HP ProDesk 405 G1 Maintenance And Service Manual
Maintenance and Service Guide
HP ProDesk 405 G1 Microtower
© Copyright 2013 Hewlett-Packard
Development Company, L.P. The information
contained herein is subject to change
without notice.
Microsoft and Windows are U.S. registered
trademarks of the Microsoft group of
companies.
The only warranties for HP products and
services are set forth in the express warranty
statements accompanying such products and
services. Nothing herein should be
construed as constituting an additional
warranty. HP shall not be liable for technical
or editorial errors or omissions contained
herein.
This document contains proprietary
information that is protected by copyright.
No part of this document may be
photocopied, reproduced, or translated to
another language without the prior written
consent of Hewlett-Packard Company.
First Edition (November 2013)
Document Part Number: 742433-001
Product notice
This guide describes features that are
common to most models. Some features may
not be available on your computer.
Not all features are available in all editions
of Windows 8. Your computer may require
upgraded and/or separately purchased
hardware, drivers, and/or software to take
full advantage of Windows 8 functionality.
See
http://www.microsoft.com for details.
This computer may require upgraded and/
or separately purchased hardware and/or a
DVD drive to install the Windows 7 software
and take full advantage of Windows 7
functionality. See
http://windows.microsoft.com/en-us/
windows7/get-know-windows-7 for details.
About This Book
WARNING! Text set off in this manner indicates that failure to follow directions could result in bodily
harm or loss of life.
CAUTION: Text set off in this manner indicates that failure to follow directions could result in damage
to equipment or loss of information.
NOTE: Text set off in this manner provides important supplemental information.
iii
iv About This Book
Table of contents
1 Product features ............................................................................................................... 1
Standard configuration features ................................................................................................. 1
Front panel components ............................................................................................................ 2
Rear panel components ............................................................................................................ 3
Serial number location .............................................................................................................. 4
2 Activating and Customizing the Software .......................................................................... 5
Activating and customizing the software in Windows 7 ................................................................ 5
Activating the Windows operating system .................................................................... 5
Downloading Windows 7 updates .............................................................................. 6
Installing or upgrading device drivers .......................................................................... 6
Customizing the monitor display ................................................................................. 6
Activating and customizing the software in Windows 8 ................................................................ 6
Activating the Windows Operating System ................................................................... 6
Downloading Windows 8 updates .............................................................................. 7
Customizing the monitor display ................................................................................. 7
3 Illustrated parts catalog .................................................................................................... 8
Microtower chassis spare parts .................................................................................................. 8
Computer major components ...................................................................................... 8
Cables ................................................................................................................... 10
Misc parts .............................................................................................................. 11
Drives .................................................................................................................... 13
Misc boards ........................................................................................................... 13
Sequential part number listing ................................................................................... 14
4 Routine care, SATA drive guidelines, and disassembly preparation ................................. 17
Electrostatic discharge information ........................................................................................... 17
Generating static .................................................................................................... 18
Preventing electrostatic damage to equipment ............................................................. 18
Personal grounding methods and equipment .............................................................. 19
v
Grounding the work area ......................................................................................... 19
Recommended materials and equipment .................................................................... 19
Operating guidelines .............................................................................................................. 20
Routine care .......................................................................................................................... 21
General cleaning safety precautions .......................................................................... 21
Cleaning the Computer Case .................................................................................... 21
Cleaning the keyboard ............................................................................................ 21
Cleaning the monitor ............................................................................................... 22
Cleaning the mouse ................................................................................................. 22
Service considerations ............................................................................................................ 22
Power supply fan .................................................................................................... 22
Tools and software Requirements .............................................................................. 23
Screws ................................................................................................................... 23
Cables and connectors ............................................................................................ 23
Hard Drives ............................................................................................................ 23
Lithium coin cell battery ............................................................................................ 24
SATA hard drives ................................................................................................................... 24
SATA hard drive cables .......................................................................................................... 25
SATA data cable ..................................................................................................... 25
SMART ATA drives ................................................................................................................. 25
Cable management ................................................................................................................ 25
5 Removal and replacement procedures: Microtower ......................................................... 26
Preparation for disassembly .................................................................................................... 26
Access panel ......................................................................................................................... 27
Front bezel ............................................................................................................................ 28
Bezel blanks .......................................................................................................................... 29
Memory ................................................................................................................................ 31
DIMMs .................................................................................................................. 31
DDR3-SDRAM DIMMs .............................................................................................. 31
Installing DIMMs ..................................................................................................... 32
Expansion cards .................................................................................................................... 33
System board connections ....................................................................................................... 38
Drives ................................................................................................................................... 39
Drive positions ........................................................................................................ 41
Removing a 5.25-inch drive ..................................................................................... 42
Installing a 5.25-inch drive ....................................................................................... 42
Removing a 3.5-inch device ..................................................................................... 44
Installing a 3.5-inch device ....................................................................................... 46
Removing a 3.5-inch hard drive ................................................................................ 47
Installing a 3.5-inch drive ......................................................................................... 48
vi
Front I/O assembly ................................................................................................................ 51
Power switch/LED assembly .................................................................................................... 53
Speaker ................................................................................................................................ 55
Fan ...................................................................................................................................... 58
Power supply ......................................................................................................................... 59
System board ........................................................................................................................ 62
6 Computer Setup (F10) Utility ........................................................................................... 64
Computer Setup (F10) Utilities ................................................................................................. 64
Using Computer Setup (F10) Utilities .......................................................................... 65
Computer Setup—File .............................................................................................. 66
Computer Setup—Storage ........................................................................................ 67
Computer Setup—Security ........................................................................................ 69
Computer Setup—Power .......................................................................................... 71
Computer Setup—Advanced .................................................................................... 71
Recovering the Configuration Settings ....................................................................................... 72
7 Troubleshooting without diagnostics ............................................................................... 73
Safety and comfort ................................................................................................................. 73
Before you call for technical support ......................................................................................... 73
Helpful hints .......................................................................................................................... 74
Solving general problems ........................................................................................................ 76
Solving power problems ......................................................................................................... 80
Solving hard drive problems .................................................................................................... 81
Solving media card reader problems ........................................................................................ 84
Solving display problems ........................................................................................................ 85
Solving audio problems .......................................................................................................... 91
Solving printer problems ......................................................................................................... 93
Solving keyboard and mouse problems .................................................................................... 94
Solving Hardware Installation Problems .................................................................................... 97
Solving Network Problems ...................................................................................................... 99
Solving memory problems ..................................................................................................... 103
Solving processor problems ................................................................................................... 105
Solving CD-ROM and DVD problems ...................................................................................... 106
Solving USB flash drive problems ........................................................................................... 109
Solving front panel component problems ................................................................................. 110
Solving Internet access problems ............................................................................................ 110
Solving software problems .................................................................................................... 112
vii
8 POST error messages .................................................................................................... 114
POST numeric codes and text messages .................................................................................. 115
Interpreting POST diagnostic front panel LEDs and audible codes .............................................. 124
9 Password security and resetting CMOS ......................................................................... 128
Resetting the password jumper ............................................................................................... 129
Clearing and resetting the CMOS .......................................................................................... 130
10 HP PC Hardware Diagnostics ...................................................................................... 132
Why run HP PC Hardware Diagnostics ................................................................................... 132
How to access and run HP PC Hardware Diagnostics ............................................................... 132
Downloading HP PC Hardware Diagnostics to a USB device ..................................................... 133
11 System backup and recovery ...................................................................................... 134
Backing up, restoring, and recovering in Windows 8.1 or Windows 8 ....................................... 134
Creating recovery media and backups .................................................................... 134
Restoring and recovering using Windows tools ......................................................... 135
Using Reset when the system is not responding .......................................... 135
Recovery using the Windows recovery USB flash drive ............................... 136
Recovery using Windows operating system media (purchased separately) .... 136
Backing up, restoring, and recovering in Windows 7 ............................................................... 137
Creating recovery media ........................................................................................ 137
Creating recovery media using HP Recovery Manager (select models only) ... 138
Creating recovery discs with HP Recovery Disc Creator (select models only) . . 139
Creating recovery discs ............................................................ 139
Backing up your information .................................................................... 140
System Restore ...................................................................................................... 140
System Recovery ................................................................................................... 141
System Recovery when Windows is responding ......................................... 141
System Recovery when Windows is not responding .................................... 142
System Recovery using recovery media (select models only) ......................... 142
Using HP Recovery Disc operating system discs (select models only) ............. 143
Appendix A Battery replacement ..................................................................................... 145
Appendix B Power cord set requirements ........................................................................ 148
General requirements ........................................................................................................... 148
Japanese power cord requirements ........................................................................................ 148
Country-specific requirements ................................................................................................ 149
viii
Appendix C Specifications ................................................................................................ 150
Microtower specifications ...................................................................................................... 150
Index ............................................................................................................................... 152
ix
x
1 Product features
Standard configuration features
Features may vary depending on the model. For a complete listing of the hardware and software
installed in the computer, run the diagnostic utility (included on some computer models only).
Standard configuration features
1
Front panel components
Drive configuration may vary by model. Some models have a bezel blank covering one or more drive
bays.
1 5.25-inch Optical Drive (optional) 6 Microphone Connector
2 5.25-inch Half-Height Drive Bay (behind bezel) 7 Hard Drive Activity Light
3 3.5-inch Media Card Reader (optional) 8 USB 3.0 Ports (blue)
4 Dual-State Power Button 9 Headphone Connector
5 USB 2.0 Ports (black)
NOTE: The Power On Light is normally white when the power is on. If it is flashing red, there is a problem with the
computer and it is displaying a diagnostic code.
2 Chapter 1 Product features
Rear panel components
1 Power Cord Connector 7 Line-Out Connector for powered audio
2 Power Indicator Light 8 Voltage Select Switch
devices (green)
3
4
5
6
NOTE: An optional second serial port and an optional parallel port are available from HP.
The integrated graphics cannot be enabled when a discrete graphics card is installed.
PS/2 Keyboard Connector (purple) 9 PS/2 Mouse Connector (green)
Serial Connector 10 VGA Monitor Connector
DVI-D Monitor Connector 11 RJ-45 Network Connector
USB 2.0 Ports (black) 12 Line-In Audio Connector (blue)
Rear panel components
3
Serial number location
Each computer has a unique serial number and a product ID number that are located on the exterior of
the computer. Keep these numbers available for use when contacting customer service for assistance.
4 Chapter 1 Product features
2 Activating and Customizing the
Software
NOTE: This chapter provides information for both Windows 7 and Windows 8.
Activating and customizing the software in Windows 7
If your computer was not shipped with a Windows® operating system, some portions of this
documentation do not apply. Additional information is available in online help after you activate the
operating system.
CAUTION: Do not add optional hardware or third-party devices to the computer until the operating
system is successfully activated. Doing so may cause errors and prevent the operating system from
installing properly.
NOTE: Be sure there is a 10.2 cm (4 inch) clearance at the back of the unit and above the monitor to
permit the required airflow.
Activating the Windows operating system
The first time you turn on the computer, the operating system is set up and activated automatically. This
process takes about 5 to 10 minutes. Carefully read and follow the instructions on the screen to
complete the activation.
We recommend that you register your computer with HP during operating system setup so you can
receive important software updates, facilitate support questions, and sign up for special offers.
CAUTION: After the activation process has begun, DO NOT TURN OFF THE COMPUTER UNTIL THE
PROCESS IS COMPLETE. Turning off the computer during the activation process may damage the
software that runs the computer or prevent its proper installation.
NOTE: If the computer shipped with more than one operating system language on the hard drive, the
activation process could take up to 60 minutes.
Activating and customizing the software in Windows 7
5
Downloading Windows 7 updates
Microsoft may release updates to the operating system. To help keep the computer running optimally,
HP recommends checking for the latest updates during the initial installation and periodically
throughout the life of the computer.
1. To set up your Internet connection, click Start > Internet Explorer and follow the instructions
on the screen.
2. After an Internet connection has been established, click the Start > All Programs > Windows
Update.
3. Run Windows Update monthly thereafter.
Installing or upgrading device drivers
When installing optional hardware devices after the operating system installation is complete, you must
also install the drivers for each of the devices.
In Windows 7, if prompted for the i386 directory, replace the path specification with C:\i386, or use
the Browse button in the dialog box to locate the i386 folder. This action points the operating system
to the appropriate drivers.
Obtain the latest support software, including support software for the operating system, from
http://www.hp.com/support. Select your country and language, select Download drivers and
software (and firmware), enter the model number of the computer, and press Enter.
Customizing the monitor display
If you wish, you can select or change the monitor refresh rates, screen resolution, color settings, font
sizes, and power management settings.
For more information, refer to the online documentation provided with the graphics controller utility or
the documentation that came with your monitor.
Right-click on the Windows desktop, then click Personalize to change display settings.
Activating and customizing the software in Windows 8
Additional information is available in online help after you activate the operating system.
NOTE: Be sure there is a 10.2 cm (4 inch) clearance at the back of the unit and above the monitor to
permit the required airflow.
Activating the Windows Operating System
The first time you turn on the computer, the operating system is set up and activated automatically. This
process takes about 5 to 10 minutes. Carefully read and follow the instructions on the screen to
complete the activation.
6 Chapter 2 Activating and Customizing the Software
We recommend that you register your computer with HP during operating system set up so you can
receive important software updates, facilitate support questions, and sign up for special offers. You can
also register your computer with HP using the Register with HP app on the Start screen.
CAUTION: After the activation process has begun, DO NOT TURN OFF THE COMPUTER UNTIL THE
PROCESS IS COMPLETE. Turning off the computer during the activation process may damage the
software that runs the computer or prevent its proper installation.
Downloading Windows 8 updates
Microsoft may release updates to the operating system. To help keep the computer running optimally,
HP recommends checking for the latest updates during the initial installation and periodically
throughout the life of the computer.
Run Windows Update as soon as possible after you set up your computer.
1. Point to the upper-right or lower-right corner of the Start screen to display the charms.
2. Click Settings > Change PC Settings > Windows Update.
3. Run Windows Update monthly thereafter.
Customizing the monitor display
You can customize display settings for Windows 8 separately for the Start screen and the Desktop.
To customize the Start screen:
1. Point to the upper-right or lower-right corner of the Start screen to display the charms.
2. Click Settings > Change PC Settings.
3. Click Personalize to change the display settings.
To customize the Desktop:
1. Click the Desktop app on the Start screen.
2. Right-click on the desktop, and then click Personalize to change display settings.
Activating and customizing the software in Windows 8
7
3 Illustrated parts catalog
This chapter provides spare part information for all chassis.
Microtower chassis spare parts
Computer major components
Item Description Spare part number
(1) Front bezel
For use in all countries and regions except for the People’s Republic of China 745047-001
For use in the People’s Republic of China 745048-001
(2) Access panel 745046-001
8 Chapter 3 Illustrated parts catalog
Item Description Spare part number
(3) Power supply
300W, Energy Star 5.0 712298-001
300W, Energy Star 6.0 748824-001
300W, Active PFC 715184-001
300W, regular 715185-001
(4) System board (includes replacement thermal material)
NOTE: System board appearance may vary.
AMD E1-2500 processor:
AMD A4-5000 processor:
AMD A6-5200 processor:
For use in models without Windows 8 729725-001
●
For use in models with Windows 8 Standard 729725-501
●
For use in models with Windows 8 Professional 729725-601
●
For use in models with NetClone (China only) 745242-001
●
For use in models without Windows 8 729726-001
●
For use in models with Windows 8 Standard 729726-501
●
For use in models with Windows 8 Professional 729726-601
●
For use in models with NetClone (China only) 745241-001
●
For use in models without Windows 8 736168-001
●
For use in models with Windows 8 Standard 736168-501
●
Memory modules (PC3, 12800, CL11)
8-GB 689375-001
4-GB 671613-001
2-GB 671612-001
For use in models with Windows 8 Professional 736168-601
●
For use in models with NetClone (China only) 745243-001
●
Microtower chassis spare parts
9
Cables
Item Description Spare part number
(1) Front I/O assembly 745049-001
(2) Power switch/LED assembly 745050-001
SATA data cable, 14 inch, 2 straight ends 745051-001
DMS-59 to dual VGA cable 463023-001
DMS-59 to dual DVI cable 463024-001
Adapter, DisplayPort to VGA 632484-001
Adapter, DisplayPort to DVI 662723-001
Adapter, DisplayPort to HDMI 617450-001
Adapter, DVI to VGA 657401-001
Adapter, DVI-I to VGA (BFR/PVC free) 720216-001
Adapter, DVI-I to VGA (Standard) 202997-001
DisplayPort cable 487562-001
10 Chapter 3 Illustrated parts catalog
Misc parts
Item Description Spare part number
(1) Speaker 745053-001
(2) Fan
Standard 745052-001
Fan, BFR/PVC free 748825-001
(3) Parallel port, PCI card 638817-001
(4) Serial port, PCI card 638815-001
Card reader, 14-in-1, USB 3.0, 3.5-inch 716390-001
Adapter, USB 3.0 to 2.0 736835-001
Optical drive bezel blank 745036-001
HP Ultraslim Keyed Cable Lock 703372-001
Adapter, 2.5-inch hard drive 586721-001
Hard drive grommet for use on 3.5-inch drives 450712-001
Hard drive carrier, 2.5-inch to 3.5-inch 703597-001
Microtower chassis spare parts
11
Item Description Spare part number
Hard drive adapter bracket(to install 2.5” or 3.5” hard drives into 5.25 drive bay) 397117-001
WLAN antennas 583345-001
Mouse
PS2, optical 674315-001
USB, HP Elite 674318-001
Washable 724795-001
USB, optical 674316-001
USB, Portia 719901-001
Keyboards
PS/2 724718-xx1
USB 724720-xx1
USB, unbranded Katydid 729339-xx1
Smart card, CCID 701671-xx1
Wireless keyboard, mouse, and dongle kit 730323-xx1
Washable 700510-xx1
12 Chapter 3 Illustrated parts catalog
Drives
Description Spare part number
Hard drive
2 TB, 7200 rpm, 3.5 inch 747993-001
1 TB, hybrid SSD 724937-001
1 TB, 7200 rpm, 3.5 inch 747992-001
500 GB, 7200 rpm, 3.5 inch 747991-001
500 GB, hybrid SSD 724938-001
256 GB Solid-state Drive (SSD), self-encrypting (SED) 680020-001
128 GB Solid-state Drive (SSD) 665961-001
Optical drive
Blu-ray BD-RW SuperMulti XL Drive 682219-001
DVD±RW drive 690418-001
DVD-ROM drive 682550-001
Misc boards
Description Spare part number
Nvidia NVS310 PCIe x16 graphics card, 512 MB 707252-001
Nvidia NVS315 PCIe x16 graphics card, 1 GB 720837-001
AMD Radeon HD8490 DP PCIe x16 graphics card, 1 GB 717219-001
AMD Radeon HD8470 PCIe x16 graphics card, 2 GB (for use only in China) 729085-001
AMD Radeon HD8350 DH PCIe x16 graphics card, 1 GB DDR3 717220-001
AMD Radeon HD8350 PCIe x16 graphics card, 1 GB DDR3 (for use only in China) 729084-001
Nvidia GeForce GT630 DP PCIe x16 graphics card, 2 GB 702084-001
Intel PRO/1000 single port GbE NIC, includes bracket 728562-001
Intel Dual Band Wireless-N 7260 802.11 a/b/g/n (2x2) Wireless NIC 745668-001
Microtower chassis spare parts
13
Sequential part number listing
Spare part
number
202997-001 Adapter, DVI-I to VGA (standard)
397117-001 Hard drive adapter bracket (to install 2.5” or 3.5” hard drives into 5.25 drive bay)
450712-001 Hard drive grommet for use on 3.5-inch drives
463023-001 DMS-59 to dual VGA cable
463024-001 DMS-59 to dual DVI cable
487562-001 DisplayPort cable
583345-001 WLAN antennas
586721-001 Adapter, 2.5-inch hard drive
617450-001 Adapter, DisplayPort to HDMI
632484-001 Adapter, DisplayPort to VGA
638815-001 Serial port PCI card
638817-001 Printer port, PCI card
643908-001 Chassis fan
646831-001 Hard drive power cable
Description
646832-001 SATA optical drive power cable
657401-001 Adapter, DVI to VGA
660408-001 DVD±RW drive
662723-001 Adapter, DisplayPort to DVI
665961-001 128-GB Solid-state drive
671612-001 Memory module, 2-GB, PC3 12800
671613-001 Memory module, 4-GB, PC3-12800
674315-001 Mouse, PS2, optical
674316-001 Mouse, USB, optical
674318-001 Mouse, USB
680020-001 256 GB Solid-state drive, self-encrypting (SED)
682219-001 Blu-ray BD-RW SuperMulti XL Drive
682550-001 DVD-ROM drive
689375-001 Memory module, 8-GB, PC3-12800
690418-001 DVD±RW drive
700510-xx1 Washable keyboard
14 Chapter 3 Illustrated parts catalog
Spare part
number
701671-xx1 Keyboard, smart card, CCID
702084-001 Nvidia GeForce GT630 DP PCIe x16 graphics card, 2 GB
703372-001 HP Ultraslim Keyed Cable Lock
703597-001 Hard drive carrier, 2.5-inch to 3.5-inch
707252-001 Nvidia NVS310 PCIe x16 graphics card, 512 MB
712298-001 Power supply for use in the microtower, 300W, Energy Star 5.0
715184-001 Power supply for use in the microtower, 300W, Active PFC
715185-001 Power supply for use in the microtower, 300W, regular
716390-001 Card reader, 14-in-1, USB 3.0, 3.5-inch
717219-001 AMD Radeon HD8490 DP PCIe x16 graphics card, 1 GB
717220-001 AMD Radeon HD8350 DH PCIe x16 graphics card, 1 GB DDR3
719901-001 Mouse, USB, Portia
720216-001 Adapter, DVI-I to VGA (BFR/PVC free)
720837-001 Nvidia NVS315 PCIe x16 graphics card, 1 GB
Description
724718-xx1 Keyboard, PS/2, for use in models with Windows 8
724720-xx1 Keyboard, USB, black, for use in models with Windows 8
724795-001 Mouse, washable
724937-001 1 TB hard drive, hybrid SSD
724938-001 500 GB hard drive, hybrid SSD
728562-001 Intel PRO/1000 single port GbE NIC, includes bracket
729084-001 AMD Radeon HD8350 PCIe x16 graphics card, 1 GB (for use only in China)
729085-001 AMD Radeon HD8470 PCIe x16 graphics card, 2 GB (for use only in China)
729339-001 Keyboard, USB, unbranded Katydid
729725-001 System board for use in models with an AMD E1-2500 processor without Windows 8 (includes replacement
thermal material)
729725-501 System board for use in models with an AMD E1-2500 processor with Windows 8 Standard (includes
replacement thermal material)
729725-601 System board for use in models with an AMD E1-2500 processor with Windows 8 Professional (includes
replacement thermal material)
729726-001 System board for use in models with an AMD A4-5000 processor without Windows 8 (includes replacement
thermal material)
729726-501 System board for use in models with an AMD A4-5000 processor with Windows 8 Standard (includes
replacement thermal material)
Microtower chassis spare parts
15
Spare part
number
729726-601 System board for use in models with an AMD A4-5000 processor with Windows 8 Professional (includes
730323-xx1 Wireless keyboard, mouse, and dongle kit
736168-001 System board for use in models with an AMD A6-5200 processor without Windows 8 (includes replacement
736168-501 System board for use in models with an AMD A6-5200 processor with Windows 8 Standard (includes
736168-601 System board for use in models with an AMD A6-5200 processor with Windows 8 Professional (includes
736835-001 Adapter, USB 3.0 to 2.0
745036-001 Optical drive bezel blank
745046-001 Access panel
745047-001 Front bezel for use in all countries and regions except for the People’s Republic of China
745048-001 Front bezel for use in the People’s Republic of China
745049-001 Front I/O assembly
745050-001 Power switch/LED with holder
Description
replacement thermal material)
thermal material)
replacement thermal material)
replacement thermal material)
745051-001 SATA data cable, 14 inch, 2 straight ends
745052-001 Rear chassis fan, standard
745053-001 Speaker
745241-001 System board for use in models with an AMD A4-5000 processor and NetClone (China only)
745242-001 System board for use in models with an AMD E1-2500 processor and NetClone (China only)
745243-001 System board for use in models with an AMD A6-5200 processor and NetClone (China only)
745668-001 Intel Dual Band Wireless-N 7260 802.11 a/b/g/n (2x2) Wireless NIC
747991-001 500 GB, 7200 rpm SATA hard drive, 3.5 inch
747992-001 1 TB, 7200 rpm hard drive, 3.5 inch
747993-001 2 TB, 7200 rpm SATA hard drive, 3.5 inch
748824-001 Power supply for use in the microtower, 300W, Energy Star 6.0
748825-001 Rear chassis fan, BFR/PVC free
16 Chapter 3 Illustrated parts catalog
4 Routine care, SATA drive
guidelines, and disassembly
preparation
This chapter provides general service information for the computer. Adherence to the procedures and
precautions described in this chapter is essential for proper service.
CAUTION: When the computer is plugged into an AC power source, voltage is always applied to
the system board. You must disconnect the power cord from the power source before opening the
computer to prevent system board or component damage.
Electrostatic discharge information
A sudden discharge of static electricity from your finger or other conductor can destroy static-sensitive
devices or microcircuitry. Often the spark is neither felt nor heard, but damage occurs. An electronic
device exposed to electrostatic discharge (ESD) may not appear to be affected at all and can work
perfectly throughout a normal cycle. The device may function normally for a while, but it has been
degraded in the internal layers, reducing its life expectancy.
Networks built into many integrated circuits provide some protection, but in many cases, the discharge
contains enough power to alter device parameters or melt silicon junctions.
Electrostatic discharge information
17
Generating static
The following table shows that:
Different activities generate different amounts of static electricity.
●
Static electricity increases as humidity decreases.
●
Relative Humidity
Event 55% 40% 10%
Walking across carpet
Walking across vinyl floor
Motions of bench worker
Removing DIPs from plastic tube
Removing DIPs from vinyl tray
Removing DIPs from Styrofoam
Removing bubble pack from PCB
Packing PCBs in foam-lined box
These are then multi-packaged inside plastic tubes, trays, or Styrofoam.
7,500 V
3,000 V
400 V
400 V
2,000 V
3,500 V
7,000 V
5,000 V
NOTE: 700 volts can degrade a product.
Preventing electrostatic damage to equipment
Many electronic components are sensitive to ESD. Circuitry design and structure determine the degree
of sensitivity. The following packaging and grounding precautions are necessary to prevent damage to
electric components and accessories.
15,000 V
5,000 V
800 V
700 V
4,000 V
5,000 V
20,000 V
11,000 V
35,000 V
12,000 V
6,000 V
2,000 V
11,500 V
14,500 V
26,500 V
21,000 V
To avoid hand contact, transport products in static-safe containers such as tubes, bags, or boxes.
●
Protect all electrostatic parts and assemblies with conductive or approved containers or
●
packaging.
Keep electrostatic sensitive parts in their containers until they arrive at static-free stations.
●
Place items on a grounded surface before removing them from their container.
●
Always be properly grounded when touching a sensitive component or assembly.
●
Avoid contact with pins, leads, or circuitry.
●
Place reusable electrostatic-sensitive parts from assemblies in protective packaging or conductive
●
foam.
18 Chapter 4 Routine care, SATA drive guidelines, and disassembly preparation
Personal grounding methods and equipment
Use the following equipment to prevent static electricity damage to equipment:
Wrist straps are flexible straps with a maximum of one-megohm ± 10% resistance in the ground
●
cords. To provide proper ground, a strap must be worn snug against bare skin. The ground cord
must be connected and fit snugly into the banana plug connector on the grounding mat or
workstation.
Heel straps/Toe straps/Boot straps can be used at standing workstations and are
●
compatible with most types of shoes or boots. On conductive floors or dissipative floor mats, use
them on both feet with a maximum of one-megohm ± 10% resistance between the operator and
ground.
Static Shielding Protection Levels
Method Voltage
Antistatic plastic
Carbon-loaded plastic
Metallized laminate
Grounding the work area
To prevent static damage at the work area, use the following precautions:
Cover the work surface with approved static-dissipative material. Provide a wrist strap connected
●
to the work surface and properly grounded tools and equipment.
Use static-dissipative mats, foot straps, or air ionizers to give added protection.
●
Handle electrostatic sensitive components, parts, and assemblies by the case or PCB laminate.
●
Handle them only at static-free work areas.
Turn off power and input signals before inserting and removing connectors or test equipment.
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Use fixtures made of static-safe materials when fixtures must directly contact dissipative surfaces.
●
Keep work area free of nonconductive materials such as ordinary plastic assembly aids and
●
Styrofoam.
1,500
7,500
15,000
Use field service tools, such as cutters, screwdrivers, and vacuums, that are conductive.
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Recommended materials and equipment
Materials and equipment that are recommended for use in preventing static electricity include:
Antistatic tape
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Antistatic smocks, aprons, or sleeve protectors
●
Conductive bins and other assembly or soldering aids
●
Electrostatic discharge information
19
Conductive foam
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Conductive tabletop workstations with ground cord of one-megohm +/- 10% resistance
●
Static-dissipative table or floor mats with hard tie to ground
●
Field service kits
●
Static awareness labels
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Wrist straps and footwear straps providing one-megohm +/- 10% resistance
●
Material handling packages
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Conductive plastic bags
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Conductive plastic tubes
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Conductive tote boxes
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Opaque shielding bags
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Transparent metallized shielding bags
●
Transparent shielding tubes
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Operating guidelines
To prevent overheating and to help prolong the life of the computer:
Keep the computer away from excessive moisture, direct sunlight, and extremes of heat and cold.
●
Operate the computer on a sturdy, level surface. Leave a 10.2-cm (4-inch) clearance on all vented
●
sides of the computer and above the monitor to permit the required airflow.
Never restrict the airflow into the computer by blocking any vents or air intakes. Do not place the
●
keyboard, with the keyboard feet down, directly against the front of the desktop unit as this also
restricts airflow.
Occasionally clean the air vents on all vented sides of the computer. Lint, dust, and other foreign
●
matter can block the vents and limit the airflow. Be sure to unplug the computer before cleaning
the air vents.
Never operate the computer with the cover or side panel removed.
●
Do not stack computers on top of each other or place computers so near each other that they are
●
subject to each other’s re-circulated or preheated air.
If the computer is to be operated within a separate enclosure, intake and exhaust ventilation must
●
be provided on the enclosure, and the same operating guidelines listed above will still apply.
Keep liquids away from the computer and keyboard.
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20 Chapter 4 Routine care, SATA drive guidelines, and disassembly preparation
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