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SL-D210
m@ BLOCK DIAGRAM
AN6339
X101
Counter
|
52416kHzE5
13
Counter 2
9
full wave
drive circuit
om
C5
3 af
6
12
16
lev
334
945
$2
SELECTOR
icl
DI
$s!
TI
ON: OFF
_
eae
:
'
C
ie
m TROUBLE SHOOTING
@
Power source circuit
DC voltage of 1C101 pin 43) ——
11.8V
T1,$1
D1,
1C1, 1€101
Turntable does not rotate
Drive coil and Hall element
.
:
:
Drive coil
. Conduction check of drive coils (A1 ~ A4)
H101.
H102
2. DC voltage of Hall elements (H101, H102)
IC101
Refer to schematic diagram
®
Oscillator circuit
Waveforms of pins @ and @ of IC101
Refer to schematic diagram
Untable rotation
Turntable drive circuit
. DC voltage of pins @), 42,
and
45) of
1C101
Refer to schematic diagram
2. Waveforms of pins (%) ~
of [C101
Refer to schematic diagram
@
Speed selector circuit
DC voltage of pin @® of 1C101
33 rpm
1.4V
45 rpm
OV
Speed cannot be changed
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