400 Series
2-7
Procedure 2
Battery Icon Check
The Battery icon shows the battery charging status. The Battery icon, identified by a battery
icon on the front of the computer, glows orange when the AC power cord is charging the 400
series battery pack.
If the Battery
icon glows green, the AC power cord is connected and the battery is fully
charged.
If the Battery
icon glows orange, the AC power cord is connected and the battery is being
charged.
If the Battery
icon does not glow, go to Check 1.
Check 1
Make sure the AC power cord is firmly plugged into the AC IN socket and wall
outlet. If these cables are connected correctly, go to Check 2.
Check 2
Make sure the battery pack is installed in the computer correctly. If the battery
pack is installed correctly, go to Check 3.
Check 3
Remove the battery pack and check that the battery and system board terminals
are clean and not bent.
If the battery and/or system board terminal appears dirty, clean it/them gently with
a cotton swab dipped in alcohol.
If either terminal looks bent or damaged, replace the battery or system board.
If the terminals are clean and not bent, go to Check 4.
Check 4
Connect a new AC power cord. If the Battery icon still does not glow, go to
Check 5.
Check 5
Install a new battery pack. If the Battery icon still does not glow, go to Procedure
3.
Procedure 3
AC PS Unit Replacement Check
Power is supplied to the system board through the AC IN plug located on the AC PS unit. If
the AC PS unit is damaged, replace it.
Refer to chapter 4 for instructions on how to disassemble the 400 series, and then perform the
following checks:
Check 1
Replace the AC PS unit with a new one and restart the system. If the system is
still not functioning properly, perform Check 2.
Check 2
Replace the system board with a new one and restart the system. If the problem
still exists, other FRUs may be damaged.