
d.
Lo osen
the
captive
screw
on
the
b ottom
co
v
er's
bac
k
edge.
e.
Slide
the
co
v
er
tow
ard
the
rear
of
the
instrumen
t.
f.
Mov
e
the
jump er
to
the
AL
T
p osition
as
sho
wn
in
Figure
7-2.
g.
Replace
the
b ottom
co
v
er,
corner
bump ers,
and
p o
w
er
cord.
Figure
JUMP7
here.
Figure
7-2.
Jumper
P
ositions
on
the
A9
CPU
3.
Switch
on
the
analyzer
and
press
4
PRESET
5
4
SYSTEM
5
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
SERVICE
MENU
NNNNNNNNNNNNNNNNN
TESTS
4
46
5
4
21
5
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
EXECUTE
TEST
to
generate
new
analog
bus
correction
constan
ts.
Then
press
4
PRESET
5
4
SYSTEM
5
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
SERVICE
MENU
NNNNNNNNNNNNNNNNN
TESTS
4
45
5
4
21
5
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
EXECUTE
TEST
to
generate
default
pretune
correction
constan
ts.
Press
4
PRESET
5
4
SYSTEM
5
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
SERVICE
MENU
NNNNNNNNNNNNNNNNN
TESTS
4
48
5
4
21
5
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
EXECUTE
TEST
NNNNNNNNNNN
YES
to
generate
new
pretune
correction
constan
ts.
Note
Alwa
ys
press
4
PRESET
5
b efore
and
after
p erforming
an
adjustmen
t
test.
4.
Press
4
PRESET
5
and
observ
e
the
analyzer
display:
No
error
message:
restore
the
A9
CC
jump er
to
the
NRM
p osition.
Then
refer
to
\P
ost-Repair
Pro
cedures"
in
Chapter
14
to
v
erify
op eration.
Error
message
visible:
con
tinue
with
\A4
Sampler/Mixer
Chec
k."
DRAFT
3/21/106
15:13
Source
Troubleshooting
7-5
Artisan Scientific - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisan-scientific.com
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