Lenovo ThinkCentre Edge 72 Hardware Maintenance Manual (HMM) for ThinkCentre E - Page 70

External Cache RAM

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d. Extended video memory e. External Cache f. External Cache RAM g. Hard disk drive h. Diskette drive 3. Turn on the power and the computer to re-test the system. 4. Repeat steps 1 through 3 until you find the failing device or adapter cards. If all devices and adapter cards have been removed, and the problem continues, replace the system board. See "Replacing the system board" on page 98 or "Replacing the system board" on page 139. 66 ThinkCentre Hardware Maintenance Manual

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d. Extended video memory
e.
External Cache
f.
External Cache RAM
g. Hard disk drive
h.
Diskette drive
3. Turn on the power and the computer to re-test the system.
4. Repeat steps 1 through 3 until you find the failing device or adapter cards.
If all devices and adapter cards
have been removed, and the problem continues, replace the system board. See “Replacing the system
board” on page 98 or “Replacing the system board” on page 139.
66
ThinkCentre Hardware Maintenance Manual