HP 5501A Operating And Service Manual page 47

Figure 7-77A. A7 Control Board Component Locator
A
F
H
J
N
P
R
S
A7 Control Board Integrated Circuit Chart
Part
No.
HP Vendor
U1, U7
U2,U3,U5
U6, U9
U4
U8
U10,Ull
U12
Pin 14
As shown on
schematic
Pin 14
Pin 14
Pin 16
As shown on
schematic
Pin 7
As shown on
schematic
Pin 7
Pin
7
Pin 8
As shown on
schematic
1820-0587
1826-0065
1820-0511
1820-0583
1820-0730
1820-0430
74L10
LM311
7408
74L00
96L02
LM309K