Northern Telecom DMS-100 Series Maintenance Manual page 116

4-82 Disk drive procedures
Procedure 4-40
Disk drive hardware error messages - procedures
297-1001-537 Standard 01.02 December 1993
(continued)
i. See Printed Circuit Assembly Replacement in
297-1001-536: DPP Card Replacement Guide .
Switch back to processor of new PCA.
ii. If the problem is not cleared after PCA
replacement and restart, go to step b. Return the
original PCA to its position before proceeding.
b.Replace the CPU PCA in slot 1 of the same chassis
as step a.
i. See Printed Circuit Assembly Replacement in
297-1001-536: DPP Card Replacement Guide .
ii. If the problem is not cleared after PCA
replacement and restart, go to step c. Return the
original PCA to its position before proceeding.
c.Replace the Disk Drive.
i. See Disk Drive replacement procedure 4-8.
ii. If the problem is not cleared, go to step c.
c.Call for technical assistance.
End