Laptop User Manual

Troubleshooting Procedures 5-27

Figure 5-11 Battery Charger Interface Troubleshooting Diagram

System Fails to Boot:

Battery Charger Interface Checks

DC_IN=19V

Check F1, T3

U4=5V

Check D18

Charge Battery 1 or

Charge Battery 2

Check Charger Control

Board (RBC3) U1, D8,

Check Battery Pack

Voltage & Temp

END

Yes

Plug-In AC Adapter