Agilent Technologies 4395A Service Manual

ST
ART HERE
1.
Check the
Po
wer-On
Sequence
See the
INSPECT THE
POWER-ON
SEQUENCE in
the c
hapter
6
for
c
hec
king
the
P
o
w
er-On
Sequence.
Check the
4
Ch 1
5 and
4
Ch 2
5 Operations
a.
Press
4
Ch
1
5
and
4
Ch
2
5
alternately
.
b.
Check
that the
tw
o LEDs
alternately
ligh
t
eac
h
time
y
ou
press
the
k
eys.
If
b
oth
LEDs
w
ould
not
ligh
t,
con
tin
ue
with
the
next
Che
ck
the
A1
Eight LEDs.
If
the
t
w
o
LEDs
do
not
alternately
ligh
t (the
4
Ch
1
5
LED
is
still
lit
ev
en
if
pressing
the
4
Ch
2
5
), the
A1 CPU
is probably
fault
y
.
Replace
the
A1
CPU.
If
the
t
w
o
LEDs
alternately
ligh
t
eac
h
time
y
ou
press
the
k
eys,
the
A1 CPU
is probably
w
orking
prop
erly
.
Con
tin
ue
with
the
TR
OUBLESHOOT
THE
A51
GSP
AND A52
LCD
in
this
c
hapter.
Check
the
A1
Eight
LEDs
There
are
eigh
t
LEDs
on the
A1 CPU.
These
LEDs
should
b
e
in
the
pattern
sho
wn
in
Figure
8-5
at
the
end
of
the
p
o
w
er
on
sequence. P
erform the
follo
wing
pro
cedure
to
c
hec
k
the
A1
eigh
t
LEDs.
a.
T
urn
the analyzer
turn
o.
b.
Remo
v
ethe
b
ottom
co
v
er
of
the
analyzer.
c.
T
urn
the
analyzer
p
o
w
er
on.
d.
Lo
ok
at
the
A1
eigh
t
LEDs.
Some
of
the
LEDs
ligh
t
during
the
p
ow
er on
sequence.
A
t
the
end of
the p
o
w
er
on
sequence,
the
LEDs
should
sta
y
in
the
pattern
sho
wn
in
Figure
8-5
.
If
the
LEDs
sta
y
in
the other
pattern, the
A1 CPU
is probably
fault
y
.
Replace
the
A1
CPU.
8-6 Digital Control Troubleshooting

Agilent Technologies 4395A Specifications

General

Brand	Agilent Technologies
Model	4395A
Category	Measuring Instruments
Language	English