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Brother MFC-490CW Motherboard Replacement

简介

The Brother MFC-490CW is an all-in-one inkjet printer that includes features like printing, scanning, copying, and faxing. In terms of its internal components, the motherboard (also referred to as the mainboard) is a crucial part of the printer. The motherboard serves as the central circuit board that houses the primary processing unit and connects various components, such as the CPU, memory, input/output ports, and other essential elements. Issues with the motherboard in a Brother MFC-490CW, such as power failures, display dysfunction, communication errors, and persistent print quality problems, may suggest various malfunctions.

你所需要的

  1. Brother MFC-490CW Motherboard Replacement, Remove screws holding the front panel: 步骤 1 中的图像 1，1

    • Use a Phillips #2 screwdriver to remove the three 12.1 mm screws holding the control panel in place.

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  2. Brother MFC-490CW Motherboard Replacement, Unplug the panel from the rest of the printer: 步骤 2 中的图像 1，3 Brother MFC-490CW Motherboard Replacement, Unplug the panel from the rest of the printer: 步骤 2 中的图像 2，3 Brother MFC-490CW Motherboard Replacement, Unplug the panel from the rest of the printer: 步骤 2 中的图像 3，3

    • Lift up the front panel from the device.

    • Gently lift up and disconnect the data cables that attach the panel to the printer.

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  3. Brother MFC-490CW Motherboard Replacement, Motherboard: 步骤 3 中的图像 1，3 Brother MFC-490CW Motherboard Replacement, Motherboard: 步骤 3 中的图像 2，3 Brother MFC-490CW Motherboard Replacement, Motherboard: 步骤 3 中的图像 3，3

    • Lift the scanner unit lid.

    • Gently twist the top portion of the arm. The top portion should release from the scanner unit.

    • Rotate the arm approximately 45 degrees to remove the bottom portion from the device.

    • Before removing the unit, apply 2-3 pieces of tape to secure the top and bottom of the unit.

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  4. Brother MFC-490CW Motherboard Replacement: 步骤 4 中的图像 1，3 Brother MFC-490CW Motherboard Replacement: 步骤 4 中的图像 2，3 Brother MFC-490CW Motherboard Replacement: 步骤 4 中的图像 3，3

    • Slide the unit either to the left or right and push it away from the device.

    • Once one hinge is separated from the device, begin to remove the other hinge.

    • Gently place the unit on the work surface.

    • Be careful not to pull too hard. The wires connecting the unit to the device must be removed.

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  5. Brother MFC-490CW Motherboard Replacement: 步骤 5 中的图像 1，3 Brother MFC-490CW Motherboard Replacement: 步骤 5 中的图像 2，3 Brother MFC-490CW Motherboard Replacement: 步骤 5 中的图像 3，3

    • From the back of the device, use the exposed portion of the panel and gently begin to remove the panel away from the device.

    • While it is not necessary to use a prying tool, a thin prying tool can help lift the panels.

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  6. Brother MFC-490CW Motherboard Replacement: 步骤 6 中的图像 1，3 Brother MFC-490CW Motherboard Replacement: 步骤 6 中的图像 2，3 Brother MFC-490CW Motherboard Replacement: 步骤 6 中的图像 3，3

    • Use the exposed portion of the panel to begin to lift the panel away from the back of the device.

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  7. Brother MFC-490CW Motherboard Replacement: 步骤 7 中的图像 1，3 Brother MFC-490CW Motherboard Replacement: 步骤 7 中的图像 2，3 Brother MFC-490CW Motherboard Replacement: 步骤 7 中的图像 3，3

    • Remove the three power cables that connect the scanner to the motherboard on the left side.

    • Before removing the cables, create a diagram of their locations. Label the cables with some tape or post-its.

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  8. Brother MFC-490CW Motherboard Replacement: 步骤 8 中的图像 1，2 Brother MFC-490CW Motherboard Replacement: 步骤 8 中的图像 2，2

    • Unscrew the 12.1mm screw to remove the ground wire.

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  10. Brother MFC-490CW Motherboard Replacement: 步骤 9 中的图像 1，3 Brother MFC-490CW Motherboard Replacement: 步骤 9 中的图像 2，3 Brother MFC-490CW Motherboard Replacement: 步骤 9 中的图像 3，3

    • Gently pull the data cable out of the motherboard.

    • Slide the cable out of the slots to remove it from the device.

    • Once separated, place the unit and ground screw in a safe area of the workspace until they are needed for re-assembly.

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  11. Brother MFC-490CW Motherboard Replacement: 步骤 10 中的图像 1，1

    • Unscrew the three 14.1mm screws.

    • Unscrew the 12.1mm screw.

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  12. Brother MFC-490CW Motherboard Replacement: 步骤 11 中的图像 1，1

    • Pull the paper tray away from the device.

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  13. Brother MFC-490CW Motherboard Replacement: 步骤 12 中的图像 1，2 Brother MFC-490CW Motherboard Replacement: 步骤 12 中的图像 2，2

    • Locate and remove the screw near the USB and ethernet ports.

    • Unscrew the 8mm screw at the center of the device.

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  14. Brother MFC-490CW Motherboard Replacement: 步骤 13 中的图像 1，1

    • Unscrew the two 14.1mm screws holding the rear panel in place.

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  15. Brother MFC-490CW Motherboard Replacement: 步骤 14 中的图像 1，2 Brother MFC-490CW Motherboard Replacement: 步骤 14 中的图像 2，2

    • Gently remove the red power cable from the motherboard.

    • This cable needs to be taken out to allow the removal of the device cover.

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  16. Brother MFC-490CW Motherboard Replacement: 步骤 15 中的图像 1，3 Brother MFC-490CW Motherboard Replacement: 步骤 15 中的图像 2，3 Brother MFC-490CW Motherboard Replacement: 步骤 15 中的图像 3，3

    • Gently push the upper-left tab of the paper jam clear cover and separate the hinged portion of the cover from the rest of the device.

    • Once one side of free, slide the other side away from the device.

    • Pull the cover away from the device.

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  17. Brother MFC-490CW Motherboard Replacement: 步骤 16 中的图像 1，3 Brother MFC-490CW Motherboard Replacement: 步骤 16 中的图像 2，3 Brother MFC-490CW Motherboard Replacement: 步骤 16 中的图像 3，3

    • Using a spudger, loosen the two clipped portions of the cover located at the back-center of the device.

    • Once the clips are free the rest of the cover can be lifted up and away from the device.

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  18. Brother MFC-490CW Motherboard Replacement: 步骤 17 中的图像 1，3 Brother MFC-490CW Motherboard Replacement: 步骤 17 中的图像 2，3 Brother MFC-490CW Motherboard Replacement: 步骤 17 中的图像 3，3

    • Push the left and right clipped portion of the front port cover away from the device.

    • Pull the cover away from the device.

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  19. Brother MFC-490CW Motherboard Replacement: 步骤 18 中的图像 1，2 Brother MFC-490CW Motherboard Replacement: 步骤 18 中的图像 2，2

    • Unscrew the three 8.3mm screws from the motherboard cover.

    • Lift the motherboard cover away from the device.

    • Be careful, the motherboard cover may get stuck to the ethernet port. Simply slide the cover until it clears the port.

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  20. Brother MFC-490CW Motherboard Replacement: 步骤 19 中的图像 1，3 Brother MFC-490CW Motherboard Replacement: 步骤 19 中的图像 2，3 Brother MFC-490CW Motherboard Replacement: 步骤 19 中的图像 3，3

    • Gently pull the five power cables on the left side, away from the motherboard.

    • Label the cables with post-its or tape before removal.

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  21. Brother MFC-490CW Motherboard Replacement: 步骤 20 中的图像 1，2 Brother MFC-490CW Motherboard Replacement: 步骤 20 中的图像 2，2

    • Gently lift the five power cables on the right side away from the motherboard.

    • Label the cables with posti-its or tape before removing them from the motherboard.

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  22. Brother MFC-490CW Motherboard Replacement: 步骤 21 中的图像 1，2 Brother MFC-490CW Motherboard Replacement: 步骤 21 中的图像 2，2

    • Lable the white cable before removal.

    • Add a label to the port where the white power cable is inserted.

    • Remove the rear black and white power cables.

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  23. Brother MFC-490CW Motherboard Replacement: 步骤 22 中的图像 1，3 Brother MFC-490CW Motherboard Replacement: 步骤 22 中的图像 2，3 Brother MFC-490CW Motherboard Replacement: 步骤 22 中的图像 3，3

    • Squeeze the clips of the cover protecting the orange power cable.

    • Lift the cover away from the motherboard and set it aside.

    • Gently lift the orange power cable away from the motherboard.

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  24. Brother MFC-490CW Motherboard Replacement: 步骤 23 中的图像 1，3 Brother MFC-490CW Motherboard Replacement: 步骤 23 中的图像 2，3 Brother MFC-490CW Motherboard Replacement: 步骤 23 中的图像 3，3

    • Gently, lift the data cables away from the motherboard.

    • To avoid any confusion, create a diagram of the location of the data cables and label the them.

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  25. Brother MFC-490CW Motherboard Replacement: 步骤 24 中的图像 1，3 Brother MFC-490CW Motherboard Replacement: 步骤 24 中的图像 2，3 Brother MFC-490CW Motherboard Replacement: 步骤 24 中的图像 3，3

    • Using a screwdriver, remove the four 12.1 mm screws.

    • Lift the motherboard away from the rest of the device.

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结论

To reassemble your device, follow these instructions in reverse order.

2等其他人完成本指南。

作者

与5其他贡献者

Henry Cho

于10/29/14注册

1,037 声望

创作了2篇指南

徽章: 13

+ 10更多徽章

团队

UMass Dartmouth, Team 4-4, Miles Fall 2014 UMass Dartmouth, Team 4-4, Miles Fall 2014 的会员

UMASSD-MILES-F14S4G4

3 名成员

创作了8篇指南

2条评论

How Did you program the new mainboard with serial # and other info???

Dj Damir (Dj Damir) - 回复

Also works for DCP J715W and probably others since they all look alike.

(Don’t try to pry open the front panels on the DCP J715W. It’s just for decorative purpose, and I broke the one-way plastic clips trying to remove them. The rule seems to be “If you don’t see a screw to remove a part, it’s that you didn’t find it yet” (All meaningful “one-way plastic clips” I found were easily accessible))

El Amri Léo - 回复

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