Specifications

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 6-2 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 for1 second
every 4 seconds
Battery within low state: 12 minutes
remaining
Amber, blinking
(LED on 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; in
discharging state
Table 2-2 DC-IN LED
DC-IN LED Power supply status
Solid on AC power exists (LED is solid green).
Off No AC power exists.
To check the power supply status, install a battery pack and connect an AC adaptor to the
DC-IN port on the computer and to a power supply.
Chapter 6-6