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DR- UA124X- 2, DR- UA124X- 3
DR- UA124X- 5
3. SCHEMATIC AND PCB CONNECTION DIAGRAMS
NOTE FOR SCHEMATIC DIAGRAMS
(Type 4A)
1. When ordering service parts, be sure to refer to
"PARTS LIST of EXPLODED VIEWS" or
"PCB
PARTS LIST".
2. Since these
are
bHlc circuits, some
parts
of them or
th•
values
of some
components may be
changed
for Improve-
ment.
3. RESISTORS:
Unit:
k:k
Q.
M:M
Q,
or
Q
unless
otherwise
noted.
Rated
power:
1/4W, 1/6W,
1/8W,
1/10W unless
otherwise
noted.
Tolerance:(F):±1%, (G):±2%, (K):
±
10%,
(M):±20% or ±5%
unless
otherwise noted.
4. CAPACITORS:
Unit
:
p:pF or
µ
F
unless
otherwise
noted.
Ratings
: capacitor (
µ
F)
/
voltage (V) unless otherwise noted.
Rated
voltage
:
50V
except for
electrolytic
capacitors.
5.
COILS:
Unit
:
m:mH or
µ
H
unless
otherwise
noted.
6. VOLTAGE AND CURRENT:
'[::J or
-v:
DC
voltage
(V)
In
PLAV mode unless otherwise
noted.
<=imA or
~mA
:
DC current In
PLAY mode
unless
otherwise
noted.
Value in (
) Is
DC
current
In
STOP
mode.
7. OTHERS:
•
©
or~
:
Adjusting
point.
• <4
:
Measurement
point.
•
The
it
mark found on some component parts Indicates the
Im-
portance of the safety factor of
the
parts.
Therefore,
when
replacing,
be sure to use parts of Identical
designation.
8. SCH
-
0
ON THE
SCHEMATIC
DIAGRAM:
•
SCH-
O
Indicates the drawing
number
of the schematic
diagram.
(SCH stands for schematic diagram.)
9.
SWITCHES (Underline Indicates switch
position):
MOTHER
BOARD ASSY
S701
:EJECT SW
INSW UNIT
S901
:DETECT SW
8
NOTE FOR PCB DIAGRAMS:
1.
Part numbers in PCB diagrams match
those in
the
schematic
diagrams.
2. A comparison between the main parts of PCB and ·schematic
diagrams is shown
below.
Symbol
in
PCB
Symbol
in Schematic
Part Name
Diagrams
Diagrams
B
c
E B
c
E
~
1©J l©J
Transistor
BC E
B
c
E B
c
E
~
l © J 141
Transistor
BC
E
with resistor
D G
s
D
G
s
~
l@J 1@J
Field
effect
D
GS
transistor
.
(o o
o~o
oo)<l
mm
.
Resistor array
loo ol
-g
3-terminal
regulator
(
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