NEC UNIVERGE NEAX 2000 IPS, Maintenance Manual

Page: 183 / 262

CHAPTER 2 TROUBLESHOOTING
– 173 –
NWA-008847-001 Rev.3.0
a6ch2001.fm
Remedial Action on Each Lamp Status
Continued on next page
CARD NAME
LAMP
STATUS
FAULT
CONTENT
REMEDIAL ACTION
PZ-PW122
(DC/DC PWR) ON lamp is not on Operation power is
not being supplied
Confirm the cable connection of
PZ-PW121 and PZ-PW122.
Turn the PZ-PW122 SW switch
on.
Confirm the lamp indication of
PZ-PW121 all lamps.
If the fault cannot be cleared,
replace the PZ-PW122 card.
PZ-PW135
(DC/DC PWR) MJ lamp is on Major trouble
occurs or resident
system program is
not properly loaded See “FAULT DIAGNOSIS AND
TROUBLESHOOTING”
Page 138
MN lamp is on Minor trouble
occurs or resident
system program is
successfully loaded,
or a station line is
locked out See “FAULT DIAGNOSIS AND
TROUBLESHOOTING”
Page 138
ON lamp is not on Operation power is
not being supplied
Confirm the cable connection of
PZ-PW135.
Confirm the lamp indication of
PZ-PW135 all lamps.
If the PZ-PW135 lamp has abnor-
mal condition, replace the PZ-
PW135 card.
1
2
3
4
1
2
3
FAULT DIAGNOSIS AND TROUBLESHOOTING