Compaq Deskpro 386 - Desktop PC, Maintenance And Service Manual

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Chapter 7, Removal and Replacement Procedures
Addendum 108431-001 (11-88) to
Manual No. 108033-003
To replace a full-height mass storage device in
drive positions B or C, follow these steps:
IMPORTANT
When the drive is ordered as a spare part, it
comes formatted for use with one of two
ESDI Fixed Disk Drive Controller boards.
□
ESDI Fixed Disk Drive Controller
Board Assy. No. WD1007AWAH,
which is a 1:1 interleave and drive
type 35.
□
ESDI Fixed Disk Drive Controller
Board
Assy. No. WD1005WAH,
which is a 3:1 interleave and drive
type 25.
Examine the label on the fixed disk drive to
determine the controller board for which it was
formatted. If the installed controller board is
not the board for which the fixed disk drive was
formatted, you must reformat the fixed disk
drive. Use the UNCONDITIONAL FORMAT in
ADVANCED DIAGNOSTICS Version 5.04 or later.
Failure to reformat can result in the fixed disk
drive not operating with the installed controller.
After performing an UNCONDITIONAL FORMAT,
perform SURFACE ANALYSIS to detect and mark
any surface defects.