4-18 Assembly Access
Motherboard
Note
To replace the motherboard
in
the HP 9040,
first
remove the System
II
enclosure from the base assembly. The
first
7 steps that follow describe
this procedure. To replace the
HP
9030
motherboard, begin with step 1
and
then skip to step
8.
1.
SET THE POWER SWITCH ON THE
REAR
PANEL TO THE
"0"
POSITION
AND
DIS-
CONNECT THE
AC
POWER CORD FROM THE WALL OUTLET.
2.
Remove both front panels
and
the flip-top cover as previously described.
3. Disconnect service panel cable from service panel board.
4.
Remove four bolts
and
nuts (two
on
each side) that attach support bracket to service panel
bracket.
5.
Remove the two screws at lower front
and
two screws at lower back that secure System
II
enclosure
in
base assembly.
6.
Lift
System
II
enclosure out of base assembly.
7.
Remove the two screws that attach the support bracket to the enclosure,
and
remove the
bracket.
8. Remove
all
four covers (top, bottom,
and
both sides) from System
II
enclosure as previously
described.
9. Remove processor stack, power supply,
SCM,
and
110
backplane as described in preceding
procedures.
10. Disconnect lOP cable from motherboard.
11. Disconnect both fan cables from motherboard.
12.
If
one
or
two additional lOP cables are
in
place, disconnect cables at lOP finstrates
and
remove lOP cable strain relief clamp from bottom of base plate, freeing cables.
13. Remove eight
#2
Pozidriv screws (four
on
each side) that attach base plate to enclosure.
14.
Pull base plate with attached motherboard out bottom of enclosure.
15. Remove nine
#2
Pozidriv screws that attach motherboard to base plate,
and
remove
motherboard.
lOP Cable
1.
Perform preceding Motherboard procedure.
2.
Remove four
#2
Pozidriv screws that attach lOP cable strain relief clamp to base plate,
remove clamp,
and
remove cable.
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