User's Manual

EX7100 Technical Manual - Module Descriptions
©1999 Exicom Technologies (1996) Ltd 7-6 Issue 3 - May 2001
Figure 7.5: Power Supply Fault Diagnostic Tree
Begin
DC i/p present
on Terminal
Rear Panel?
Check DC i/p
supply, external
Fuse, Wiring &
Connections
Switch on EX7100 Terminal
PSU Meter
Readings ok as
per Table 7.1?
PSU Module
appears to be
fault-free
Remove EX7100 Bottom Cover
Refer to
Caution
notes
Does internal Relay
operate with Rear
Panel Switch?
Replace PSU module
Voltages on all
internal Fuses
ok?
Any/all internal
Fuses blown?
PSU appears
fault-free,
Suspect that
another Module
is faulty
Yes
No
Yes
No
No
Yes
No
No
Yes
Replace any blown Fuses
Yes
Finish