Wegener Communications UNITY 4600 - Manual (Page 57)

wegener.com 800032-01 Rev. G 51
C
HAPTER
4 M
AINTENANCE AND
T
ROUBLESHOOTING
4.1 Maintenance
Maintenance of the Unity 4600 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 4600 incorporates security labels over some of the screws. There are no
user-serviceable components within the Unity 4600 . Tampering with the security
labels or opening the unit will void your warranty. If you have any questions, 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 Unity
4600 front panel. See Table 3.2: Front-panel LED Indicator Descriptions on page 33
for details about the LED indicators. Note that during typical operation, the green
CARRIER , TRANSPORT , COMPEL , SERVICES , and AUTH LEDS should be
on.
No output or
indications If the unit provides no output and neither the LCD nor any LEDs are lit, there is likely a
loss of AC power or the internal power supply has failed. Do the following:
1. Check that AC power cord is firmly connected at both ends.
2. Check that your AC power source is supplying AC power.
3. If both checks a) and b) are okay, contact Customer Service (see Chapter 5) before
returning the unit for service.
No audio,
video, or ASI
output LEDS: ALARM ON and CARRIER OFF
The Unity 4600 is unable to lock to an RF carrier at the selected RF port:
1. If the first front-panel alarm message is "No RF Signal", then: (1) either the outdoor
antenna LNB is not operating or is not connected to the IRD at the selected RF port;
or (2) the selected IRD RF port has failed; or (3) the IRD receiver card has failed. To
rule out (1), verify that the LNB (and any intermediate line amplifiers) has DC power
and trace the connection from the LNB to the IRD or try replacing the LNB. If a
spectrum analyzer is available, look for the carrier at the L-band intermediate