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2 Troubleshooting Procedures 2.3 Power Supply Troubleshooting
2-8 [CONFIDENTIAL] Satellite M40X/M45X/Satellite Pro M40X/EQUIUM M40X Series Maintenance Manual
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
Amber, solid on Battery charging with AC .
Green, solid on Battery fully charged by AC
Charging
Green color off Battery abnormal stop charging with AC
(Bad cell/ Overheated)
Amber, blinking
(LED on for 1 second
every 4 seconds)
Battery within low state: 12 minutes
remaining
Amber, 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
Amber color off Battery not in low or critical low state;
It’s in discharging state