HP Net PC 20 Supplementary Manual
Familiarization guide
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Also See for Net PC 20:
- User manual (232 pages) ,
- Reference manual (175 pages) ,
- Getting started manual (120 pages)
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Familiarization Guide
This guide is for experienced technicians who have already
completed an HP PC family training course. It is a self-
paced training guide designed to train you to repair the PC.
It contains information specific only to the repair of these
PCs. For more information about upgrading the PC, refer
to the documentation supplied with the PC or to HP's Sup-
port Web site at http://www.hp.com/go/thinclientsupport.
HP Small PC 20
HP Net PC 20
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Table of Contents
Related Manuals for HP Net PC 20
Summary of Contents for HP Net PC 20
- Page 1 Familiarization Guide This guide is for experienced technicians who have already completed an HP PC family training course. It is a self- paced training guide designed to train you to repair the PC. It contains information specific only to the repair of these PCs.
- Page 2 Notice The information contained in this document is subject to change without notice. Hewlett-Packard makes no warranty of any kind with regard to this material, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose. Hewlett-Packard shall not be liable for errors contained herein or for incidental or consequential damages in connection with the furnishing, performance, or use of this material.
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Page 3: Table Of Contents
Care of Hard Disk Drives ........HP PC Product Comparison ....... . . - Page 4 Contents Where to Find More Information......Complete the Questionnaire to Check Your Understanding ..Answers and Explanations .
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Page 5: Electrostatic Discharge Warning
Electrostatic Discharge Warning Electrostatic Discharge (ESD) can damage processors, memory, disks, accessory boards and other components. When installing or replacing a component: 1 Do not take the new component out of its ESD package before connecting your wrist strap and ESD mat to a suitably earthed (grounded) point. 2 Do not forget to use the ESD package provided with the new part to return the old part. -
Page 6: Care Of Hard Disk Drives
Any shock may damage the drive and prevent it from functioning correctly. Hard disk drives already installed in HP PCs are also sensitive to shocks. If the PC’s system unit is knocked or dropped accidentally, this may cause damage to installed hard disk drives. -
Page 7: Hp Pc Product Comparison
HP PC Product Comparison The following table shows the product features of the HP Small PC 20 / HP Net PC 20 and the HP Vectra VE 8 PC. Component HP Vectra VE 8/xxx PC Microprocessor Intel Pentium 400 MHz, 32 KB of level-1 cache memory, 512... - Page 8 Secondary IDE (CD-ROM) cable: Standard IDE Floppy disk drive cable Note: both IDE channels are Ultra ATA System Management DMI 2.0 / SMBIOS 1.x, HP TopTools 3.0, HP DiagTools 2.0 HP Small PC 20 / HP Net PC 20 2 serial, 1 parallel with ECP/EPP, keyboard,...
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Page 9: Some Product Features
Some Product Features Intel Celeron Processor The Intel Celeron processor 333, 300A and 266 MHz provides ideal performance for applications running on operating systems such as Windows 95. All Intel Celeron processors are based on Intel’s 0.25 micron CMOS process technology. The Intel Celeron processor also benefits from the same P6 microarchitecture core as the Pentium II processor. - Page 10 Some Product Features Audio: CrystalClear The onboard CrystalClear CS4235 chip includes an integrated FM synthesizer and CS4235 Chip a Plug-and-Play interface. In addition, it includes hardware master volume control as well as extensive power management and 3D sound technology. It is compatible with the Microsoft Windows Sound System standard and will run software written to the Sound Blaster and Sound Blaster Pro interfaces.
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Page 11: Pc Package
PC Package Front View 12.7 mm Slim CD-ROM Drive Power Button Power LED Hard Disk Drive Access LED LAN Active LED Floppy Disk Drive (some models) Top View Front of PC Rear View Rear Panel Screw Adapter Panel Rear Panel Screw Power Supply Connector Power Supply Fan Rear Panel Screws... -
Page 12: System Board And Backplane
System Board and Backplane System Board and Backplane System Board Connector is on this side Backplane PCI/ISA Combination Slot Note: The HP Net PC 20 does not have an ISA slot. PCI Slot ISA Slot PCI Slot... -
Page 13: System Board Jumpers
System Board Jumpers CMOS Clear: This jumper allows you to enable or disable the CMOS clear feature. CMOS_CLR Function Normal (default) Clear CAUTION: DO NOT boot the system with the jumper in the CLEAR position. Flash ROM Type Select: These two jumpers allow you to configure the flash ROM chip. EP1, EP2 2 MB Flash ROM ATMEL AT29C020... -
Page 14: Removing And Replacing The Cover
Removing and Replacing the Cover Removing and Replacing the Cover For your safety, never remove the PC’s cover without first removing the power WARNING: cord from the power outlet, and any connection to a telecommunications network. Always replace the cover before switching on the PC again. Removing the Cover 1 Switch off the display and the PC. - Page 15 Replacing the Cover 1 Standing at the back of the PC, lower the cover onto the chassis and slide the cover forwards into position. In order to clear the chassis as you slide the cover downwards onto the PC, you may need to gently ease the sides of the cover outwards. As you slide the cover forwards into position, make sure that the clips on the inside of the cover engage properly with the top of the front panel chassis and the sides of the main chassis.
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Page 16: Removing The Front Panel Chassis
Removing the Front Panel Chassis Removing the Front Panel Chassis To gain full access to the system board you need to remove the front panel chassis. Removing the Front 1 Remove the PC’s cover as described in “Removing the Cover” on page 14. Panel Chassis 2 Using a screwdriver, remove the two screws holding the front panel chassis in place. - Page 17 Replacing the Front 1 Push the front panel chassis slightly into the main chassis. Panel Chassis CAUTION: Take great care with the cables, especially the hard disk drive data cable, when you slide the front panel chassis into the main chassis. 2 Reconnect any cables running between the front panel chassis and the system board.
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Page 18: Installing A Hard Disk Drive
Installing a Hard Disk Drive Installing a Hard Disk Drive To install a hard disk drive, take the following steps. 1 Remove the cover (refer to “Removing the Cover” on page 14). 2 Remove the front panel chassis (refer to “Removing the Front Panel Chassis” on page 16). -
Page 19: Installing A Slim Cd-Rom Drive
Installing a Slim CD-ROM Drive To install a Slim CD-ROM drive, take the following steps. 1 Remove the cover (refer to “Removing the Cover” on page 14). 2 Remove the front panel chassis (refer to “Removing the Front Panel Chassis” on page 16). - Page 20 Installing a Slim CD-ROM Drive 7 Connect one end of the CD-ROM drive cable onto the CD-ROM drive. 8 Place the front panel chassis slightly in front of the main chassis. 9 Connect the other end of the CD-ROM drive cable to the CD_ROM connector on the system board (refer to “System Board and Backplane”...
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Page 21: Installing A Slim Floppy Disk Drive
Installing a Slim Floppy Disk Drive To install a slim floppy disk drive, take the following steps. 1 Remove the cover (refer to “Removing the Cover” on page 14). 2 Remove the front panel chassis (refer to “Removing the Front Panel Chassis” on page 16). - Page 22 Installing a Slim Floppy Disk Drive 5 Slide the floppy disk drive (connected to its tray) into the front panel chassis and secure the drive in position using the 3 screws supplied with it. 4 hooks (2 on either side) to connect the floppy disk drive tray to the front panel chassis Front panel chassis Front of front...
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Page 23: Installing Memory Modules
Installing Memory Modules Inserting a Memory To install a memory module, take the following steps. Module 1 Remove the cover (refer to “Removing the Cover” on page 14). 2 Remove the front panel chassis (refer to “Removing the Front Panel Chassis” on page 16). -
Page 24: Removing And Replacing The Power Supply Unit
Removing and Replacing the Power Supply Unit Removing and Replacing the Power Supply Unit Removing the Power 1 Remove the cover (refer to “Removing the Cover” on page 14). Supply Unit 2 Disconnect the power cable from the AT_PWR connector on the system board (refer to “System Board and Backplane”... -
Page 25: Removing And Replacing The System Board
Removing and Replacing the System Board Before Replacing the If there is a problem with the PC and you think it may be due to the system board, then, before replacing the board with a new one, carry out the following checks: System Board •... -
Page 26: Support Features
21) to enable the BIOS to be flashed from a floppy disk. Once the HP Small PC 20 / HP Net PC 20 is supported by HP TopTools (which, as of October 1998, is not the case) you can use HP TopTools to flash the BIOS. For... -
Page 27: Where To Find More Information
Where to Find More Information Where to Find More Information Documentation and software can be downloaded from HP’s World Wide Web site: http://www.hp.com/go/thinclientsupport... -
Page 28: Complete The Questionnaire To Check Your Understanding
Check that you are electrostatically grounded. 3 What type of BIOS is in the HP Small PC 20 / HP Net PC 20? a A non-modified Phoenix BIOS. b An AMI BIOS with full DMI 2.0 support and all HP extensions. -
Page 29: Answers And Explanations
Check that you are electrostatically grounded. You must check all four! See page 25 for more information. 3 What type of BIOS is in the HP Small PC 20 / HP Net PC 20? d An Award BIOS. Refer to “Support Features” on page 26 for more information about the BIOS. - Page 30 Part Number : 5967-7297...