Table of Contents
Advertisement
10
SWITCH CIRCUIT DESCRIPTION
START SWITCH FUNCTION
REJECT SWITCH
FUNCTION
When the reject button is depressed during operation, the
AUTOMATIC RETURN FUNCTION
transistor circuit determines Pin 3 voltage increases.
201
PHOTO-CELL
CIRCUIT
The
correct voltage alignment
is as follows:
adjust VR1
for 0.2VDC
T.P.
9 and 11 (OP. amp.
REF) Pin 2
adjust VR2
for 0.65VDC
REPEAT SWITCH FUNCTION
MANUAL OPERATION
When
the tone arm
is removed
from
the rest, the rest
switch is closed starting the turntable motor.
CUEING FUNCTION
CUE UP—
Momentarily depressing the cue switch by passes the gear
switch and starts the tone arm motor as well as turning the
main platter motor on. The tone-arm cam advances to the
lead-in position, this will stop the tone-arm motor because
the cueing switch is in the open position. The main motor
still remains on so the platter is rotating.
CUE DOWN—
Depressing the cueing button now
reverses the tone-arm
motor
rotation
and
returns
the tone-arm
cam
until the
gear switch is returned to the off position.
NOTE:
In the cue-up mode of operation, start and reject func-
tions cannot be performed due to incomplete tone-arm
cam cycle.
.
1C-7
UPC 741C
7
P
™
i
Cc
4
ed
ae
shied
tac]
tivapts deoutects
eben
he
;
Be
i
ae
a
Fok
FBS
Be
Re oy Hae Soh AS
:
aod
ae Hipeb Wibaded faishh bad do Pie
GS
hae
po
bp
Advertisement
Table of Contents
