Seeburg 7800, Руководство по обслуживанию

Страница: 35 / 87

Senioe
Manual '41 Models 7800, 1850, 8800 and 9800
B .
COIN SWITCH CONTACTS l�OT
PROPERLY
ADJUS Tl!:D
If
a coin switch in the coin
switch assembly fails to make
proper contact, 1t is usually be­
cause it has accumulated dirt or
film on the cont�ct surfaces
or
because the contact surf aces are
pitted. Dirt or film should be
cleaned .f'ro:n the contacts and
pitt&d contacts should be pol­
ished with a burnishing tool.
There may also be insuffi­
cient contact pressure. To
c o
r
r
e
ct this, the contact blades
ma�' be bent with a contact bend­
ing tool.
C . :ftkTCHET ·wl!Ef.L l!:SCAPE7�ENT
LEVER
TOO FAR
FRON CREDIT
MAGNET
when the x·atchet escapement
lever
(Fig.
24,
rtem
l.3)
is too
far from the credit magnet
(
F
i
g
.
24,
Item l7) the magnetic attrac­
tion will not be sufficient to
move the escapement lever and
store credit on the ratchet
wheel.
If
the escapement lever
engages the teeth of the ratchet
wheel more than
1/16",
the
ratchet escapement stop bracket
(
Fig.
24,
Item
16)
may be moved
closer to the credit magnet.
If
th e engaging tooth of the es­
capement lever clears the teeth
of the ratchet
wheel
bY more than
l/Z.21!
when the escapement leve1·
is sealed against the credit pole
faces, the credit magnet
may be
moved toward the escapement
lever.
D . RATCHET ESCAPEM�T LEVI;'.R
ALLOWS TOO
MANY
PLAYS
F'OR
COINS INSERTED
The hook on the end of the
ratchet escapement lever
(
Fig.
24,
Item
13)
to which the
escapement lever spring
(
Fig.
24,
Item
14)
is connected may fail
or nearly fail to engage a tooth
when the escape.lllent lever is
slowly moved to�ard t.�e c r e
d
i t
magnet by hand. This may be due
to too great a distance between
the ratchet wheel and the escape­
ment lever or to a derormation
of the escapement lever. I t can
usually be corrected by spring­
ing the two engaging points of
the ratchet lever together.
E . RATCHET W-rlEEL BINDiflG
The
shoulder on the shoul­
der screw
(
Fig.
22,
Item
38)
m a y
clamp the ratchet wheel assembly
to its support bushing. To
remedy this, file the hub on the
ratchet wheel sltghtly. Birt or
an accumulation of plating may
cause the ratchet wheel to bind .
l'he parts should be thoroughly
cleaned or dirt or plat1r-g and
should be oiled.
I !:> , ELE C T R I CAL S E L E C T O R MA!( E S N O
R E S P O N S E W H E N B U T T O N S A R E P R E S S E D
A.
GENERAL CAUSE
It is assumed that there i s
credit on the ratchet wheel .
If
the series relay does not oper­
ate when a selection button is
pressed, the trouble can be
28
fol,.\11(!
�y lnvestig�ting the series
relay circuit
(
Fig.
20),
t..1rough
the selector switch, the credit
svlitch, the
interlocking
relay
contacts, the series relay coil,
the solenoicl.s end the countex­
reley,