Bell System Practices 630 Series Installation And Maintenance Manual page 8

SECTION 502-600-100
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Fig. 11 —810155501 Adapter
(3) Place blocking rings in plungers to be blocked.
(4) Reassemble button retainer and lamp block
assembly.
Fig. 12—Blocking Ring Installed in 590 or 650 Series
Keys
2.21
The 812365948 ( P-23FW4 ) button stop is
used to make an individual pickup key
inoperative on the 635-type key and is installed as
follows.
(1) Remove collar.
(2) Remove button and cap.
(3) Place button stop over lamp (Fig. 13)
Not e: It may be necessary to support the
button plunger before attempting to reassemble
key hutton.
(4) Reinstall button, cap, and collar.
Fig. 13—Button Stop Installed in 635-Type Key
2.22 Any unused key module should be replaced
by a 105B (early production sets) or a 111 B
(current production sets) apparatus blank.
2.23
Insulate and store unused t50&type plugs on
the 111 B apparatus blank as showm in Fig. 14.
Individual 508-type
plugs cm k inslllat~~ and
stored by taping an 814632659 (P-46(%5 I cover
over the contacts of the plug.
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