IBM ThinkPad 340 Series Hardware Maintenance Manual page 90

If there is a short circuit (less than 10 ohms),
remove the FRUs indicated one at a time until
the short circuit disappears. Replace the FRU
causing the short circuit.
FRU
Voltage converter
Processor card
System board
Video card
Base memory card
Keyboard control card
Math coprocessor
Diskette drive
Hard disk drive
LCD
Indicator assembly
11. If there is no short circuit, replace the following FRUs
one at a time.
Voltage converter
System board
80
IBM Mobile Systems HMM
VA VG VB
x x x
x
x x x
x x
x
x x
x
x
x
x
x x
VA3 VB3
x
x
x x
x x
x