EchoStar 4 - Manual (Page 22)

Troubleshooting
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3.3 IRD Troubleshooting
The IRD that was provided with your satellite television service
may also be the cause of less-than-ideal operation. First check the
IRD’s configuration to ensure it is set up for the desired
programming. In the case of a faulty IRD, refer to your IRD
user’s manual for service and warranty information. If the IRD is
both configured properly and fully functional, contact your local
KVH dealer or service center for assistance.
3.4 Antenna Gyro and LNB Faults
The TracVision 4 Technical Manual provides detailed instructions
for authorized service personnel who may be required to replace
the antenna’s gyro or Low Noise Block (LNB).
Contact your local
KVH dealer or service center for assistance.