2 Troubleshooting Procedures 2.3 Power Supply Troubleshooting
Procedure 3 Connection Check
The power is supplied as shown below:
Any of the connectors may be disconnected. Perform Check 1.
Check 1 Make sure the AC adapter and the AC power cord are firmly plugged into the DC
IN 15 V socket and wall outlet. If these cables are connected correctly, go to
Check 2.
Check 2 Make sure the DC-IN harness is firmly plugged to the connector on the system
board. If the harness is connected correctly, go to Check 3.
Check 3 Replace the AC adapter and the AC power cord with new ones.
• If the DC IN icon does not light, go to Procedure 5.
• If the battery icon does not light, go to Check 4.
Check 4 Make sure the battery pack is installed in the computer correctly. If the battery is
properly installed and the battery icon still does not light, go to Procedure 4.
PORTEGE M300 Maintenance Manual (960-504) 2-15