Chapter 5 - Troubleshooting and Diagnostics HCD-E1
Installation & Operation Manual
5-10 Status Indications and Alarms 01/01/01 08:15
Table 5-1 HCD-E1 Alarm Buffer Messages (Cont.)
LCD Message Terminal Message Alarm
Number
Cause Corrective Actions Alarm
Type
SYNC LOSS:LP1*
SYNC LOSS:LP2*
SYNC LOSS:LP1*
SYNC LOSS:LP2*
26 Loss of synchronization on the
specified HDSL line.
1. Check the corresponding HDSL line.
2. Perform self-test on the two units and replace
the one that fails the self-test.
ON/OFF
TIMING OVERFLOW TIMING OVERFLOW 36 The data line recovery circuits
cannot recover the data line
clock, because its frequency is
not within the supported range.
1. Check the equipment providing the data signal,
and make sure its clock source is stable.
2. Perform the power-up self-test and replace
HCD-E1 if it fails the test.
ON
Table 5-2 H-RPT Alarm Buffer Messages
Alarm Message Alarm
Number
Cause Corrective Actions Alarm
Type
HRPT_LTU SIGNAL LOSS:LP1
HRPT_LTU SIGNAL LOSS:LP2
01 Loss of input signal on the
specified HDSL line at the LTU
side of H-RPT.
1. Check the corresponding HDSL line.
2. Perform a self-test on the unit configured as remote and
replace the unit if it fails the self-test.
3. Replace H-RPT.
ON/OFF
HRPT_NTU SIGNAL LOSS:LP1
HRPT_NTU SIGNAL LOSS:LP2
02 Loss of input signal on the
specified HDSL line at the NTU
side of H-RPT.
1. Check the corresponding HDSL line.
2. Perform a self-test on the unit configured as central and
replace the unit if it fails the self-test.
3. Replace H-RPT.
ON/OFF
HRPT_LTU SYNC LOSS:LP1
HRPT_LTU SYNC LOSS:LP2
03 Loss of synchronization on the
specified HDSL line at the LTU
side of H-RPT.
1. Check the corresponding HDSL line.
2. Perform a self-test on the unit configured as remote and
replace the unit if it fails the self-test.
3. Replace H-RPT.
ON/OFF
