0
g
g
a
E"l
0
gg
a B
4R
4T
4H
L4
LC
gg
lR
lT
lH
Ll
LC
[QJ[QJ[QJ[QJ[Q]
!R
2T
IH
Ll
LC
EJ El
[Q][Q][QJ[Q][Q]
g g
B El
0
g g
BEl
0
Fig. 3--Terminal Board for the 636B Key
Fig. 4-P-12A858 Blocking Ring, Installed
2.09
The exclusion switch assembly must meet
the following requirements:
(a) The exclusion plunger should remain in the
oriented position when pulled up
to
the full
extent of its stroke. It should hold in position
ISS 3, SECTION 502-500-120
when 50 grams of force or less are applied to
the center of the plunger.
(b) The plunger should release from its upper
(locked) position when the handset is dropped
from a distance of 114-inch above the plunger.
2.10
The P-25Ell8 exclusion switch assembly
terminates in individual and wafer strip
spade-tipped conductors (Fig. 7). This allows
adaption of the exclusion feature to any one of
the pickup buttons.
2.11
Exclusion switch connections are found in
sections covering the appropriate telephone
set.
Buzzers
2.12
A KS-8109L2 or equivalent buzzer may be
mounted to the bracket provided with a
H1-type ringer of the set (Fig. 8).
2.13
A second buzzer can be installed on a 70-type
bracket (ordered separately) mounted on
top of the H1-type ringer coil in nonexclusion switch
equipped sets.
2.14
A KS-20419L1 buzzer (10 volt AC only) may
be mounted in any convenient location (screw
must be provided). •In current production 565-
and 2565-type sets (except the GK), this buzzer is
furnished from the factory and mounted on the
left dial mounting bracket screw
.•
Mounting Cords
2.15
Mounting cords on 540-type and earlier models
of the 560-type telephone sets have spade-tipped
leads and terminate at 44A connecting blocks.
2.16
Plug-ended mounting cords terminate at 66E3
or 66E4 connecting blocks or connect to
A20B or A25B connector cables. A B20A or B25A
connector cable can be used to extend mounting
cords where a plug is needed on the equipment
end.
2.17
The set ends of mounting cord conductors
are furnished with individual spade tips or
wafers for terminating on 588-, 589-, or 636-type
keys (Fig. 9, 10, and 11).
Page 3
SSP
502-500-120-i03_1974-11-03.jpg Scanned by Frank Harrell, {Cowboy Frank) Castle Rock, Colorado Feb 02, 2012 18:57:41
