Mitel sx-100 User Manual page 320

SECTION MITL9105/911 O-096-350-NA
(IA)
Check the user 48 Vdc and 90
Vat fuses on the back door of
the SX-200 system, or on the
interconnect card of the
SX-100 system
: .':..
. .
(;:l:-
(3A) Disconnect external equipment
(3B) Replace the fuse with one of
equal value
(3C) If the fuse does not blow
again, connect the external
equipment. If it blows again,
there is an external equipment
problem
-
(4A) Measure all voltages on P18 as
per Figure 705-I
(4B) Activate Night Bell and measure
for 300 ohms continuity on
P18 K and R contacts as per
Figure 705-l
-
Were the fuses
NIGHT BELL TEST
MAPJSO- 705
Issue 3. May 1984
Sheet 1 of 3
YES
AND
Y
Page G-19