Manuale d’uso / di manutenzione del prodotto OmniBook 900 del fabbricante HP
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® HP OmniBook 900 Service Manual.
ii HP Om niBook 900 Notice In a continuing effort to im prove the quality of our products, technical and environm ental information in this document is subject to change without notice. This manual and any exam ples contained herein are provided “as is” and are subject to change without notice.
HP Om niBook 900 iii Contents 1. Product Inform ation .................................................................................................. 1-1 Features and Operation .......................................................................
iv HP Om niBook 900 Figures Fi gure 1-1. Om niBook - F ront View ....................................................................................................1-3 Fi gure 1-2. Om niBook - Side View ...............................................
HP Om niBook 900 v Table 3-4. POST Terminal- Error Beep Codes .................................................................................. 3-18 Table 3-5. POST Messages ............................................................................
vi HP Om niBook 900 Introduction This service m anual provides reference inform ation for the HP OmniBook 900. It is intended to be used by HP-authorized serv ice personnel in the installation, servicing, and repair of these products. The manual is designed to be self- contained.
HP Om niBook 900 Product Inf orm ation 1-1 1 Product Information The HP OmniBook 900 provides desktop- quality performance and expandability in a highly portable form. I t uses high-perform ance component technologies that make it capable of serv ing as a desktop computer that y ou can conveniently take any where.
1-2 Product Inf orm ation HP OmniBook 900 Table 1-2. Product Comparisons OmniBook 900 OmniBook 7150 OmniBook 4150 OmniBook 2100 Processor * Intel Pentium III (500 or 450 MH z), or Pentium II (300 to 400 MHz ). Pentium II (300 MH z). Pentium II (300 to 400 MHz ).
HP Om niBook 900 Product Inf orm ation 1-3 Features and Operation The following three illustrations point out the main external features of the computer. They are followed by highlights of the com puter’s operation. For an internal, exploded view, see page 4- 2.
1-4 Product Inf orm ation HP OmniBook 900 Turning the Omni Book On and Off • On. Press the blue power button to turn on the OmniBook. • Standby . The display turns off autom atically if the computer is inactiv e for about 2 minutes.
HP Om niBook 900 Product Inf orm ation 1-5 Checking the Status of the OmniBook The main OmniBook status lights, located at the front- right edge of the display bezel at the top of the display, indicate power status and driv e activity. (These lights are on the motherboard.
1-6 Product Inf orm ation HP OmniBook 900 Using Fn Hot Key s The Fn key combined with another key is a hot key—a shortcut key sequence for v arious sy stem controls. F or an external key board, CTRL+AL T is normally equivalent t o the F n key. Table 1-6.
HP Om niBook 900 Product Inf orm ation 1-7 Sy stem Resources The tables in this section show ty pical resource usage as set up by the Om niBook BIOS. Plug-and- play operating sy stems, drivers, and BI OS Setup settings may change som e of the entries.
1-8 Product Inf orm ation HP OmniBook 900 Table 1-9. System Input/Output A ddresses (100-3FF) 120-127 Audio (OmniBook 900† only) 170-177 Internal CD -ROM drive (secondary IDE controller) 1F0-1F7 Int.
HP Om niBook 900 Product Inf orm ation 1-9 Specifications The following tables list descriptions for the OmniBook and its accessories. Table 1-11. OmniBook 900 Specif ications Phy sical Attributes Models with 12-inch display Notebook size: 11.8 x 8.8 x 1.
1-10 Product Infor mation HP Om niBook 900 Input/Output FDD/IDE interface for ex ternal module bay. Universal serial bus (USB). 9-pin, 115,200-bps serial (16550 UART). 25-pin bi-directional ECP/EPP parallel. Video -out (Resolution: up to 1280×1024×256 colors, or up to 1600×1200×64K colors for Omnibook 900B.
HP Om niBook 900 Product Inf orm ation 1-11 Table 1-12. O mniBook 900 A ccessories Accessory D escription OmniBook Compatibility 900B 900† 4150 2100/7100 Memory F1456A 32-MB SD RAM (66 MH z) ex pans.
1-12 Product Infor mation HP Om niBook 900 Accessory D escription OmniBook Compatibility 900B 900† 4150 2100/7100 F1761B M PEG DVD decoder PC Card •• • TCM 3C589 10-Mbps Ethernet PC Card by 3C.
HP Om niBook 900 Product Inf orm ation 1-13 Internal Design The motherboard PCA is the central component of the Om niBook design. It play s a role in virtually all system functions. The CP U module and m ost other subsystems connect to the m otherboard.
1-14 Product Infor mation HP Om niBook 900 Table 1-13. Functional Structure Bootup CPU module Motherboard BIOS IC Floppy disk module Hard disk drive Main processor. Primary sy stem circuitry. Code for basic system functions. First source of disk-based startup code.
HP Om niBook 900 Removal and Replac ement 2-1 2 Removal and Replacement This chapter tells you how to remov e and replace the following com ponents and assemblies.
2-2 Rem oval and Replacem ent HP OmniBook 900 Notes Reassem bly steps are the reverse of the rem oval steps. Reas sem bly notes are included at the end of each s ection below. Sy mbols like this throughout this chapter show approxim ate full-s ize screw outlines.
HP Om niBook 900 Removal and Replac ement 2-3 Remov ing the Battery (User-Replaceable) Required Equipment • None. Removal Procedure 1. Unplug the ac adapter, if present. 2. Slide the battery’s front panel to the right. 3. Pull the battery out of the bay .
2-4 Rem oval and Replacem ent HP OmniBook 900 Reassembly Notes • If y ou are installing a new battery, first snap the correct panel onto the front of the battery . For a 12-inch display , use the flat battery panel—for a 13-inch display , use the curved battery panel.
HP Om niBook 900 Removal and Replac ement 2-5 Remov ing a RA M Board (User-Replaceable) Table 2-4. RAM Board Replacement Part Numbers Description Part Number Exchange OmniBook Part Number 900B 900† .
2-6 Rem oval and Replacem ent HP OmniBook 900 Figure 2-3. Removing a RA M Board Reassembly Notes • Insert the RAM board into the connector at about a 30° angle until it is fully inserted. Then press down at both sides until both latches snap closed.
HP Om niBook 900 Removal and Replac ement 2-7 Removal Procedure 1. Unplug the ac adapter, if present, and remov e the battery. 2. Turn the unit bottom side up and rem ove the hard drive screw from the bottom case. 3. Open the hard drive door, then pull out the hard drive by its plastic tab.
2-8 Rem oval and Replacem ent HP OmniBook 900 Reassembly Notes Caution Do not cover the vent hole in the top sur face of the hard drive. If you cover the hole, the hard drive could fail pr ematur ely . • The small plastic tabs on the connector face the top of the driv e, and the metal shield fits behind the tabs.
HP Om niBook 900 Removal and Replac ement 2-9 Replacing Small Parts (User-Replaceable) The following small parts are user- replaceable. Table 2-6. Replacing Small Part s (User-Replaceable) Part Replacement Procedure Battery panel Remove the battery, then tw ist the upper edge of the panel off the battery.
2-10 Removal and Replac ement HP Om niBook 900 Remov ing the LCD Module (HP Authorized Service Prov iders Only) Exchange Information W hen returning a bad LCD m odule to HP, describe the s y m ptom s on a piec e of paper and attach it to the part—do not use tape.
HP Om niBook 900 Removal and Replac ement 2-11 7. For a 12-inch display , remov e the LCD m odule. a. Remov e the four screws holding the L CD module. b.
2-12 Removal and Replac ement HP Om niBook 900 Reassembly Notes • For the 12-inch display , make sure the L CD module and flex cable have sm all foam pads present to ensure good connections: Two pads on the back of the L CD module on the internal connections near the top- left and bottom- left corners.
HP Om niBook 900 Removal and Replac ement 2-13 Figure 2-7. Removing the Keyboard Reassembly Notes • To connect the flex cables, lay the keyboard upside- down on the front section of the top case. • F old the keyboard back into place. Slip its front tabs into the slots, then snap the back edge into place.
2-14 Removal and Replac ement HP Om niBook 900 Remov ing the CPU Module (HP Authorized Service Prov iders Only) Required Equipment • Small Phillips screwdriver. • Small plastic blade for pry ing, such as an angled plastic tweezers (OmniBook 900† only).
HP Om niBook 900 Removal and Replac ement 2-15 Caution: O m ni Book 900B Follow these precautions to pr event damage to the CPU c onnector: • Use only a 4.0-4.5 mm flat-blade s crewdriver to releas e the CPU. • Use only enough force to lock the CPU m odule.
2-16 Removal and Replac ement HP Om niBook 900 Caution: O m ni Book 900B Follow these precautions while installing the CPU m odule to prevent dam age to the CPU connector: • Place the CPU m odule on the connector c arefully. Align the arrow on the upper right corner of the CPU module with the m atching arrow on the connec tor.
HP Om niBook 900 Removal and Replac ement 2-17 Figure 2-9. Removing the Display A ssembly Reassembly Notes • F or a 12-inch display , the flex cable wraps around the post only about 1/2 turn. • F or a 12- or 13-inch display , insert the display power wires into the notch in the top case before installing the hinge cover.
2-18 Removal and Replac ement HP Om niBook 900 Remov ing the Top Case (HP Authorized Service Prov iders Only) Required Equipment • Small Phillips screwdriver. Removal Procedure 1. Unplug the ac adapter, if present, and remov e the battery. 2. Remove these additional assem blies: • Hard disk drive (page 2- 6) • Key board (page 2-12).
HP Om niBook 900 Removal and Replac ement 2-19 Figure 2-10. Removing the Top Case Reassembly Notes Note: Installing a New Top Case • Trans fer the f ollowing items f rom the old top case to the new one: Touc h pad and support. Left hinge suppor t. • Press down on the touch pad s upport plate while sliding it into place.
2-20 Removal and Replac ement HP Om niBook 900 Note For an Om niBook 900 with a 12-inch display and serial number bef ore TW 92500000, if the top case has been dam aged by excessive pres sure above th.
HP Om niBook 900 Removal and Replac ement 2-21 10. Lift the front of the m otherboard about 7 cm (3 inches), then slide the motherboard forward until it comes out of the bottom case.
2-22 Removal and Replac ement HP Om niBook 900 Reassembly Notes Note: Installing a New Moth erboard • If a RAM board is present, transf er it fr om the old m otherboar d to the new one: • Reprogram the BIOS IC—see the note below. • Store the serial num ber and k eyboard lay out electr onically in the new m otherboar d—see the steps below.
HP Om niBook 900 Removal and Replac ement 2-23 Figure 2-12. Installing PCMCIA Door s Storing the Serial Number and Key board Layout Electronically 1. Exit Windows and boot to a DOS prompt. For Window s 95/98, press F8 during reboot and select Com mand Prompt Only .
2-24 Removal and Replac ement HP Om niBook 900 2. Carefully cut out the new serial label just inside the border and place it into the inner recess in the bottom case. The bottom of the label goes toward the front of the case. 3. While holding the paper label in place, attach a serial label overlay into the outer recess.
HP Om niBook 900 Removal and Replac ement 2-25 Figure 2-14. Removing the BIOS IC Reassembly Notes Caution • Align the IC with the slot in the sock et. The IC is k eyed to fit correctly. If y ou insert the IC back ward, the IC or mother board could be dam aged.
2-26 Removal and Replac ement HP Om niBook 900 Remov ing Other Components (HP Authorized Service Prov iders Only) Required Equipment • Small Phillips screwdriver. • Pointed knife or probe (for display com ponents). • Small flat- blade screwdriver (for display com ponents).
HP Om niBook 900 Removal and Replac ement 2-27 Table 2-8. Removing Display Components Component Removal Procedures Additional Steps (See figure on page 4-6) Bezel, display Remove the display bezel (see page 2-10). Cable, display flex (12-inch display) Keyboard (page 2-12).
2-28 Removal and Replac ement HP Om niBook 900 Table 2-9. Removing T op Case Components Component Removal Procedures Additional Steps (See figure on page 4-2) Case, top See page 2-18. Key board See page 2-12. Support, touch-pad Hard drive (page 2-6). Keyboard (page 2-12).
HP Om niBook 900 Removal and Replac ement 2-29 Component Removal Procedures Additional Steps (See figure on page 4-2) Heatsink Keyboard (page 2-12). Remove the eight screws (O mniBook 900†) or six screws and tw o springs (OmniBook 900B) from the heatsink and lift off the heatsink.
2-30 Removal and Replac ement HP Om niBook 900 Component Removal Procedures Additional Steps (See figure on page 4-2) Support, hinge (right) Hard drive (page 2-6). Keyboard (page 2-12). Display (page 2-16). Top case (page 2-18). Remove the screw holding the right hinge support near the back-right corner, then lift out the support.
HP Om niBook 900 Troubles hooting and Diagnostics 3-1 3 Troubleshooting and Diagnostics This chapter includes troubleshooting and diagnostic information for testing the functionality of the OmniBook and identify ing faulty m odules: • Troubleshooting information Troubleshooting the problem (page 3- 2).
3-2 T roubleshooting and Diagnostic s HP OmniBook 900 Troubleshooting The suggestions in this section can help isolate and repair the cause of a problem. To ensure quality repair, HP recommends that y ou follow the basic troubleshooting steps shown in the illustration below.
HP Om niBook 900 Troubles hooting and Diagnostics 3-3 • Consider Causes. Keep in m ind possible causes for each problem. Use the diagnostic tools and troubleshooting suggestions to help find possible causes.
3-4 T roubleshooting and Diagnostic s HP OmniBook 900 Suggestions for Tr oubl eshooti ng Table 3-1. Scope of Diagnostic Tools Function OmniBook Diagnostics Powe r-On Self-Test Sy card PCCtest 450 DMI/.
HP Om niBook 900 Troubles hooting and Diagnostics 3-5 If y ou can’t isolate the cause of a problem using the diagnostic tools, you can use the suggestions in the following table to help find the problem.
3-6 T roubleshooting and Diagnostic s HP OmniBook 900 Sy mptom Call Center: Suggestions Repair Center: Likely Causes Repair Center: Comments Sluggish startup or shutdown Run ScanD isk and Disk Defragmenter to check and optimize the hard drive. Delete temporary and unneeded files.
HP Om niBook 900 Troubles hooting and Diagnostics 3-7 Sy mptom Call Center: Suggestions Repair Center: Likely Causes Repair Center: Comments W hite display Adjust display brightness. LCD module. Motherboard. Erratic display LCD flex cable or connections.
3-8 T roubleshooting and Diagnostic s HP OmniBook 900 Sy mptom Call Center: Suggestions Repair Center: Likely Causes Repair Center: Comments Key board Some or all keys do not work properly Keyboard. Motherboard. BIOS IC. Try reinserting the flex cable in the connector on the motherboard.
HP Om niBook 900 Troubles hooting and Diagnostics 3-9 Sy mptom Call Center: Suggestions Repair Center: Likely Causes Repair Center: Comments Audio Sound does not play Check settings in BIOS Setup. Increase sound volume (Fn+UP and software controls). Check whether mute is activ e (Fn+F7 and software controls).
3-10 Troubles hooting and Diagnostics HP Om niBook 900 Sy mptom Call Center: Suggestions Repair Center: Likely Causes Repair Center: Comments PCMCIA General problems M ake sure Card Executive is installed for W indows NT. If the card requires an IRQ, check that there is one available.
HP Om niBook 900 Troubles hooting and Diagnostics 3-11 Sy mptom Call Center: Suggestions Repair Center: Likely Causes Repair Center: Comments Computer pauses or runs sluggishly May be normal W indows behavior (background processing can affect response time).
3-12 Troubles hooting and Diagnostics HP Om niBook 900 Diagnostic Tools This section describes the following diagnostic tools y ou can use for troubleshooting and repairing the OmniBook: • OmniBook hardw are diagnostic program (below). • Power-on self-test (page 3- 18).
HP Om niBook 900 Troubles hooting and Diagnostics 3-13 Running the Diagnostic Test 1. If y ou’re using a diagnostic floppy disk, insert it in the floppy driv e—or press F10 in the next step. 2. Reboot the OmniBook. 3. Go through the first several screens.
3-14 Troubles hooting and Diagnostics HP Om niBook 900 Note that the serial and parallel port tests are more thorough if y ou connect a loop-back connector to the port before running the test for that port. See the wiring diagrams below . 14 1 25 13 6 1 9 5 Figure 3-3.
HP Om niBook 900 Troubles hooting and Diagnostics 3-15 Code Suggestions 0180h For 01FFFFFFh (OB900†) or 03FFFFFFh (OB900B) and below, replac e t he mot herboard. Above that, replace the RA M board (eac h 01000000h represents 16MB). 0181h Replac e t he CP U module.
3-16 Troubles hooting and Diagnostics HP Om niBook 900 Code Suggestions 03CCh Run BIOS Setup and c heck t he f loppy drive type. Rerun the t es t with another f l oppy di s k. Replace the f l oppy dri ve. Replace the mot herboard. 03EEh - 03FFh Check t he c onnec tors on t he f loppy drive, external module bay, and m otherboard.
HP Om niBook 900 Troubles hooting and Diagnostics 3-17 Code Suggestions 1202h - 1203h Replace the m otherboard. 1205h - 1206h Insert a di f ferent P C Card. Repl ac e the PCMCIA soc ket. Repl ac e the m ot herboard. 1207h Reboot t he c omput er. Replace the mot herboard.
3-18 Troubles hooting and Diagnostics HP Om niBook 900 Pow er-On Self-Test Note If Quiet Boot is enabled in BIOS Setup (the default s etting), press ESC during boot to see POST mes sages. The PO ST (Power-On Self-Test) is a series of initialization routines and diagnostic tests that the system BIOS runs when the computer boots.
HP Om niBook 900 Troubles hooting and Diagnostics 3-19 Message Description 0211 Key board error Keyboard not working. 0212 Key board Control l er Fai l ed Keyboard control l er f ailed tes t . May require replaci ng k eyboard c ontroller. 0213 Key board l o cked - Unl o ck key switch Unlock t he system to proc eed.
3-20 Troubles hooting and Diagnostics HP Om niBook 900 Message Description Entering SET UP... Starti ng S etup program Failing Bits: nnnn The hex number nnnn is a m ap of the bit s at t he RA M addres s which failed t he m em ory t es t. Each 1 (one) in t he m ap indic at es a fail ed bi t .
HP Om niBook 900 Troubles hooting and Diagnostics 3-21 Sy card PCCtest 450 CardBus Car d (Opti onal ) The PCCtest 450 CardBus Card (version 1.05) available from Sy card Technology is an optional diagnostic tool. It is the only recommended tool that tests the functionality of the P CMCIA slots using a PCMC IA card.
3-22 Troubles hooting and Diagnostics HP Om niBook 900 Desktop Management Interface (DM I) The Desktop Management Interface (DMI) is an industry -standard program API for accessing information about a personal com puter.
HP Om niBook 900 Troubles hooting and Diagnostics 3-23 manufacturers, including Hewl ett-Packard, to define a standard method of m anaging the physical and logical components of personal com puters.
3-24 Troubles hooting and Diagnostics HP Om niBook 900 BIOS Setup Ut ility The BIOS Setup utility provides access to basic configuration settings. I t is independent of the operating system . Running the BIOS Setup Utility 1. Close all applications, then shut down Windows and reboot the OmniBook.
HP Om niBook 900 Troubles hooting and Diagnostics 3-25 Sy stem Devices Menu Default PS/2 Pointing Devices Sets w hether internal pointing devices are automatically disabled when an ex ternal PS/2 pointing device is detected, or whether both internal and ex ternal devices are active.
3-26 Troubles hooting and Diagnostics HP Om niBook 900 Internal Hard Disk Drive Lock If boot security is enabled, sets w hether a password is stored on the hard disk. Secures data on the disk if the disk is moved to another computer. Disabled Removable Dev ice Boot Sets w hether the floppy drive or other remov able device is a boot device.
HP Om niBook 900 Replaceable Parts 4-1 4 Replaceable Parts This chapter contains an exploded view of the Om niBook and the following lists of parts: • OmniBook replaceable parts (page 4- 3). • Assembly -component breakout (page 4- 7) • Accessory replacem ent parts (page 4-7).
4-2 Replac eable Parts HP Om niBook 900 Figure 4-1. Exploded View Display components (see page 4-5)..
HP Om niBook 900 Replaceable Parts 4-3 Table 4-1. O mniBook Replaceable Parts Description Part Number Exchange User OmniBook Part Number Repl. 900B 900† Assembly, ex ternal module bay F1711-60901 Ye.
4-4 Replac eable Parts HP Om niBook 900 Description Part Number Exchange User OmniBook Part Number Repl. 900B 900† 18 Fan (13") F1770-60917 • Foot F1711-60931 Yes •• 19 Heatsink (with the.
HP Om niBook 900 Replaceable Parts 4-5 Description Part Number Exchange User OmniBook Part Number Repl. 900B 900† 34 Speaker (13") F1770-60916 • 41 Spring, Heatsink F1769-60904 • 35 Standof.
4-6 Replac eable Parts HP Om niBook 900 Figure 4-2. Display Components Note : 12-inch display shown. For a 13-inch display, the flex cable and mountings differ.
HP Om niBook 900 Replaceable Parts 4-7 Table 4-2. Assembly - Component Breakdown Assembly Part Number Components Part Numb e rs Incl. Case, bottom (all) Door, HDD (12”) (all) No Door, module bay con.
4-8 Replac eable Parts HP Om niBook 900 Description Part Number Exchange User OmniBook Part Number Repl. 900B 900† Monitor stand (short) F1453-60901 Yes Monitor stand (tall) F1477-60936 Y es •• .
HP Om niBook 900 Replaceable Parts 4-9 Table 4-4. Part Number Reference Part Number Exchange Description User OmniBook Part Number Repl. 900B 900† 0950-2790 Adapter, ac (60W ) Yes • 0950-3409 F1711-69100 Drive, hard disk (4.3GB , 9.5mm, IBM) * Yes • 0950-3410 F1386-69102 Drive, hard disk (4.
4-10 Replaceable Parts HP Om niBook 900 Part Number Exchange Description User OmniBook Part Number Repl. 900B 900† F1451-60901 Port replicator Yes F1452-60901 M ini dock Yes F1452-60909 Tray, standa.
HP Om niBook 900 Replaceable Parts 4-11 Part Number Exchange Description User OmniBook Part Number Repl. 900B 900† F1711-60934 Screw, M 1.4×4mm (tapping) •• F1711-60935 Standoff, M 2×9mm hex (.
4-12 Replaceable Parts HP Om niBook 900 Part Number Exchange Description User OmniBook Part Number Repl. 900B 900† F1769-60907 Fan (12") •• F1769-60908 F1769-69008 PCA, Motherboard • F176.
HP Om niBook 900 Replaceable Parts 4-13 Part Number Exchange Description User OmniBook Part Number Repl. 900B 900† F1770-60917 Fan (13") • F1770-60918 Door, HDD (13") • F1770-60919 Cas.
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HP Om niBook 900 Referenc e Inform ation 5-1 5 Reference Information This chapter includes the following reference information: • Password removal policy . • Display quality statement. Passw ord Remova l Policy If the user forgets the sy stem password, the user calls Technical Support to determine the proper remov al procedure.
5-2 Ref erence Infor mation HP Om niBook 900 Hew l ett-Packard Display Quality Statement TFT display manufacturing is a high precision but imperfect technology and manufacturers cannot currently produce large display s that are cosmetically perfect. Most, if not all, TFT display s will exhibit some level of cosm etic imperfection.
HP Om niBook 900 Referenc e Inform ation 5-3 Table 5-1. OmniBook 900 LCD G uidelines (TFT ) Ty pe of Imperfection Imperfections Not A llowed IBM 12" TFT, SVGA Electrical Imperfections: Bright dots (a) Dark dots (a) • 6 or more single bright dots.
5-4 Ref erence Infor mation HP Om niBook 900 Ty pe of Imperfection Imperfections Not A llowed Unipac 13" TFT, XGA Electrical Imperfections: Bright dots (a) Dark dots (a) • 9 or more single bright dots. • 10 or more single dark dots. • 18 or more total bright and dark dots.
HP Om niBook 900 Referenc e Inform ation 5-5 Obsolete Parts Obsolete repair parts are summarized in the following table. Table 5-2. O bsolete Repair Parts Obsolete Part Number New Part Number Descript.
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1. Product Inform ation 2. Rem oval and Replacement 3. Troubleshooting and Diagnostics 4. Replaceable Parts 5. Reference Inform ation Part Number F1770-90001 Printed in U.
Un punto importante, dopo l’acquisto del dispositivo (o anche prima di acquisto) è quello di leggere il manuale. Dobbiamo farlo per diversi motivi semplici:
Se non hai ancora comprato il HP HP OmniBook 900 è un buon momento per familiarizzare con i dati di base del prodotto. Prime consultare le pagine iniziali del manuale d’uso, che si trova al di sopra. Dovresti trovare lì i dati tecnici più importanti del HP HP OmniBook 900 - in questo modo è possibile verificare se l’apparecchio soddisfa le tue esigenze. Esplorando le pagine segenti del manuali d’uso HP HP OmniBook 900 imparerai tutte le caratteristiche del prodotto e le informazioni sul suo funzionamento. Le informazioni sul HP HP OmniBook 900 ti aiuteranno sicuramente a prendere una decisione relativa all’acquisto.
In una situazione in cui hai già il HP HP OmniBook 900, ma non hai ancora letto il manuale d’uso, dovresti farlo per le ragioni sopra descritte. Saprai quindi se hai correttamente usato le funzioni disponibili, e se hai commesso errori che possono ridurre la durata di vita del HP HP OmniBook 900.
Tuttavia, uno dei ruoli più importanti per l’utente svolti dal manuale d’uso è quello di aiutare a risolvere i problemi con il HP HP OmniBook 900. Quasi sempre, ci troverai Troubleshooting, cioè i guasti più frequenti e malfunzionamenti del dispositivo HP HP OmniBook 900 insieme con le istruzioni su come risolverli. Anche se non si riesci a risolvere il problema, il manuale d’uso ti mostrerà il percorso di ulteriori procedimenti – il contatto con il centro servizio clienti o il servizio più vicino.
