Northern Telecom DMS-100 Series Maintenance Manual page 138

4-104 Disk drive procedures
Procedure 4-47
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 .
ii) If the problem is not cleared after PCA
replacement and restart, go to step e. Return
the original PCA to its position before
proceeding.
e. Replace the suspect disk drive.
i) See Disk Drive Procedures, Replacing Disk
Drive.
ii) Repeat steps a and b. (If unsuccessful, go to
step f.)
f. Call for technical assistance.
End