Difficulty

Easy

Steps

12

Time Required

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Sections

1

  • Keys, handset hook, etc. repair
  • 12 steps

Flags

2

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  • BackCisco 7945G IP Phone - Disassembly

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Introduction

What you need

Step 1

              Disconnect handset and stand
  • Flip the phone over. Disconnect all wires. Detach a stand. To do it, you need to squeeze two latches that hold the stand. You may need to use a screwdriver or something else to push them

Flip the phone over. Disconnect all wires. Detach a stand. To do it, you need to squeeze two latches that hold the stand. You may need to use a screwdriver or something else to push them

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Step 2

              Remove screws that hold back.
  • Remove two visible screws on the upper part of the phone.
  • Two screws on the bottom are covered with a rubber feet.
  • Fifth screw is hidden under the handset hook. Use star screwdriver to remove it.

Remove two visible screws on the upper part of the phone.

Two screws on the bottom are covered with a rubber feet.

Fifth screw is hidden under the handset hook. Use star screwdriver to remove it.

Step 3

              Remove back cover
  • Removing back part may be tricky… Bottom part may come off easily *after screws removed, however top part has hooks.
  • You may need to try to “shift” back part down, or try to pray it so front part goes up.

Removing back part may be tricky… Bottom part may come off easily *after screws removed, however top part has hooks.

You may need to try to “shift” back part down, or try to pray it so front part goes up.

Step 4

              Disconnecting a screen
  • To remove flat cable, carefully push a gray lock, and then remove the ribbon cable.

To remove flat cable, carefully push a gray lock, and then remove the ribbon cable.

Step 5

              Remove main board
  • Disconnect all visible wires (microphone, speakerphone, and handset hook controls)
  • Remove all visible screws. Two screws on the top are smaller, so, you may use smaller fillips bit.

Disconnect all visible wires (microphone, speakerphone, and handset hook controls)

Remove all visible screws. Two screws on the top are smaller, so, you may use smaller fillips bit.

Step 6

              Clean rubber keypad elements
  • Now you may clean a rubber button pad. If user spilled something on the phone, you may need to clean not just rubber part, but plastic buttons as well.

Now you may clean a rubber button pad. If user spilled something on the phone, you may need to clean not just rubber part, but plastic buttons as well.

Step 7

              Clean handset hook area
  • Remove one screw that holds a handset control board.
  • Unhook a spring that holds hook switch.
  • Clean the area.

Remove one screw that holds a handset control board.

Unhook a spring that holds hook switch.

Clean the area.

Step 8

              Open and clean speaker
  • Speaker box is covered with some kind of rubbery film. You may need to save it, as it improves sound.
  • There are four screws, one exposed, and three covered with rubber film.
  • After all four screws removed, pry and pull the speaker box cover. It has rubber gasket that may hold it in place.

Speaker box is covered with some kind of rubbery film. You may need to save it, as it improves sound.

There are four screws, one exposed, and three covered with rubber film.

After all four screws removed, pry and pull the speaker box cover. It has rubber gasket that may hold it in place.

Step 9

              Front part of the case with display
  • After main board removed, display and all buttons are exposed.

After main board removed, display and all buttons are exposed.

Step 10

              Display with a touch screen
  • Display with touch screen

Display with touch screen

Step 11

              Phone speaker
  • Phone speaker

Phone speaker

Step 12

              Cisco microphone
  • Cisco IP Phone microphone. It installed in the soft rubber block.

Cisco IP Phone microphone. It installed in the soft rubber block.

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

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