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2 Troubleshooting Procedures 2.3 Power Supply Troubleshooting
PORTEGE M300 Maintenance Manual (960-504) 2-7
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 procedures described in this section are:
Procedure 1: Icon Check
Procedure 2: Error Code Check
Procedure 3: Connection Check
Procedure 4: Charge Check
Procedure 5: Replacement Check
Procedure 1 Icon Check
The following Icons indicate the power supply status:
Battery icon
DC IN icon
The power supply controller displays the power supply status through the Battery icon and
the DC IN icon as listed in Table 2-1 and Table 2-2 below. To check the power supply status,
install a battery pack and connect an AC adapter.
Table 2-1 Battery Icon
Battery icon Power supply status
Lights orange Battery is charged and the external DC is input. It has no
relation with ON/OFF of the system power.
Lights green Battery is fully charged and the external DC is input. It has
no relation with ON/OFF of the system power.
Blinks orange
(even intervals)
The battery level is low while the system power is ON.
Blinks orange once
(at being switched on)
The system is driven by only a battery and the battery level
is low.
Doesn’t light Any condition other than those above.