Installation And Connections - Bell System Practices 911A1 Manual

SECTION 503-200-1 05
Opt i on a l
2.04
separately).
819041708 (P-90Dl70) Guard Assembly.
•
3.

INSTALLATION AND CONNECTIONS

These telephone sets are furnished from
3.01
the factory fully assembled and wired for
bridged ringing. The P1A ringer is shipped from
the factory with the bias spring in the low bias
position. To connect the telephone set, plug the
mounting cord into a 625-type connecting block or
if the existing jack is a 548A or equivalent, use
the 1A converter.
3.02 The internal connections for the 911A1 and
2911A1 telephone sets, for nonkey system
use, are shown in Fig. 2 and
Connections for 1A KTS require no telephone
3.03
set modifications and are the same as Fig. 2
3.
and
If these telephone sets are to be used with
3.04
1A1 or 1A2 key telephone system the set
must be modified by moving the brown (BR) line
switch lead from L2 to G of network.
When needed, a polarity guard can be
3.05
mounted on the two polarity guard bosses
provided in the lower housing adjacent to the
network.
4. REMOVAL OF TELEPHONE
COMPONENTS
When it is desired to discontinue telephone
4.01
service of the 911A1 or 2911A1 DESIGN
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C o m po n e n t (order ed
3,
respectively.
COMPANY-OWN ED
LINE telephone set, remove the telephone
company-owned components that are screwed to
the lower housing or can otherwise be easily
removed.
(1) Unplug the cord from the handset and
remove the handset from the telephone set.
Note:
If the 5C cord reel is removed
disconnect spade-tipped leads at the network.
Do not cut leads at cord reel end.
(2) Unplug the mounting cord from the base of
the telephone set.
(3)
Remove number card retainer and remove
screw located under number card.
( 4) Remove faceplate by pulling faceplate upward
and sliding toward smoked cover, then bending
slightly to pull off past cover.
(5) Loosen seven screws that hold upper housing
to lower housing.
(6) Remove upper housing.
(7) Remove company-owned components.
(8) Reverse procedure to reassemble housings.
Follow local procedures for returning telephone
4.02
company-owned components.
When it is desired to return a set to Western
4.03
Electric for repair, it should be packed using
D-180600 Kit of Parts which contains packing
material and instructions.
Feb 08,2012 18:32:10