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SCHEMATIC DIAGRAM
Q1, 2,3, 4
2SC2021LNF(R,S)
A
or 2SD636H(R,S)
[2SC2021]
B+ 4.30V
B+ 5.09V
PLAYBACK
HEAD
O
B
L-CH—-» {&
y,
O)
(QWY4144Y)
C
>
C45 2200P o
B+ 4.30V
R24
PLAYBACK
HEAD
tS,
2
UC e Dee
R-CH—»
Si
D
(QWY4144Y)
R21
1OK(A)
56K
E
SPECIFICATIONS
* Volume control... MAX
NOTES:
OUST
wes veseevnceceds Power ON/OFF
switch (shown in OFF position).
Oya
ieees O72 GEN
More Han 40dB
° eee
(shown in NORMAL position).
(Use AC adaptor: 6V)
(without NAB filter)
© VR occccccceeees Playback gain adjustment VR (L-CH).
:
* Connection
point (A)...... For playback gain adjustment point (R-CH).
¢ Resistance are in ohms (Q), 1/4 watt unless specified otherwise.
K = 1,0002,
M= 1,000 KQ.
¢ Capacity are in microfarads (uF) unless specified otherwise.
P = Pico-farads.
¢ All voltage values shown in circuitry are under no signal condition and
playback mode with contro! at maximum position.
For measurement,
use VTVM.
F
7 (=>) this arrow indicates the flow of the playback signal.
Described in the schematic diagram are two types of numbers; the supply
parts number and production parts number for transistors and diodes.
One type of number is used for supply parts number and production parts
number when they are identical.
1C1, 2
D1
[BA527]
1SR35200
_
[SM112]
Power AMP
oe GB)
(Bee
+ 5.89V
Connection Point (A)
eg.
Q1
2$C2021LNF(R,S)—— Production parts number
or 2SD636H(R,S)
(28C2021]
Supply parts number
Dt
1SR35200
Production parts number
{SM112]————_———
Supply parts number
* The supply parts number is described alone in the replacement parts list.
* This schematic diagram may be modified at any time with
the development of new technology.
Jt:
HEADPHONES
(162)
J2:
DC IN (6V)
— BATTERY
= (6V)
MOTOR
(HCiISS6RAKA)
oS
A
&
ee
EQUIVALENT CIRCUITS
IC1, 2 BA527
]
2
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