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PRODUCT
HISTORY
CHAPTER
[1] HISTORY
This is the second printing of service information for the 3 1/2-inch Winchester Disc Drive as it applies to
the HP 9153/54 A and B products.
This section of the manual is complete and applies to all 9153/54
A and B units now in the field.
Ap-
plicable serial numbers are as follows:
HP 9153A -
serial numbers prefixed by 2450A and higher.
HP 9154A -
serial numbers prefixed by 2451A and higher.
HP 9153B -
serial numbers prefixed by 2633A and higher.
HP 9154B-
serial numbers prefixed by 2634A and higher.
[2] SERVICE NOTE HISTORY
The service notes issued against the HP
9153/54
A and B products are provided
in Chapter
10 of this
manual.
The following tables show the service notes that have been issued at the time of this printing.
11-1
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