Intel, Pentium, and Celeron are US registered trademarks of Intel Corporation.
Microsoft, Windows, and Windows NT are US registered trademarks of Microsoft Corporation.
Torx is a trademark of Camcar-Textron Screw & Mfg. Co.
Hewlett-Packard Company shall not be liable for technical or editorial errors or omissions contained herein. The
information in this document is provided “as is” without warranty of any kind and is subject to change without
notice. The warranties for HP products are set forth in the express limited warranty statements accompanying such
products. Nothing herein should be construed as constituting an additional warranty.
HP ProLiant ML110 Server Operations and Maintenance Guide
June 2004 (Third Edition)
Part Number 347748-003
Regulatory Model Number HSTNS-3100
Contents
About This Guide
Audience Assumptions............................................................................................................................... vii
Technician Notes........................................................................................................................................ vii
Where to Go for Additional Help.............................................................................................................. viii
Telephone Numbers............................................................................................................................ viii
Chapter 1
System Features
Features Summary..................................................................................................................................... 1-1
System Specifications................................................................................................................................ 1-3
Checking the Contents ........................................................................................................................ 3-1
Selecting a Site.................................................................................................................................... 3-1
System Setup ............................................................................................................................................. 3-2
Server Configuration................................................................................................................................ 4-28
Accessing the Setup Utility........................................................................................................................ 5-2
System Summary Screen ...........................................................................................................................5-4
To View the System Summary Screen................................................................................................5-5
System Passwords......................................................................................................................................5-5
To Set a System Password...................................................................................................................5-6
To Change a System Password............................................................................................................5-6
To Remove a System Password ..........................................................................................................5-7
To Reset a System Password...............................................................................................................5-7
Closing the Setup Utility............................................................................................................................ 5-8
BIOS Update and Recovery.......................................................................................................................5-8
To Create the BIOS Update/Recovery Diskette .................................................................................. 5-8
To Update BIOS..................................................................................................................................5-9
To Reset the BIOS Settings.................................................................................................................5-9
To Perform BIOS Recovery ................................................................................................................5-9
Diagnostics for Windows ..................................................................................................................7-11
iv HP ProLiant ML110 Server Operations and Maintenance Guide
Chapter 8
Addendum - SATA Configuration
SATA Overview........................................................................................................................................ 8-1
SATA Hot-Plug Cage Cabling .................................................................................................................. 8-1
SATA Drive Installation ........................................................................................................................... 8-2
Canadian Notice (Avis Canadien) ............................................................................................................ A-3
Class B Equipment............................................................................................................................. A-3
European Union Notice ............................................................................................................................ A-3
Japanese Notice ........................................................................................................................................ A-3
Korean MIC.............................................................................................................................................. A-4
Grounding Methods To Prevent Electrostatic Damage.............................................................................B-1
Appendix C
Power Cord Set Requirements
General Requirements ...............................................................................................................................C-1
HP ProLiant ML110 Server Operations and Maintenance Guide v
This maintenance and service guide can be used for reference when servicing
HP ProLiant ML110 servers.
WARNING: To reduce the risk of personal injury from electric shock and hazardous
energy levels, only authorized service technicians should attempt to repair this
equipment. Improper repairs can create conditions that are hazardous.
Audience Assumptions
This guide is for service technicians. HP assumes you are qualified in the servicing of
computer equipment and trained in recognizing hazard in products with hazardous energy
levels and are familiar with weight and stability precautions for rack installations.
Technician Notes
WARNING: Only authorized technicians trained by HP should attempt to repair this
equipment. All troubleshooting and repair procedures are detailed to allow only
subassembly/module-level repair. Because of the complexity of the individual boards
and subassemblies, no one should attempt to make repairs at the component level or
to make modifications to any printed wiring board. Improper repairs can create a safety
hazard.
WARNING: To reduce the risk of personal injury from electric shock and hazardous
energy levels, do not exceed the level of repairs specified in these procedures.
Because of the complexity of the individual boards and subassemblies, do not attempt
to make repairs at the component level or to make modifications to any printed wiring
board. Improper repairs can create conditions that are hazardous.
WARNING: To reduce the risk of electric shock or damage to the equipment:
• Disconnect power from the system by unplugging all power cords from the power
supplies.
About This Guide
• Do not disable the power cord grounding plug. The grounding plug is an important
safety feature.
• Plug the power cord into a grounded (earthed) electrical outlet that is easily
accessible at all times.
HP ProLiant ML110 Server Operations and Maintenance Guide vii
About This Guide
CAUTION: To properly ventilate the system, you must provide at least 7.6 cm (3.0 in.) of
clearance at the front and back of the server.
CAUTION: The server is designed to be electrically grounded (earthed). To ensure proper
operation, plug the AC power cord into a properly grounded AC outlet only.
NOTE: Any indications of component replacement or printed wiring board modifications may void any
warranty.
Where to Go for Additional Help
In addition to this guide, the following information sources are available:
• User documentation
• Service training guides
• Service advisories and bulletins
• QuickFind information services
Telephone Numbers
For the name of your nearest HP authorized reseller:
• In the United States, call 1-800-345-1518.
• In Canada, call 1-800-263-5868.
For HP technical support:
• In the United States and Canada, call 1-800-652-6672.
• Outside the United States and Canada, refer to
www.hp.com
viii HP ProLiant ML110 Server Operations and Maintenance Guide
Features Summary
1
System Features
Hardware
•
Single CPU socket that supports 478-pin Intel® processors
•
Intel 879P core logic chipset consisting of:
— 82879P – north bridge
— ICH-S – south bridge
®
•
Phoenix
•
SMSC® LPC47M192 Super I/O chipset
•
Onboard Broadcom
•
ATI® Rage™ XL chipset with 8 MB SDRAM of video memory
•
Four DIMM slots with support for:
— DDR 400 unbuffered ECC DIMMs in 256 MB, 512 MB, or 1 GB configuration
— Up to 2 DIMMs per-channel, single-sided and/or double-sided
— Byte masking on writes through data masking
— Single-bit Error Correcting Code (or Error Checking and Correcting) on the system
•
Five PCI bus slots with two separate bus channels
BIOS v4.06 chipset
®
memory interface
5705 10/100/1000 Mbps Gigabit Ethernet controller
— Two 32-bit/33 MHz 5V PCI bus slots
— Three 64-bit/66 MHz 3.3V PCI-X bus slots
•
Media storage
— 3.5-inch, 1.44 MB floppy disk drive
— IDE CD-ROM drive
HP ProLiant ML110 Server Operations and Maintenance Guide 1-1
System Features
• Optional media storage capacity
— Full-height common bay supports any paired combination of tape drive, internal
backup device, or DVD-ROM drive
— Hard disk drive cage that supports four non-hot swappable PATA (Parallel Advanced
Technology Attachment) or SCSI drives
or
— Hot-swappable drive cage that supports four SATA (Serial Advanced Technology
Attachment) drives
•
External ports, all located on the rear panel of the server. These ports are color-coded for
easy matching to corresponding I/O device.
— PS/2 keyboard port
— PS/2 mouse port
— USB ports (2)
— Monitor port
— Serial port
— Parallel port
Software
— LAN port
•
Standard autoranging 350-watts power supply unit with PFC function
•
Cooling system includes a system fan (rear panel) and a CPU fan (attached to the heat
sink)
•
NOS (Network Operating System) support includes:
— Novell
®
NetWare® 5.1
— Novell NetWare 6.0
— Novell NetWare 6.5
— Novell Small Business Suite
®
— Red Hat
Linux® 9.0
— Red Hat Enterprise Linux ES 2.1
— Microsoft Windows Server 2003 and Small Business Server 2003
•
Diagnostic tools include:
— BIOS Setup Utility
— Diagnostics for Windows
•
ACPI (Advanced Configuration and Power Interface)-compliant power management
scheme
1-2 HP ProLiant ML110 Server Operations and Maintenance Guide
System Specifications
Physical Specifications
•
Height – 430 mm (16.93 in.)
Width – 200 mm (7.87 in.)
•
Depth – 500 mm (19.69 in.)
•
Weight
•
— Basic configuration approximately 16.5 kg. (36.24 lbs) – excludes keyboard and
monitor.
— Fully loaded approximately 22 kg. (47.41lbs) – excludes keyboard and monitor.
Environmental Specifications
•
Temperature
— Operating: +10 to +35°C (+50 to +95°F)
System Features
— Non-operating: -10 to +60°C (+14 to +140°F)
•
Humidity
— Operating: 20% to 80% RH, non-condensing
— Non-operating: 20% to 90% RH, non-condensing
— Storage: 20% to 90% RH, non-condensing
Altitude
•
— Operating: -16 to 3,048 m (-50 to 10,000 ft)
— Non-operating: -16 to 10,600 m (-50 to 35,000 ft)
Thermal output
•
— Maximum operating: 1907 BTU/hr
Acoustic emissions
•
— Normal configuration: LpA: <35dBA, operating at room temperature
— Maximum configuration: LpA: <70dBA
Power Supply Requirements
Input type: AC
•
Input maximum range: 100 to 127 VAC@45/66Hz / 200 to 240 VAC@45/66Hz
•
Maximum current: 115VAC @8.0A
•
Inrush current: 80A@115AVC
•
Operating power: 350W @25°C; 320W @50°C
•
HP ProLiant ML110 Server Operations and Maintenance Guide 1-3
This chapter describes the server’s physical external and internal structure. A view of the
mainboard layout is also provided.
External Structure
Front Panel with Bezel
In the illustration below, the server is shown with both the front bezel attached (items labeled
1 through 8), and removed (items labeled 9 through 13).
2
System Structure
Figure 2-1: Front panel components
Refer to Table 2-1 on the next page for a list of front panel components.
HP ProLiant ML110 Server Operations and Maintenance Guide 2-1
System Structure
Table 2-1: Front Panel Components
Item Icon Description
1 CD-ROM drive
2 CD-ROM drive mechanical eject hole
3
4 CD-ROM drive activity indicator
5 Full-height common bays
6
CD-ROM drive eject button
Power indicator (green)
This LED indicator provides the power state
of the server.
• Steady green when the server is
operating normally.
• Blinking green when the server is in
Standby mode.
• Off when the server is powered off.
7
8
Power button
Drive activity indicator (amber)
This LED indicator shows the power state of
any IDE or SCSI device installed in the server
including CD-ROM drive(s), IDE hard disk
drives, and SCSI devices connected to the
SCSI controller board.
• Flickering amber during any IDE or SCSI
device activity.
• Off when there is no IDE or SCSI device
activity.
9 Floppy disk drive (FDD)
10 FDD activity indicator
11 FDD eject button
12 Torx® screws for the hard disk drive
(HDD) cage
13 HDD cage
2-2 HP ProLiant ML110 Server Operations and Maintenance Guide
Rear Panel
System Structure
Figure 2-2: Rear panel components
Table 2-2: Rear Panel Components
Item Icon Description
1
2
3
4
5
6
7
8 PCI slot covers
9 PSU fan
10 Power supply cable socket
11 Thumbscrews for the detachable left-side cover
PS/2 mouse port (green)
PS/2 keyboard port (purple)
Serial port (teal)
Parallel port (burgundy)
Monitor port (blue)
USB ports (black)
LAN port (RJ-45)
12 System fan
13 Retention clips for the PCI slot covers
14 Kensington® lock
HP ProLiant ML110 Server Operations and Maintenance Guide 2-3
System Structure
Internal Structure
Internal Components
Figure 2-3: Internal components
Table 2-3: Internal Components
Item Description
1 Standard autoranging 350-watts PSU
2 System fan
3 Expansion board
4 Mainboard
5 HDD cage
6 Retaining lever for the FDD
7 Retaining levers for 5 ¼” devices
2-4 HP ProLiant ML110 Server Operations and Maintenance Guide
Mainboard Components
System Structure
Figure 2-4: Mainboard components
Refer to Table 2-4 on the next page for a list of mainboard components and their
corresponding codes.
HP ProLiant ML110 Server Operations and Maintenance Guide 2-5
System Structure
Table 2-4: Mainboard Components
Item Component Code Description
1 CN3 Top: PS/2 mouse port
Bottom: PS/2 keyboard port
2 CN4 Top: Parallel port
Left: Serial port
Right: Monitor port
3 CN6 USB ports (two)
4 JK1 LAN port (RJ-45)
5 CN2 4-pin, 12V ATX power connector
6 CN1 20-pin ATX power connector
7 DIMM1 to DIMM4 DIMM slots
8 CPU FAN 3-pin CPU fan connector
9 U7 Intel 82879P chipset (north bridge)
10 U18 Intel ICH-S chipset (south bridge)
11 IDE2 Secondary IDE channel UDMA-100
12 IDE1 Primary IDE channel UDMA-100
13 SATA1 7-pin port 1 for 150-MBps SATA
14 SATA2 7-pin port 0 for 150-MBps SATA
15 FLOPPY 34-pin FDD connector
16 U27 Phoenix BIOS v4.06 chipset
17 CN11 4-pin SCSI activity LED connector
18 BT1 Battery
19 CN14 9-pin front panel I/O connector
20 SW1 Dip switch
21 BU1 Internal buzzer
22 PCI2 to PCI4 64-bit/66 MHz PCI bus slots
23 PCI1 and PCI5 32-bit/33 MHz PCI bus slots
24 U29 Video frame buffer
25 U25 ATI Rage XL VGA chipset
26 U16 Broadcom 5705 LAN chipset
continued
2-6HP ProLiant ML110 Server Operations and Maintenance Guide
Table 2-4: Mainboard Components continued
Item Component Code Description
27 U14 SMSC LPC47M192 Super I/O chipset
28 CPU CPU socket
29 SYSFAN1 3-pin system fan connector (rear)
Note: Listed in the next section are the default settings for the dip switch.
Dip Switch Settings
The table below shows the settings for the dip switch (SW1). The switch status indicated in
bold text is the default setting.
Table 2-5: DIP Switch Settings
Switch Switch Status Function
System Structure
SW1-1 On
Off
SW1-2 On
Off
SW1-3 On
Off
SW1-4 On
Off
SW1-5
SW1-6
SW1-5
SW1-6
SW1-5
SW1-6
Note: Set SW1-5 and SW1-6 to the combinations shown above to select the
operation mode for the PCI2 through PCI4 slots. Both switches, by default,
are set to the Off position, and are dependent on the card installed into each
slot.
On
On
Off
On
On
Off
Clear CMOS Enabled
Clear CMOS Disabled
Boot Block Enabled
Normal Boot
Clear Password
Enabled
Clear Password
Disabled
No FWH Protection
FWH Protection by
Software Enabled
PCI 32 / 33MHz
PCI 64 / 66MHz
PCI-X 64 / 66MHz
HP ProLiant ML110 Server Operations and Maintenance Guide 2-7
Setup Reminders
Checking the Contents
Inspect the packaging container for evidence of mishandling during transit. If the packaging
container is damaged, photograph it for reference.
Remove the server from the packaging container and, using the list below, check that all parts
and accessories are included.
•
HP ProLiant ML110 server
•
2-button PS/2 mouse
•
HP 104-key PC keyboard
3
System Setup
•
HP ProLiant ML110 Server Installation Sheet
•
HP ProLiant ML110 Server Startup CD-ROM
This Startup CD contains on-line HP documentation as well as drivers and utilities for
configuring the server.
If any of the above items are damaged or missing, contact your dealer immediately. Save the
packaging container and packing materials in the event you need to package the server for
reshipment.
Selecting a Site
Before unpacking and installing the system, select a suitable site for the system for maximum
efficiency. Consider the following factors when choosing a site for the system:
•
Near a properly grounded, three-pronged wall power outlet
•
Clean and dust-free
•
Sturdy surface free from vibration
•
Well-ventilated and away from sources of heat, with the ventilation openings on the
server kept free of obstructions
HP ProLiant ML110 Server Operations and Maintenance Guide 3-1
System Setup
• Secluded from strong electromagnetic fields and noise caused by electrical devices such
as elevators, copy machines, air conditioners, large fans, large electric motors, radio and
TV, transmitters, and high-frequency security devices
• Access space provided so the server power cords can be unplugged from the power outlet
NOTE: The power button on the system does not turn off system AC power. To remove AC power from
the system, you must unplug the server’s power cord from the power outlet. The power cord is
considered the disconnect device to the main (AC) power.
IMPORTANT: Surge suppressor is recommended. In geographic regions that are susceptible to
electrical storms, it is strongly recommended that you plug the server into a surge suppressor.
Power Supply Specification in Selecting an Installation Site
Generally, the server can handle the normal transient effect caused by an inrush current when
it is first connected to an AC power source. However, if you install several HP servers on one
circuit, precautions are necessary. If there is a power failure and power restored afterwards,
all the servers immediately begin to draw inrush current at the same time. If the circuit
breakers on the incoming power line have insufficient capability, the breaker may trip and
thus prevent the servers from powering up. When selecting a site for server installation, allow
for the additional inrush current. For more information, refer to the “Power Supply
Requirements” section in Chapter 1.
System Setup
The following sections provide instructions on connecting peripherals, as well as power
on/off procedures.
Connecting Peripherals
The server unit, keyboard, mouse, and monitor constitute the basic system. Before
connecting any other peripherals, connect these peripherals first to test if the system is
running properly. The I/O connectors are all located on the rear panel of the server. These
connectors are color-coded for easy matching.
NOTE: If you have a console switch box, refer to the documentation accompanying the switch box for
instructions on connecting the keyboard, mouse, and monitor.
To Connect a Mouse and Keyboard
PS/2 Mouse and Keyboard
CAUTION: The keyboard and mouse ports are both PS/2 ports, but are not interchangeable.
If you plug the keyboard into the mouse port, or the mouse into the keyboard port, you will get
an error message.
3-2 HP ProLiant ML110 Server Operations and Maintenance Guide
• Plug the keyboard cable into the PS/2 keyboard port (purple).
System Setup
Figure 3-1: Connecting a PS/2 keyboard
Plug the mouse cable into the PS/2 mouse port
(green). •
Figure 3-2: Connecting a PS/2 mouse
HP ProLiant ML110 Server Operations and Maintenance Guide 3-3
System Setup
USB Mouse and Keyboard
The server comes with two USB 2.0 ports. If you are going to use a USB mouse and
keyboard, plug the cables of these I/O peripherals into either USB port
(black).
NOTE: Some USB devices have a built-in USB port that allows you to daisy chain other devices.
To Connect a Monitor
• • If you are going to use a flat-panel monitor, refer to its accompanying documentation for
connection instructions.
To connect a VGA monitor, simply plug the monitor cable into the monitor port
(blue).
Figure 3-3: Connecting a USB mouse and keyboard
3-4 HP ProLiant ML110 Server Operations and Maintenance Guide
Figure 3-4: Connecting a VGA monitor
System Setup
To Connect a Printer
The server provides support for serial, parallel and USB printers.
• If you are going to use a serial printer, connect the printer cable into the serial port
(teal).
• If you are going to use a USB printer, connect the printer cable into either USB port
(black).
To connect a parallel printer, plug the printer cable into the parallel port
•
(burgundy).
Figure 3-5: Connecting a parallel printer
HP ProLiant ML110 Server Operations and Maintenance Guide 3-5
System Setup
Powering On/Off the Server
To Apply Power to the Server
After making sure that you have set up the server properly and connected all the required
peripheral cables, you can now apply power to the server.
1. Verify that the monitor is properly connected to the server and is plugged into a properly
grounded, wall power outlet.
2. Connect the server’s power cable.
Plug the power cable into the power cable socket located on the rear panel of the server.
Then plug the other end of the power cable into a properly grounded, wall power outlet.
Figure 3-6: Connecting the server’s power cable
3. Press the power button on the front panel and then turn on the monitor.
Figure 3-7: Turning on the server
3-6HP ProLiant ML110 Server Operations and Maintenance Guide
System Setup
The system starts up and loads the operating system. A welcome message is displayed. If the
system does not turn on or boot after pressing the power button, refer to the “Power
Problems” section in Chapter 6 for troubleshooting instructions.
After the welcome message display, a series of POST (Power–On Self–Test) messages
appears. The POST messages indicate if the system is running well or not. If an error
condition occurs, note any error messages appearing on the display. Go to the “POST Error
Indicators” section in Chapter 7 for more information.
Aside from the POST messages, you can determine if the system is in good condition by
checking if the following occurred:
Power indicator
•
• Num Lock, Caps Lock, and Scroll Lock indicators on the keyboard light up.
NOTE: Only the Num Lock indicator would remain lit up.
To Turn Off the Server
To turn off the server:
1. Close all open applications.
2. Use the shut down command applicable to server’s NOS.
3. When prompted, press the power button
If you want to force the server to shut down (for example if the operating system has
crashed), press and hold down the power button for approximately 5 seconds. Quickly
pressing the button may put the server in a sleep mode only.
IMPORTANT: The power supply will continue to provide standby current to the server until the power
cord is disconnected from the rear panel. When you disconnect the AC power, the server remembers
the current power state (on or off) and returns to this state when AC power is reconnected.
Sleep Modes
on the front panel lights up (green).
on the front panel.
The HP ProLiant ML110 server supports the ACPI (Advanced Configuration and Power
Interface) standard, which is a key component of a NOS’ directed power management. The
supported features are available when an ACPI-compliant NOS is installed on the server. The
term sleep mode or sleep state refers to any of several reduced power consumption states in
which normal NOS activity has ceased.
The HP ProLiant ML110 server supports two sleep modes:
• Standby
This sleep mode has a short wake-up time. During this state the server appears to be
off—the monitor appears blank and there is no CD-ROM or internal hard drive activity
(IDE or SCSI); however, the power LED displays a blinking green light and the system
fan continues to operate.
HP ProLiant ML110 Server Operations and Maintenance Guide 3-7
System Setup
• Hibernate
This sleep mode has a slower wake-up time than the Standby mode. During this state, the
server appears to be off as described earlier, but the system fan and the front panel power
LED are also turned off.
The unique feature of this sleep mode (and the reason for its slower wake-up time) is that
information about the server’s NOS state (open applications, screens, and so on) is saved
to disk before the server is placed in the sleep state. Upon wake-up, this information is
restored from disk. This method of restoring the server’s operation is much faster than a
complete rebooting of the server. It still requires running all the start-up self-tests before
starting the NOS, but loading the NOS and all the previously opened applications is much
faster.
Wake-up Events
The HP ProLiant ML110 server supports certain types of system activity, which are used as
wake-up events from sleep states. Refer to the Power
menu of the BIOS Setup Utility for a
description of these wake-up events.
For more information on configuring sleep states and wake-up events applicable to the
particular NOS running on your server refer to the HP ProLiant ML110 Server NOS Installation Guide and the Help file of your NOS.
3-8 HP ProLiant ML110 Server Operations and Maintenance Guide
This chapter provides detailed procedures for configuring the server hardware and gives an
overview of the different resources you can use to configure the system.
Review the specifications of a new component before installing it to make sure it is
compatible with the HP ProLiant ML110 server. When you integrate new components into
the system, record its model and serial number, and any other pertinent information for future
reference.
4
System Configuration
Pre- and Post-installation Procedures
Before you open the server unit to install or replace any system component, it is
recommended that you read the subsequent sections on pre- and post-installation procedures,
as well as the ESD precautions listed in Appendix B.
Pre-installation Instructions
Perform the steps below before you open the server or before you install/remove any
component:
1. Turn off the server and all the peripherals connected to it.
WARNING: Failure to properly turn off the server before you open the server or before
your start installing/ removing components may cause serious damage as well as
bodily harm.
2. Unplug all cables from the power outlets to avoid exposure to high energy levels that
may cause burns when parts are short-circuited by metal objects such as tools or jewelry.
If necessary, label each one to expedite reassembly.
HP ProLiant ML110 Server Operations and Maintenance Guide 4-1
System Configuration
WARNING: Hazardous voltages are present inside the server. Always disconnect AC
power from the server and other associated assemblies while working inside the unit.
Serious injury may result if this warning is not observed.
3. Disconnect telecommunication cables to avoid exposure to shock hazard from ringing
voltages.
4. Open the server according to the instructions described in the “System Covers” section
on the bottom of this page.
5. Follow the ESD precautions listed in Appendix B when handling a server component.
Post-installation Instructions
Observe the following items after installing or removing a server component:
1. Be sure all components are installed according to the described step-by-step instructions.
2. Check to make sure you have not left loose tools or parts inside the server.
3. Reinstall any expansion board(s), peripheral(s), board cover(s), and system cable(s) that
have previously been removed.
4. Reinstall the system covers.
5. Connect all external cables and the AC power cord to the system.
6. Turn on the server.
System Covers
The server’s left-side cover and the front bezel are both detachable. You need to remove
these system covers before you can change the hardware configuration.
NOTE: The figures used in this chapter to illustrate procedural steps are labeled numerically (i.e., 1,
2…). When these figures are used in substep items, the alphabetically labeled instructions correspond
to the numbered labels on the related figure (i.e., Label 1 correspond to step a, label 2 correspond to
step b, etc.).
CAUTION: Do not operate the server for more than ten (10) minutes with the left-side cover
and disk drives removed. Otherwise, improper cooling airflow may damage the system
components.
WARNING: In opening the server, be careful to avoid accessing the insides of the
power supply unit. The PSU has no serviceable parts. Return it to the manufacturer for
servicing.
4-2 HP ProLiant ML110 Server Operations and Maintenance Guide
Left-Side Cover
The left-side cover must be removed to access the internal components and mass storage
devices.
To Remove the Left-Side Cover
1. Perform steps 1 through 3 of the pre-installation instructions.
System Configuration
2. Detach the left-side cover from the chassis:
a. Loosen the two captive thumbscrews located on the edge of the left-side cover closest
to the rear panel.
b. Slide the cover towards the rear of the server.
c. Pull the cover upward to detach it from the chassis.
Figure 4-1: Removing the left-side cover
3. Place the cover in a safe place for reinstallation later.
WARNING: Parts inside the server may be hot; wait for them to cool before touching
them.
To Reinstall the Left-Side Cover
1. If you have been installing accessories or servicing the server, return the server to its
normal upright position.
2. Perform steps 1 through 3 of the post-installation instructions.
HP ProLiant ML110 Server Operations and Maintenance Guide 4-3
System Configuration
3. Reinstall the left-side cover:
a. Use two hands to place the left-side cover’s lower edge at an angle to the hinge tabs
along the bottom of the chassis.
The hinge tabs are keyed to accept the cover in only one position.
b. With the cover resting on the hinge tabs, tilt the cover up until it engages the locking
mechanism at the top of the chassis.
c. Slide the cover towards the front panel to position it into place.
d. Once the cover is attached to the chassis, secure it by tightening the two captive
thumbscrews.
Figure 4-2: Reinstalling the left-side cover
4. Perform steps 5 through 6 of the post-installation instructions.
Front Bezel
The front bezel must be removed to access the mass storage devices and the HDD cage.
To Remove the Front Bezel
1. Remove the left-side cover.
2. Remove the front bezel:
a. Press the two plastic retention clips on the bottom of the bezel upward to release
them from their tabs on the inside of the front chassis.
b. Tilt the bottom edge of the bezel away from the front panel to disengage it from the
chassis.
4-4HP ProLiant ML110 Server Operations and Maintenance Guide
System Configuration
c. Detach the bottom edge of the bezel from the front panel, after which
d. Pull the whole bezel away from the front panel.
Figure 4-3: Removing the front bezel
3. Place the front bezel in a safe place for reinstallation later.
To Reinstall the Front Bezel
1. Position the bezel so the two mounting tabs are aligned with their notch on the front
panel, then insert the tabs into their notch.
HP ProLiant ML110 Server Operations and Maintenance Guide 4-5
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