Lenovo H520s Hardware Maintenance Manual
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... Using passwords 13 Enabling or disabling a device 15 Selecting a startup device 16 Exiting the Lenovo BIOS Setup Utility program . . 17 Chapter 6. General information . . . . 53 Additional Service Information 53 © Copyright Lenovo 2012 iii Safety information 3 General safety 3 Electrical safety 3 Safety inspection guide 5 Handling...28 Removing the computer cover 28 Removing the front bezel 29 Replacing an optical drive 30 Replacing the hard disk drive 32 Replacing a memory module 33 Replacing the Power supply 34 Replacing the graphic card 35 Replacing the system fan 37 ...
... Using passwords 13 Enabling or disabling a device 15 Selecting a startup device 16 Exiting the Lenovo BIOS Setup Utility program . . 17 Chapter 6. General information . . . . 53 Additional Service Information 53 © Copyright Lenovo 2012 iii Safety information 3 General safety 3 Electrical safety 3 Safety inspection guide 5 Handling...28 Removing the computer cover 28 Removing the front bezel 29 Replacing an optical drive 30 Replacing the hard disk drive 32 Replacing a memory module 33 Replacing the Power supply 34 Replacing the graphic card 35 Replacing the system fan 37 ...
Lenovo H520s Hardware Maintenance Manual
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To remove all electrical current from the device, ensure that all power cords are disconnected from the power source. 2 1 CAUTION: Do not place any object weighing more than 82 kg (180 lbs.) on the power supply do not turn off the electrical current supplied to the device. ≥18 kg(37 lbs) CAUTION: Use safe practices when lifting. ≥32 kg(70.5 lbs) ≥55 kg(121.2 lbs) CAUTION: The power control button on the device and the power switch on top of rack-mounted devices. 8 Lenovo H520sHardware Maintenance Manual The device also might have more than one power cord.
To remove all electrical current from the device, ensure that all power cords are disconnected from the power source. 2 1 CAUTION: Do not place any object weighing more than 82 kg (180 lbs.) on the power supply do not turn off the electrical current supplied to the device. ≥18 kg(37 lbs) CAUTION: Use safe practices when lifting. ≥32 kg(70.5 lbs) ≥55 kg(121.2 lbs) CAUTION: The power control button on the device and the power switch on top of rack-mounted devices. 8 Lenovo H520sHardware Maintenance Manual The device also might have more than one power cord.
Lenovo H520s Hardware Maintenance Manual
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... system, and turn off the computer and all cables attached to the chassis. Disconnect all attached devices. Remove the computer cover. Refer to the bay. 32 Lenovo H520sHardware Maintenance Manual Remove the front bezel. Disconnect the data and power cables from the hard disk drive. 4 2 3 1 Step 9. Remove the 4 screws that secures the...
... system, and turn off the computer and all cables attached to the chassis. Disconnect all attached devices. Remove the computer cover. Refer to the bay. 32 Lenovo H520sHardware Maintenance Manual Remove the front bezel. Disconnect the data and power cables from the hard disk drive. 4 2 3 1 Step 9. Remove the 4 screws that secures the...