Lenovo ThinkPad L520 Hardware Maintenance Manual - Page 54

Turn on the computer., d. Battery pack

Page 54 highlights

d. Battery pack e. Hard disk drive f. External diskette drive or optical drive g. DIMM h. Optical disk or diskette in the internal drive i. PC Cards 4. Turn on the computer. 5. Determine whether the problem has been solved. 6. If the problem does not recur, reconnect the removed devices one at a time until you find the failing FRU. 7. If the problem remains, replace the following FRUs one at a time (do not replace a nondefective FRU): a. System board b. LCD assembly 48 Hardware Maintenance Manual

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d. Battery pack
e.
Hard disk drive
f.
External diskette drive or optical drive
g. DIMM
h.
Optical disk or diskette in the internal drive
i.
PC Cards
4. Turn on the computer.
5. Determine whether the problem has been solved.
6. If the problem does not recur, reconnect the removed devices one at a time until you find the failing FRU.
7. If the problem remains, replace the following FRUs one at a time (do not replace a nondefective FRU):
a.
System board
b. LCD assembly
48
Hardware Maintenance Manual