INTRODUCTION
I-E96-406A
4 - 1
SECTION 4 - REPAIR/REPLACEMENT PROCEDURES
INTRODUCTION
This section explains the replacement procedures for the
NTAM01 Analog Master Termination Unit. No special tools are
required to replace the module.
REPLACEMENT PROCEDURES
If an NTAM01 unit is faulty, replace it with a new one.
Do not
try to repair the module. Replacing components may affect per-
formance and certification.
To replace a termination unit:
1. Turn OFF the INFI 90 cabinet power.
NOTE: The I/O power supplies providing the power to the termina-
tion unit may not be located in the same cabinet as the termination
unit. Make sure to turn OFF power to any external supplies providing
I/O power.
2. Pull the master modules out of the MMU backplane.
3. Label and remove all cables connected to the termination
unit.
CAUTION
Remove modules from their module mounting unit slots before
installing or removing a cable assigned to that slot. Failure to
do so could result in damage to the module.
ATTENTION
Retirer le module de son emplacement dans le chassis de
montage des modules avant d'installer ou de retirer un câble
assigne a cet emplacement. Un manquement à cette procédure
pourrait endommager le module.
CAUTION
If input or output circuits are a shock hazard after disconnect-
ing system power at the power entry panel, then the door of the
cabinet containing these externally powered circuits must be
marked with a warning stating that multiple power sources
exist.
ATTENTION
Si des circuits d'entree ou de sortie sont alimentes a partir de
sources externes, ils presentent un risque de choc electrique
meme lorsque l'alimentation du systeme est debranchee du
panneau d'entree l'alimentation. Le cas echeant, un avertisse-
ment signalant la presence de sources d'alimentation multiples
doit etre appose sur la porte de l'armoire.
