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BSP 502-541-407-i0�_1975-12-03.jpg Scanned by Frank Harrell, (Cowboy Frank) Castle Roc<, Coloraao Sep 30, 2·012
TABLE A
PICKUP-SIGNAL KEY CONVERSION
564HK/HL
CONVERTIBLE
KEY
OPTIONS (NOTES)
BR
HPPPPP
M
HPPPPS
M
HPPPSS
M
HPPSSS
X
X
HPPP*P*S*
HPP*P*P*S*
X
* These pickup key options are used on private
or intercommunicating lines w i th the signal key
common to each line. The signal key, under con
trol of the line switch, will operate the signal
circuit of each line when associated pickup key
is depressed. Use S lead on 2nd, 3rd, or 4th
pickup key as required.
Notes:
1.
All convertible key positions are arranged
in the factory as pickup positions. To con
vert a key position from pickup (locking)
to
signaling
(nonlocking ) ,
811218924 (P-12A892) screw detail from
plunger at the key position to be converted.
Make necessary connection changes as shown
in Table A. To convert a key position from
nonlocking to locking, insert 81121892 4
(P-12A892) screw detail.
2. When keys are converted for signaling, the
S lead of key involved provides the signal
circuit and SG lead provides the common
signal ground.
ISS 4, SECTION 502-541-407
KEY LEADS
Y-BR
S-R
BR-BK
M
M
X
M
M
SG
M
SG
X
X
M
SG
M
5H
X
5H
remove
the
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