Toshiba PROL450D manual Procedure 1 Power Status Check, Battery LED

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.

	Table 2-1 Battery LED
Battery State	LED colors	Definition
Charging	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)
Discharging	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 on for 1 second	minutes remaining. The system is
	every 2 seconds)	protected and cannot be re-powered on
		without the AC power connected.
	Red color off	Battery not in low or critical low state;
		It’s in discharging state

Satellite L450D/455D, Satellite pro L450D Series Maintenance Manual

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