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ANY "A" RELAY
IN IAI OR JA2
LINE CIRCUIT
"A"
�sCKTu�
(NOTE
I
I
AI
,1
GRD
L E G END'
HSIA) ·HEADSET JACK A
BSP 502-610-418-i04_1975-03-ll.jpg
Scanned by Frank Harrell, (Cowboy Frank) Castle Rock, Colorado
LS
8
( O - W )
2
CH
20 (G-V)
�6>-+--< 5
!!
INSULATED AND STORED
t
USE 0- 1 6 1488 CONNECTOR OR S PARE TERMINAL
LEADS INVOLVED IN MODIFICATION
t
FROM (0) BINDER
LS
-LINE S WITCH
PU
P ICKUP
-
CH
-CHAINING
Fig. 4-Modificotion for Priority Hold
PU
3)
I
I
2M
L
LG
PU -PICKUP KEY
H-HOLD KEY
LS -Ll NE S WITCH
Fig. 5-Busy Lamp Control Circuit With 6C KTU
1ST HOLD
KEY
7
(W-0)
BUSY LAMP
(NOTE 21
NOTES'
I. (Y-BRI MOUNTING CORD LEAD DESIGNATED BL IS NOT USED.
2. WHEN A LAMP IND ICATOR
51A ( IOV) OR 52A (24V) LAMP
KEY OR
OF
A
ONLY
ARE USED,
AVOID OVERHEATING.
WHEN USING 6C KTU, THE STATION CABLE LOOP MUST BE LIMITED
3.
TO 2511 OR 500 FEET OF 24 GA. WIRE.
Feb 04,2012 14:38:08
ISS 4, SECTION 502-610-418
*
(Y)
24
(0-SK)
6 (
*
(W-0)
7
B
I
R l
IS
USED FOR BUSY LAMP,
MAY B
E USED. IF
TELEPHONE SET
LAMP SOCKET INSTALLED IN A
OV) LAMP S SHALL BE USED
51 A (I
HS(A)
EITHER
A
THE LAMPS
TO
Page 11
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