NPT-1020 Installation and Maintenance Manual
Maintenance
ECI Telecom Ltd. Proprietary
7-5
Table
7-3: General troubleshooting procedures for NPT-1020 power-on
Symptom
Probable cause
Corrective actions
Indicators on MXC panel
FAIL
ACT
MJR MNR
On
Off
Blink Off
Boot selection
non-existent or
hardware fault
Power off and wait a few minutes before
powering on again.
Wait a minute at most. The ACT indicator
should flash and the FAIL indicator should
be off. If not, replace the NPT-1020 unit.
On
Off
Off
Off
BIT of SDRAM failed
Power off and wait a few minutes before
powering on again.
Wait a minute at most. The ACT indicator
should flash and the FAIL indicator should
be off. If not, replace the NPT-1020 unit.
On
Off
On
Off
Boot code not found by
boot selection
Power off and wait a few minutes before
powering on again.
Wait a minute at most. The ACT indicator
should flash and the FAIL indicator should
be off. If not, replace the NPT-1020 unit.
On
Off
Off
Off
BIT of SDRAM failed
Power off and wait a few minutes before
powering on again.
Wait a minute at most. The ACT indicator
should flash and the FAIL indicator should
be off. If not, replace the NPT-1020 unit.
On
Off
Off
On
BIT of Flash failed
Power off and wait a few minutes before
powering on again.
Wait a minute at most. The ACT indicator
should flash and the FAIL indicator should
be off. If not, replace the NPT-1020 unit.
On
Blink Blink Blink Illogical parameters,
such as the ID or
gateway
Reset the card. When the ACT indicator is
off and the MNR indicator flashes after
reset, modify the incorrect parameters
using the Boot Configuration Tool.
After incorrect parameters are modified
correctly, reset the card again. The ACT
indicator should flash and the FAIL
indicator should be off after resetting.
If the FAIL indicator remains on, replace the
NPT-1020 unit.