Technics SLD210

SL-D210
m@ BLOCK DIAGRAM
AN6339
X101
Counter |
52416kHzE5
13 Counter 2
tev
-
Speed
select
Drive
coil
7
=
emi
Two
phase
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