Toshiba R600-S4213 Maintenance Manual - Page 63

2.3 Power Supply Troubleshooting 2 Troubleshooting Procedures Procedure 5 Replacement Check The power is supplied to the system board by the AC adapter. If either the AC adapter or the system board was damaged, perform the following Checks. To disassemble the computer, follow the steps described in Chapter 4, Replacement Procedures. When AC adapter is connected: Check 1 AC adapter may be faulty. Replace the AC adapter with a new one. If the problem still occurs, perform Check 2. Check 2 System board may be faulty. Replace the system board with a new one. When AC adapter is not connected: (When driving with battery pack) Check 1 Battery pack may be faulty. Replace it with a new one. If the problem still occurs, perform Check 2. Check 2 System board may be faulty. Replace it with a new one. PORTEGE R600 Maintenance Manual (960-709) [CONFIDENTIAL] 2-17