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Handset; Faceplate - Bell System Practices TOUCH-A-MATIC 2872A1M Identification, Installation, Connections, Operation, And Maintenance

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SECTION 503-603-101
(1) SDisconnect
power
unit from
ac outlet
and
(3) Remove
faceplate
(paragraph
3.19),
and
unplug
battery,
place
handset
aside."
Note:
Removal
of
ac and
battery
power
(4) Remove upper housing,
if provided,[paragraph
results
in loss of stored
numbers.e
3.21(b)].
(2) Remove
the faceplate
(paragraph
3.19), and
(5)
Remove
handset
cradle
(paragraph
3.20).
place handset
aside.
(6) Disconnect
616B
handset
jack
(paragraph
(3) Remove upper housing, if provided,[paragraph
6.09).
(Jack may be removed
or stored
just
3.21(b)].
to right
of ringer.)
(4) Remove
the
cradle
(paragraph
3.20).
(7)
Insert
spade-tipped
end
of
handset
cord
through
hole in the side of the
housing.
(5) Remove
the mounting
screw
and spacer
for
TB1 (Fig. 3).
(8)
Attach
stayband
hook to bottom
of chassis
(Fig. 3).
(6) Move terminal
board
TB1 to gain
access to
the appropriate
terminals
on TB2.
(9)
Route leads
as shown
in Fig. 3.
(7) Disconnect
the appropriate
leads
(Fig.
9H),
(10)
Make connections
(Fig. 9H).
and remove
jack.
(11)
Reassemble
set.
(8) Reassemble.
When
replacing
TB2, locate
its tabs
in the
slots
of the
chassis
before
(12)
SReconnect
battery
and power
unit.
refastening
the TB1 mounting
screw.
(13)
Reprogram
memory,
see Part
5.¢
(9) SRoute
leads
through
wire
guide
as shown
in Fig. 3.
(10)
Reconnect
battery
and power
unit.
J.
Faceplate
(11)
Reprogram
memory,
see Part
5.e
6.11
To replace
a 2872A1-87
faceplate
with
a
2872B1 faceplate.
(1)
Remove
the
2872A1-87
faceplate
by lifting
I.
Handset
up at any of its edges.
6.10
A defective
G15A handset
may be replaced
(2)
Remove
the
four
captive
housing
screws
or changed
to a modular
amplifying
handset
(Fig. 2) from
the
chassis.
(G6BM, G7BM, or G8BM) by unplugging
the H4DU
cord
and
inserting
it into the
new handset.
To
(3)
Use the
four housing
screws
to mount
the
replace
the
G15A
handset
with
a nonmodular
870A1U
upper
housing
to the
chassis
and
amplifying
handset
(G6B,
G7B, or G8B)
proceed
870A1 housing.
The three
parts
should
be held
as follows,
tightly
together
as the
screws
are driven.
(1) BDisconnect
power
unit
from
ac outlet
and
(4)
Place
the two tabs
located
along
the lower
unplug
battery,
edge of the 2872B1 faceplate
in the notches
in
the
lower
side
of the
870AiU-type
upper
Note:
Removal
of ac
and
battery
power
housing.
results
in loss of stored
numbers.g
(5)
Lower
the faceplate
to rest
on the memory.
(2) Unplug
H4DU handset
cord at telephone
set
The spring
clip located
at the top center
of
end.
the
upper
housing
should
retain
the faceplate.
Page 24

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