Toshiba Satellite Pro L450-W1543 Maintenance Manual - Page 45

2 Troubleshooting 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 DCIN LEDS as listed in the tables below. Battery State Charging Discharging LED colors Definition Red, solid on Battery charging with AC. White, solid on Battery fully charged by AC Red color off Battery abnormal stop charging with AC (Bad cell/ Overheated) Red, blinking Battery within low state: 12 minutes (LED on for 1 second remaining every 4 seconds) Red, blinking Battery within critical low state: 3 (LED every on for 1 second 2 seconds) minutes remaining. The system is protected and cannot be re-powered without the AC power connected. on Red color off Battery not in low or critical low state; It's in discharging state Table 2-1 Battery LED Satellite A350, SATEGO A350, EQUIUM A350 Series Maintenance Manual 10