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RP-107H/117H
©
SOLENOID
DRIVE
CIRCUIT
This circuit consists of 1C104, Q105, Q106 and Q107, and
;
M
:
to solenoid <
drives the solenoids shown below.
SCL101
1. Side A Tonearm Solenoid
When
the cue
key is pushed
during
side A playing, the
output signal from pin
of the microcomputer becomes
high level to be applied to 1C104, where it is changed to be
at low level. Then the low level signal is applied to the side
A tonearm solenoid to get it in action. While the solenoid is
cle
in action, the output
signal from pin 43) of the micro-
computer is kept at low level for 1 second during which
Q105 turns off, Q107 turns on and Q107 turns on, and the
fom Migros
iS
(%
4 +16V
resultant voltage (16V) attracts the solenoid.
computer
om
1 second later, pin 3) of the microcomputer becomes high
Pin
level to turn off Q106, causing voltage (5V) to apply it via
R131
to the solenoid.
In short, the solenoid attraction is
caused with the power of 16V first and then continues with
Figure 30-1
the power of 5V.
2. Side B Tonearm Solenoid
m2o2
When
the cue key is pushed during side B playing the
output signal from pin
of the microcomputer becomes
ae
high level to be applied to 1C104, where it is changed to be
at low level. Then the low level signa! is applied to the side
B tonearm solenoid to get it in action. The same operation
as in 1 above occurs thereafter.
<¢ from Micro-
cgmputer
(i4)Pin
a
Q105,Q107
2SC945
AIP
Qi06
2SA966 Y
@)()|ens201
CNP201
TURNTABLE
CHASSIS
MOTOR
NORMAL/REVERSE
RO-
Sree
TATION
SE LECTOR
CIRCUIT
nh
eas
OPEN/CLOSE MOTOR ROTATION
This circuit consists of |C202 and changes the power supply to
[2
make the turntable chassis motor rotate in normal or reverse
ar
direction.
© To make the motor rotate in normal direction (with turn-
table chassis close operation):
OPEN/CLOSE MOTOR CONTROL
The motor rotates in normal direction when pin
of the
weaeese
microcomputer
is at low level while its pin 41) is at high
Vee vec' O02 11
G6 Geta
1 vee' Vee
level. See Table 30-1.
® To make the motor rotate in reverse direction (with turn-
table chassis open operation):
ss
he
The motor rotates in reverse direction when pin a1) of the
eae
microcomputer is at low level while its pin
is at high
ad
level. See Table 30-1.
Figure 30-2
\000
1C202
Micro-
Turntable chassis motor
computer
|
operation
be Output
Input
Output
Pin]
Pin | Pin
| Pin
Pin
Pin
@|0!|@|@
@
al
In reverse rotation (with
turntable chassis open
H
L
H
1
H
L
operation)
tn normal rotation (with
turntable chassis close
L
H
L
H
L
H
operation)
In stop (with brake
applied)
H
H
H
H
L
H
t
Soci,
acieeisiaat
—
Turntable Chassis Motor Normal/Reverse
Rotation Selector
Circuit
Table 30-1
~30—
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