Agilent Technologies 4349B - Page 215

4349B
5.
Remove the
A1 main
board assembly
.
a.
Disconnect the
following cable
assemblies from
the A1
board.
i.
Four
(or two
for Option
001) cables
connected
to
the
UNKNOWN
connectors
.
ii.
The cable
assembly from
the transformer
.
iii.
Two cable
assemblies from
the dc-dc
converter
.
b.
Remove the
four
studs
that
secure
the
A1
board
to
the
chassis
by
rotating
them
using
a
at
blade screwdriver
.
c.
Remove the
screws
that
secure
the
A1
board
to
the
chassis
.
d.
Remove the
A1
board
from
the
chassis
.
Figure
B-4
shows
the
location
of
the
sockets
for
the
pull-up
resisters
(J13
and
J19)
and
the
switch
for
EXT
DCV2
voltage
setting
(SW1).
T
able
B-3
lists
the
location
of
the
pull-up
resisters
.
Handler Interface Installation B-7