PRAM Battery Replacement Guide for iMac G4 17-inch

Quick Guide: PRAM Battery Replacement

This guide provides instructions for replacing the PRAM battery in an iMac G4 17-inch (EMC 1936). Ensure you have the correct replacement battery (1/2 AA Lithium 3.6V) before starting.

Tools and Parts Required

• Phillips #0 Screwdriver
• T15 Torx Screwdriver
• iFixit Opening Tools
• 1/2 AA Lithium 3.6V battery

Preparation

Before beginning the replacement, unplug all cables from the computer, including the power cable. Lay the computer face-down on a soft cloth to protect the screen and support the neck and base.

Disassembly and Battery Replacement

1. Remove Bottom Plate: Loosen the four Phillips #0 screws on the bottom plate. Carefully remove the base access panel.
2. Access Housing: Remove the four 25mm T-15 screws securing the bottom plate housing.
3. Open Housing: Open the housing plate. Be gentle with the wires connected to the logic board to avoid damage. Note that a fixed plug connector between the logic board and upper unit may cause resistance; pull gently but firmly.
4. Replace Battery: Locate the PRAM battery. Gently remove the old battery from its holder using the plastic opening tool. Insert the new 1/2 AA Lithium 3.6V battery.

Reassembly

To reassemble your device, follow the disassembly instructions in reverse order.