Service manual

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Troubleshooting
4 – 2
BEFORE YOU BEGIN
Before you start a troubleshooting job, be sure that:
• All peripheral devices are disconnected from the notebook. (They should be tested separately.)
• You have reviewed the safety precautions in the beginning of Chapter 3: Disassembly.
TOOLS
In addition to the tools listed in Chapter 3, troubleshooting jobs may call for some additional devices:
• Multimeter
• Transistor checker
• Oscilloscope (100 MHz)
• Soldering/de-soldering station (30W)
precautions & tools