Sony PS-1150 - Automatic Return Operation Continuation; Tonearm Lifting and Rod Action; Motor Power Cut-off Sequence; Disassembly and Replacement Procedures

The main cam rotates and moves the tone-
arm lifting lever @) , causing the tonearm lever ass’y
qd) to pivot and raise the tonearm lifting rod @ as
shown in Fig. 1-5.
tonearm
lifting rod 4
tonearm
lifting lever
Fig. 1-5. Tonearm lifting lever movement
The movement of tonearm lever ass’y retains
the motor on/off switch (3)on position. This ensures
power to the motor to complete last half cycle of
rejecting operation after the tonearm has moved back
to its rest. When the main cam comes to its
last movement, the tonearm slide/return lever (6) is
moved back to its original position, cutting off power
to the motor, because the motor on/off switch
8 is pressed by means of the tonearm lever ass’y
as shown in Fig. 1-6. Now the tonearm returns
to its rest.
©) tonearm slide/return
lever
Fig. 1-6. Tonearm slide/return lever movement
switch bracket
PS-1150 PS-1150 |
|
SECTION 2
DISASSEMBLY AND REPLACEMENT
1-2.
MANUAL
REJECT
OPERATION
2-1.
TOP
COVER
REMOVAL
2-4,
TONEARM
REPLACEMENT
The tonearm can be rejected anywhere on
the record by using the manual REJECT knob
When REJECT knob is moved to the arrowed
direction qd) , the reject lever pushes the pin on the
trip pawl. Now the trip pawl moves to the turntable
platter arid enters path of the revolving-turntable
shafts tooth. This triggers the automatic return
operation as previously described.
main cam :
trip pawl
turntable platter
pin on trip pawl
pivot
reject lever
@ Unsolder lead wires.
wi 2-2. STYLUS REPLACEMENT — SH
BLK
REJECT knob
Fig. 1-7. Reject lever movement
°R-CH *
Q des
tonearm lever
2-3, CONNECTION OF CARTRIDGE
TO HEAD SHELL
connector
WHT
Pe
BLU (AEP, AUS model)
7 RED (E model)
i motor on/off
ee Switch
screwdriver