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SECTION 502-510\-201
faults detected by use of the fault location guide
should
be repaired by
substitution
of
the
items
as
described below.
A.
Housing (Desk Telephones)
Removal
1.
Loosen
the captive screws (Fig. 1
i)
in the
base of the
telephone
set until the
screws
disengage
from the housing.
2.
T'ilt the
housing forward and lift the housing
vertically from
the
telephone set base
until
the dial, line switch, exclusion
switch
and
tumbutton
are
cleared.
Assembly
1. Align the housing over the telephone
set
base so
the
dial and turnbutton
coincide
with their
respective
holes.
2.
Lower
the
housing
onto
the
telephone set
base.
3. Tighten the two captive screws in the base.
8
.
Housing
(Wall
Telephones)
Removal
1. Push inward
on the
bottom of
the
housing,
2. Depress with a
screwdriver,
the tab of the
snap
fastener
located
in the handset
cord
slot (Fig. 3 and
4)
,
3. While
the
tab
is
depressed,
lift the
lower part
of
the
housing outward
and
upward,
releasing
the
fastener catch and
disengaging the
latch opening
assembly.
Assembly
1.
Slip
the
housing over the handset
cradle and
dial (and monitor or exclusion button if
applicable).
816
2. Engage
the
housing
latch
(Fig.
4)
,
located in
the top
of
the housing, in
the base spring. If
a
ground
or 2-line switch
is
present
in the
set,
ensure that
the switch
is
in line
with
the housing
hole
.
3.
Press
firmly on the lower part
of
the housing
to engage
the
catch.
C.
Ringers
Removal
1. Remove the
housing
per
6.01
A
or
B.
2.
Disconnect
the
ringer
leads.
3.
Loosen the two
pan head mounting
screws
next to the gongs, until the
screws disengage
from
the
telephone set
base.
(Fig. 13.)
'
4. Remove the ringer and grommet
from
the
lower edge
of the line
switch
assembly
mounting.
Assembly
1
.
Install
the
ringer by reversing the
above
procedure.
D:
Dial
Removal
I.
Remove
the housing per
6.01
A
or
B.
2. L9osen
,
but do not remove, the two
screws
on each side
of
the
dial
(Fig.
6).
3.
Li(t
the dial from
the bracket
(it
may be
necessary to
force
the bracket
arms away
from the
dial).
4. Disconnect the dial leads
from the
network
,
and
from
the terminal strip
if
applicable.
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