IBM Aptiva Hardware Maintenance Manual page 140

Introduction
This chapter contains system board layouts and jumper settings. It is useful
when you are asked to measure voltages. Use this information to help you
locate parts such as electronic boards, connectors, pin numbers, and test
points. This chapter also contains jumper settings for the hard disk drive, CD-
ROM (compact disc-read-only memory) drive, and the connector information
for modem adapter card.
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