HP Omnibook 300 425 430 530 Service Manual

35Parallel Port ProblemsStart: Problem with 
parallel portProblem with 
Laplink Remote? YesPhysical 
inspection: 
Cable 
connected? 
Cable pins OK?NoTroubleshoot 
Laplink RemoteClean boot: 
Ctrl Alt Del, 
press F5 during bootSee 
Windows?Exit to DOSUse PRN 
command to 
print a filePrints file 
OK?Other printer available?Attach OB and 
use PRN 
command to 
print file on 
different printerPrints file 
OK?Done: Suspect bad 
printer or cableRun OB self-test diagnostics: 
CDIAG or 
OBTEST, 
depending on...

36Parallel Port Problems (continued)ASelf-test 
OK?Done: Bad OB 
base unitReconfirm: 
Printer plugged 
in? 
On? On line? Attach printer to 
desktop PCClean boot to DOS on desktop PC: 
Ctrl Alt Del, 
press F5 during 
bootPRN prints 
file OK?Done: Suspect 
original OB badDone: Suspect bad 
printer or cable Yes
YesNo
No 

37Serial Port ProblemsStart: Problem with 
serial portProblem with 
Laplink Remote? YesPhysical 
inspection: 
Cable 
connected? 
Bent pins? 
Cable appears 
OK?NoTroubleshoot 
Laplink RemoteLoopback 
connector 
available?Connected to 
what? 
Modem? 
Printer? 
Other?Install loopback 
connectorRun OB self-test procedureSelf-test 
OK?Done: Serial port 
OKDone: Suspect bad 
serial port in OB 
base unitA YesNo YesNo 

38Serial Port Problems (continued)Ensure proper 
default serial 
port 
configurationSerial port 
works OK?Can you 
eliminate all potential software conflicts?Eliminate 
software 
conflictsSerial port 
works OK?Plug another device and cable into serial portsSerial port 
works OK?Done: Suspect 
original device or 
cable badDone: Suspect bad 
OB base unit serial 
portADoneDone YesNo
No
No
No Yes
Yes Yes 

39PCMCIA ProblemsStart: PCMCIA card
problemKnown issue
with this card?Has card ever
worked? NoDetermine type of
cardSeek additional
information on
cardRemove card
(with power on or
off)Visually inspect
card:
Connectors bent?
Damaged?
Wet?Inspection
reveals
problems?Done: Suspect bad
PCMCIA cardReinsert cardBHas any software been
loaded or modified
since card worked?Suspect software
configuration
problemANo
No
No Yes
Yes
Yes
Yes 

40PCMCIA Problems (continued)AClean boot:
Ctrl Alt Del, press
F5 during bootRun OB self-testSelf-test
OK?Suspect bad cardHP card?Done: Contact card
vendorDone: Return card
to HPBPress Ctrl Alt DelSee Windows
display?See DOS
prompt?Exit to DOS
promptRemove card and
run CARDINFOExit to DOS
promptInterpret
CARDINFO
resultsC NoDone: Software
configuration or setup
problemNo
No
No YesYes
Yes
Yes 

41PCMCIA Problems (continued)CHardware
problem?Done: Suspect bad
OB base unitSoftware
problem?Check CONFIG.SYS
and AUTOEXEC.BATDoneInsert card in top
slotRun CARDINFOInsert same card
in bottom slotRun CARDINFOInterpret resultsHardware
problem in both
slots?Suspect bad cardCard is HP
device?Done: Contact
card vendorDone: Replace
cardDNo
No
No
NoYes
Yes
Yes
Yes 

42PCMCIA Problems (continued)DHardware
problem in one
slot only?Done: Suspect bad
OB base unitSoftware
problem in both
slots?Software
problem in one
slot only?Done: Suspect software
configuration problemDoneSeek further
information -
consult with
Technical
SupportNo
No Yes
Yes
YesNo 

43IR Port ProblemsStart: Problem with 
infrared (IR) portProblem with 
Laplink Remote? YesPhysical 
inspection: 
IR port not 
covered? 
Painted over? 
Obscured?NoTroubleshoot 
Laplink RemoteEnsure 
operating 
distance within 
specification (1 
meter or less)Ensure 
operating environment OK:  Not next to 
bright or 
oscillating light?Clean boot: 
Ctrl Alt Del, 
press F5 during 
bootRun OB self-testRun IR self-test 
in proper 
environmentIR self-test 
OK?Done: Suspect 
software problemMove OB to 
different...