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7310 Installation and User's Guide
6. Trouble Shooting
The 7310 IFL was tested before it left the factory. However if you are
experiencing difficulties consult the list below for possible solutions. If your
system is still experiencing problems, attempt to isolate and identify the
malfunctioning unit.
Table 7 - Trouble Shooting
PROBLEM
1. Laser LED not on
2.
Lack of RF signal
present at Receiver, yet
optical power is
functioning.
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POSSIBLE CAUSE
1. No DC power to the unit. Possible power
supply problem or AC power input problem.
Check the fuse.
2. Verify LSRI monitor is -4.8 and -4.2V. If not,
laser may have overheated. Disconnect power
or remove plug in and allow to cool. Try again
with better airflow.
3. If an optical power meter is available, measure
the optical power out of the transmitter. The
power should be 0.4 mW to 1 mW. If an optical
power meter is not available, then use another
receiver to determine if there is optical power
emerging from the transmitter (use the 5 meter
jumper cable). If there is no optical power, then
the transmitter unit is malfunctioning.
If any or all the above are not within the
guidelines, the transmitter unit is faulty.
1. If the unit has an LNB drive option, verify
that the correct LNB bias is coming down the
center of the RF connector at the transmit
site.
2. Verify that the dish is pointed and correctly
receiving satellite signals.
Conclusion: If signal still not present then
Transmitter input stage amplifier is defective.
Contact Foxcom.
Document No. 93-005-39-A1
Trouble Shooting
38
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