Operating instructions

Home > SPR1100 Handbook > Looking After The Unit > Troubleshooting > Basic Fault Scenarios > Unit Not
Working
Unit not Working
If the unit appears not to be working (e.g. Status LED unlit), fault-find the problem as
detailed in the following table.
Step
Action
If Result of Action is
Yes…
If Result of Action is
No…
1
Is the unit still
working but the
LED/LCD display
inactive?
If the unit is clearly
working normally then the
LED/LCD Display itself is
probably at fault. Call a
Service Engineer.
Proceed to next step.
2
Check Power
Source. Connect a
known, working
piece of
equipment to the
power source
outlet. Does it
work?
The problem lies within
the unit or power cable.
Proceed to next step.
The problem lies with
the power source.
Check building circuit
breakers, fuse boxes,
etc. If problem
persists, contact the
electricity supplier.
3
Check Power
Cable and Fuse.
Unplug the power
connector from
the unit and try it
in another piece of
equipment. Does it
work?
The problem lies within
the unit. Proceed to next
step.
The problem lies with
either the cable itself,
or with the fuse in the
plug. Replace the fuse
or try to substitute
another cable.
4
Check PSU Module
and Fuse. Ensure
the power
connector is
unplugged.
Remove the fuse
from the rear
panel connector
and inspect it. Has
the fuse blown?
Replace the fuse with one
of the correct type and
rating (see Technical
Specification > Power
Supplies). If the PSU still
does not work, unplug the
power cable and call a
Service Engineer.
Possible problem with
the PSU module. Call a
Service Engineer.
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