Service
Model 8642A/B
Notes:
1. Each module in the HP 8642 has a nine digit module identification code. The first four digits comprise the
module configuration code. When servicing a module, note any changes that apply specifically to its nodule
configuration code.
2.
AH circuit boards are manufactured using a hot air leveled process. These boards require extra care when
replacing components. Refer to General Service Information. paragraph 8-3.
3. Hi and W2 are black wire jumpers.
A1A1
S46
CIRCUIT SIDE
TOP VIEW
H2 } ,Wi
4 5 6
(°)
1 2 3
L
r
Schematic
General Information
8E-102
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