dynabook E10-S, Maintenance Manual

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2 Troubleshooting 2.3 Power Supply
2-6 Maintenance Satellite Pro E10-S / dynabook E10-S
2.3 Power Supply
The power supply in the computer controls many functions and components. To check if the
power supply is defective or malfunctioning, follow the troubleshooting procedures below
as instructed.
Procedure 1 Power Icon Check
Procedure 2 Connection Check
Procedure 3 Replacement Check
Procedure 4 Replacement Check
Procedure 1: Power Icon Check
The following power LED indicates the power supply status:

Power LED
The power supply controller displays the power supply status through the DC IN/Battery
Charge LED as in the table below.

DC IN/Battery Charge LED
DC IN/Battery Charge LED Power Supply Status
On in White Battery is fully Charged.
On in Amber Battery is been Charging from AC Adapter.
Blinking in Amber Pre-Charge mode (I2C no ack).
Battery not detected
All Off Discharge mode/Stop Charge
If the Power LED and DC IN/Battery Charge LED are off, follow the steps below:
1. Shut down the computer. Remove the AC adapter to shut off power supply to the
computer. Then disassemble the computer and replace the battery. Next, assemble to
check the battery.
2. AC adapter back again.
If the Power LED on IO board is still off, follow the steps below.
Check 1 Turn on your computer and make sure the Power LED color is white. If it does
not, go to Procedure 2.
If the DC IN/Battery Charge LED on System board is still off, follows the steps below:
Check 1 Make sure the M/B DC IN/Battery Charge LED on System board goes on in
White or Amber. If it does not, go to Procedure 2.