Seeburg 7800, Руководство по обслуживанию

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FUNCTIONS OF COMPONENTS IN SYSTEM
I .
sntP H O H O L A
A . COIN SWITC.H ASSE]l(BLY
'v'hen a
25¢
coin enters the
runway of the coin switch as sem­
bly (Fig.
29-B)
it successively
moves the levers of the coin
switches Nos.
1, 2, 3, 4 and
5
downward, making a single contact
for each lever moved. Each con­
tact made should store a play !n
the play magazine.
Fig.
29-A
is a front view of
the coin switch as sembly showing
the 5¢ and
10¢
runway. �/hen
a
5�
coin enters, it vravels down the
right hand runway, moving the
lever o n No.
4
coin sv1i tch dorm­
ward, making a single, contact.
This should store one play in the
play magazine.
ltJhen a
10¢
coin enters, it
travels dov,n the left hand run­
way, moving
�fo.
l and No.
5
coin
switch levers downward, making
two contacts. This should store
two plays in the play magazine.
B. :MET.HOD OF SELECTING TRAYS IN
THE S YMP}lON-'.JLA C.H.ASSIS
Vlhen a selection is made one
tray only should be pulled out at
a time , The trays �re w i thdra
'i\'!l
by means of tee selector slide
pawls (Ftg. 6H, No.
1183)
of
which there are twenty. One of
t.�ese slide pawls engages a lug
on a tray (No.
1110)
when one of
the rollers (No.
1223)
of the
Helix (No.
3201)
push against the
selector slide pawl spring (No.
thereby movmg the pawl (No.
inward, as sho\lm in Fig. 6H.
The selector pawls (Fig.
6H,
No.
1185)
are urged inward at all
times by the action of the selec­
tor pawl springs (No.
1184).
3
But when the selector slide (No .
1180)
is in oosition w:lih the
selector pawis opposite the lugs
as shown in Fig. 6G, then the
action of the selector pawl lift
springs (No.
1113)
is stronger
and overcomes
the
pressure of the
selector pawl springs (No.
1184)
and prevents the selector pawls
from engaging the lugs on the
trays (Fig.
60).
That is, with
the exception of that particular
pawl which is pressed in through
the action of the helix roller
against the selector pawl spring
(Fig. 6H, No.
1184).
C. MOTOR MOUNTING
The motor is resiliently
mounted on steel springs (No .
1841
a s shown in Ftg. 5A) in
order to prevent vib!'ation from
the mtor being transmitted
through the chassis and reaching
the pickup.
D.
RECORD PLAYI!\G IND1C ATOR DIAL
The "record playing'' indi­
cator dial is located just back
of the cabinet escutcheon and i s
illuminated by the same lamps that
illuminate the program holder. It
is timed with the selector in such
a manner tha� is always indicates
the number being played. On the
hi-tone models
8800
and
9800
a
single lamp illuminates both the
record playing dial, the credit
dial and the front vertical plas­
tic.
E. RECORD PREF
EREN
CE :METER
A
play meter indicating the
number of plays obtained from
each record
is
conveniently lo­
cated and attached underneath the
front shelf below the tone arm
post. An individual dial for
each record turns one notch