Toshiba P25 manual Troubleshooting Procedures Power Supply Troubleshooting, Battery LED

2 Troubleshooting Procedures 2.3 Power Supply Troubleshooting

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	Amber, solid on	Battery charging with AC .
	Green, solid on	Battery fully charged by AC
	Green color off	Battery abnormal stop charging with AC
		(Bad cell/ Overheated)
Discharging	Amber, blinking	Battery within low state: 12 minutes
	(LED on for 1 second	remaining
	every 4 seconds)
	Amber, 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.
	Amber color off	Battery not in low or critical low state;
		It’s in discharging state

2-8 Satellite P20-25 Series Maintenance Manual