HP 400F Operating And Service Manual page 45

Appendix C
'MANUAL
This manual b3�kdating sheet lIIakes this manual appli�able
ImUUmCIII1:0mpc1llent values that dif'
the �'�kda!ing sheet, should be rcpla�\.
Inslrument Seri
617.()().t50 illld below
617.()().tS 1 Ihru 617'(}1 525
7J4-01526thru 734·02775
912'(}2776 thru 912·028 7S
912.(}2876 thru I) 12.(}2975
912'(}2976 thru 912'(}3475
CflANGE NO. I
through
Delete diodes A2CR24
7·2, Figure 7·3, and Tablc 6-1.
BACKDATING CHANGES
Model
Name
Prefil<
from those in the manual, yet
.!ng the part number
Milke Mllnual Chon{)l!s
1.2,3,4,6,8
g
2.3,4,6,
(t,
3,4, H
4.5,6,8
S, 6
6
A2CR:':.i from Figure
C3
t-==-
•
RI3
36�a
C-I
to
earlier
arc not
given
in the Innu31.
Instrument Serial Prehx
All
CIIANGE NO, 2
Paragrilph 5-30(b), change "t 6 V"
Figure 7-3:
Ch:lOgc PREAMPLlFIER schcmati�
�
4.7
R4
487
R�
Re
1070
301
·I7 .6V
R9 RIO
31)50 453
C6
7 5 P F
�
e 7
6 0
®
C9
Rt4
200 576
80.6
R I 6
1.62K
\lodel400F/FL
mSlrlllllents.
listed in
Molke Milnual Chilnges
7
Iu 6
V,"
".
to
Ihe fullowing:
- -,
-
R3
1>-
3.6�K
I
C4
tOO
-21.4'01
C8
.�4.7
RII
2 0 ,
L2
"
-26 V