T-VIPS CP525 cMux, User Manual

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Preventive Maintenance and Fault-finding 259
ID: um_tsmux CP525 cMux User’s Manual Rev. 5.20.12 (3944)
• Confirm that the equipment hardware configuration is suitable for the purpose and
that the unit has been correctly connected.
• Confirm that inappropriate operator action is not causing the problem, and that the
equipment software set-up is capable of performing the required functionality.
• Check that the fans are unobstructed and working correctly.
When the fault condition has been fully investigated, and the symptoms are identified, proceed
to fault-finding according to the observed symptoms. If the fault persists, and cannot be rectified
using the instructions given in this manual, contact T-VIPS Customer Support. Switch off the
equipment if it becomes unusable, or to protect it from further damage.
11.2.2 PSU LED not lit / power supply problem
Power fault-finding
1. Check the Power LED.
− Is the LED unlit, but the unit still working properly?
Yes
The Power LED itself is probably at fault - Call a Service Engineer.
No
Proceed to next step
2. Check the Power Source.
− Connect a piece of equipment known to work to the power source outlet. Does it
work?
Yes
The problem lies within the CP525 or the power cable. Proceed to next step.
No
The problem lies with the power source. Check building circuit breakers, fuse
boxes and the source outlet. Do they work? If the problem persists, contact
the electricity supplier.
3. Check Power Cable.
− Unplug the power cable and try it in another piece of equipment. Does it work?
Yes
The problem lies within the CP525. Call a Service Engineer.
No
The problem lies with the cable. Replace the cable.
The PSU does not have any internal user changeable fuses.