HP 3320A Operating And Service Manual page 171

Model 3320A/B
8-21. CHANGE 9, FOR SERIAL NUMBERS 1138A-
00275 AND BELOW (3320Aj, 1319A-00690 AND
BELOW (3320B).
8-22. Make the following changes:
a. In Table 6-1 delete A3C26 and A3R85. Change
A3R55 to R: fxd 8060 D 1% 0698-4473.
b. In Figure 7-19 Change A3QI1 and A3Q12 circuitry
as follows:
-5.9/ We
Section VIII
R55
8.06K
C 10 R 56
15~
10K
-15V
8-3