5-Module Frame, F-CU5, F-CU5P
33
Document no. M1125636-05
4 Troubleshooting
Figure 14 Monitor troubleshooting flowchart, page 1
Set Stby-switch to stby,
Remove all modules,
check cables
STBY -LED
lit ?
Keyboard trouble. See the
Keyboard Slot for
troubleshooting.
Monitor not functioning
Power cord
connected? Needed
interconnecting cables
connected?
f-cu5_trbl_frameslot1.vsd
ON/STBY
switch 'ON'
Keyboard connected?
Display connected and
powered?
No
No
Connect and check
OK?
Yes
No
OK?
Disconnect and
reconnect the power cord
OK?
Connect power cord
and interconnecting
cables
No
Yes
Yes
The power supply unit was
shut down by instant over
voltage in the mains.
Yes
No
The problem was caused by
loosen cable(s)
Yes
The problem was caused by
loosen power cord
Yes
Mains
voltage in correct
operating
range?
The problem is in local mains
voltages
No
Yes
N-AC fan
running?
Is the
fan properly
connected
?
No
N-AC problem
Connect an other N-AC
Yes
No
Connect the fan, check
cables and connections
Yes
Continue to next page
No
To Next Page
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