Bell System Practices 2682 Service Manual page 19

TABTE
E
8r904re7r (MD) (P-9ODI97)
(IIAD)
AND
840364376
POTARITY
GUARD CONNECTIONS
tEAD
coroR
RE'UOVE
FROM
CONNECT
TO
Line
Switch
w
c:r.
st
Headset
Jack BK-S
Dial
G-W
BK
RR*
rf
Polarity
Guard
w c*
G
RR*
* Network terminal.
f
Polarity guard terminal.
Notes:
1
Polarity guards shall
be
installed only when
specified
by
local instructions
for
end-to-end
signaling
when
battery and ground reversals may be
encountered.
2
The
polarity guard is
located
at the right
and rear
of
the
TOUCH-TONE dial.
3.
The
840364376
polarity
guard
comes
in
the
D_191006
Kit of parts.
It
is to
fs
installed
on
any
surface having an area equivalent to the adhesive backing.
tss 6,
sEcTtoN 502-6t2-425
Poge
19
19
PoEes