Introdução

The PRAM battery on your PowerBook gives the RAM power to store startup information when you shut off your computer. Luckily, it is easily accessible.

Use a coin to turn the battery locking screw 90 degrees clockwise.
  • Use a coin to turn the battery locking screw 90 degrees clockwise.

  • Lift the battery out of the computer.

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Remove the following 10 screws:
  • Remove the following 10 screws:

    • Two 3 mm Phillips in the battery compartment, on either side of the battery contacts.

    • Four 3 mm Phillips around the memory compartment.

    • Four 16 mm Phillips along the hinge.

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Remove the memory compartment cover.
  • Remove the memory compartment cover.

  • Remove the two 12 mm Phillips screws on the Aluminum bracket at the top of the memory compartment.

I had 7mm screws here instead of 12mm. Did without them till later.

gepkes - Responder

I have an Aluminum PowerBook G4 1.67Ghz since 2006.

3/4 (from bottom to top) of the LCD becomes either black or is jumbled each time I turn on the MAC or move the screen. I need to press the LCD at several locations in order for this problem to go.... any advice ?

Polanskiman - Responder

re: Polanskiman; this is usually caused by a loose ribbon connector on the rear of the LCD. Open up the display, remove the LCD, lay flat and re-connect the ribbon plug.

aaiverson - Responder

Rotate the computer 90 degrees clockwise so the power receptacle faces you.
  • Rotate the computer 90 degrees clockwise so the power receptacle faces you.

  • Remove the three 3 mm Phillips screws along the edge of the lower case.

  • When replacing these screws, you must install them in the correct order. Begin by installing the screw closest to the display hinge, then work your way toward the front of the computer.

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Turn the computer 90 degrees clockwise so the hinge faces you.
  • Turn the computer 90 degrees clockwise so the hinge faces you.

  • Remove the lower 5 mm Phillips screw on each side of the hinge (two total).

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Rotate the computer 90 degrees clockwise so the ports face you.
  • Rotate the computer 90 degrees clockwise so the ports face you.

  • Remove the three 3 mm Phillips screws along the edge of the lower case.

  • When replacing these screws, you must install them in the correct order. Begin by installing the screw closest to the display hinge, then work your way toward the front of the computer. Also, be careful not to put the screws in the two holes on either side of the video out port.

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Turn the computer over and open the display.
  • Turn the computer over and open the display.

  • Remove the two 4.2 mm long, 1.5 mm hex screws at the top corners of the upper case (two total).

  • A T6 Torx driver will work, but repeated use will strip the screws.

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Grasp the back corners of the upper case and pull up.
  • Grasp the back corners of the upper case and pull up.

    • Do not pull the upper case off yet; you still need to disconnect the keyboard and trackpad cable.

  • Lift the back of the case up and work your fingers along the sides, freeing the case as you go. Once you have freed the sides, you may need to rock the case up and down to free the front of the upper case.

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Rotate the upper case up and toward the screen, so that the upper case rests against it.
  • Rotate the upper case up and toward the screen, so that the upper case rests against it.

First of all, awesome guide. I am using it in July 2015, and there is no way I could have successfully navigate the typical Apple laptop Rubik's cube of Powerbook maintenance.

Second, there is a REAL trick to removing the upper case here, and it involves knowing what those stupid internal metal catches look like so you can free them without folding your aluminum case into a pretzel.

WildBill - Responder

Remove the amber tape securing the trackpad ribbon to the logic board.
  • Remove the amber tape securing the trackpad ribbon to the logic board.

  • Disconnect the trackpad ribbon from the logic board by pulling up on the connector.

  • Remove the upper case from the computer.

in my g4 there is also a big transparent ribbon (for keyboard?), to the right of the amber trackpad ribbon, that i disconnected before removing case cover.

ykuwabara - Responder

re: ykuwabara; this is due to the differences between the Model A1095 (yours) and the newer A1138 (illustrated here). The A1138 combines the keyboard and trackpad signals into one cable.

aaiverson - Responder

Use a spudger to pry up the PRAM battery from the optical drive.
  • Use a spudger to pry up the PRAM battery from the optical drive.

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Disconnect the PRAM battery cable from the logic board and remove the PRAM battery.
  • Disconnect the PRAM battery cable from the logic board and remove the PRAM battery.

  • Remove tape as necessary.

This step is unnecessary, the drive can be removed without disconnecting the PRAM battery. Simply fold the battery back onto the logic board.

Jeff Johnson - Responder

Conclusão

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

10 outras pessoas concluíram este guia.

Documentos anexados

It would be helpful to know whether a new PRAM battery unit needs charging as in this article

https://discussions.apple.com/thread/239...

or whether it is assumed that it will start charging in the course of normal use.

Ben Bradley - Responder

from looking at other pictures of the PRAM module it appears to have a removable Lithium Coin battery.

Is this battery something standard that I can just pop the old one out and replace it,

or is it special in that it can be recharged or such ??

Steve Jasik 01/05/2016

macnosy - Responder

It is not standard but you can change it anyway...

PowerBook G4 PRAM Battery Replacement

Henry Rasmussen - Responder

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