Manual Changes - HP 3400A Operating And Service Manual

f
MANUAL CHANGES
Model
3400A
RMS VOLTMETER
Manual
Part
No.
03400-90008
| New
or Revised
Item
ERRATA:
Page
5-3,
Paragraph 5-12 d and
f.
Change reference
from
0.707
volts to
0.707
millivolts.
Page 6-5/6-6, Figure
6-2.
Change value of
C403
to
0.1
uF.
Page
6-9/6-10, Figure 6-4.
Change
Part
No. on A7
schematic
to
03400-66510.
Page
7-3,
Table
7-1.
Change C403
to Part
No. 0160-0269,
C:fxd
0.1
uF 500
V.
Page
7-4.
Change C427
to a
selected
component, C427*.
Page
7-5.
Change
R403
and
R404
to
R403*
and
R404*.
Change
R419*
to Part
No. 0683-3315, R:fxd 330
«
±
5%
1/4W.
Page 7-6.
Change
R426
and R429
to
R426* and R429*.
CHANGE
NO.
1:
For
All Serial
Numbers.
Page
7-8.
Add
Part
No. 1200-0077,
lnsulator:transistor
mica,
TQ
= 3
to
Miscellaneous
Parts.
CHANGE
NO.
2:
For
Serial
No.
1218A14726 and
Greater.
Page 7-6.
Change R207
to Part
No. 0757-0848.
CHANGE
NO.
3:
For
Serial No.
1218A16126
and
Greater.
Page 6-9/6-10, Figure
6-4.
Change
value of
A7R708
to
24.
Page
7-4.
Change
CR704
to Part
No. 1901-0701
.
Page
7-5.
Change Q1
to Part
No. 1853-0063
Tstr:Si
PNP.
Page 7-7.
Change R708
to Part
No. 0683-2405 R:fxd
24
«
±
5%1/4W.
CHANGE
NO.
4:
For
Serial
Numbers 1218A16126
thru
1218A16425.
If
C71
1 ,
R701
or
R702
require
replacement,
replace
with
part
number
listed
above.
If
unable to
obtain above
part
numbers,
replace
all
three
components
with
part
numbers
specified
in
Table 7-1. This
is
necessary to maintain the
same
oscillator
frequency provided by
the above
component
values.
CHANGE
NO.
5: For
Serial
Numbers 1218A18576
and
Greater.
Page 6-9/6-10,
Fig.
6-4.
Change T1
lead
designation color
codes
as
follows:
OLD
Primary
Side- YEL(L)
BLU
GRN(L)
VIO
NEW
BLK
BLK/GRN
BLK/YEL
BLK/RED
Secondary Side-RED(S)
pin
1
6
BLU
ORN(L)pin8
VIO
ALL OTHER SECONDARY COLOR
CODES RE
MAIN THE SAME.
Page
7-2, Fig. 7-1.
Change Index No.
6,
Rear
Panel,
to
Part
No. 03400-00205.
CHANGE
NO.
6
applies to
serial
numbers 1218A18776
'
and
greater.
Page 7-8,
Miscellaneous. Delete Insulator,
1200-0043 and
1200-0077.
Add
InsulatonTransistor,
0340-0580.
CHANGE
NO.
7
applies to serial
numbers 1218A19076
and
greater.
Page 6-3/6-4,
A2
Schematic.
Change
A2C208
from
.01
mF
to .02 mF.
Page 7-3,
Table
7-1.
Change
the -hp- Part
Number
and
description of
C208
to
0150-0024,0.02
mF-
CHANGE
NO.
8 applies to
all
serial
numbers.
Page
1-0,
Table
1-1.
Change
the
POWER
specification
to:
1 1
5 or
230
V
ac
±
1
0%,
48
to
66 Hz,
1
5
VA
max.
Page 6-5/6-6, Figure
6-2.
Change R433 from 24
K
to
249
K.
C711
is
0170-0019
C:fxd
0.1
uF 200 V
R701,
R702
are
0757-0852 R:fxd
47.5
K
1%.
Page
6-7/6-8, Figure 6-3.
Change R617
from 1800
to
1
.82
K
and
R3*
from 1200
to
1210.
10 October 1977 Supplement
A
for
03400-90008