DEFINITY Enterprise Communications Server Release 7
Maintenance for R7r
555-230-126 Issue 4
June 1999
Maintenance Object Repair Procedures
9-385CARR-POW (Carrier Power Supply)
9
FAIL
(cont’d.)
4. If the replaced OLS(s) still do not operate properly, then a circuit pack
or a defective telephone connected to a circuit p ack in the affected
carrier could be causing an elec trical load which is preventing the
OLS from operating properly. Unseat all the circuit packs in the
carrier, and reissue the recycle carrier command.
a. If the recycle passes, then the OLSs are healthy, and the problem
is with one of the circuit packs. Reinsert the circuit packs one at a
time. If the status LED shows red after reinserting a circuit pack,
then replace the defective circuit pack. If the status LED still shows
red, then remove the amphenol connector on the back of the slot
containing this circuit pack and reissue the recycle carrie r
command. If the status LED shows green, then the problem is with
one of the telephones or the wiring to one of the telephones on this
slot.
b. If either OLS still shows a red status LED, then check for bent pins
and cable placement in the affected c arrier. There are failures tha t
can occur on the SYSAM and EPN Maintenance circuit pack that
will not
be detected by their respective maintenanc e, but which
will cause many, if not all, environment tests to fail. If many
environment tests are failing, the suspect circuit pack, depending
on the system configuration, should be replaced and the test
rerun.
FAIL DC POWERED SYSTEMS
There is a problem with one or both port carrier power supplies on the
tested carrier.
1. For each port carrier power supply that has all status LEDs OFF,
check the DC input to the port carrier p ower supply at the port carrier
power supply outlet. If there is no DC, then check the appropriate
circuit breakers for the affected port carrier power sup ply. If the circuit
breaker has tripped, reset the circuit breaker. If the circuit breaker
trips again or DC is not p resent at the port carrier p ower supply outlet,
then there is probably a power wiring problem in the cabinet.
2. At this point, DC should be present at the port carrier power supply
outlet. Use the recycle carrier UUC command (where
UUC
is the
appropriate cabinet and c arrier) in an attempt to b ring back the port
carrier power supplies for this carrier. If the test passes, the trouble is
cleared. If the test does not pass, one port carrier power supp ly, or
both, in the tested carrier is defective. If only one port carrier power
supply is defective, then the status LEDs on the healthy port carrier
power supply will light green for a moment. When the recycle test
determines that both port carrier power supp lies are d e fec tive, the
software will turn off power to both the good and defective p ort carrier
power supplies. This will cause the status LED(s) on the good port
carrier power supply to light red.
Table 9-161. TEST #127 OLS Query Test — Continued
Error
Code Test
Result Description/ Recommendation
Continued on next page