HP Lab Series - Appendix A Manual Backdating Changes

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•
•
APPE"DIX
A _
MANUAL
BACKDATING
CHANGES
Manual
backdating
changes
describe
changes
necessary
to
adapt
this
manual
to
earlier
instruments.
To
adapt
the
manual
to
serial
numbers
prior
to
7Flll
7
inspect
the
following
table
for
your
serial
number
and
then
make
the
appropriate
changes.
For
serial
numbers
7Fll66
and
upcheck
for
inclusion
of
change
sheet.
SERIAL
MAKE
Prefix
Number
CHANGES
7F
1016
-
0892
l
7F
0891
-
0452
l,
2
7F
0451
-
0402
l,
2,
3
6J
0401
-
0251
1,2,3.4
6J
0250
-
0101
1,2,3,4,5
CHANGE
1:
In
replaceable
parts
list
and
on
schematic,
make
the
following
changes:
R99:
Change
to
nominal
value
12M.
A.
B
••
$
Part
No.
0686-1235.
CHANGE
2:
In
replaceable
parts
list
and
on
schematic,
make
the
following
changes:
Cl:
Change
to
lµf
450V
~
Part
No.
0180-1845.
CHANGE
3:
In
replaceable
parts
list
and
on
schematic,
make
A-1
the
following
changes:
VR6:
Delete
R40:
Add,
900.n.
:1%
l/8W,
$
Part
No.
0757-
1099.
Connect
R40
in
place
of
VR6.
CHANGE
4:
In
replaceable
parts
list
and
on
schematic,
make
the
following
changes:
CS:
Change
to
.OOJ.¢
200V,
~
Part
No.
0160-
0153.
C25:
Add,
.001µ.f 200V,
Sprague,
~
Part
No.
0160-0153.
Connect
C25
from
junction
of
R96
and
pulse
transformer
to
base
of
Ql8.
CR19:
Delete
(open).
CR21:
Delete
(open).
R103:
Delete
{open).
Rl04:
Delete
(short),
CHANGE
5:
In
replaceable
parts
list
and
on
schematic,
make
the
following
changes:
R31:
Change
to
!Kn.
:5%
tw.
A.
B.,
~
Part
No.
0686-1025,
5-19-69