R Epl Acing Or R Efitting The P O W Er S Upply B Oard - HP 8110A Service Manual

HP 811 OA Service Guide
5-1 4 Disassem bly and R eassembly
5 .
R
emove the 6 screws securing the
P ower Supply board to the
chassis
6 . Disconnect the two fan power connectors
J
402 and
J
403 (see
Figure 5-8
f
or their positions),
n oting which plug goes to which
connector
7 .
R
emove the
b
oard this w ay:
Caution The
P
ower Supply board is heavy!
T ake care not to flex
t
he
b
oard
6
when moving it
ι
S
lide the b oard α small
a mount toward the Motherboard to
clear the
p
ower inlet
ι Lift the end of t he P C board
n
earest the rear
p anel, and raise it
above the rear
p
anel
ι Carefully, pull the
b oard back until the ribbon cable connected
to
J
401 (see Figure 5-8
f
or
p osition
o
f J401)
b
ecomes
f
airly
straight .
ι
R emove the connector from J401
ι Lift out the
P
ower Supply board
R
eplaci ng or
R
efitting th e
P
ower S upp ly
B
oard
1 . L ay the
P ower Supply board inside the chassis with t he
P ower Inlet end p ropped up on the rear
p anel . Connect the
M otherboard ribbon-cable connector to
J
401 (see Figure 5-8
f
or
p
osition
o
f J401)
2 . Slide the
b
oard forward and
l
ower it into
p osition
3 .
R eplace the 2 screws securing the
p ower inlet to the rear
p
anel
but do not tighten t hem yet
4 .
R eplace the 6 screws securing the
P
C
b oard but do not tighten
t
hem yet
5 . Tighten t he 2 screws securing the
p
ower inlet
6 . Tighten t he 6 screws securing the
P
C board
7.
R eplace the Grounding Screw with its washer and tighten it fully
8 .
R econnect the two fan power connectors
J
402 and
J
403 (see
Figure 5-8 for their
p
ositions), ensuring that each plug is
connected to the correct connector
9 .
R
econnect the
p ower switch actuating rod and check
t
hat it
operates smoothly
10 .
R eplace the HP- ΙΒ subassembly, ensuring that the
n arrow side
of t he 'D' connector is uppermost .
R eplace and tighten t he 2
hexagonal stand-offs