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. Polarity guards
should be installed only when specified by local
instructions for end-to-end signaling purposes when
battery and ground reversals are encountered. A
•819041971 or• P-90D197 guard assembly must be
separately ordered-and connected as shown in Table
D.
Page 2
3.
MAINTENANCE
3.01
For maintenance information, refer
to
Division
502, section entitled 630, 1630, and 2630
Series Telephone Sets-Common Installation and
Maintenance Information. Individual components
such as dials, keys, ringer, etc., are covered in
sections located in Division 501.
3.02
Do not use solvents to clean plastic parts
of these sets.
Use a damp cloth only. If
discolored, replace part.
BSP 502-612-409-i04_1975-10-Q2.jpg Scanned by Frank Harrell, (Cowboy Frank) Castle Rock, Colorado Feb 04,2012 16:10:55