Toshiba PROL450D Manual Do Utilizador

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2 Troubleshooting Procedures 
 
Satellite L450D/455D, Satellite pro L450D Series Maintenance Manual 
 
 
                                                                       
10
 
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 
Red, solid on  
Battery charging with AC. 
White, solid on 
Battery fully charged by AC 
Charging 
Red color off 
Battery abnormal stop charging with AC 
(Bad cell/ Overheated) 
Red, blinking 
(LED on for 1 second 
every 4 seconds) 
Battery within low state: 12 minutes 
remaining 
Red, blinking 
(LED on for 1 second 
every 2 seconds) 
Battery within critical low state: 3 
minutes remaining. The system is 
protected and cannot be re-powered on 
without the AC power connected.  
Discharging 
Red color off 
Battery not in low or critical low state; 
It’s in discharging state