Acer Altos 1900 PRO4 User Guide
AcerAltos 19000Pro4AcerAltos 19000Pro4
System Guide
CopyrightCopyright
Copyright 1997 by Acer Incorporated. All rights reserved. No part
of this publication may be reproduced, transmitted, transcribed, stored
in a retrieval system, or translated into any language or computer
language, in any form or by any means, electronic, mechanical,
magnetic, optical, chemical, manual or otherwise, without the prior
written permission of this company.
DisclaimerDisclaimer
This company makes no representations or warranties, either
expressed or implied, with respect to the contents hereof and
specifically disclaims any warranties, merchantability or fitness for
any particular purpose. Any software described in this manual is sold
or licensed "as is". Should the programs prove defective following
their purchase, the buyer (and not this company, its distributor, or its
dealer) assumes the entire cost of all necessary servicing, repair, and
any incidental or consequential damages resulting from any defect in
the software. Further, this company reserves the right to revise this
publication and to make changes from time to time in the contents
hereof without obligation to notify any person of such revision or
changes.
Acer is a registered trademark of Acer Incorporated.
Intel is a registered trademark of Intel Corporation.
Pentium Pro is a trademark of Intel Corporation.
Other brand and product names are trademarks and/or registered trademarks of their
respective holders.
ii
IMPORTANT SAFETYIMPORTANT SAFETY
INSTRUCTIONSINSTRUCTIONS
1. Read these instructions carefully. Save these instructions for
future reference.
2. Follow all warnings and instructions marked on the product.
3. Unplug this product from the wall outlet before cleaning. Do not
use liquid cleaners or aerosol cleaners. Use a damp cloth for
cleaning.
4. Do not use this product near water.
5. Do not place this product on an unstable cart, stand, or table.
The product may fall, causing serious damage to the product.
6. Slots and openings in the cabinet and the back or bottom are
provided for ventilation; to ensure reliable operation of the
product and to protect it from overheating, these openings must
not be blocked or covered. The openings should never be
blocked by placing the product on a bed, sofa, rug, or other
similar surface. This product should never be placed near or
over a radiator or heat register, or in a built-in installation unless
proper ventilation is provided.
7. This product should be operated from the type of power indicated
on the marking label. If you are not sure of the type of power
available, consult your dealer or local power company.
8. This product is equipped with a 3-wire grounding-type plug, a
plug having a third (grounding) pin. This plug will only fit into a
grounding-type power outlet. This is a safety feature. If you are
unable to insert the plug into the outlet, contact your electrician
to replace your obsolete outlet. Do not defeat the purpose of the
grounding-type plug.
9. Do not allow anything to rest on the power cord. Do not locate
this product where persons will walk on the cord.
iii
10. If an extension cord is used with this product, make sure that the
total ampere rating of the equipment plugged into the extension
cord does not exceed the extension cord ampere rating. Also,
make sure that the total rating of all products plugged into the
wall outlet does not exceed 15 amperes.
11. Never push objects of any kind into this product through cabinet
slots as they may touch dangerous voltage points or short out
parts that could result in a fire or electric shock. Never spill
liquid of any kind on the product.
12. Do not attempt to service this product yourself, as opening or
removing covers may expose you to dangerous voltage points or
other risks. Refer all servicing to qualified service personnel.
13. Unplug this product from the wall outlet and refer servicing to
qualified service personnel under the following conditions:
a. When the power cord or plug is damaged or frayed
b. If liquid has been spilled into the product
c. If the product has been exposed to rain or water
d. If the product does not operate normally when the operating
instructions are followed. Adjust only those controls that are
covered by the operating instructions since improper
adjustment of other controls may result in damage and will
often require extensive work by a qualified technician to
restore the product to normal condition.
e. If the product has been dropped or the cabinet has been
damaged
f. If the product exhibits a distinct change in performance,
indicating a need for service
14. Replace battery with the same type as the product's battery we
recommend. Use of another battery may present a risk of fire or
explosion. Refer battery replacement to a qualified serviceman.
iv
15. Warning! Battery may explode if not handled properly. Do not
recharge, disassemble or dispose of in fire. Keep away from
children and dispose of used battery promptly.
16. Use only the proper type of power supply cord set (provided in
your keyboard/manual accessories box) for this unit. It should be
a detachable type: UL listed/CSA certified, type SJT, rated 6A
125V minimum, VDE approved or its equivalent. Maximum
length is 15 feet (4.6 meters).
v
FCC Class A Radio Frequency InterferenceFCC Class A Radio Frequency Interference
StatementStatement
WARNING!
This equipment has been tested and found to comply with the limits
for a Class A digital device, pursuant to Part 15 of FCC Rules. These
limits are designed to provide reasonable protection against harmful
interference when the equipment is operated in a commercial
environment. This equipment generates, uses, and can radiate radio
frequency energy and, if not installed and used in accordance with the
instruction manual, may cause harmful interference to radio
communications. Operation of this equipment in a residential area is
likely to cause harmful interference in which case the user will be
required to correct the interference at his own expense.
Notice 1:
The changes or modifications not expressly approved by the party
responsible for compliance could void the user's authority to operate
the equipment.
Notice 2:
If the EUT was tested with special shielded cables, the operator’s
manual for such product shall also contain the following statement or
their equivalent:
Shielded interface cables and/or AC power cord, if any, must be used
in order to comply with the emission limits.
vi
About this ManualAbout this Manual
Purpose
This system guide aims to give you all the necessary information to
enable you to set up and operate the AcerAltos 19000 Pro4 system.
Manual Structure
This system guide consists of five chapters.
Chapter 1 System Introduction
This chapter generally describes the system’s unique features
and powerful architecture. It includes a brief introduction of the
new generation Intel Pentium Pro CPU that forms the heart of
the AcerAltos 19000 Pro4 system.
Chapter 2 Setting Up the System
This chapter helps you get started. It illustrates how to prepare
the system for installation, connect the cables, and startup the
system.
Chapter 3 System Configuration
This chapter describes the six major system components that
include the system housing, system board, memory board,
front panel board, disk-array backplane boards, and power
supply.
Chapter 4 BIOS Utility
This chapter explains the BIOS parameter functions. It tells
how to configure the system by setting the parameters.
Chapter 5 Diagnostics and Utilities
vii
This chapter describes how to use the AFlash BIOS Utility and
the EISA Configuration Utility.
viii
Conventions
The following are the conventions used in this manual:
Text entered by user Represents text input by the user.
Option Items Represents options that you can
select on the screen.
Screen messages
Denotes actual messages that
appear onscreen.
, , , etc. Represent the actual keys that you
have to press on the keyboard.
NOTE
Gives bits and pieces of additional
information related to the current
topic.
WARNING
Alerts you to any damage that
might result from doing or not
doing specific actions.
CAUTION
Gives precautionary measures to
avoid possible hardware or
software problems.
IMPORTANT
Reminds you to do specific actions
relevant to the accomplishment of
procedures.
TIP
Tells how to accomplish a
procedure with minimum steps
through little shortcuts.
ix
Table of ContentsTable of Contents
Chapter 1 System Introduction
1.1 Features ..................................................................1-1
1.1.1 Intel Pentium Pro Microprocessor..............1-1
1.1.2 System Architecture..................................1-3
1.1.3 SCSI Disk Array........................................1-5
1.1.4 Server Management..................................1-5
1.1.5 Redundant Power Supply Subsystem ........1-6
1.1.6 Security.....................................................1-6
1.2 External Configuration .............................................1-7
1.2.1 Front Panel............................................... 1-7
1.2.2 Rear Panel..............................................1-13
Chapter 2 Setting Up the System
2.1 Pre-installation Requirements.................................. 2-1
2.1.1 Selecting a Site.........................................2-1
2.1.2 Checking the Package Contents................2-2
2.1.3 Preparing the System Unit.........................2-3
2.2 Basic Connections ...................................................2-5
2.2.1 Keyboard...................................................2-5
2.2.2 Mouse.......................................................2-6
2.2.3 VGA Monitor............................................. 2-7
2.3 System Startup........................................................2-8
2.3.1 Unlocking the Front Panel Security............ 2-8
2.3.2 Turning On the System Power...................2-9
2.4 Power-on Problems ...............................................2-10
x
Chapter 3 System Configuration
3.1 System Housing.......................................................3-1
3.1.1 Internal Structure.......................................3-2
3.1.2 Opening and Removing the Housing
Doors ........................................................3-4
3.1.3 ESD Precautions.....................................3-10
3.1.4 Installing External Devices......................3-11
3.1.5 Installing a Hot-swappable SCSI Drive....3-13
3.1.6 Installing an Expansion Board ................. 3-17
3.1.7 Installing and Removing the Thermal
Air Guide.................................................3-19
3.2 System Board ........................................................ 3-22
3.2.1 Layout.....................................................3-22
3.2.2 Jumpers and Connectors.........................3-23
3.2.3 Installing a Pentium Pro CPU..................3-29
3.3 Memory Board ....................................................... 3-33
3.3.1 Layout.....................................................3-33
3.3.2 Memory Configurations ........................... 3-34
3.3.3 Installing a DIMM.....................................3-36
3.3.4 Removing a DIMM .................................. 3-37
3.3.5 Installing the Memory Board.................... 3-38
3.3.6 Reconfiguring the System........................3-40
3.4 SCSI Disk Array Backplane Board .........................3-41
3.4.1 Features..................................................3-41
3.4.2 Layout.....................................................3-42
3.4.3 Jumper Settings......................................3-43
3.4.4 Hard Disk ID Switch Settings................... 3-44
xi
3.4.5 Channel Configuration.............................3-45
3.4.6 Installing a Backplane Board...................3-48
3.5 Front Panel Board..................................................3-51
3.6 Power Subsystem..................................................3-53
3.6.1 Power Supply Upgrade............................3-54
3.6.2 Charger Board and Battery Box...............3-62
3.6.3 Power Cable Connections.......................3-67
Chapter 4 BIOS Utility
4.1 Entering Setup.........................................................4-2
4.2 System Information..................................................4-3
4.2.1 Processor.................................................. 4-4
4.2.2 Processor Speed .......................................4-4
4.2.3 Bus Frequency..........................................4-4
4.2.4 Internal Cache...........................................4-4
4.2.5 External Cache.......................................... 4-5
4.2.6 Floppy Drive A..........................................4-5
xii
4.2.7 Floppy Drive B..........................................4-5
4.2.8 IDE Primary Channel Master .....................4-5
4.2.9 IDE Primary Channel Slave.......................4-5
4.2.10 Total Memory............................................4-6
4.2.11 Serial Port 1.............................................. 4-6
4.2.12 Serial Port 2.............................................. 4-6
4.2.13 Parallel Port ..............................................4-6
4.2.14 Pointing Device.........................................4-6
4.3 Product Information .................................................4-7
4.3.1 Product Name...........................................4-7
4.3.2 System S/N............................................... 4-7
4.3.3 Main Board ID...........................................4-8
4.3.4 Main Board S/N .........................................4-8
4.3.5 System BIOS Version................................4-8
4.3.6 System BIOS ID........................................4-8
4.3.7 BIOS Release Date...................................4-8
4.4 Disk Drives ..............................................................4-9
4.4.1 Floppy Drives..........................................4-10
4.4.2 IDE Drives...............................................4-11
4.5 Startup Configuration.............................................4-13
4.5.1 System POST Mode................................4-14
4.5.2 Silent Boot............................................... 4-14
4.5.3 Num Lock After Boot...............................4-14
4.5.4 Memory Test...........................................4-14
4.5.5 System Boot Drive .................................. 4-15
4.5.6 Boot From CD-ROM................................4-15
4.6 Advanced Configuration .........................................4-16
4.6.1 Onboard Devices Configuration...............4-17
4.6.2 PnP/PCI System Configuration................4-23
4.6.3 Memory/Cache Configuration..................4-25
4.6.4 Non-PnP ISA Device Configuration.........4-26
4.7 System Security Setup ...........................................4-30
4.7.1 Disk Drive Control...................................4-31
4.7.2 Setup Password.......................................4-32
4.7.3 Power-on Password.................................4-35
xiii
4.8 Date and Time.......................................................4-36
4.8.1 Date........................................................4-36
4.8.2 Time........................................................4-37
4.9 Remote Diagnostic Configuration...........................4-37
4.10 Load Setup Default Settings ..................................4-37
4.11 Abort Settings Change...........................................4-38
4.12 Reset Non-PnP ISA Device Setting .......................4-38
4.13 Leaving Setup........................................................4-39
Chapter 5 Diagnostics and Utilities
5.1 ASM Pro..................................................................5-1
5.2 Remote Diagnostic Management............................. 5-2
5.3 EISA Configuration Utility ........................................5-3
5.3.1 Functions.................................................. 5-3
5.3.2 Running ECU............................................5-4
5.3.3 Getting Help ..............................................5-4
5.3.4 Making Menu Selections ...........................5-5
xiv
5.3.5 System Memory........................................5-6
5.3.6 PCI Devices IRQ Assignment....................5-6
5.3.7 Peripheral Device Status...........................5-6
5.3.8 System Setting..........................................5-6
List of Figures
1-1 Pentium Pro CPU Architecture.................................1-2
1-2 System Architecture.................................................1-3
1-3 Front Panel ..............................................................1-7
1-4 Front Panel Features................................................1-8
1-5 RDM LED...............................................................1-12
1-6 Rear Panel.............................................................1-13
2-1 Front Wheel Lever ...................................................2-3
2-2 Connecting the Power Cables ..................................2-4
2-3 Connecting a Keyboard............................................2-5
2-4 Connecting a Mouse................................................. 2-6
2-5 Connecting a VGA Monitor .......................................2-7
2-6 Unlocking the Front Panel Security ..........................2-8
2-7 System Power On ....................................................2-9
2-8 Microswitch Location..............................................2-11
3-1 System Housing.......................................................3-1
3-2 Left Panel System Components...............................3-2
3-3 Right Panel System Components............................. 3-3
3-4 Unlocking and Opening the Left Panel Door............. 3-4
3-5 Unlocking and Opening the Lower Front Door ..........3-5
3-6 Unlocking and Opening the Right Panel Door...........3-6
3-7 Removing the Right Panel Door...............................3-8
3-8 Removing the Upper Front Panel Cover...................3-9
3-9 Removing the Upper Front Panel Door.....................3-9
3-10 Removing the Lower Front Panel Door...................3-10
3-11 Attaching the Drive Guides.....................................3-11
3-12 Installing an External Device..................................3-12
3-13 Unlocking the Drive Tray Switch.............................3-13
xv
3-14 Pulling Out a Hot-swap Drive Tray.........................3-14
3-15 Connecting the Drive Cables (Wide SCSI Drive)....3-15
3-16 Connecting the Drive Cables
(Narrow SCSI Drive)..............................................3-15
3-17 Installing a Hot-swap Drive Tray.............................3-16
3-18 Locking the Drive Tray Switch ................................3-17
3-19 Removing a Bracket Cover....................................3-17
3-20 Installing a PCI Expansion Board...........................3-18
3-21 Removing the Thermal Air Guide...........................3-20
3-22 Reinstalling the Thermal Air Guide.........................3-21
3-23 System Board Layout.............................................3-22
3-24 Jumper and Connector Locations...........................3-23
3-25 Attaching the Sliding Heat Sink to the CPU............3-29
3-26 Installing a Pentium Pro CPU .................................3-30
3-27 Installing the Hook-Type Heat Sink and Fan...........3-32
3-28 Memory Board Layout............................................3-33
3-29 Installing a DIMM...................................................3-36
3-30 Removing a DIMM.................................................3-37
3-31 Inserting the Memory Board...................................3-38
3-32 Attaching the Board Holding Clamp........................3-39
3-33 SCSI Disk Array Backplane Board .........................3-42
3-34 Settings for Jumpers J3 and J4..............................3-43
3-35 Hard Disk ID Switch Settings..................................3-44
3-36 Single-Channel Configuration.................................3-45
3-37 Dual-Channel Configuration...................................3-47
3-38 Removing the Drive Bay Covers............................3-48
3-39 Installing a Backplane Board..................................3-49
xvi
3-40 Fast-Wide SCSI HDDs or Ultra-Narrow HDDs
(Single-Channel Configuration for Both
Backplane Boards - 20 MB/sec or Below)...............3-50
3-41 Ultra-Wide SCSI HDDs (Dual-Channel
Configuration for One Backplane Board -
40 MB/sec or Below)..............................................3-50
3-42 Connecting the Backplane Power Cables...............3-51
3-43 Front Panel Board Connections ..............................3-52
3-44 Removing the Metal Bar Screws ............................3-54
3-45 Pulling-out the Metal Bar........................................3-55
3-46 Installing a Power Supply Module ...........................3-56
3-47 Locking the Holding Clips.......................................3-56
3-48 Reinstalling the Metal Bar ......................................3-57
3-49 Securing the Metal Bar with Screws .......................3-58
3-50 Unlocking the Power Supply Holding Clips.............3-59
3-51 Removing the Power Supply Module ......................3-60
3-52 Installing the Power Supply Compartment
Metal Cover...........................................................3-61
3-53 Removing the Charger Compartment
Metal Cover...........................................................3-62
3-54 Installing a Charger Board...................................... 3-63
3-55 Locking the Charger Board .....................................3-64
3-56 Installing a Battery Box ..........................................3-65
3-57 Attaching the Charger Compartment Metal Cover..3-65
3-58 Removing a Battery Box ........................................3-66
3-59 System Board Power Connections .........................3-67
3-60 System Boards and Power Subsystem
Interconnections.....................................................3-68
xvii
List of Tables
1-1 LED Indicator Description.........................................1-9
1-2 LCD Messages.......................................................1-11
3-1 Removing the Housing Doors...................................3-7
3-2 Jumper Settings.....................................................3-24
3-3 CPU Activation Jumpers........................................3-25
3-4 CPU Frequency Ratios (JP3) .................................3-26
3-5 Connector Functions..............................................3-27
3-6 Memory Configurations..........................................3-34
3-7 Terminator Settings for Single-Channel
Configuration.........................................................3-46
3-8 Terminator Settings for Dual-Channel
Configuration.........................................................3-47
3-9 Power Subsystem Configuration ............................3-53
4-1 Parallel Port Operation Mode Settings ...................4-21
4-2 Drive Control Settings............................................4-21
5-1 Keyboard Function Keys ..........................................5-5
xviii
Chapter
11
System Introduction
1.1 Features
The AcerAltos 19000Pro4 is a powerful 64-bit quad-processor system
loaded with a host of new and innovative features. The system offers
a new standard for flexible productivity ideal for local area networks
and multiuser server environments.
1.1.1 Intel Pentium Pro Microprocessor
The Intel Pentium Pro CPU is the heart of the AcerAltos 19000Pro4
system. Designed to work with the Orion chipset composed of a PCI
bridge and memory controller, the Pentium Pro running at 200 MHz
carries a new generation of power not present in its predecessors.
The system board has four CPU sockets to accommodate up to four
Intel Pentium Pro CPUs for a multiprocessor configuration. This
configuration doubles efficiency and reliability thereby upgrading
overall system performance. The Pentium Pro supports a wide range
of applications running under SMP network operating systems such
as WindowsNT, UNIX, NetWare, etc.
The CPU also incorporates the first-level (L1) and second-level (L2)
caches, the advanced peripheral interrupt controller (APIC), and the
system bus controller. Figure 1-1 shows the CPU architecture.
System Introduction 1-1
First-level and Second-level Cache
The Pentium Pro has a 16-KB first-level and 256/512/1024-KB
second-level cache. These caches produce a high hit rate that
reduces the processor’s external memory bandwidth requirements.
Advanced Peripheral Interrupt Controller (APIC)
The APIC unit inside the CPU along with the I/O APIC unit facilitate
multiprocessor interrupt management. The APIC works with multiple
I/O subsystems where each subsystem have its own interrupts that
help minimize centralized system overhead.
Bus Controller
The bus controller integrated in the Pentium Pro CPU controls the
system bus to make it perform its functions efficiently. It ensures that
the bus serves as a reliable interconnection between one or two
CPUs, I/O bridge, and memory controllers.
Pentium Pro CPU Architecture
Figure 1-1 Pentium Pro CPU Architecture
1-2 AcerAltos 19000Pro4 System Guide
1.1.2 System Architecture
The system bus, PCI buses, EISA bus, Orion PCI bridge (OPB),
Orion memory controller (OMC), PCI/EISA Bridge (PCEB), and EISA
system controller (ESC) comprise the basic system architecture.
Figure 1-2 System Architecture
System Introduction 1-3
System Bus
The system bus is the CPU’s major connection to all the system
devices, primarily the PCI and EISA bridges, and the memory
controllers. It can handle as many as eight outstanding transactions
at a time through the transaction pipelining feature in which
consecutive tasks from the CPU are queued in and transported to the
designated devices on a first-in first-out basis. Pipelining allows for
transaction overlapping in different phases as the CPU does not have
to wait for each transaction to complete before it issues the next
transaction. This produces significant improvement on overall system
performance.
The bus architecture supports a number of features that ensure high
reliability. It has an 8-bit error correction code (ECC) that protects the
data lines and a 2-bit parity code that protects the address lines.
The bus uses the gunning transceiver logic (GTL+), a synchronous
latched bus protocol that simplifies timing constraints. This protocol
supports higher frequency system designs but requires a low voltage
that reduces electromagnetic interference (EMI) resulting to a lower
power consumption.
PCI and EISA Buses
The system supports two PCI buses created by the two PCI bridge
chipsets (OPB). The PCI buses serve as the links between the PCI
bridges and the PCI devices onboard. The presence of two buses
instead of one reduces the I/O bottleneck and matches the higher
bandwidth of the CPU for faster data transfers.
The EISA bus connects the EISA devices to the other system devices
through the PCI/EISA bridge (PCEB) and the EISA system
controller (ESC). The use of the PCEB and ESC maintains
compatibility with the EISA environment.
1-4 AcerAltos 19000Pro4 System Guide
Orion PCI Bridge
The Orion PCI bridge (OPB) is a low-cost I/O subsystem solution for
high-performance systems. The OPB translates transactions between
the system bus and the PCI buses using 32-byte buffers for inbound
and outbound postings. The use of two OPBs in the system creates
an architecture that allows faster data transfers.
Orion Memory Controller
The Orion memory controller (OMC) acts as an interface between the
system bus and the system memory. It consists of the DRAM
control (DC) chip and the data path (DP) chip. The OMC relates to
the DRAM array through four memory interface controller (MIC)
chips. The OMC supports 256-bit 4-way memory interleaving
resulting to a more efficient memory traffic management.
1.1.3 SCSI Disk Array
The system supports an array of 14 hot-swappable disk drive trays
through two 7-slot SCSI backplane boards (Acer BP-W7). The trays
accommodate wide and narrow SCSI hard disks. With the AIC-7880
SCSI controller onboard, the transfer rate reaches up to 40 MB per
second for ultra-wide SCSI.
1.1.4 Server Management
The system comes with the ASM Pro feature that allows voltage
stability and CPU thermal monitoring, prevents data loss by prompt
ECC memory error reporting, maximizes system resources by
indicating the PCI bus utilization, and promotes efficiency by
minimizing system downtime.
System Introduction 1-5
A related feature of ASM is the remote diagnostic
management (RDM) that permits system diagnosis from a remote site
through a modem. The RDM facilitate the fixing of detected
problems, changing system configurations or rebooting in the event of
system failure.
1.1.5 Redundant Power Supply Subsystem
The system comes with a power backplane that holds up to three
400-watt power supply modules. The power subsystem supports a
redundant configuration such that even if one power supply fails, the
remaining two continues to work together to supply the 800-watt
requirement for a fully-configured system.
Two important segments of the power subsystem configuration are
the charger board and battery box. Together, these two components
function like an uninterruptible power supply (UPS). Providing an
additional support to the three 400-watt power supply modules, the
battery automatically charges whenever the system is on. The
battery gives a fully-configured system the ability to run continuously
through short interruptions in wall power or for a maximum of six
minutes in the event of total AC power shutdown.
1.1.6 Security
The system housing comes with mechanical security locks on both
the front panel and the side panel preventing unauthorized access to
the internal components and system use.
The system BIOS secures the CMOS data and other system software
with power-on password, keyboard password, setup control, disk drive
control, and monitor control.
1-6 AcerAltos 19000Pro4 System Guide
1.2 External Configuration
1.2.1 Front Panel
The system front panel is divided into two sections. The upper front
panel consists of the diskette/CD-ROM/tape drive bays, keylock,
power switch, LED indicators, LCD display screen, and an embedded
reset switch.
The lower part contains the externally accessible hard disk drive bays
with 14 drive trays for narrow or wide SCSI drives. (The basic system
consists of only seven drive trays.)
Figure 1-3 Front Panel
One pair of system keys and one pair of
power switch keylock are hung inside the
upper front door. Additional duplicate keys
can be found at the back of the system.
System Introduction 1-7
Front Panel Features
Figure 1-4 gives a closer look of the upper front panel features.
LCD Display Screen
Power Switch
Reset Switch
(embedded)
5.25-inch
Drive Bays
CD-ROM Drive
3.5-inch
Diskette Drive
LED Indicators
Keylock
Figure 1-4 Front Panel Features
CD-ROM Drive
The basic system comes with a SCSI CD-ROM drive already
installed.
3.5-inch Diskette Drive
A 3.5-inch diskette drive also comes with the basic system.
5.25-inch Drive Bays
Two empty 5.25-inch drive bays allow installation of additional
devices.
1-8 AcerAltos 19000Pro4 System Guide
Power Switch
The power switch allows you to turn the system power on or off.
Reset Switch
Pressing the reset switch generates a hardware reset pulse that
restarts the system initializing all the registers, buffers, and memory
subsystems.
Keylock
The keylock gives security to the system against unauthorized users.
Turning the keylock to the unlocked position enables the power and
reset switches. Turning the keylock to the locked position disables
both switches whether the system is on or off. Supposing the system
is on and you intend to reset or turn it off, make sure that the keylock
is unlocked. Otherwise, the switches do not respond.
LED Indicators
Table 1-1 LED Indicator Description
LED Icons Description
Power Status Green Indicates that power is on. This color also
denotes that the system is running on a
good supply of AC power.
Red Indicates that power is on. The AC power
supply fails and the system is running on
battery power.
Battery Status
UPS
Green Indicates that a battery is present and in
good condition. The battery LED shows
this color during normal system operation,
during which the battery automatically
charges.
When the power status LED is red, a green
battery LED also indicates that the system is
running on battery power. When this
System Introduction 1-9
happens, shutdown the system immediately
because the battery keeps a fully-configured
system running only for about eight minutes.
1-10 AcerAltos 19000Pro4 System Guide
Table 1-1 LED Indicator Description (continued)
LED Icons Description
Battery Status
(continued)
Hard Disk Busy Green Indicates that at least one of the hard disks
Red Normally, this color indicates that the
battery is bad. However, there are times
when the battery LED turns red for a few
seconds due to other factors and NOT
because the battery is bad. See below.
is currently accessing.
Hard Disk
Failure
Green Indicates that all the hard disks installed on
the backplane board are in good condition.
Red Indicates that one of the hard disks installed
on the backplane board is bad.
In these instances, the battery LED may turn red for a few seconds
but DOES NOT necessarily indicate that the battery is bad.
• System Startup
At system power on, the battery LED shows red light when the
system performs initialization and self-tests. The red light should
remain for only a few seconds and eventually turn to green.
• Resumption of AC power supply while the system is running on
battery power.
When AC power is cut-off, the battery automatically supplies the
system power. The sudden return of AC power at this time when
the system is running on battery may cause the battery LED to
change to red. Simultaneously, the message “Battery Fails !”
may appear on the LCD screen. When this happens, allow the
battery to recover for a while. Wait for the battery LED to return
to green and the LCD message to disappear.
If the battery LED remains red for several
seconds and the message “Battery Fails !” still
shows on the LCD screen, change the battery
or call your dealer or a technician for
assistance.
System Introduction 1-11
LCD Display Screen
tests (POST), the LCD screen shows which
After POST, the microcontroller checks the
power subsystem status. If it detects that
If the microcontroller detects that power
supply module 2 is bad, this message
If the microcontroller detects that power
supply module 3 is bad, this message
Normally, this message indicates that the
battery is bad and must be replaced with a
There are times when this message appears
for a few seconds but do not necessarily
mean that the battery is bad. Refer to the
The LCD display is a two-line by 16-character screen that indicates
the boot status as well as any BIOS check point errors encountered
upon system initialization. Normally, the system BIOS and the
microcontroller firmware send the LCD display messages that appear
on the screen. However, if you hooked up a special purpose driver to
control the LCD module, this driver define the messages. See the
driver manual for more information.
Table 1-2 lists the LCD messages from the system BIOS and the
microcontroller at power on.
Table 1-2 LCD Messages
Message Description
Hello! Welcome !
POST Checkpoints
Power #1 Fails !
Power #2 Fails !
This is the first message that appears on the
LCD screen. This message indicates that the
microcontroller works fine.
During the system power-on selfPOST check-point is currently being tested.
power supply module 1 is bad, this message
appears on the LCD screen.
appears on the LCD screen.
Power #3 Fails !
appears on the LCD screen.
Battery Fails !
new one.
previous page for these instances.
1-12 AcerAltos 19000Pro4 System Guide
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