Dell Inspiron 1721 CPU Fan Replacement

简介

If your Dell Inspiron 1721 has a loud fan or is prone to overheating, use this guide to replace the internal fan.

Internal fans circulate cool air to a heat-sink, allowing the CPU to stay at a low temperature, even during stressful performance. Dusty internal fans will restrict airflow in any device.

Before using this guide, verify that the computer is completely shutdown.

你所需要的

步骤 1 Battery

Dell Inspiron 1721 CPU Fan Replacement, Battery: 步骤 1 中的图像 1，2

Dell Inspiron 1721 CPU Fan Replacement, Battery: 步骤 1 中的图像 2，2

Slide tabs outward to undo the locks.
Grab and pull the battery away from the device to remove.

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步骤 2 Hinge Plate Cover

Dell Inspiron 1721 CPU Fan Replacement, Hinge Plate Cover: 步骤 2 中的图像 1，3

Dell Inspiron 1721 CPU Fan Replacement, Hinge Plate Cover: 步骤 2 中的图像 2，3

Dell Inspiron 1721 CPU Fan Replacement, Hinge Plate Cover: 步骤 2 中的图像 3，3

Pry up on the corner of the hinge cover with an iFixit opening tool.
Use the iFixit opening tool along both sides and the front of the hinge cover to release it.
Lean the display back as far as it goes and lift up on the hinge cover to remove.

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步骤 3 Keyboard

Dell Inspiron 1721 CPU Fan Replacement, Keyboard: 步骤 3 中的图像 1，3

Dell Inspiron 1721 CPU Fan Replacement, Keyboard: 步骤 3 中的图像 2，3

Dell Inspiron 1721 CPU Fan Replacement, Keyboard: 步骤 3 中的图像 3，3

Remove four 3mm Phillips #1 screws from the top of the keyboard.
Use an iFixit opening tool to slide the keyboard upwards toward the display.
Slide the keyboard until it is clear of the lock tab, and lift it up to remove.

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步骤 4 Back Cover

Dell Inspiron 1721 CPU Fan Replacement, Back Cover: 步骤 4 中的图像 1，1

Disconnect the touch pad connector.

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步骤 5

Dell Inspiron 1721 CPU Fan Replacement: 步骤 5 中的图像 3，3

Lay the device flat and remove the 17 7mm Phillips #0 screws.
Use an iFixit opening tool to separate the back cover.
Remove the back cover.

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步骤 6 Heat Sink

Dell Inspiron 1721 CPU Fan Replacement, Heat Sink: 步骤 6 中的图像 1，3

Dell Inspiron 1721 CPU Fan Replacement, Heat Sink: 步骤 6 中的图像 2，3

Dell Inspiron 1721 CPU Fan Replacement, Heat Sink: 步骤 6 中的图像 3，3

Unscrew the Phillips #0 screws attaching the heat sink to the motherboard.
The screws attaching the heat sink to the motherboard are part of the heat sink.
Carefully remove the heat sink from the motherboard.
You may have to apply upward force while removing the heat sink from the motherboard, due to the thermal paste between it and the CPU.