Allen-Bradley 1394 - Page 190

Publication 1394-5.0 — May 2000
9-24 Troubleshooting
4. Check the circuit resistance of the two DCLM fuses by
connecting the probes of an ohm meter as described in the table
below. Refer to Figure 9.5 for the connector locations.
Figure 9.5
Checking for a Blown Fuse
Connect the
red lead to:
Connect the
black lead to:
If the meter
reading is:
The 1394-DCLM fuse is:
Top bus (DC+)
power connector
Left front
socket
Open (high ohms)
Blown. Replace the
1394-DCLM.
Short (low ohms) Good.
Bottom bus (DC-)
power connector
Right front
socket
Open (high ohms)
Blown. Replace the
1394-DCLM.
Short (low ohms) Good.
Slide mechanism
Top bus (DC+)
power connector
Bottom bus (DC-)
power connector
Left front
socket
Right front
socket
1394-DCLM