Maintenance - AT&T 2634DA Service Manual

SECTION 502-612-409
2.09
For use with 4-type speakerphone, refer to
Section 512-730-400.
2.10
When required, these sets may be equipped
with a polarity guard.
should be installed only when specified by local
instructions for end-to-end signaling purposes when
battery and ground reversals are encountered.
•819041971 or• P-90D197 guard assembly must be
separately ordered-and connected as shown in Table
D.
Page 2
BSP 502-612-409-i04_1975-10-Q2.jpg Scanned by Frank Harrell, (Cowboy Frank) Castle Rock, Colorado Feb 04,2012 16:10:55
3.
3.01
Series Telephone Sets-Common Installation and
Polarity guards Maintenance Information.
such as dials, keys, ringer, etc., are covered in
sections located in Division 501.
A
3.02
discolored, replace part.

MAINTENANCE

For maintenance information, refer
502, section entitled 630, 1630, and 2630
Do not use solvents to clean plastic parts
of these sets.
Use a damp cloth only.
to
Division
Individual components
If