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HP 330 Service Information Manual

HP 330
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Power
Supply
Introduction
Both
conlputers
and
expanders
use
this
power supply.
The
power supply provides all power
to
the
assenlblies installed in
the
unit.
It
is a
non-adjustable
switching supply
that
is
an
exchange
assembly.
Power
Supply
Characteristics
Power supply characteristics
are
•
Operates
on
120
or
240 VAC, 50-60 Hz.
•
Outputs
these voltages:
•
+5
Vdc
•
+12
Vdc
•
-12
Vdc
• Power-Up
RESET
signal sent
to
processor
board
to
initialize
CPU.
Maximum
power consumed by
the
computer
or
expander
is
250
watts.
For
the
computer,
power
consumption
by
the
power supply
and
assemblies in
the
system slots is included in
the
250
watts.
The
remaining 147
watts
is available for assemblies in
the
units
system
or
DIO
slots. In
the
expander,
most
of
the
power is available for system
boards
or
DIO
cards.
The
following
table
shows
the
power available
to
all combined
motherboard,
DIO,
and
system
slots for Model
330/350
computers
and
HP
98568A
Opt.
132
and
HP
98570A expanders.
Voltage Power Available Current Available
+5
Vdc
95
Watts
19
Amps
+12
Vdc
40
Watts
3.3 Amps
-12
Vdc
12
Watts 1 Amp
CAUTION
When
boards
are
installed
in
the
unit,
they
use power
and
the
amount
left over is less
than
shown
in
the
table
above.
Before installing
boards
or
cards
in
the
unit,
ensure
the
total
maximum
power
consumed
by all
cards
and
boards
for each voltage
in
the
unit
does
not
exceed
the
power available
at
that
voltage.
If
the
board
or
card
to
be
installed
require
more
power
than
is available,
damage
to
the
accessory
or
computer/expander
may
result. Refer
to
the
Service
Handbook,
Chapter
3.
Figure
3-9
is
a block
diagram
of
the
power supply used in
the
computer
and
expander.
64
Functional Description

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HP 330 Specifications

General IconGeneral
Storage500 GB HDD (7200 rpm)
Operating SystemWindows 7 Professional 64-bit
GraphicsIntel HD Graphics
Dimensions14.88 x 6.89 x 15.02 inches
ProcessorsIntel Celeron, Pentium, Core i3/i5/i7
ProcessorIntel Celeron
USB Ports4x USB 2.0
Optical DriveDVD-Writer
NetworkGigabit Ethernet

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