ByteRot :: eMac PRAM Battery Replacement

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eMac PRAM Battery Replacement

Device	eMac
Difficulty	Very easy
Time	10 minutes
Steps	3

This guide is by mayer on iFixit and is licensed under Creative Commons Attribution-NonCommercial-ShareAlike 3.0. ByteRot mirrors it for non-commercial preservation: formatting changed and photos resized for old browsers; full-size photos and the text are on the FTP in /DOCS/REPAIR. Original guide >>

How to replace the PRAM Battery. Replace the battery if your date and time are resetting or your printer or internet setting are being lost.

Tools: Phillips #2 Screwdriver

Parts: 3.6 Volt .5 AA Lithium Battery

Step 1

• Lay a towel (to protect the screen) on your work area and place the unit face down with the bottom facing you.

Step 2

• The access panel is held in place by one Phillips screw. Unscrew it.
• Unplug the machine after touching the metal housing to prevent ESD (electro static discharge)

Step 3

• The battery is located just to the left and below the RAM slots.
• Note the positive is to the right and negative to the left. There is a + sign located on the logic board to the right of the battery.
• Care must be taken when removing the battery to prevent it dropping into the machine. It pulls straight out. Use a small instrument like a dental pick or flathead screwdriver to lift the + end out. I use a large hemostat to hold the battery.
• After removal of the old battery and replace with a new one by pressing it into place.
• Replace the access panel. Turn it over and plug it in. Start up and go under the Apple to System Preferences - System - Date & Time. If you have an internet connection check the box to automatically and select Apple Americas.
• If no internet just set the date and time manually.
• Next select the Time Zone box. Click the curser on the map to the closest city to you.
• Next click the Clock box and select the type of display you prefer.

Conclusion

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

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