Checking the AC Adapter
You care here because the computer fails only when the
AC Adapter is used:
v
If the power-on indicator does not turn on, check the
power cord of the AC Adapter for correct continuity and
installation.
v
If the operational charge does not work, go to “Checking
operational charging”.
Unplug the AC Adapter cable from the computer and
measure the output voltage at the plug of the AC Adapter
cable. See the following figure:
Pin
Voltage (V dc)
1
15.5 V. - 17.0 V.
2
Ground
If the voltage is not correct, replace the AC Adapter.
If the voltage is within the range, do the following:
v
Replace the system board.
v
If the problems still persist, go to “Undetermined
Problems” on page 54.
Note:
An audible noise from the AC Adapter does not
always indicate a defect.
Checking operational charging
To check operational charging, use a discharged battery
pack (Battery ASM) or a Battery ASM that has less than
50% of the total power remaining when installed in the
computer.
Perform operational charging. If the battery status indicator
or icon does not turn on, remove the Battery ASM and let it
return to room temperature. Reinstall the Battery ASM. If
the charge indicator or icon still does not turn on, replace
the Battery ASM.
If the charge indicator still does not turn on, replace the
system board. Then reinstall the Battery ASM. If the
reinstalled Battery ASM is not charged, go to the next
section.
MT 2658/2659/2677
37
Summary of Contents for ThinkPad R32 2658
Page 1: ...ThinkPad R32 Series Hardware Maintenance Manual...
Page 4: ...iv ThinkPad R32 Series...
Page 85: ...1 Step Size Quantity Color Torque 1 M2 5 x L10 7 Black 3 2 kgf cm MT 2658 2659 2677 79...
Page 103: ...MT 2658 2659 2677 97...
Page 145: ...1 Step Size Quantity Color Torque 1 M2 5 x L10 7 Black 3 2 kgf cm MT 2658 2659 2677 139...
Page 205: ...1 Step Size Quantity Color Torque 1 M2 5 x L10 7 Black 3 2 kgf cm MT 2658 2659 2677 199...