Northern Telecom BCS35 Replacement Manual page 101

Procedure 10–1
Replacing DSI circuit packs (A12,A13,B12,B13)
Step Description
8 Apply power to the DPP chassis by
resetting the rocker switch in step 4
above.
9 At the maintenance terminal, enter:
>TEST STDBY 00 (cr)
10 Place the active processor unit in
PRIME mode. At the Switch and
Status Panel:
a. Press the A/B Select Switch to
match the active processor.
b. Make the O/P Mode Select
Switch P.
c. Turn the Mode Switch to the
right.
11 If alarm status shows active alarms,
troubleshoot all alarm conditions .
At the maintenance terminal, enter:
TEST ACT (cr)
TEST STDBY (cr)
Note: Make sure any circuit pack option settings are correct before replacing any cards. Incorrect
settings can cause improper performance and produce faultlike symptoms in the DPP.
(continued)
Notes
Wait for start–up activity to
end and the message,
"Software Loaded" to print.
TEST forces diagnostics
which confirm if the faults
were corrected.
Make the active processor the
PRIME processor.
Turn it 45 degrees to the right
and release.
End
DPP Card Replacement Guide BCS35 and up
DSI circuit pack 85