Northern Telecom BCS35 Replacement Manual page 158

142 56K Crossover circuit pack
Procedure 15–1
56K XOVR circuit pack replacement
Step
18
Notes:
Note 1: Verify the cable markings (identification) or attach labels to the cables as they are removed to facilitate
replacement in the correct positions.
Note 2: Make sure the jumpers/straps are set the same as the ones on the circuit assembly to be replaced.
Note 3: When replacing the screws, align carefully before tightening to avoid stripping. Tighten the screws,
alternating until all are equally tight. Do not "cinch down" any one screw until all are properly aligned; no binding
or force needed to turn.
297-1001-536 Standard 01.03 August 1996
Description
b. Make the O/P Mode Select
Switch P.
c. Turn the Mode Switch to the
right.
Test the polling link(s) see if they are still
failing.
(continued)
Notes
Make the active processor the PRIME
processor.
Turn it 45 degrees to the right and
release.
End