SECTION 502-580-405
D48J
G3-TYPE
4228A OR
C4 -TYPE
LINE
SWITCH
7
-
T
Y
P
E
(
M
D
)
MTG CORD
HANDSET
425E NET.
RINGER
(NOTES 4 AND 6)
OR
9-
TYPE
DIAL
(NOTES 1,2,
F
3,5,
7)
TIP
(G)
(BK)
RR
K
(R)
0
RING
(R)
A
(Y)
AI
(BK)
(BK)
(II)
R
(R)
GN
NOTES:
I. SET WIRED FOR IAI OR IA2.
TO
PROVIDE SEPARATE RINGER MOVE:
FROM
TO
e
(BK) RINGER LEAD
L1
e
(R) RINGER LEAD
G
(G)
(II)
(BR)
(Y)
(BK)
(R)
INS\ILATE AND STORE (BR) AND
(Y)
LINE SWITCH LEADS WHEN USING TERMINALS L1 AND G FOR
TI
E
PO
I
NTS BETWEEN RINGER AND MOUNTING CORD LEADS.
2. FOR MANUAL SERVICE:
(G) OR
SEPARATE RINGER- MOVE MOUNTING CORD CONDUCTOR (G) FROM TERMINAL F T O RR
ON NET WORK.
IA
I
OR IA2 KTS-
MOVE MOUNTING CORD CONDUCTOR (G) AND
(BK) RINGER LEAD F ROM TERMINAL
F TO RR ON NETWORK.
REPLACE
Dl
AL WITH APPROPRIATE APPARATUS BLANK.
(BL)
(BL)
(II)
(II)
3,
WHEN BOTH FEATURES ARE REQUIRED, REPLACE 4-CONDUCTDR MTG CORD
WITH 6-CONDUCTOR IITG CORD AND
OP
ON
CONNECT (Bll
AND
(W) LEADS TO (BK) AND (R) RINGER LEADS, RESPECTIVELY. USE D-161488 CONNECTORS
OR
SPARE TERMINALS .
4.
TO P
REV
E
N
T FALSE HOLD CONDI TION WHEN HANDSET
IS
RESTORED, SWITCH
CONTACTS d,e
MUST BREAK
BEFORE b,c BREAK,
5. CONNECTIONS FOR C48 RINGER SHOWN. SETS WITH C4A RINGER WIRED A S FOLLOWS:
e
(BK)
TO F
e
(S) TO K
e
(S-RI TO A
e
(R) TO L2
6. LINE SWITCH SEQUENCE, HANDSET REMOVED.
(II
be
MAKES
(31
gf
BREAKS
(2)de MAKES
7.
TO SILENCE RINGER PERMANENTLY DISCONNECT (8K) RINGER LEAD INSULATE A N D STORE.
OP
-DIAL PULSE CONTACT
ON-DIAL OFF-NORMAL CONTACT.
Fig. �Current 500L/M Telephone Set, Current Connections for Sets not Equipped With Terminal Stri,.
Page 4
BSP 502-580-405-i03_1975-ll-04.jpg Scanned by Frank Harrell, (Cowboy Frank) Castle Rock, Colorado Feb 04,2012 12:10:35
