IBM HC10 Service Guide - Page 23

System, board, layouts, connectors, jumpers, buttons - storage

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System board layouts The following illustrations show the connectors, LEDs, switches, and jumpers on the system board. The illustrations in this document might differ slightly from your hardware. System board connectors The following illustration shows the connectors on the system board. Battery Video controller Microprocessor Compression card SATA storage drive DIMM1 DIMM2 DIMM3 DIMM4 System board jumpers and buttons The following illustration shows the location of the BIOS recovery jumper and the clear CMOS button on the system board. BIOS recovery jumper Clear CMOS button The following table defines the function of each jumper and button on the system board. Name BIOS recovery jumper (J21) Description The BIOS recovery jumper (J21) can be opened or closed. In the open position, the jumper is only connected to one pin. To set the jumper to the closed position, place the jumper on both pins. v Open (default): Normal operation. v Closed: Enables the BIOS recovery mode that allows the BIOS firmware to be restored or updated. Chapter 1. Introduction 7

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System
board
layouts
The
following
illustrations
show
the
connectors,
LEDs,
switches,
and
jumpers
on
the
system
board.
The
illustrations
in
this
document
might
differ
slightly
from
your
hardware.
System
board
connectors
The
following
illustration
shows
the
connectors
on
the
system
board.
Microprocessor
DIMM1
DIMM2
DIMM3
DIMM4
Battery
SATA storage drive
Video controller
Compression card
System
board
jumpers
and
buttons
The
following
illustration
shows
the
location
of
the
BIOS
recovery
jumper
and
the
clear
CMOS
button
on
the
system
board.
BIOS recovery jumper
Clear CMOS button
The
following
table
defines
the
function
of
each
jumper
and
button
on
the
system
board.
Name
Description
BIOS
recovery
jumper
(J21)
The
BIOS
recovery
jumper
(J21)
can
be
opened
or
closed.
In
the
open
position,
the
jumper
is
only
connected
to
one
pin.
To
set
the
jumper
to
the
closed
position,
place
the
jumper
on
both
pins.
v
Open
(default):
Normal
operation.
v
Closed:
Enables
the
BIOS
recovery
mode
that
allows
the
BIOS
firmware
to
be
restored
or
updated.
Chapter
1.
Introduction
7