2 Troubleshooting
2.3 Power Supply
Procedure 2 Connection Check
Power is supplied to the system board as illustrated below:
AC
adaptor
System board
AC power cord
AC adaptor cord
Battery pack
Follow the steps below to check whether each connector has been connected correctly:
Check 1
Make sure the AC adaptor and AC power cord have been firmly plugged
into the DC IN socket and wall outlet, respectively. When they have been
connected correctly, perform Check 2.
Check 2
Connect a new AC adaptor and AC power cord.
•
If the DC IN LED does not go on, go to Procedure 3.
•
If the battery LED does not go on, perform Check 3.
Check 3
Make sure the battery pack has been correctly installed in the computer.
If the battery LED does not go on while the battery pack has been installed
correctly, go to Procedure 3.
Procedure 3 Replacement Check
The system board, power supply board, or CPU may be faulty. Disassemble the computer
according to Chapter 4 and follow the steps below:
Check 1
Replace the power supply board with a new one. If the battery pack is still
not working properly, perform Check 2.
Check 2
Replace the system board with a new one. If the battery pack is still not
working properly, perform Check 3.
Check 3
Replace the CPU with a new one.
2-8
Qosmio F40/F45 Maintenance Manual
Summary of Contents for Qosmio F40
Page 6: ...Chapter 1 Hardware Overview ...
Page 7: ...1 Hardware Overview 1 1 Features Qosmio F40 F45 Maintenance Manual 2 ...
Page 29: ...1 Hardware Overview 1 5 HD DVD ROM Qosmio F40 F45 Maintenance Manual 24 ...
Page 35: ...2 Troubleshooting 2 概要 Chapter 2 Troubleshooting 2 i Qosmio F40 F45 Maintenance Manual ...
Page 64: ...Chapter 3 Diagnostic Programs ...
Page 67: ......
Page 119: ...3 Diagnostic Programs 3 10 Peripheral 52 QosmioF40 F45 dynabook Qosmio F40 Maintenance Manual ...
Page 131: ...Chapter 4 Replacement Procedures 4 1 ...
Page 132: ...4 Replacement Procedures 4 ii Qosmio F40 F45 Maintenance Manual ...
Page 215: ...6000 1 次 Appendices ...