Bell System Practices AC1 Reference page 9

caution to prevent the lamp from flying out
of the socket in a dangerous manner.
production hand telephone sets use a 553A tool to
remove the lamp from its vertical position (Fig. 14).
Lamps carried for maintenance reasons
Note:
should be of the 53B-type since both early
and current production handsets accommodate
this type.
Fig. 1 3-Removing Diol Lamp From Current Production
Hand Telephone Sets
To replace a plug ended handset cord (Fig. 15)
5.06
or mounting cord (Fig. 16) use a KS-16750
type releaser.
hold releaser similar to using a paring knife to
apply pressure on the spring clip.
clip has been depressed, pull plug out of jack.
If
transmission troubles are experienced
or the dial is inoperative, replace the
hand telephone set.
SSP S02-303-101-!03_1972-09-09.jpg Scanned by Frank Harrell, (Cowboy Frank) Castle Rock, Colorado Jan 31, 2012 22:00:35
Insert tool in space provided and
When spring
In early
Fig. 1 4-Replacing Dial Lamp in Early Production
Hand Telephone Sets
F ig. 1 5-Removing Handset Cord From the Hand
Telephone Set
To test hand telephone set procede as
5.07
follows:
(a) Make sure all connections are correct and
secure.
ISS 3, SECTION 502-303-101
Page 9