Replacing The Heat Sink And Fan Assembly - Lenovo ThinkCentre Hardware Maintenance Manual
Machine types: 3026, 3029, 3039, 3054, 3137, 3139, 3149, 3219, 3245, 3246, 3245, 3282, 3319, 3349, 3394, 3421, 3491, 3544, 3627, 3652, 3699, 3769, 3878, 3934, 4972, 4992, 5132, 5206, 5261, 5267, 5297, 5325, 5384, 5391, 5450, 5472, 5474, 5485, 5498, 5536,
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- Hardware maintenance manual (546 pages) ,
- Safety and warranty manual (265 pages) ,
- User manual (32 pages)
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3. Disconnect the power supply assembly cables from the system board and all drives. See "Locating
parts on the system board" on page 66.
4. Release the power supply assembly cables from the cable clips and ties in the chassis.
5. Lay the computer on its side and remove the four screws at the rear of the chassis that secure the
power supply assembly.
Figure 10. Removing the screws for the power supply assembly
6. Slide the power supply assembly to the front of the computer and then lift it out of the chassis.
7. Ensure that the new power supply assembly is the correct replacement. If your new power supply
assembly has a voltage-selection switch, ensure that you set the voltage-selection switch to match the
voltage available at your electrical outlet. If necessary, use a ballpoint pen to slide the voltage-selection
switch to a different position.
• If the voltage supply range in your local country or region is 100–127 V ac, set the switch to 115 V.
• If the voltage supply range in your local country or region is 200–240 V ac, set the switch to 230 V.
8. Install the new power supply assembly into the chassis so that the screw holes in the power supply
assembly align with those in the chassis.
9. Install and tighten the four screws to secure the power supply assembly.
Note: Use only screws provided by Lenovo.
10. Reconnect the power supply assembly cables to the system board and each of the drives.
11. Secure the power supply assembly cables with the cable clips and ties in the chassis.
12. Go to "Completing the parts replacement" on page 94.
Replacing the heat sink and fan assembly
Attention
Do not open your computer or attempt any repair before reading and understanding the "Important safety
information" in the ThinkCentre Safety and Warranty Guide that came with your computer. To obtain a copy
.
Chapter 8
Replacing FRUs (Machine Types: 3029, 3054, 3139, 3219, 3246, 3282, 3349, 3421, 3544, 3652, 3769, 3934,
4992, 5206, 5267, 5325, 5384, 5450, 5474, 5498, 5554, 5852, 6232, and 6590.)
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