CHAPTER 4: Troubleshooting
146
•
“Check the power adapter” on page 146
•
“Check the battery pack” on page 146
Check the power adapter
Unplug the power adapter cable from the notebook and measure the output voltage at
the power adapter cable plug. See the following figure.
•
If the voltage is not correct, replace the power adapter.
•
If the voltage is within the range, do the following:
•
Replace the system board.
•
If the problem is not corrected, see
“Undetermined problems” on page 159
.
•
If the voltage is not correct, go to
Step •
.
•
If the power-on indicator does not light up, check the power adapter’s power
cord for correct continuity and installation.
•
If the operational charge does not work,
see “Check the battery pack” on page
146
.
Check the battery pack
To check the battery pack using software:
1
Open Power Management in the Windows Control Panel.
2
In Power Meter, make sure that the parameters shown for Current Power Source
and Total Battery Power Remaining are correct.
3
Repeat the steps 1 and 2, for both battery and adapter. This helps you identify first
the problem is on recharging or discharging.
To check the battery pack using hardware:
1
Turn off the notebook.
2
Remove the battery pack and measure the voltage between battery terminals 1 (+)
and 6 (ground).
3
If the voltage is still less than 7.5 Vdc after recharging, replace the battery.
If the battery status indicator does not light up, remove the battery pack and let it return
to room temperature. Re-install the battery pack.
If the charge indicator still does not light up, replace the battery pack. If the charge
indicator still does not light up, replace the DC/DC charger board.
Pin 1: +19 to +20.5V
Pin 2: 0V, Ground
Important
An audible noise from the power adapter does not always indicate a defect.
Important
To check the battery charge operation, use a discharged battery pack or a battery pack
that has less than 50% of the total power remaining when installed in the notebook.
Summary of Contents for MG1
Page 1: ... MG1 SERVICEGUIDE ...
Page 11: ...5 System block diagram ...
Page 42: ...CHAPTER 1 System specifications 36 ...
Page 43: ...CHAPTER2 37 System utilities BIOS Setup Utility BIOS flash utility Removing a password lock ...
Page 56: ...CHAPTER 2 System utilities 50 ...
Page 167: ...CHAPTER5 161 Connector locations System board top connectors System board bottom connectors ...
Page 169: ...CHAPTER6 163 FRU Field Replaceable Unit list Introduction Exploded diagram FRU list ...
Page 178: ...CHAPTER 6 FRU Field Replaceable Unit list 172 ...
Page 185: ...APPENDIXC 179 Online support information ...
Page 190: ...Index 184 ...
Page 191: ......
Page 192: ...MAN GODZILLA SVC GDE R1 07 08 ...