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9-7
D-620003-0-20 Rev J
CONFIDENTIAL
Troubleshooting
{MF24}Frequency band not programmed
Use AdminManager to program the frequency band.
{MF25}Hardware failure (DL Pilot too
low)
Cycle power once. If fault persists, replace the MH.
{MF26}Hardware failure (DL Pilot too
high)
Cycle power once. If fault persists, replace the MH.
{MF27}Failed to perform system test (Test
tone too high)
Unable to perform system end-to-end test, replace the Main Hub when possi-
ble.
{MF28}Failed to perform system test (Test
tone too low)
Unable to perform system end-to-end test, replace the Main Hub when possi-
ble.
{MF29}Hardware failure (DL Path)
Replace the Main Hub.
{MF30}Hardware failure (UL Path)
Re-run system test. Swap first two EHs and re-run system test. If fault persists,
replace the MH when possible.
{MF33}Port 1 UL RF path has excessive
gain
If fault common to more than one port, replace the MH. If only one port has the
fault, try another MH port. If no fault is reported, flag the previous port as unus-
able and replace the MH when possible. Otherwise, replace the EH.
{MF34} Port 2 UL RF path has excessive
gain
If fault common to more than one port, replace the MH. If only one port has the
fault, try another MH port. If no fault is reported, flag the previous port as unus-
able and replace the MH when possible. Otherwise, replace the EH.
{MF35} Port 3 UL RF path has excessive
gain
If fault common to more than one port, replace the MH. If only one port has the
fault, try another MH port. If no fault is reported, flag the previous port as unus-
able and replace the MH when possible. Otherwise, replace the EH.
{MF36} Port 4 UL RF path has excessive
gain
If fault common to more than one port, replace the MH. If only one port has the
fault, try another MH port. If no fault is reported, flag the previous port as unus-
able and replace the MH when possible. Otherwise, replace the EH.
{MF37} Port 1 UL RF path loss is too high
The uplink RF loss is above the recommended minimum. If codes MS13-MS16
are also present, the fiber is the most likely problem. Clean the fiber ports and
connectors. Ensure that the fiber connector is correctly seated.
If codes MS13-MS16 are not present, disconnect both downlink and uplink
fiber at the Main Hub. Wait 10 seconds, then re-connect downlink and uplink
fiber.
If fault common to more than one port, replace the MH. If only one port has the
fault, try another MH port. If no fault is reported, flag the previous port as unus-
able and replace the MH when possible. Otherwise, replace the EH.
{MF38} Port 2 UL RF path loss is too high
The uplink RF loss is above the recommended minimum. If codes MS13-MS16
are also present, the fiber is the most likely problem. Clean the fiber ports and
connectors. Ensure that the fiber connector is correctly seated.
If codes MS13-MS16 are not present, disconnect both downlink and uplink
fiber at the Main Hub. Wait 10 seconds, then re-connect downlink and uplink
fiber.
If fault common to more than one port, replace the MH. If only one port has the
fault, try another MH port. If no fault is reported, flag the previous port as unus-
able and replace the MH when possible. Otherwise, replace the EH.
Table 9-1
Faults Reported by the Main Hub (continued)
