Toshiba T4500 User Manual page 33

Procedure 3 Battery Power Check
The Status Indicator Panel displays the remaining battery power as shown in Table 2-2.
Battery
Not installed
Installed
If the battery power is not displayed as indicated in Table 2-2, go to Check 1.
Check 1: Make sure the AC adapter's cable and AC cord are firmly plugged into the DC IN 15V
socket and wall outlet. If these cables are connected correctly, go to Check 2.
Check 2: Connect a new AC adapter. If the Status Indicator Panel does not change, go to Check 3.
Check 3: Make sure the battery pack is installed in the computer correctly. If the battery pack
is installed correctly, go to Check 4.
Check 4: Install a new battery pack. If the Battery Charging Status indicator still does not
change, go to Section 2.9, Status Indicator Panel Troubleshooting.
Procedure 4 System PCB Replacement Check
The System PCB incorporates both the system board and the power supply board into one unit.
Power is transferred to the power supply board through the DC IN 15 V plug located on the power
supply board. If either the power supply board or the system board is damaged, replace the System
PCB.
Refer to Chapter 4, Replacement Procedures, for instructions on how to disassemble the T4500/
T4600 Family computer, and then perform the following check:
Check 1: Replace the System PCB with a new one and restart the system. If the problem still
exists, other FRUs may be damaged.
Table 2-2 Battery Power Status
AC adapter
–
Not connected
Connected
Battery Power (Status Indicator Panel)
Does not display
Time or percent (selected in Setup program)
Only percent
2-9