JHT01 Service Manual
6-8
Any of the connectors may be disconnected. Perform Check 1.
Check 1
Disconnect the AC power cord from wall outlet. Check the power cable for
breaks.
•
If the power cord is damaged, connect a new AC power cord.
• If there is no damage, go to Check 2.
Check 2
Make sure the AC adaptor cord and AC power cord are firmly plugged into the
DC-IN socket, AC adaptor inlet and wall outlet.
• If these cables are connected correctly, go to Check 3.
Check 3
Make sure that the DC-IN input port socket is firmly secured to the system board
of the computer
• If the DC-IN input socket is loose, go to Procedure 5.
•
If it is not loose, go to Check 4.
Check 4
Use a multimeter to make sure that the AC adaptor output voltage is close to 19 V.
• If the output is several percent lower than 19 V, go to Check 5.
•
If the output is close to 19 V, go to Check 6.
Check 5
Connect a new AC adaptor or AC power cord.
• If the battery LED does not light, go to Check 6.
Check 6
Make sure the battery pack is installed in the computer correctly.
• If the battery is properly installed and the battery LED still does not light, go
to Procedure 4.
3.4 Procedure 4 Diagnostic check
The power supply may not charge the battery pack. Perform the following
procedures:
• Reinstall the battery pack.
•
Attach the AC adaptor and turn on the power. If you cannot turn on the power,
go to Procedure 5.
• Run the Diagnostic test following the procedures described Tests and
Diagnostics
. If no problem is detected, the battery is functioning normally.
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