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Agilent Technologies 4395A - Page 17

Agilent Technologies 4395A
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Required Equipmen
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5-27
Pro
cedure
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5-27
13.
Receiv
er
Atten
uator Adjustmen
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5-29
Required Equipmen
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5-29
Pro
cedure
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5-29
14.
IF BPF
Flatness Adjustmen
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5-30
Required
Equipmen
t
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5-30
Pro
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5-30
15.
DC Bias
Adjustment
(Option 010)
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. 5-31
Required
Equipmen
t
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5-31
Pro
cedure
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5-31
6.
T
roublesho
oting
INTR
ODUCTION
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6-1
TR
OUBLESHOOTING
SUMMARY
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6-1
ST
AR
T
HERE
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6-3
INSPECT
THE
PO
WER
ON
SEQUENCE
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6-4
Chec
k
the
F
an
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6-4
Check
the F
ront
P
anel
LEDs
and
Displa
ys
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6-4
Chec
k
Error
Message
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6-4
INSPECT
THE
REAR
P
ANEL
FEA
TURE
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6-5
Check
the
GPIB
In
terface
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6-5
Chec
k
the
P
arallel
Interface
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6-5
Chec
k
the
mini
DIN
Keyb
oard
Connector
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6-5
In
ternal
T
ests
F
ailure
T
roublesho
oting
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6-6
Chec
k
the
P
ow
er-On
Selftest
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6-6
Execute
All
In
ternal
T
ests
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6-6
Execute
the
Individual
T
est
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6-6
External
Tests
Failure
T
roublesho
oting
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6-8
P
erformance
T
ests
F
ailure
T
roublesho
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6-9
P
erform
Adjustmen
ts
and
Correction Constan
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6-9
7.
P
o
w
er
Supply
Troublesho
oting
INTR
ODUCTION
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7-1
ST
ART
HERE
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7-3
1. Chec
kthe
Fan
is Rotating
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7-3
2.
Chec
k
the
A50
SHUTDO
WN LED
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7-3
A50
Shutdown LED .
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. . . 7-4
3. Chec
k the A1 +5 VD LED
. . . . . . . .
. . . . . . . . . . . . 7-4
Measure the A1 +5 VD V
oltage . . . . . . . . . . . . . . . . . . 7-5
FIND OUT WHY THE F
AN IS NOT R
OTATING . . . . . . . . .
. . . 7-6
1. Chec
k the Line V
oltage, Selector Switc
h Setting,
and F
use . . . . . . . 7-6
2. Chec
k the A50 SHUTDO
WN LED
. . . . . . . . . . . . . . . . .
7-6
FIND OUT WHY THE A50 SHUTDO
WN LED IS OFF
. . . . .
. . . . 7-7
1. Disconnect the Cable from
the A1J10 .
. . . . . . . . . . . . . . . 7-7
2. RemoveAssemblies . . . . . . . . . . . . . . . . . . . . . . . . 7-7
3. Disconnect the Cable from the A9J2 . . . . . . . . . . . . . . . . 7-7
FIND OUT WHY THE A1 +5 VD LED IS NOT ON STEADILY . . . . . 7-9
1. Check the A40 Pre-Regulator . . . . . . . . . . . . . . . . . . . 7-9
2. Check the A50 DC-DC Converter . . . . . . . . . . . . . . . . . 7-9
3. Disconnect Cables on the A1 CPU . . . . . . . . . . . . . . . . . 7-10
Contents-7

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