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Bell System Practices TOUCH-A-MATIC 2872A1M Identification, Installation, Connections, Operation, And Maintenance page 12

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SECTION 503-603-101
•.
MEMORY
LOGIC
RESET
SWITCH
CONNECTION
PINS
FOR D-180818
KIT OF PARTS
BATTERY
JACK
P OW ER S U PPLY
DIAL
CONNECTOR
CONNECTOR
Fig. 5--2872A2M
Telephone Set, Internal View, Overall
(4) Disengage
the
two
captive
dial
mounting
strapped
together.
(The
one-touch
calling
screws
and move dial aside,
option
can no longer
be
turned
off by the
subscriber.)
(5) Rotate
left edge of the memory
upward
as
shown
by Fig. 5.
(7)
Connect
switch
lead
connectors
to
post
terminals
on memory
board
per Table
K.
Note:
If set
is equipped
with
a 2870A
Memory,
replace
it with
2870B Memory
and
(8) With
feature
switch
in OFF position,
verify
carefully
pack
and
return
the
old memory
that
set operates
in normal
manner:
according
to local procedures.
• Numbers
can be recorded
into memory
(6) Mount switch below dial using the two screws
provided
(Fig.
4).
• Numbers
can be changed
Note:
If the one-touch calling switch (D-180493
• Numbers
can be deleted
from
memory.
Kit of Parts)
has
been provided,
it must
be
removed.
The PSB terminals
where the switch
(9) Set feature
switch
to ON position
and verify
leads
were connected
(Table
C or E) must
be
feature
provided.
Page 12

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