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Checkout guide
(16 - 10 V)
If the voltage is not correct, replace the ac adapter.
If the voltage is acceptable, do the following:
Replace the system board.
If the problem persists, go to “Product overview”
on page 35.
Note: Noise from the ac adapter does not always indicate
a defect.
Checking operational charging:
To check
operational charging, use a discharged battery pack or a
battery pack 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 pack
and let it return to room temperature. Reinstall the battery
pack. If the charge indicator or icon still does not turn on,
replace the battery pack.
If the charge indicator still does not turn on, replace the
system board. Then reinstall the battery pack. If the
reinstalled battery pack is not charged, go to the next
section.
Checking the battery pack:
Battery charging
does not start until the Fuel Gauge shows that less than
95% of the total power remains; under this condition the
battery pack can charge to 100% of its capacity. This
protects the battery pack from being overcharged or from
having a shortened life.
Note: The battery pack might not be able to charge when
it is hot. If it is hot, remove it from the computer
and after it cools down, reinstall and recharge it.
To check the battery pack, do the following:
1. Power off the computer.
2. Remove the battery pack and measure the voltage
between battery terminals 1 (
+
) and 4 (
−
). See the
following figure:
Pin
Voltage (V dc)
1
+
15.5 to
+
17.0
2
Ground
30
ThinkPad 570 and 570E Hardware Maintenance
Manual
Summary of Contents for MT 2643
Page 1: ...January 2000 This manual supports ThinkPad 570 MT 2643 2644 ThinkPad 570E MT 2643 2644 ...
Page 22: ...18 ThinkPad 570 and 570E Hardware Maintenance Manual ...
Page 57: ...Removing and replacing a FRU 1010 Battery pack ThinkPad 570 and 570E 53 ...
Page 59: ...Removing and replacing a FRU Cable route ThinkPad 570 and 570E 55 ...
Page 64: ...Removing and replacing a FRU 60 ThinkPad 570 and 570E Hardware Maintenance Manual ...
Page 87: ...Removing and replacing a FRU ThinkPad 570 and 570E 83 ...
Page 97: ...Removing and replacing a FRU Battery pack in the UltraBase ThinkPad 570 and 570E 93 ...
Page 99: ...Locations ThinkPad 570 and 570E 95 ...
Page 102: ...Locations Password pads 98 ThinkPad 570 and 570E Hardware Maintenance Manual ...
Page 103: ...Parts list Parts List ThinkPad 570 and 570E 99 ...
Page 107: ...Parts list LCD FRU 13 3 inch XGA TFT continued ThinkPad 570 and 570E 103 ...
Page 114: ...Parts list 110 ThinkPad 570 and 570E Hardware Maintenance Manual ...