Symptom

White display

Erratic display

Bright or missing pixels or lines

Hard disk

Hard disk never spins

Hard disk makes clunking or scratching noise

Hard disk makes buzzing or whining noise

Files are corrupted

Drive capacity is less than normal

Toshiba hard disk runs sluggishly

Call Center:

Suggestions

Adjust display brightness.

See quality statement on page 5-2.

Check the power source.

Remove and reinsert the hard drive. Check the contacts.

Back up the drive immediately.

Was the computer or drive dropped?

Back up the drive immediately.

Check for alternate noise sources, such as a PCMCIA drive or fan.

If a keystroke causes the sound to change, it may be power supply noise.

Run a virus scan program.

Check the disk surface by running ScanDisk (Windows

95)or Disk Administrator (Windows NT). Or boot to DOS and run CHKDSK to look for problems, run CHKDSK /f to fix.

Use Recovery CD to restore original factory software.

Check the disk surface by running ScanDisk (Windows

95)or Disk Administrator (Windows NT).

Check partitions using FDISK (Windows 95) or Disk Administrator (Windows NT).

Remove the drive from the computer. If the drive is fully exposed in the HDD case (a metal shield is not present), check whether it is a Toshiba drive.

Repair Center:

Likely Causes

LCD module.

Inverter PCA.

LVDS PCA.

LCD cables or connections.

LCD module.

LCD module.

LCD cables or connections.

Hard drive or contacts.

Motherboard.

Hard drive case (flex cable).

Hard drive.

Depends on the source of the noise.

Hard drive.

Hard drive.

HDD case.

Repair Center:

Comments

See quality statement on page 5-2.

If the drive case is damaged, it can prevent proper operation.

Check the flex cable for wear.

Check the computer and drive for evidence of customer abuse.

Use same suggestions shown at left.

Use same suggestions shown at left.

Recreate the Hibernate partition, then partition and format the disk.

If the hard drive is fully exposed in the HDD case (the metal top shield is not installed), install a new case with shield if the drive is a Toshiba drive.

HP OmniBook 2100/3000/3100

Troubleshooting and Diagnostics

3-7