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imac g4 memory help
#1
The imac g4 I picked up the other day says this in the system profile

Dimm0/J22 Empty

Dimm 1/J20 256 DDR SDram PC2700U - 25330

So who knows which slot is the internal?

Because when I open the bottom plate I found a Apple 256meg small dimm. I pulled and reinstall and still says same in the profile.

So what does this mean?

Internal empty or not recognizing?

or

User upgradable slot not being recognized?

gg
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#2
> I pulled and reinstall and still says same in the profile.

Try pulling the RAM, NOT reinstalling it and starting up.

If the iMac starts up normally then the user-upgradeable slot might be dead or the RAM out of spec.
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#3
I believe Dimm 1/J20 is the user accessible slot...so you'll have to disassemble the entire thing to see if the internal slot is actually empty or just non-functioning. You might try the Apple Hardware Test and/or another memory test first though. Good Luck!
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#4
Ok I remove the user accessible ram and found that the imac still boots.

So,

Dimm0/J22 Empty is the user accessible

Dimm 1/J20 256 DDR SDram PC2700U - 25330

This means the Apple brand chip in the user accessible slot is bad or its something with the slot itself.

I don't have the original disks so I can't do the apple hardware tests.

gg
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#5
gg,

i might be able to burn you a hardware test disc, or upload the file - they are small.
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#6
that would be great, maybe email?

I sent a pm

gg
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#7
goosegunner wrote:
Ok I remove the user accessible ram and found that the imac still boots.

So,

Dimm0/J22 Empty is the user accessible

Dimm 1/J20 256 DDR SDram PC2700U - 25330

This means the Apple brand chip in the user accessible slot is bad or its something with the slot itself.

I don't have the original disks so I can't do the apple hardware tests.

gg




So I booted of my Firewire drive that has 10.4.10 installed and when I open System preferences it says;


Diagnostics
Last Run 12/29/08 2:50pm
Result: Failed
Failure Type: Memory
Memory Slots: Dimm0/J22

So my guess is the Ram is out of Spec?

gg
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#8
Get yer Apple Hardware Test CD Images here: http://www.info.apple.com/support/aht.html
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#9
that version of AHT for iMac is 1.2.2

Mactracker says the iMac 1.25 Ghz needs AHT 2.0.2.
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