IBM Workpad Z50 Mobile Companion Manual

16 IBM W orkPad z50, Mobile Companion 16 

W orkPad z50 Mobile Companion 17
Installing the ROM/DRAM Card
This section describes how to install the ROM card or the
optional DRAM c ard to the W orkPad z50.
Note: W hen you remove the ROM/DRAM card, you will lose
all stored data.  Before you remove the ROM/DRAM card, be
sure to bac k up all data and applic ations in the bas e
memory.
Caution: Bef ore removing or ins erting the RO M/DRAM c ard,
all power s ourc es  (AC power, the main battery pack, and the
backup batteries) must be removed.
Follow...

18 IBM W orkPad z50, Mobile Companion 18 7.  W ith the notched end of the c ard toward the right side
of the s ocket, ins ert the c ard at an angle of
approximately 20 degrees into the s oc ket; press it in
firmly as s hown  (1).  G ently pivot the c ard until it snaps
into plac e (2).
Attention
To avoid damaging the RO M/DRAM c ard, do not touc h its
contact edge.
8.  Ensure that the ROM/DRAM card is securely inserted in
the slot.
9.  Replac e the RO M/DRAM c ard c over over the memory
slot, aligning...

W orkPad z50 Mobile Companion 19 5.  Unscrew the s ingle (c aptive) screw that s ecures the
ROM/DRAM card compartment cover to the chassis.
Remove the c over.
6.  Using your fingers or a small screwdriver, press out the
two latc hes on the sides of the c ard away from the slots.
T he RO M/DRA M c ard s hould p op out s lightl y
.
Removing the DRAM
and ROM Cards
Pull the tabs in
the direction of the arrows
to release the cards.
DRAM Card
ROM Card
7.  Gently pull out the c ard.
8.  Replac e the RO M/DRAM c...

20 IBM W orkPad z50, Mobile Companion 20
Power Management Features
The power management features are des igned to s ave as
much electricity as possible by putting c omponents into a
low-power consumption mode as often as possible.  This
low-power mode is referred to as “suspend” mode.
Full Power Mode
The W orkPad z50 operates in Full power mode when power
management is dis abled and the AC Adapter is c onnec ted.
Suspend Mode
In suspend mode, the s ystem is powered off exc ept f or the
system DRAM.  The...

W orkPad z50 Mobile Companion 21
Symptom-to-FRU Index
The s ymptom-to-FRU Index lists the s ymptoms and errors
and the possible c aus es.  The most likely c aus e is listed first.
Note:P erf or m t h e FRU r ep l ac em en t or  ac t i ons  in  t h e
sequenc e shown in the “FRU/Action” c olumns.  If
a FRU replac ement did not s olve the problem, put
the original part back in the W orkPad z50.  Do not
replace a nondefective FRU.
This index can also help you determine the next possible
FRUs to be replac ed...

22 IBM W orkPad z50, Mobile Companion 22
401 LED board error
Symptom / Error FRU / Action in Sequence
401 LED board error1. LED board
2. Mainboard
5XX
501 Battery error
501 Battery error1. Battery
2. Mainboard
6XX
601 Audio playbac k error
602 Audio recording error
601 Audio playbac k error1. Speaker
2. Mainboard
602 Audio recording error1. Microphone
2. Mainboard
7XX
701 Display error
701 Display error1. LCD panel
2. Mainboard
8XX
801 Serial port test error
801 Serial port error1.  Serial cable
2....

W orkPad z50 Mobile Companion 23
Function-Related Symptoms
Symptom / ErrorFRU / ACTION IN SEQUENCE
The system does not
suspend or resume when the
LCD is closed or opened.1. Go to “Suspend Mode”
on page 20, and check
that the WorkPad z50
can enter suspend
mode.
2. LCD panel
3. Mainboard
The memory count (size)
appears different from actual
size.Go to “Memory Checkout” on
page 8.
The system hangs
intermittently.Go to “Intermittent Problems”
on page 26.
Indicator-Related Symptoms
Symptom / Error FRU /...

24 IBM W orkPad z50, Mobile Companion 24
Keyboard- or TrackPoint-Related Symptoms
Symptom / Error FRU / Action in Sequence
The keyboard (one or more
keys) does not work.1.  On the Windows
Taskbar, check that
Caps Lock or Num Lock
are not enabled.
2.  Reseat the keyboard cable
on the mainboard.
3. Keyboard
4. Mainboard
The TrackPoint does not
work.1. Check the “TrackPoint”
settings in the Control
Panel.
2.  Reseat the keyboard cable
on the mainboard.
3. Go to “TrackPoint
Checkout” on page15.
4. Keyboard...

W orkPad z50 Mobile Companion 25
Peripheral Device Related Symptoms
Symptom / Error FRU / Action in Sequence
The external monitor does
not work correctly.1.  Check that the external
monitor is enabled in the
Rapid Access utility.
2.  Check that the external
monitor can display at
640x480 and 800x600, @
75Hz refresh rate.
3. Connect the external
monitor to another PC.  If
the monitor works fine,
replace the mainboard.  If
not, replace the external
monitor.
Serial port device problems.1.  Run serial port...