HP 3457A - 6-15. DISASSEMBLY;ASSEMBLY PROCEDURES; 6-17. Rear Terminal Assembly Removal; 6-19. Optional Plug-In Assembly Removal

3457A Replaceable Parts
6-15. DISASSEMBLY/ASSEMBLY PROCEDURES
6-16,
The
following
procedures
explain
how
to
remove
and
replace
certain
cabinet
parts
and
printed
circuit
assemblies.
To avoid personal injury, be certain that the line power and all external inputs are
disconnected
from
the
HP
3457A_
before
proceeding
with
any
disassembly
procedures,
To prevent damage to the HP 3457A, observe static handling and clean handling
techniques when disassembling.
6-17. Rear Terminal Assembly Removal
6-18.
No
prior
disassembly
of
the
instrument
is
required
to
remove
the
Rear
Terminal
Assembly.
Remove
the
Rear
Terminal
Assembly
as
follows:
a, Remove the power cord and all external input connections from the HP 3457A.
b.
Remove
the
two
screws
attaching
the
Terminal
Assembly
to
the
rear
panel.
c.
Remove
the
Terminal
Assembly
from
the
rear
panel
and
disconnect
the
attached
connector.
d, Replace the Terminal Assembly by reversing the order of steps a through c.
6-19. Optional Plug-In Assembly Removal
6-20.
No
prior
disassembly
of
the
instrument
is
required
to
remove
the
Optional
Plug-In
Assemblies.
Remove
the
Optional
Plug-In
Assemblies
as
follows:
a.
Remove
the
power
cord
and
all
external
input
connections
from
the
HP
3457A.
b.
Remove
the
two
screws
attaching
the
Terminal
Block
Assembly
to
the
rear
panel.
c.
Remove
the
Terminal
Block
Assembly.
d. Lift the two white locking levers to release the locking mechanism.
e.
Use
the
holes
provided
in
the
corners
of
the
Plug-In
Assembly
shield
to
pull
the
assembly
free
of
the
instrument.
f,
Squeeze
the
locking
tabs
of
the
attached
connector
together
and
disconnect
the
connector.
g.
To
replace
the
Plug-In
Assembly,
reverse
the
order
of
steps
a
through
fs,
6-3