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Internal
T
ests
F
ailure
Troubleshooting
Check
the
P
o
w
er-On
Selftest
The
analyzer
p erforms
the
p o
w
er-on
selftest
ev
ery
time
when
the
analyzer
is
turned
on.
In
the
p o
w
er-on
selftest,
some
built-in
in
ternal
tests
are
executed
sequen
tially
.
The
rst
failed
test
indicates
the
most
probable
faulty
assem
bly
and
y
ou
should
b e
replaced.
If
the
p o
w
er-on
selftest
fails
and
\ POWER
ON
TEST
FAILED "
message
is
display
ed,
execute
all
in
ternal
tests
to
iden
tify
the
rst
failed
test.
Refer
to
the
following
steps
to
execute
all
in
ternal
tests.
Then
refer
to
the
T
able
6-1
to
kno
w
what
assem
bly
y
ou
should
replace.
Execute
All
Internal
T
ests
If
the
p o
w
er-on
self
test
fails
and
\ POWER
ON
TEST
FAILED "
message
is
display
ed,
y
ou
should
execute
the
all
in
ternal
tests
and
iden
tify
the
rst
failed
test.
T
o
execute
all
in
ternal
tests,
y
ou
should
sp ecify
test
n
um
b er
as
0
in
the
4395A
service
tests
mo
de.
a.
Press
4
PRESET
5,
4
SYSTEM
5,
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
SERVICE
TESTS
,
4
0
5,
and
4
x1
5
to
access
the
in
ternal
test
0:
ALL
INT.
b.
Press
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
EXECUTE
TEST
to
execute
the
ALL
INT
test.
c.
W
ait
un
til
the
test
result,
P
ASS
or
F
AIL,
is
display
ed.
d.
Press
the
4
*
5,
4
+
5
k
eys
to
nd
the
rst
o ccurrence
of
a
F
AIL
message.
Execute
the
Individual
T
est
If
y
ou
w
ould
like
to
p erform
the
in
ternal
test
individually
,
y
ou
should
sp ecify
in
ternal
test
n
um
b er
in
the
4395A
service
tests
mo
de.
a.
Press
4
PRESET
5,
4
SYSTEM
5,
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
SERVICE
TESTS
.
Pressing
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
INTERNAL
TESTS
jumps
to
the
rst
test
in
ternal
test,
test:0
ALL
INT.
b.
Select
the
test
using
the
RPG
knob,
4
*
5,
4
+
5
k
eys
or
ENTR
Y
k
eys.
c.
Press
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
EXECUTE
TEST
to
execute
the
sp ecify
ed
test.
d.
W
ait
un
til
the
test
result,
P
ASS
or
F
AIL,
is
display
ed.
Note
In
ternal
test
1,
2,
3,
7,
17,
18,
38
and
39
are
not
executed
in
the
p o
w
er-on
selftest.
Y
ou
should
p erform
these
tests
b
y
sp ecifying
test
n
um
b er
or
b
y
executing
all
in
ternal
tests.
6-6
Troubleshooting
Summary of Contents for 4395A
Page 10: ......
Page 26: ......
Page 34: ......
Page 77: ...Figure 2 17 B R Magnitude Ratio Phase Dynamic Accuracy Test Setup 2 Performance Tests 2 43 ...
Page 167: ...Figure 5 1 Adjustment Hardware Setup Adjustments 5 5 ...
Page 186: ...Figure 5 13 Receiver Gain Adjustment Location 5 24 Adjustments ...
Page 190: ...Figure 5 16 Receiver Flatness Adjustment Setup 1 MHz 5 28 Adjustments ...
Page 194: ...Figure 5 20 DC Bias Adjustment Setup 2 5 32 Adjustments ...
Page 196: ...Figure 6 1 Troubleshooting Organization 6 2 Troubleshooting ...
Page 206: ...Figure 7 1 Power Supply Lines Simplified Block Diagram 7 2 Power Supply Troubleshooting ...
Page 212: ...Figure 7 5 A1 CPU Connector Locations 7 8 Power Supply Troubleshooting ...
Page 220: ...Figure 8 1 Digital Control Group Simplified Block Diagram 8 2 Digital Control Troubleshooting ...
Page 240: ...Figure 10 1 Top View Major Assemblies 10 4 Replaceable Parts ...
Page 292: ...Table A 2 Manual Changes by Firmware Version Version Make Manual Changes A 2 Manual Changes ...
Page 308: ......
Page 311: ...Figure B 1 Power Cable Supplied Power Requirement B 3 ...
Page 312: ......
Page 342: ......