Toshiba Satellite A660-BT3G25X Maintenance Manual page 46

2 Troubleshooting Procedures
The power supply controls many functions and components. To determine if the power
supply is functioning properly, start with Procedure 1 and continue with the other Procedures
as instructed. The flowchart in Figure 2-2 gives a summary of the process. The procedures
described in this section are:
Procedure 1: Power status check
Procedure 2: Adaptor / battery replacement
Procedure 3: Power supply connection check
Procedure 4: Diagnostic check
Procedure 5: Internal connection check
Procedure 1 Power Status Check
The following LEDS indicate the power supply status:
Battery LED
DC-IN LED
The power supply controller displays the power supply status through the Battery and the DC-
IN LEDS as listed in the tables below.
Battery State
Charging
Discharging
SatelliteA660/ProA660 Series Maintenance Manual
12
Figure 2-2 Power Supply Troubleshooting Process
Table 2-1 Battery LED
LED colors
Amber, solid on
White, solid on
Amber color off
Amber, blinking
(LED on for 1 second
every 4 seconds)
Amber, blinking
(LED on for 1 second
every 2 seconds)
Definition
Battery charging with AC.
Battery fully charged by AC
Battery abnormal stop charging with AC
(Bad cell/ Overheated)
Battery within low state: 12 minutes
remaining
Battery within critical low state: 3
minutes remaining. The system is
protected and cannot be re-powered on
without the AC power connected.