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HP Omnibook Xtvt6200 Service Manual

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    							HP Omnibook XT6050, XT/VT6200 Reference Information 5-1
    5 
    Reference Information
    This chapter includes the following reference information:
     
    • Password removal policy.
     
    • Display quality statement.
    Password Removal Policy
    If the user forgets the system password, the user calls Technical Support to determine the proper
    removal procedure. The user must provide proof of ownership, and the Omnibook must be operated
    during the procedure.
    The password removal procedure is protected as HP Company Private information. There are a
    restricted number of locations that can perform password removal. It may not be disclosed or
    distributed outside those locations.
    Password removal is strictly controlled. Hewlett-Packard and authorized support providers must
    ensure with written evidence that the Omnibook being “cleansed” is actually in the possession of the
    unit’s actual and current owner. This requires a sales receipt showing the unit serial number and
    owner’s name, or a written statement from the owner attesting that he or she is the owner of the unit.
    The statement can be a fax copy of the document. The fact that the unit is in the hands of an HP
    representative on behalf of the customer is not evidence of ownership. In addition, HP will not remove
    the password of a unit for any non-owner, even if it is requested by law enforcement agencies. If you
    receive such a request, you should notify management and HP Corporate Legal immediately. (These
    requests may require a court order prior to our participation.)
    Further, the entity removing the password must log the name, serial number and date of the removal,
    and file the written backup with the log. The log and backup are subject to standard record retention
    process and review.
    The final issue relating to removal of passwords is that HP cannot provide information to users that
    would assist them in improperly removing a password and opening a unit. 
    						
    							5-2 Reference Information HP Omnibook XT6050, XT/VT6200
    Hewlett-Packard Display Quality Statement
    TFT display manufacturing is a highly precise but imperfect technology, and manufacturers cannot
    produce large displays that are cosmetically perfect. Most, if not all, TFT displays exhibit some level
    of cosmetic imperfection. These cosmetic imperfections may be visible to the customer under varying
    display conditions, and can appear as bright, dim, or dark spots. 
    This issue is common across all
    vendors supplying TFT displays in their products and is not specific to the HP Omnibook display.
    HP Omnibook TFT displays meet or exceed all HP standards for cosmetic quality of TFT displays.
    HP does not warrant that the displays will be free of cosmetic imperfections. 
    TFT displays can have a
    small number of cosmetic imperfections and still conform to HP’s cosmetic quality specifications.
    Here are some guidelines for determining what action to take on customers’ complaints of cosmetic
    imperfections in their TFT displays:
     1.
     View the unit under the customer’s normal operating conditions.
     This means that if the customer uses the unit predominately in DOS, in Windows, or in some
    other application or combination of applications, you should make the determination under those
    same applications. Self test is not a normal operating condition and is not a sufficient tool for
    interpreting display quality.
     2.
     Use the table below to determine whether the display should be considered for replacement.
    These are the only conditions in this guideline that may call for a replacement due to a defect in
    material or workmanship based on the HP Limited Warranty Statement.
     3.
     If a display is considered for replacement, make sure the customer understands that cosmetic
    variations may also exist on the replacement display, and may require the customer to use a work-
    around to obscure the cosmetic imperfection.
     4.
     Customers with cosmetic-based complaints that do not conform to the above conditions and tests
    will not normally be considered for display replacement. The HP-responsible person working with
    the customer should identify work-arounds that are reasonable and appropriate for the individual
    customer. Customers who must have a more perfect display solution should consider switching to
    an Omnibook with a DSTN display.
    We expect that over time the industry will continue to produce displays with fewer inherent cosmetic
    imperfections, and we will adjust our HP guidelines as these improvements are implemented. 
    						
    							HP Omnibook XT6050, XT/VT6200 Reference Information 5-3
      Table 5-1. Omnibook XT6050 and XT/VT6200 LCD Guidelines
    Type of ImperfectionImperfections Not Allowed
    Electrical Imperfections:
    Bright dots 
    (a)
    Dark dots (a)
     
    • 7 or more single bright dots.
     
    • 7 or more single dark dots.
     
    • 9 or more total (bright and dark combined) defective dots.
     
    • Any occurrence of multiple defective dots within 15 mm.
    Mechanical Imperfections:
    Discoloration
    Polarizer bubbles, dents 
    (b)
     
    • Any polarizer bubble, discoloration, or dent that is visible from at least
    36 cm (14 in).
    Definitions of imperfections:
    aBright or dark dot: a subpixel (red, green, or blue dot) that is stuck on or off.
    bPolarizer dent or bubble: a light spot with a darker border that appears on a lighted display and does not
    change size. (In contrast, a polarizer scratch is a light line that is visible on a darker background and does
    not change size.) 
    						
    							5-4 Reference Information HP Omnibook XT6050, XT/VT6200
    Service Notes
    Service notes containing important repair information for Technology Codes EF, EG will be issued as
    needed. These notes are available online at the Partnership web site—see page vi. 
    						
    							Part Number
    F4506-90026Printed in U.S.A. 4/02 
    						
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