Memory; Sound; Power Management - Packard Bell EasyNote NM85 Service Manual

Memory

Symptom / Error
Memory count (size) appears different from
actual size.

Sound

Symptom / Error
No sound comes from the notebook when
running Windows multimedia programs.
The internal speakers make noise or emit no
sound.

Power management

Symptom / Error
The notebook will not hibernate.
The system doesn't hibernate and emits four
short beeps every minute.
The notebook doesn't enter standby mode after
closing the LCD.
The system doesn't resume from hibernation
mode.
The system doesn't resume from standby mode
after opening the LCD.
The battery fuel gauge in Windows doesn't go
higher than 90%.
The system hangs intermittently.
110
CHAPTER 4: Troubleshooting
Action in Sequence
Run "Load Setup Defaults" using the BIOS Setup Utility, then reboot
the notebook.
Test or replace the SO-DIMM.
Test or replace the system board.
Action in Sequence
Reinstall the audio driver.
Test or replace the speakers.
Test or replace the system board.
Test or replace the speakers.
Test or replace the system board.
Action in Sequence
Test or replace the keyboard (if control is from the keyboard).
Test or replace the hard disk drive.
Test or replace the system board.
o
Press Fn+ and see if the notebook enters hibernation mode.
Test or replace the touchpad.
Test or replace the keyboard.
Check the hard disk connection to the system board.
Test or replace the hard disk drive.
Test or replace the system board.
Make sure that the magnet is in the magnet holder. For more
information, see
Test or replace the system board.
Check the hard disk connection to the system board.
Test or replace the hard disk drive.
Test or replace the system board.
Make sure that the magnet is in the magnet holder. For more
information, see
Test or replace the system board.
Remove the battery pack and let it cool for two hours.
Refresh the battery (use only battery power until the notebook turns
off, then charge the battery).
Test or replace the battery pack.
Test or replace the system board.
Reconnect the hard disk drive and optical drive.
Check the hard disk connection to the system board.
Test or replace the system board.
"Replacing the LCD panel" on page
"Replacing the LCD panel" on page
83.
83.