause
(ff)
switch.
iC
and
LSI
are
sensitive
to
static
electricity.
e
S804
:
CD
tray
open/close
(4
OPEN/CLOSE)
Secondary
trouble
can
be
prevented
by
taking
switch.
care
during
repair.
e
S805
:
F.
skip/
search
(
>>
/
PP)
switch
Cover
the
parts
boxes
made
of
plastics
with
e
S806
:
R.
skip/
search
(H@<q
/
<q)
switch.
aluminum
foil.
e
S807
:
CD
text
select
(CD
TEXT)
switch.
Ground
the
soldering
iron.
e
S808
:
Al
edit
(Al
EDIT)
switch.
Put
a
conductive
mat
on
the
work
table.
e
$809
:
Scroll
(SCROLL)
switch.
Do
not
touch
the
legs
of
IC
or
LS!
with
the
fingers
e
Indicated
voltage
values
are
the
standard
values
for
directly.
the
unit
measured
by
the
DC
electronic
circuit
tester
Voltage
and
signal
line
(high-impedance)
with
the
chassis
taken
as
=p==
=:
Positive
voltage
line
standard.
Therefore,
there
may
exist
some
errors
in
<>
:
CD
signal
line
the
voltage
values,
depending
on
the
_
internal
impedance
of
the
DC
circuit
tester.
No
mark:
CD
STOP
():
CD
play
[1kHz,
L+R,
0dB]
9.2.
Type
Illustration
of
IC’s,
Transistors
and
Diodes
LC66358C4K97
MN662790RSA
TA7291S
AN8739SBE2
TC74HCT7007A
AN8839NSBE2
24
LM2940T5SM
UPC29M33T
TOTX178
2SB709STX
é
28C4081STX
SP
DTA143XUT106
LE
DTC114YUT106
'
A
DTC143EUT106
DTC143XUA106
MA8082MTX
MA8039LTX
Cathode
&
A
SPR-30SMDTF
Anode
A_
Cathode
Anode

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Technics SL-HD301 Specifications

General IconGeneral
BrandTechnics
ModelSL-HD301
CategoryCD Player
LanguageEnglish

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