Northern Telecom Meridian SL-1 Reference Manual page 13

Chart 2-3
PE2, PE3, PE4 or PE5 breaker trips
St ep Ac ti on
1 Reset breaker.
2 Check for extinguished LED
on QPC706 pack associated
with tripped breaker and
replace pack. Reset breaker.
3 Unseat all circuit packs on the
shelf except the QPC706
pack. Reset breaker.
4 Insert circuits one-at-a-time
until breaker trips.
2-Mb/s Remote Peripheral Equipment
Fault detection and locating 2-9
Ver if i cat io n
If breaker does not trip, fault is
cleared.
If breaker does not trip, fault is
cleared.
If breaker trips, replace power
cabling to shelf at rear of cabinet.
If breaker still trips when reset,
replace the QUX20 unit.
Last circuit pack inserted is
defective. Replace.
Appendix 1 to 553-2741-500