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Chapter 4 Maintenance and Troubleshooting
4.1 Maintenance
Maintenance of the Unity 4650 is limited to keeping the chassis clean and
ensuring that cables remain firmly connected. Occasionally wipe the exterior
with a soft, damp cloth to remove any accumulated dust and dirt and check that
cables are securely attached.
The Unity 4650 incorporates security labels over some of the screws. There are
no user-serviceable components within the U4650. Tampering with the secu-
rity labels or opening the unit will void your warranty. If you have any ques-
tions, contact Wegener's Customer Service Department at the address or
numbers listed under Customer Service.
4.2 General Troubleshooting
This section is not intended as an exhaustive list of all possible situations, but a
list of the most common installation problems. Please contact us (see Chapter
5, Customer Service), with any problems you cannot resolve independently.
If you are experiencing any difficulties, first check the LED indicators on the
U4650 front panel. See Table 7: Front-panel LED Indicator Descriptions on
page 45 for details about the LED indicators. Note that during typical opera-
tion, the green CARRIER, TRANSPORT, COMPEL, SERVICES, and
AUTH LEDS should be on.
No output or
If the unit provides no output and neither the LCD nor any LEDs are lit, there
indications
is likely a loss of AC power or the internal power supply has failed. Do the fol-
lowing:
wegener.com
a) Check that AC power cord is firmly connected at both ends.
b) Check that your AC power source is supplying AC power.
c) If both checks a) and b) are okay, contact Customer Service (see
Chapter 5) before returning the unit for service.
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800034-01 Rev. A
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