Maintenance Object Repair Procedures
555-233-123
10-1346 Issue 4 May 2002
3. Procedures for a Global MCC (J58890CH):
a. Look to see if any “red” LEDs are “on” on any of the
rectifier modules or the BIU (Battery Interface Unit) located
in the Power Distribution Unit (J58890CH).
b. If the BTW (Battery Temp Warning) LED on the BIU is “on”
check the batteries for a over temp condition
(a)
if temp is
normal
(a)
replace the BIU, If the test still fails replace the
battery in a small battery system. For a large battery
system escalate the problem.
c. If the BIF (Battery Interface Unit) LED is “on” replace the
battery interface unit.
d. If the BNA (Battery Not Available) LED is “on” check the
battery connections including connector J20.
8
(cont’d.)
FAIL
(cont’d.)
e. If you have an alarm and all LEDs are ok (PWR OK and
BOK) on the rectifier modules, and the BIU (Battery
Interface Unit), make sure the BIU and the RM0850
rectifiers are seated properly (plugged in). If the BOK LED
on the BIU is ok use the following information to check the
number of rectifiers serving this cabinet:
Number of carriers Number of rectifiers
per cabinet per cabinet
----------------------------|---------------------------------
1 2
2 3
3 3
4 4
5 4
If the number of rectifiers is correct replace the maintenance
circuit pack in the EPN or PPN.
4. If the test still fails, then follow normal escalation procedures.
10 FAIL This indicates that Error Codes 2 and 8 have occurred. Refer to
these descriptions. Also, refer to the description for Error Code 14
for this test.
12 FAIL This indicates that Error Codes 4 and 8 have occurred. Refer to
these descriptions. Also, refer to the description for Error Code 14
for this test.
Table 10-495. TEST #5 Battery & Battery Charger Query Test — Continued
Error
Code
Tes t
Result Description/Recommendation
Continued on next page
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