Symptom

Call Center

Likely Cause

Comments

 

 

 

(in order)

 

 

 

 

 

correctly.

 

 

 

Keyboard

 

 

 

 

 

Keyboard errors —

∙ Send in for repair

∙ PT-586

∙ Damaged U10

 

2 characters on a

 

∙ PT-DC

∙ Shorted pins on

 

keystroke instead

 

∙ Keyboard

connectors

 

of one

 

 

 

 

 

Keyboard errors —

∙ Send in for repair

∙ PT-DC

∙ Possible bad connector

 

no response from

 

∙ PT-586

solder joints

 

key(s)

 

∙ Keyboard

 

 

 

Keyboard doesn’t

∙ Send in for repair

∙ PT-586

∙ Damaged U10

 

respond, audio

 

 

 

 

 

slow, battery

 

 

 

 

 

problems

 

 

 

 

 

Unit Hangs or

 

 

 

 

 

Won’t Boot up

 

 

 

 

 

Won’t boot up &

∙ Verify known good

∙ PT-CPU

∙ Swap with reference CPU

 

no display

power source

∙ RAM module

to check. Replace

 

 

∙ Push reset button

∙ PT-DC

original CPU if not fixed.

 

 

∙ Try pulling RAM

∙ PT-586

∙ Make sure RAM is seated

 

 

module and re-

∙ PT-ICON

properly — remove and

 

 

inserting

 

re-install to check.

 

 

∙ Send in for repair

 

 

 

 

Unit hangs at

∙ Eliminate any s/w

∙ PT-586

∙ Possible burnt R92 hangs

 

Win95 screen

configuration conflicts

 

up audio IC

 

during boot

∙ Send in for repair

 

 

 

 

Unit locks up after

∙ Run BIOS upgrade

∙ PT-ICON

∙ Corrupt EEPROM — run

 

2-3 minutes

program

 

BIOS upgrade

 

 

∙ Send in for repair

 

 

 

 

Unit goes into

∙ Send in for repair

∙ PT-586

∙ Damaged U10

 

suspend after

 

 

 

 

 

“Bridge controller”

 

 

 

 

 

message, won’t

 

 

 

 

 

resume

 

 

 

 

 

TrackPoint/Cursor

 

 

 

 

 

Cursor pointer

∙ It is normal for the

∙ Keyboard and

∙ Be sure keyboards are

 

drifts slightly.

cursor to drift slightly

palmrest.

tested with the correct

 

 

as the circuit does

 

palmrest. The latest

 

Cursor pointer

a self calibrate every

∙ Mismatched

TrackPoint sensor (CTS)

 

“flying” or drifting

once in a while

palmrest and

must match up with a

 

excessively.

∙ Send in for repair.

keyboard pair

CTS palmrest.

 

 

 

 

Mismatched keyboards

 

 

 

 

and palmrests result in

 

 

 

 

the cursor moving

 

Cursor moves in

 

 

in the opposite direction

 

the opposite

 

 

of intended movement.

 

direction of

 

 

∙ Refer to Service Note

 

TrackPoint

 

 

5500-04.

 

 

movement

 

 

 

 

 

Miscellaneous

 

 

 

 

 

Loses time

∙ Plug AC adapter into

∙ PT-586 Philips

∙ Refer to Service Note

 

 

unit and let it charge

IC

5500-01for IC problem

 

 

for at least 24 hours.

 

 

 

 

 

 

 

 

 

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