HP 6296A - Page 7

Page
4 -
HP
P/N
06296-90001
changes - continued
---------------------------------------------------------------------
HP
PART
NO.
DESCRIPTION
:----------------------------------------------·
:
STANDARD
l
OPTION
A85
OPTION
X95
----------------------:-------------:---------------:----------------
Front Panel,
Lettered :
06296-60004
06296-60001
:
<---------
Heat
Sink
Assembly
5060-7968
<-----~---
:
5060-6131
,Rear
Chassis
5000-9485
<---~-----
:
5000-6103
:eover,
Top
5000-9431
<-----~-~
:
5000-6104.
:chassis,
Right
Side
5000-9406
<----------
:
5000-6098
:chassis,
Left Side 5000-9407
<-----~---
;
5000-6099
----------------------------------------------------------------------
CHANGE
6
In
the
parts
list,
change
R309
to
125
ohm,
40
W,
HP
P/N
0811-2621.
CHANGE
7
In
the
parts
list,
change
R826
to
3.9
k,
5S,
1/2
W,
HP
P/N
0686-3925.
CHANGE
8
CHANGE
13
(Cont)
Option
X95
designates use of the
former
color
scheme
of
light
gray
and
blue gray.
Option
A85
designates use
of
a
light
gray
front panel with
olive
gray
used
for
all
other external
surfaces.
New
part
numbers
are
shown
above.
·
CHANGE
14
•
In
the
parts
list,
change
R816
to
56
k,
5S,
1/2
W,
AB,
HP
P/N
0686-5635.
CHANGE
9
All primary
ac
connections
have
been
removed
from
the
circuit
board
and
are
now
made
directly
to
the transformer
primaries.
R903
has
been
removed
from
the
PC
board
and
is
now
on
a
new
terminal
strip
(0360-1696)
•
mounted
on
the
SCR
heatsink assembly.
Th1ese
chan~es
do
not
affect
the
circuit
schematic.
In
the
parts
list
and
on
the schematic,
change
R501
and
R502
to
22
ohm,
51,
1/2
W,
HP
P/N
0686-2205.
CHANGE
10
In
the
parts
list,
delete
Cable
Clamp,
HP
PIN
1400-0332, qty.
2,
and
add
Terminal
Strip,
HP
P/N
0360-0417.
CHANGE
11
The
serial
prefix of the supply has
been
changed
to
1140A.
1his
is
the only change.
CHANGE
12
In
the replaceable
parts
list
and
on
the
schematic, change
R702
to
1.5
k,
ww,
3
W,
HP
P/N
0811-1805,
and
change
R709
to
1.6 k,
5S,
1/2 W
HP
P/N
0686-1625.
CHANGE
15
TSOO
has
been
replaced
by
a
new
transforiner
with
a
dual-winding primary for
115/
230
Vac
operation.
The
new
transformer
CHP
l?/N
06296-80091)
replaces both
TSOO
transfonn1!rs
previously used in
this
model
for
115
V or
230
V
operation.
Since
it
is
no
longer necessary
to
replace
TSOO
to
convert the supply
from
115
to
230
V
operation or vice-versa,
Option
018
(whJLch
equipped the supply
for
230
V
operation
cm-
ly) has
been
replaced
by
a
new
optie>n,
Option 028.
In
the replaceable parts
li~>t,
remove
R903
CHP
P/N
0686-1245)
(qty 1).
Option
-028
modifies the standard
115
V unit
to
a
230
V
unit
as described
below.
To
ccm-
vert the supply for
230
V
operation:
;
CHANGE
13
a.
Remove
the jumpers
from
between
terminals terminals
1
and
3,
and
2
arid
. •
4
of
T800.
The
standard colors for
this
instrument are
now
mint gray
(for
front
panels
and
rear
panels)
and
olive gray
(for
all
top, bottom,
side,
and
other external
surfaces).
4
b.
Install
a
jumper
between
terminals
2
and
3
of
T800. ·
c.
Replace
F1
with a
3A
250
V
fuse
(2100-0003).