Sony WM-10 User Manual

WM-10 WM-20
• No converter operation
Operation:
1.5V is first made AC, raised to 3.0V, then DC 3.0V
is obtained. Frequency approx. lOQkHz.
* Converter Board Simple Check Method
When the converter board is on the servo board (A),
check for 3 V between @ and ® .
When the converter hoard is by itself, solder on a 1,5kO
resistor as shown in the figure below and check for 3V
between ® and ® .
[CONVERTER BOARD]
0001 ZSBS24-BV3
[ CONVERTER BOARD I
Voltage check location
Transistor Section
Tr name open
short
between
E—C
short
between
E-B
Q801
ov 3,0 V OV
Q802
ov
0,4 V
Q803 ov
ov 0,4 V
Q804 ov
ov ov
Q805 7V
0.5V 4,2V
0617
OV 3.0V
ov
D801 7V OV
1 pa*En o*
... omz 2SCISS3 QBDS 25CI6Z3
HECT|P|£E VOLTAGE SE&
' ” i
1
I ov-
-tTiieo*
Q803
25D&*6-3-'
SWIM-HI Hi.
oeo k
RD4..3H-02 '
GB02
DftOI
imi TV
' - t'
0ft“4
ftflfU I X-ISPlH ,, v .
SW f T AJC04T 11 “
I_1 av-
kp
r * k
r*H0?
470fc
*4 LBV
'mJT
*T
-C&0J
' KLfflV
iFl
■ W w
rfi
€
J i
t
Resistor, Transformer Section
R, T name
open
R801, R803, R804,
R63S, R639, TSOI
OV
measured when each Tr is removed.
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Sony WM-10 Specifications

General

Brand	Sony
Model	WM-10
Category	Cassette Player
Language	English