SECTION 529-226-142
3.04
A KS-20419Ll miniature buzzer (6-10 volt
ac) may be installed at any convenient
location within the telephone set. Provide mounting
screw as required or secure buzzer using an existing
screw. Connect BZ and BZ1 mounting cord leads
to (BL) buzzer leads at spare screw terminals or
use D-141688 connectors.
Refer to appropriate
section in Division 501 for detailed 'information on
KS-20419Ll buzzer.
4. CONNECTION INDEX
No changes in wiring other than those
specified in this practice shall be
made.
Table H-Connections For 667B (MD) Transmitter
Table !-Connections For 697 A Subscriber Set,
Headset Adjunct Unit
Table J -Conversion of Pickup Key to Signaling
(Nonlocking)
Table K-Connections For 657B key (Turn
Key)
Fig. 3-657 A Key
Fig. 4-657B Key
Fig. 5-656A Key
Fig. 6-667B (MD) Transmitter
Fig. 7-617 A Key
Fig. 8-59A Lamp Socket (Use 51A Lamps)
Fig. 9-Jack Assembly Connections for 2684AM
and 2685AM-Type Telephone Set
Equipped With Modular Handset and
Handset Cord
Fig. 10-2684- or 2685-Type Telephone Set,
Connections
Fig. 11-Cord and Cable Connections
Page
6
5. MAINTENANCE
5.01
Maintenance of 2684- and 2685-type telephone
sets is limited to cleaning plastic surfaces,
lubricating bearing surfaces of line switch, and
replacing defective key units or components.
(a)
Cleaning:
•
Clean exterior plastic parts using water
dampened KS-2423 cloth
•
Do not
use scouring cleansers on colored
components as this may damage finish
•
If cleaning does not result in desired
appearance, replace component or entire
set.
(b)
Lubricating:
•
Lubricate bearing surfaces of line switch
assembly with KS-14774Ll lubricant when
required.
(c)
Replacing Components:
•
Refer to sections covering keys, dials,
handsets, cords, etc. for replacement of these
components
•
See Part 2, Ordering Guide, for replacement
part numbers
•
To replace modular key
unit:
(1) Remove set housing, faceplate, and mat
by loosening two screws in rear of set.
(2) LQosen screw on each side of key frame
and raise frame to gain access to
terminal boards.
(3) Disconnect spade-tipped leads of key
unit to be removed, if required.
( 4) Loosen captive screws securing key
module to frame and lift key from
frame and connector assembly.
(5) Install new key unit by reversing
procedure (1) through (4).