DOWNLOAD Panasonic CF-W4HWEZZBM Service Manual ↓ Size: 8.4 MB | Pages: 64 in PDF or view online for FREE

Model
CF-W4HWEZZBM
Pages
64
Size
8.4 MB
Type
PDF
Document
Service Manual
Brand
Device
PC / PERSONAL COMPUTER
File
cf-w4hwezzbm.pdf
Date

Panasonic CF-W4HWEZZBM Service Manual ▷ View online

4.2. Troubleshooting
17
The power indicator  or bat-
tery indicator is not lit
The computer does not op-
erate when a USB device is
connected
[Enter  Password] is displayed
POST  Star tup  Error (s) is
displayed
Windows  startup, or an op-
eration is extremely slow
The date and time are incor-
r ect
When  r esuming fr om  the
standby  or  hibernation
mode,  [Enter  Password]
does not  appear  even if  a
password has been set in the
Setup Utility
When  “Invalid  system disk.
Replace the disk, and  then
pr ess any  key.”  (or  a simi-
lar message) is displayed
Check the cable connection for the AC adaptor.
Check to see if a fully charged battery is properly inserted.
Remove the battery pack and disconnect the AC adaptor , then connect them again.
The computer may not operate when certain USB  devices are connected. Disconnect
 the 
USB device, or set [
 Legacy USB Support] to [ Disable] in [ Advanced] menu of the Setup
Utility .
Input your Supervisor Password or User Password.  If you have forgotten it, contact your
technical support o
ffice.
Press       F9       in the Setup Utility. This will restore the Setup Utility’s settings to their 
default values (except the password settings).  Then, the Setup Utility must be run once 
again for  you to input  the appropriate  operating  environment  settings.  
(The processing speed depends on the application software used, so this operation may
 not cause the processing speed to increase. )
If operations slow down during streaming playback, try changing the number of colors of
the display .
You can set the date and time using the following menu:
Windows XP
[start]  - [Control  Panel] - [Date,  Time, Language, and Regional  Options]  - [Date  and
Ti me]
If you continue to experience problems, the internal battery maintaining the clock may
need to be replaced.  Contact your technical support office.
  When the computer is connected to a LAN, confirm the date and time of the server .
  This computer will not correctly recognize the date and time starting from the year 2100
A.D.
Even when a password has been set in the Setup Utility , [ Enter Password ] does not
appear when  t he computer  resumes from the standby or hibernation mode.
If you want to use the security function when using the standby or hibernation mode, use
the Windows password as follows:
   Windows XP
Select  the account to change in [start] - [ Control Panel ] - [ User Accounts] and set the
password, then add the check mark for [Prompt for password when computer resumes
from standby] in [ Control Panel ] - [ Performance and Maintenance ] - [ Power Options] -
[ Advanced ].
This means a floppy  disk  that does not contain  system startup information has  been left  in
the floppy disk drive.  Remove the floppy disk, and press any key .
This message may appear when certain USB devices are connected.  Remove the USB
device, or set [ Legacy USB Support ] in [ Advanced ] menu of the Setup Utility to [ Dis-
able ].
If  the message still appears even after  trying  the above two  measures, this  may be an
indication that some type of hard disk failure has occurred.  Contact your technical sup-
port office.
When a problem occurs, refer to this page.  The “Reference Manual”  also contains detailed information.   If a problem appears to be
related to a software  application,  read the software  related manual.  If  you still  cannot troubleshoot  the problem,  contact your
technical  support office. You can use  the PC Information  Viewer  to check the computer’s usage status.
 Star ting Up
18
18
W hen  the  administrator
password is forgotten
When the previous  item is
not 
 the cause
Set the password again in the following procedure.
  Windows XP
If you have created a password reset disk, a message is displayed when you fail to 
correctly enter the password. Follow the message’ s instructions and set the password 
again by using the password reset disk.
If you have not created a password reset disk, after reinstalling, setu
p Windows and then
set the password again.
Press   F9     in the Setup Utility.    This  will  restore the Setup Utility’s
  settings to their 
default values (except the password settings).
Try removing all peripheral devices.
Check a disk error using the following procedure.
Display [Local Disk (C:) Properties].
Windows XP
Select [Local  Disk(C:)]  with  the right  button  in  [start]  - [My  Computer],  and select
[Properties] .
Select [Tools] - [Check Now].
Select [Start] after selecting required items in [Check disk options].
At startup, hold down
     F8    when [Panasonic] boot screen disappears, and release your
finger  when the Windows  Advanced  Option  Menu  is displayed.   Start the computer  in
Safe Mode, and confirm the details of the error.
 Starting Up
 (continued)
No display after powering on
The  power  has not  been
turned  off, but after  a cer-
tain period of time, there  is
no display
W hen the battery  pack  is
used, the sc
reen is darker
than when the AC  adaptor
is connected
The  cursor cannot be con-
trolled properly
When there is no display to an external display ,
• Check your cable connection to the external display
  .
• C onfirm your display is powered on.
• Check the settings for your external display .
The display destination may be set to the external display .
Try changing the display destination by pressing     Fn    +   F3    .
If you want to switch the display destination repeatedly by pressing    Fn    +   F3    , make
sure that the display destination has switched completely each time before pressing
  Fn    +   F3    again.
Has the computer been set to the power-saving mode?
    To resume operation of your computer from the condition the power of the display is off
(for energy conservation purposes), press any key unrelated to the direct triggering of
 a
selection, like    Ctrl    .
To save power, your computer may have automatically entered the standby mode (power
indicator blinks green) or hibernation mode (power indicator turns off).  In such cases,
slide the power switch.
Press   Fn    +   F2    and adjust the brightness.  Note, however, that when the brightness is
increased, the battery running time will become shorter .
Brightness can be set to separate levels for when the AC adaptor is connected and when
it is disconnected.
If you are using an external mouse, ensure that the external mouse has been connected
correctly .
Restart the computer by using the keyboard (Press   
   ,      , and select [Restart] wit
h
  
                    , then press    Enter    ).
If the computer does not respond to keyboard commands, read “No  response”.
 Display
19
 Display
 (continued)
An afterimage appears (e.g.,
green, r ed, and  blue  dots
remain  on the display)  or
there ar e dots not display-
ing the correct colors
The  screen becomes disor-
dered
The  external  display  no
longer displays properly
During  simultaneous  dis-
play, the screen of the  exter-
nal  display becomes  disor-
dered
When  an  M PEG  file  is be-
ing  played  with Media
Player, the display  destina-
tion cannot be switched us-
ing
Fn    +   F3
Application  is not displayed
properly,  or characters
 are
garbled
If an image is displayed for a prolonged period of time, an afterimage may appear . This
is not a malfunction.  The afterimage will disappear when a different screen is displayed.
High-precision and advanced  technologies are necessary in the production of color liquid
crystal displays (color LCDs).   
Therefore, if 0.002% or less of the picture elements either
fail to light or remain constantly lit  (that is, more than 99.998% of  elements are function-
ing properly), no defect is considered to exist.
Changing  the number of  colors  or resolution  of  the display  may affect  the screen. Restart
the computer.
When  an external display not compatible with the power saving mode is used with the
computer, the display  may not function  correctly  when the computer  enters the power
saving mode.  In such cases, turn off the power to the external display .
Try changing the display by pressing     Fn    +    F3    .
If you continue to experience problems, try changing the display destination in the fol -
lowing menu:
Windows XP
[start] - [ Control Panel ] - [ Other Control Panel Options] - [ Intel (R)  
 Extreme Graphics] -
[ Devices]
The display destination cannot be switched while an MPEG file is playing.  Stop playing
the MPEG file before switching the display destination.
Is the application a non-Unicode program? 
When non-Unicode programs are run on
Windows XP, you must select the language appropriate to that program.
Set [ Language for non-Unicode programs] in [ Control Panel ] - [ Date, Ti me, Language,
and Regional Options] - [ Regional and Language Options] - [ Advanced] .
Note that only a user with the administrator authority can change this setting.
 Battery Indicator
The red indicator lights
The red indicator blinks
The orange indicator blinks
The battery level is very low (the charge is less than approx. 9% capacity).
Connect the AC adaptor . You can use the computer when the indicator light is orange. If
you do not have an AC adaptor, save your data and power of f your computer. After
replacing the battery pack with a fully charged one, turn your computer on.
Quickly save your data and power off your computer . Remove the battery pack and dis-
connect the AC adaptor , then connect them again.
If the problem persists, contact your technical support office. Possible failure in
failure  in the battery pack or charging circuit.
Battery cannot be recharged temporarily because the internal temperature of the battery
pack is outside of the acceptable temperature range for recharging. Once the allowable
range requirement  is satisfied, charging  begins automatically. Your  computer can be used
normally in this state.
W indows cannot be shut
down or restarted
 Shutting Down
If a USB device is connected, try removing it.
W hen starting  Sound Re-
corder, it displays the mes-
sage: “Ther e was an error
updating the registry.”
 Sound
Sound Recorder displays this error message when started by a user with a limited  account
if the user’s language setting  is different  to that of  the user  with  administrator  authority
which last started it .
This will not affect the operation of the computer .
20
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