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WM-A52/B52.
WM-A52/B52
1
2
3
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4
5
6
7
8
9
on,
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|
,
14
15
2-2. SCHEMATIC DIAGRAM
_
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|
|
|
ta
|
[MAIN BOARD]
oe
ferme
ep rst ae er es
arte
re ge
ee
ene erage
nee eRe rem ane Foe ery renee
ee = ate eRe
eg
ene
acta
eere ge
gC
oe
ge
age
a
eget
ca
7
|
:
; {JACK BOARD}
|
|
[
I
|
|
|
us0t
|
|
°
;
—
25° " NORMAL ——>METAL
—
+
[PHONES |
|
=
.
03-1
:
:
Sram F
BTS,
|
va
|
3
:
S304 TAPE
*
|
POWER)
|
;
A—c
i
H)
7
|
PPSO1-1
[fesekm
LAS523
|
HO
a
.
|
|
en ae
|
SERVO CONTROL
aap
|
Bae
1C601 LASS23
.
HPP301-2
ai
o
D
S
o
S
|
Lom |
-
Cust oT
es Then
|
cRPI !
=
(8)
ee
&
wn
-
PLAY BACK HEAD — |
'
on
(18 i
=
OW) so
|
e
3
S
R602
3
MOTOR
TOTAL CURRENT
|
S
PE
4
PLAY
116 mA
:
fate
FF
BO mA
:
$303
he
REW
80 mA
|
:
|
NORMAL.
——™ METAL
So =
zoe
,
|
NORMAL —
Cr02/
aN
tx
j DRY BATTERY
|
METAL
S-
|
| SIZETAAT
|
Bx
cus
:
<> (IEG DESIGNATION
R6)
7
ae
|
2PCS 3V
:
7
Note:
All capacitors are in uF unless otherwise noted. pF: uur
50WV
or less are not indicated except for electrolytics
and tantalums.
All resistors are in 2 and 1/,W or less unless otherwise
specified.
Total current is measured with no cassette installed.
Power voltages is dc 3V and fed with regurated dc power
supply from battery terminal.
. Voltage and waveforms are dc with respect to ground in
playback mode.
no mark:
PLAY
BACK
| Voltages are taken with a VOM (50 kQ/V).
Voltage variations may be noted due to normal produc-
tion tolerances.
Switches
$303
$304
TAPE
|
POWER
NORMAL
OFF
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