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(1) Disconnect the power unit and manually dial
a known telephone number to check that
the telephone operates correctly in
the
absence
of commercial power.
(2)
Reconnect the power unit to ac outlet.
(3) With handset on-hook, record digits 1 through
0 into consecutive memory locations,
storing
one digit per
memory.
Fill all memory locations
except LAST NUMBER DIALED and location
immediately above it [5.01
(4)
through
(7)].
(4)
Manually dial CO dial test and ringer circuit
and simultaneously record
into
memory
location
immediately
above LAST NUMBER
DIALED button [5.01
(4) through (7)].
After
depressing RECORD OFF
button,
and
when
dial
test circuit is ready, test dial frequencies by
manually dialing digits 1
through
0 into
the
test
circuit.
(5)
Momentarily hang up handset and automatically
dial the
test
circuit number recorded in Step
(4)
by depressing button immediately above
LAST NUMBER DIALED button and proceed
as follows.
(a)
Depress LAST
NUMBER
DIALED button.
Digits 1 through 0
will
be automatically
dialed into test
circuit.
Verify
that
correct
signal is returned from
test circuit.
(b)
Momentarily depress
the
memory buttons
used in Step
(3)
in
the same sequence in
which the digits
were
recorded.
Verify that
correct
signal
is returned from test circuit
after
each series
of
numbers.
Tb.e battery and tb.e power unit must
be connected a minimum of five
minutes before doing Step (c).
(c)
Momentarily disconnect
the
power unit
(for
5
to
10
seconds).
After reconnecting
power unit, depress a memory button
of a
memory location used in Step
(3), to verify
retention of memory.
(6)
Dial
the
appropriate
code
for ring-back
to
test
the
ringer.
ISS 4, SECTION 503-603-101
(7) Check operation
of the logic reset switch
by pressing
the
RECORD button
(RECORD
lamp
will
come on) and subsequently pressing
an unoperated line button. The RECORD lamp
must go out.
(8)
If equipped with one-touch calling option
(D-180493
Kit of Parts and speakerphone),
and with
set
in on-hook condition, depress the
memory button used in Step
(4).
The
speakerphone
should
turn on, dial tone
should
be detected,
and
the stored
number should be automatically
dialed.
OPTIONAL APPARATUS INSTALLATION
D-180492 Kit of Parts (With Speakerphone)
3.08
To install.
(1)
Proceed as described in 3.16.
(2)
Make connections per the appropriate Tables,
B through E.
(3)
Mount the kit assembly
to the
chassis with
the screws
provided
(Fig. 4).
Beveled corner
of printed
wiring
board
(PWB) should
be located
at lower right
corner.
D-180493 Kit of Parts (Dial Tone Detector and
One-Touch Calling Switch)
3.09
To install.
(1)
Remove
the
housing (3.21), and access PSB
terminal
board (3.17).
(2)
Insert
the
board assembly from the back of
the
set and
locate as
shown
in Fig.
4,
such
that
the
two
tabs on
the board assembly fit into
the slots in the
bottom of the chassis.
(3)
Lock
the
board into position by
inserting
the self-threading screw through
the right
side
of the
chassis.
(4)
Mount the one-touch
calling
switch below
the
dial
with the two screws
provided.
Note: If
switch
for D-180818 Kit of Parts
is
already
present, the
one-touch calling
switch
can
not be installed. The PSB terminal
where
the switch
leads should be
connected (Table
Page 9
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