IBM Workpad Z50 Mobile Companion Manual

							26 IBM W orkPad z50, Mobile Companion 26
Intermittent Problems
Intermittent s ystem hang problems  c an be c aus ed by a
variety of reasons that have nothing to do with a hardware
defect, such as: cosmic radiation, electrostatic discharge, or
software errors.  FRU replac ement s hould be c onsidered
only when a rec urring problem exists.
W hen analyzing the intermittent problem, do the f ollowing:
1. Run the diagnostic test f or the mainboard in loop
mode.
2. If no error is detected, do not replac e any FRUs.
3. If any error is detected, replace the FRU shown by
the FRU code.  Rerun the test to verif y that no more
errors exist.
Undetermined Problems
You are here bec aus e the diagnostic tests did not identif y
which adapter or devic e f ailed, installed devic es are
inc orrect, a short c ircuit is suspected, or the s ystem is
inoperative.  Follow thes e proc edures to is olate the f ailing
FRU (do not isolate nondefective FRUs).
Verif y that all attac hed devic es are supported by the
W orkPad z50.
Verif y that the power supply being us ed at the time of the
failure is operating c orrectly.  (See “Power Sys tems
Checkout” on page 9.)
1. Enter suspend mode.
2. Visually check them f or damage.  If any problems are
found, replac e the FRU.
3. Remove or disc onnec t all of  the f ollowing devic es:
a. Non-IBM devic es
b. Devic es attac hed to the cradle
c. External devices
d. Battery pack
e. DRAM
f. PC Cards
g. Compact Flash Cards
4. Turn on the W orkPad z50.
5. Determine if the problem has changed.
6. If the problem does not reoccur, reconnect the
removed devic es one at a time until you find the
failing FRU.
7. If the problem remains, replace the f ollowing FRUs
one at a time.  Do not replac e a nondef ec tive FRU.
a. Mainboard
b. LCD ass embly 
						

							W orkPad z50 Mobile Companion 27
Running the Diagnostics
The following table lists the s pecial tools us ed in the
diagnostics:
Tool Name FRU P/N
Serial wrap c onnec tor 05K2846
PCMCIA wrap c ard 35G 4703
CompactFlas h wrap c onverter 05K2845
Use either the TrackPoint or the curs or move keys to interac t
with the tests.  The Enter key works the same as selecting
the OK ic on to reply OK.
1. Click Start, then Run.  In the Run” dialog window
Open box, type “\W indows\ibmdiag.exe”.  Click OK.
The bas ic diagnos tic menu appears.
2. Start the Advanced Diagnostic test by pressing
Ctrl+A on the basic diagnostic menu.  The Serial and
PC Card devic es will appear on the diagnos tic menu.
3. Click on a device to run the test.  The test progress
window appears.  A confirmation message box will
appear after exiting each test: click Yes if the test
ends without any errors.
PC Card Slot Test
Insert the PCMCIA wrap card into the PC card slot f or the
PCMCIA test: insert the CompactFlash wrap converter into
the CompactFlash slot f or the CompactFlash slot test.  Ref er
to the previous s ection, “Running the Diagnos tics” to run the
tests. 
						

							28 IBM W orkPad z50, Mobile Companion 28
UUID
A UUID (universal unique ID) is uniquely assigned to each
system board f or s ys tem management purpos es.  The UUID
is stored on the EEPRO M on the board.
Related Service Procedures
This section provides inf ormation about the following:
·
 “Status Indic ators and Control Buttons”
·
  “Applic ation Launching Key Assignments” on page 29
Status Indicators and Control Buttons
The s ystem status indic ators show the current W orkPad z50
status in different c olors (green and amber).  The c ontrol
buttons—1.
Notification, 3.Microphone, and 5.Power—are
shown in the illustration below.
Indicator Color M eaning
1. Notification Amber
The s ystem is rec eiving a
transf er c all.  Push the
Notific ation button to stop
the transfer.
Green The battery is fully
charged or the
rechargeable battery pack
is abs ent (s ee “Power
Systems Chec kout” on
page 9).5. External
Power/Charge
Status (this LED
is on whenever
the AC Adapter
is connected)
Amber Battery charging
(see “Power Sys tems
Checkout” on page 9)
To rec ord a mess age, pus h the Microphone button; the
Voice Recorder window will appear.  Click the Record button
to start rec ording; click the Stop button to stop rec ording.
There is no rec ord LED. 
						

							W orkPad z50 Mobile Companion 29
Application Launching Key Assignments
The applic ations keys  are programmed to launc h pres et
software applic ations.  The following table shows the
applic ation keys and their c orresponding functions:
Key Description
A1 Launch or s witch to the W indows CE Inbox
A2
Launch W indows Explorer or s witch to next
Explorer W indow
A3 Launch or s witch to Calendar
A4 Launch or s witch to Contacts
A5 Launch or s witch to T as ks
A6
Launch Poc ket W ord or switch to next Poc ket
W ord window
A7 Launch Poc ket Exc el or s witch to next Poc ket
Exc el window
A8 Launch Poc ket PowerPoint or s witch to next
Pocket PowerPoint window
A9
Launch Poc ket Acc ess or s witch to next
Pocket Access window
A10 Launch or s witch to Calc ulator
A11 Launch or s witch to Voic e Rec order
A12 Launch or s witch to Rapid Acc ess
To view the applic ation keys and their c orresponding
functions, clic k on the Launching Keys ic on in the Control
Panel to bring up the “Launching Keys Properties” window. 
						

							30 IBM W orkPad z50, Mobile Companion 30
Removing and Replacing Defective FRUs
This section provides inf ormation on removing and replacing
FRUs.
·
  Do not damage any part.  Only certified and trained
pers onnel should s ervic e the W orkPad z50 Mobile
Companion.
·
 The arrows in the “Removals and Replac ements”
section show the direction of movement to remove a
FRU, or to turn a screw to release the FRU.  The
arrows are marked in numeric order, in square
callouts, to show the c orrect s equenc e of removal.
·
  When other FRUs must be removed before the failing
FRU is removed, they are listed at the top of the
page.
·
  To replac e a FRU, revers e the removal proc edure
and f ollow any notes that pertain to replac ement.
·
  W hen replac ing a FRU, us e the c orrect screw size as
shown in the proc edures.
Safety Notice 1: Translation on page viii
Bef ore the W orkPad z50 is powered-on after FRU
replacement, make sure all screws, springs, or other
small parts are in plac e and are not left loos e inside the
W orkPad z50.  Verif y this by shaking the W orkPad z50
and listening f or rattling s ounds.  Metallic parts or metal
flakes c an c aus e electric al shorts.
Safety Notice 2: Translation on page ix
The battery pack c ontains small amounts of harmful
substances.  Do not disassemble it, throw it into fire or
water, or short-circuit it.  Dispose of the battery pack or
backup battery as required by local ordinances or
regulations.  Us e only the battery in the appropriate parts
listing when replac ing the battery pac k.  Us e of an
inc orrect battery c an res ult in ignition or explos ion of the
battery.
Safety Notice 6: Translation on page xi
Before removing any FRU, place the W orkPad z50 into
suspend mode, unplug all power c ords from electric al
outlets, then disconnect any interconnecting cables and
remove the battery pac k and bac kup batteries.
CAUTION:
If all power sources are removed from the WorkPad z50,
all data and applications will be lost.  If the problem is
considered a software problem stored on DRAM
memory, approach the problem from that standpoint
before removing all power sources.
Attention:  The mainboard is s ensitive to, and c an be
damaged by, electrostatic discharge. 
						

							W orkPad z50 Mobile Companion 31 An electrostatic discharge (ESD) strap (P/N 6405959) must
be us ed to establish pers onal grounding. 
						

							32 IBM W orkPad z50, Mobile Companion 32
Important Notice
The W orkPad z50 Mobile Companion us es spec ial nylon-
coated screws with the f ollowing c harac teristics:
·
  They maintain tight c onnec tions.
·
  They do not easily c ome loos e, even with shoc k or
vibration.
But:
·
  They need additional forc e to tighten.
·
  They s hould be us ed only onc e.
Do the f ollowing when you s ervic e this mac hine:
·
  Keep the screw kit (P/N 05K5941) in your tool bag.
·
  Always us e new screws.
·
  Use a torque screwdriver.
Screw Information:  The f ollowing types of screws are us ed
in this mac hine.  Us e the c orrect screw in the Screw Kit
(P/N 05K5941) when replac ing any FRUs.
Screw
No.Screw Type
of
HeadColor Length
(mm)
3Flat
M2.5Black 4.0/6.0
5Flat Silver 5.0
6Pan
M2.0Silver 4.0/6.0
7Flat
M2.5Black 8.0 
						

							W orkPad z50 Mobile Companion 33
Unplugging and Plugging Flexible Cables:
Two types of c able and c onnec tors are us ed in the W orkPad
z50.  Some c onnec tors have a c lasp, which must be
unlocked before removing the cable.  Unlock the connector
by pulling up the clas p with your fingernail or a small flat-
tipped screwdriver.  Then pull out the c able from the
connec tor.  Ref er to the following illustrations: 
						

							34 IBM W orkPad z50, Mobile Companion 34
Removal reference
The chart below s hows the order f or removing FRUs.  W hen
a FRU has  been removed, f ollow the arrows to the FRU (or
FRUs) that can be removed next.
1010 Backup Batteries
1020 RO M/DRAM Card
1030 Battery Pack
1040 Keyboard Assembly
1050 Bottom Cover
1060 Mainboard
1070 LCD Bezel
1080 LCD Unit
1090 Inverter Card and LCD
Panel
1120 Speaker
1130 Microphone
1150 PC Card Slot Assembly
1170 Hardware Button Board
1110 FPC Assembly
1160 RJ-11 Ass embly
1180 T op Cover 
						

							W orkPad z50 Mobile Companion 35
1010  Backup Batteries
1.Turn the W orkPad z50 upside down.
Step Size (Quantity) Color Torque Length
2
Coin screw
M2.5 (1)Black 3 kgcm 4.0 mm
Note:  You c an loos en the c aptive screw in step 2
, but
cannot remove it from the bac kup battery c over.