简介

If your Cisco Meraki MC74-HW does not detect that the phone is resting on its holder or does not automatically hang up, you may need to replace the phone sensor. Here are the steps to fix the problem with a simple change of the phone sensor. Once the back cover is fully detached from the device, a PH0 screw bit and reverse tweezers are needed to replace the phone sensor.

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步骤 1 Back Housing and Device Stand

Cisco Meraki MC74-HW Phone Sensor Replacement, Back Housing and Device Stand: 步骤 1 中的图像 1，3

Cisco Meraki MC74-HW Phone Sensor Replacement, Back Housing and Device Stand: 步骤 1 中的图像 2，3

Cisco Meraki MC74-HW Phone Sensor Replacement, Back Housing and Device Stand: 步骤 1 中的图像 3，3

Extend the stand as far away as possible from the device.
Remove all four 3 mm Hex 2 screws from the stand.
A bit with a flexible extension may be needed to remove these screws.

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步骤 2

Lift the stand off the device.

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步骤 3

Cisco Meraki MC74-HW Phone Sensor Replacement: 步骤 3 中的图像 3，3

Insert a plastic spudger between the back housing cover and the sensor cover piece.
Work your way slowly around the edges of the device until all the clips have been unclipped.
Do not insert any tool recklessly into the device or you might damage wires and connections.

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步骤 4

Separate the back housing cover from the device completely.

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步骤 5 Phone Sensor

Cisco Meraki MC74-HW Phone Sensor Replacement, Phone Sensor: 步骤 5 中的图像 1，2

Cisco Meraki MC74-HW Phone Sensor Replacement, Phone Sensor: 步骤 5 中的图像 2，2

在这个步骤中使用的工具：

Tweezers

$4.99

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Disconnect the ribbon from the phone sensor board using a pair of reverse tweezers.
Electronic ribbons are very fragile, so pull slowly to disconnect them.