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Chapter 4
Check the Power Adapter
Unplug the power adapter cable from the computer and measure the output voltage at the plug of the power
adapter cable. See the following figure
1.
If the voltage is not correct, replace the power adapter.
2.
If the voltage is within the range, do the following:
T
Replace the System board.
T
If the problem is not corrected, see “Undetermined Problems” on page 89.
T
If the voltage is not correct, go to the next step.
NOTE:
An audible noise from the power adapter does not always indicate a defect.
3.
If the power-on indicator does not light up, check the power cord of the power adapter for correct
continuity and installation.
4.
If the operational charge does not work, see “Check the Battery Pack” on page 76.
Pin 1: +19 to +20.5V
Pin 2: 0V, Ground
Summary of Contents for TRAVELMATE TravelMate 4080
Page 8: ...Chapter 1 3 System Block Diagram ...
Page 9: ...4 TravelMate 4070 4080 Board Layout Top View ...
Page 56: ...51 Chapter 2 ...
Page 61: ...Chapter 3 56 Removing the Battery 1 Unlatch the battery latch then remove the battery ...
Page 69: ...Chapter 3 64 ...
Page 76: ...71 Chapter 3 ...
Page 95: ...Chapter 5 90 Top View Jumper and Connector Locations Chapter 5 ...
Page 98: ...93 Chapter 5 ...
Page 113: ...Chapter 6 108 ...