Seeburg LS 1 - 4. SUBTRACT CIRCUIT

SERVICE MANUAL
10- 22
Page
9
4.
SUBTMCT
CIRCUIT
After credit
has beeo
established and the
desired
selector buttons
ptessed, the
phonograph must
Pet-
fcm several
functioos.
These are
(l)
mechanically
subtract the
appropriate
number of credits
from the
credit ratchet
wheel,
(2)
stan
.he scao operatioo,
(3)
SE LECT-O-MATIC
PHONOGRAPH, ModeI
LSl
fcortl
swttctt
ASSEiIBLY--l
trigget the vrite-in
pulse,
(4)
impulse
the selection
counter
and
(5)
energize
the
timing
relay.
These
functions are
accomplished
by eoergizing
the sub-
ttact soleooid
as
described
in
the
followiog
para-
graphs.
Refer to
Figure
J.
Since
these oPerations
rnust
occur
in
a giveo sequence,
the tioing relay
is
energized by
the
subtract soleooid
to iosure
proper
timing
of the opeiations.
I
L
l
SSU4
t
a
sccT
NOTEi Altcoitact.
thom
wtth ZERO
CREDIT
oo
phonosrsph
snd mechanr'h
at REST
POSITION'
i---
r
I
,..oo
l,m
-.l
I
I
l
l
I _ _ES,]6L3
F igure
3.
Sioplified
Siogle
aod
Albuo Subtract
Circuit.