HP 8642A Operating Manual page 543

Ser v i ce Model 8642A/B
N o t e s :
1. Each module in the HP B642 has a nine digit module identification code. The first four digits comprise the
module configuration code. Hhen servicing a module, note any changes that apply specifically to its module
configuration code.
3. All circuit boards are manufactured using a hot air leveled process. These boards require extra care when
replacing components. Refer to General Service Information, paragraph B-3.
Schematic G e n e r a ! Information
8 K - 1 0 4