Dealing
with
Hardw
are
F
aults
If
y
our
system
still
fails
to
b o ot,
match
the
LED
pattern
that
y
ou
had
noted
in
the
list
of
steps
in
T
able
6-2
earlier
in
this
c
hapter
against
those
listed
in
T
able
6-5
and
take
the
recommended
action.
If
the
action
has
no
eect,
con
tact
y
our
designated
service
represen
tativ e
for
assistance.
LED
Error
Codes
This
section
con
tains
information
ab out
the
error
co des
display
ed
b
y
the
LEDs
that
are
lo
cated
b ehind
the
fold-aw
a
y
corner
b ezel
(see
Figure
6-1 ).
There
are
eigh
t
amb er
LEDs
and
t
w
o
green
LEDS.
One
green
LED
indicates
whether
the
p o
w
er
is
on
or
o.
It
is
not
lab
eled.
The
other
green
LED
indicates
whether
or
not
the
service
mo
de
has
b een
activ
ated.
It
is
lab
eled
\Service,"
and
it
is
placed
next
to
the
service-mo de
switch.
The
service
mo
de
is
used
only
during
man
ufacturing.
The
eigh
t
amb er
LEDs
(lab
eled
8 |1 )
display
dieren
t
patterns
that
corresp ond
to
a
v
ariety
of
hardw
are
error
conditions.
Troubleshooting
6-19
Summary of Contents for Model 720 - Workstation
Page 2: ......
Page 3: ...1 January 1991 Edition 1 January 1991 Edition 1 1 1 ...
Page 8: ......
Page 13: ...Figure 2 3 System Unit Switch Locations Your HP Apollo 9000 Model 720 730 Workstation 2 5 ...
Page 15: ...Figure 2 4 LED Windows Your HP Apollo 9000 Model 720 730 Workstation 2 7 ...
Page 60: ......
Page 117: ...Figure 5 1 Core I O Card Removal Expanding Your Workstation and Replacing Its Parts 5 7 ...
Page 119: ...Figure 5 2 Processor Card Removal Expanding Your Workstation and Replacing Its Parts 5 9 ...
Page 121: ...Figure 5 3 SIMM Card Removal Expanding Your Workstation and Replacing Its Parts 5 11 ...
Page 123: ...Figure 5 4 Internal Disk Removal Expanding Your Workstation and Replacing Its Parts 5 13 ...
Page 129: ...Figure 5 7 VSC Interface Card Removal Expanding Your Workstation and Replacing Its Parts 5 19 ...
Page 131: ...Figure 5 9 Power Supply Removal Expanding Your Workstation and Replacing Its Parts 5 21 ...
Page 132: ......
Page 157: ...Troubleshooting 6 25 ...
