Nortel DMS 100 Series Maintenance Manual page 353

3
To inspect the aisle end bulb, turn the power switch for the cooling unit to the
off position.
If aisle end bulb
lights
does not light
4 Remove the bulb cover or bulb frame casing. Use the case as a hook to pull
the clear plastic bulb ejector. Go to step 5.
5 Replace with new bulb.
6 Attach bulb cover or bulb frame casing. Go to step 8.
7 Use the Card Replacement Procedures section in this document to replace
the Alarm Module (NTRX41) circuit card. Return the NTRX41 circuit card to
Northern Telecom (Nortel) for bulb replacement. Go to step 8.
8 To power up the cooling unit, place the cooling unit power switch in the ON
position.
9 The procedure is complete.
DMS-100 Family Remote Switching Center Multi-Access Maintenance Manual XPM11 and up
RSC-M routine maintenance procedures
Inspecting and changing bulbs
DANGER
To prevent overheating
Do not leave the cooling unit fans off for more than 30 min.
Do
step 8
step 4
12-11
(end)