Lenovo ThinkPad T420 Hardware Maintenance Manual page 42
Hide thumbs
Also See for ThinkPad T420:
- (295 pages) ,
- Podręcznik użytkownika (294 pages) ,
- Käyttöopas (286 pages)
Table of Contents
Advertisement
• If the voltage is correct, replace the system board.
• If the voltage is not correct, replace the backup battery.
• If the backup battery discharges quickly after replacement, replace the system board.
36
ThinkPad T420 and T420i Hardware Maintenance Manual
Wire
Voltage (V dc)
Red
+2.5 to +3.2
Black
Ground
Advertisement
Table of Contents
