© Copyright IBM Corp. 2001 iii
About this supplement
This supplement contains diagnostic and service information for the IBM PC Server
Rack Enclosure and the IBM Rack enclosures:
IBM PC Server Rack Enclosure models:
• Type 9306 19-inch and 24-inch Models:
— 4QS, 4QX, 9QS
— 9QX, 9TS, 9TX
• IBM Rack enclosure models:
— Type 9306 Models 200, 900
— Type 9308 Models 42P, 42X, 42S, 42E, 4SA, 4SB (NetBAY42 Enterprise)
• IBM NetBAY3 enclosure
• IBM NetBAY3E enclosure
This supplement should be used with the related service information in the IBM PC
Servers Hardware Maintenance Manual (part number 70H0751, form number S30H-
2501-01).
Important: This manual is intended for trained servicers who are familiar with IBM
PC Server and IBM Server products.
Before servicing an IBM product, be sure to review “Safety information”
on page 183.
Related publications
The following publications are available for IBM products. For more information,
contact IBM or an IBM Authorized Dealer.