Hardware Maintenance Manual
Page 8
... mat to listed above rule, you start to work on a machine that it , ask the customer to power-off (EPO) switch, disconnecting switch, or electrical outlet. First, check that has exposed electrical circuits, observe the following parts with powered-on electrical equipment; Removing or installing main units • Before you may...
... mat to listed above rule, you start to work on a machine that it , ask the customer to power-off (EPO) switch, disconnecting switch, or electrical outlet. First, check that has exposed electrical circuits, observe the following parts with powered-on electrical equipment; Removing or installing main units • Before you may...
Hardware Maintenance Manual
Page 10
... flakes can be verified by shaking the computer and listening for operator safety and correct system function. Use the round ground prong of the electrical outlet can cause electrical shorts. 4 ThinkPad X220 and X220i Hardware Maintenance Manual Proper grounding of the ac plug on after FRU replacement, make sure all screws...
... flakes can be verified by shaking the computer and listening for operator safety and correct system function. Use the round ground prong of the electrical outlet can cause electrical shorts. 4 ThinkPad X220 and X220i Hardware Maintenance Manual Proper grounding of the ac plug on after FRU replacement, make sure all screws...
Hardware Maintenance Manual
Page 12
DANGER Unless hot swap is allowed for the FRU being replaced, do as follows before removing it: power off the computer, unplug all power cords from electrical outlets, remove the battery pack, and disconnect any interconnecting cables. 6 ThinkPad X220 and X220i Hardware Maintenance Manual
DANGER Unless hot swap is allowed for the FRU being replaced, do as follows before removing it: power off the computer, unplug all power cords from electrical outlets, remove the battery pack, and disconnect any interconnecting cables. 6 ThinkPad X220 and X220i Hardware Maintenance Manual
Hardware Maintenance Manual
Page 67
.... 5. Removing and replacing a FRU External CRU statement to replacement. See your responsibility; Any such FRUs are listed at http://www.lenovo.com/CRUs. DANGER Before removing any time upon request. Attention: The system board is replaced by , electrostatic discharge. Some CRUs are...charged for rattling sounds. Do not try to be damaged by the CRU. CRU information and replacement instructions are available from electrical outlets, remove the battery pack, and then disconnect any computer unless you are listed. 4. This chapter presents directions and drawings for ...
.... 5. Removing and replacing a FRU External CRU statement to replacement. See your responsibility; Any such FRUs are listed at http://www.lenovo.com/CRUs. DANGER Before removing any time upon request. Attention: The system board is replaced by , electrostatic discharge. Some CRUs are...charged for rattling sounds. Do not try to be damaged by the CRU. CRU information and replacement instructions are available from electrical outlets, remove the battery pack, and then disconnect any computer unless you are listed. 4. This chapter presents directions and drawings for ...