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GE Information
D.20 RIO - HARDWARE USER’S MANUAL
REPLACING THE FUSES
CHAPTER 7: SERVICING THE D.20 RIO
Replacing the fuses
There are three fuses within the D.20 RIO, marked on the circuit board as
F1
,
F2
, and
F3
.
Two different types of fuses are used (see Table 18, “Fuse part numbers,” on page 60):
•
F1
and
F2
: 3.5 amp SMD time-lag. Both of these fuses are used on the D.20
connections. Fuse
F1
is for power and fuse
F2
is for return. If either of these fuses fails,
verify your D.20 link wiring to ensure a short does not exist.
•
F3
: 1.5 amp SMD time-lag. This fuse is for the D.20 RIO itself. If this fuse fails, ensure
that a correctly rated power supply is connected and that it is operating correctly.
The fuse part numbers are;
Table 18: Fuse part numbers
Ensure that you install a replacement fuse of the correct type and rating. Failure to do
so may impair the safety features of the D.20 RIO.
Figure 10: D.20 RIO fuse locations
TIP
You can use a pair of needle-nose pliers to extract the failed fuse and install a replacement
fuse in the surface-mount holder.
Fuse
GE Part Number
Manufacturer
Manufacturer’s Part
Number
F1, F2
940-0038
Littlefuse Inc.
015703.5 DRT
F3
940-0037
Littlefuse Inc.
015701.5 DRT
D.20 RIO printed circuit board
Power
D.20 B
D.20 A
RS-232
F1 F2 F3
Et
he
rn
et
Et
he
rn
et
System LEDs
Fr
on
t ›
‹ R
ear