iMac G5 (20-inch iSight) Troubleshooting — Symptom Charts 176
Error Beep(s)

Computer beeps at startup.

Check that the memory DIMMs are iMac G5 (20-inch iSight) compliant. iMac G5 (20-inch 1.
iSight) computers work with memory modules (DIMMs) that meet all of these criteria: •
• DDR2 SDRAM (Double Data Rate 2, Synchronous Dynamic Random Access Memory)
• 533 MHz, PC2-4200 compliant (also referred to as DDR2 533)
• 184-pin, 2.5V
• unbuered and unregistered
There is one RAM slot. The maximum amount of RAM you can install is 2.5 GB. You can use
RAM module sizes of 512 MB, 1 GB, and 2 GB.
DIMMs with any of the following features are not supported in the iMac G5 (iSight)
computers: registers or buers, PLLs, ECC, parity, or EDO RAM.
Reseat the memory into the slot.2.
Replace the memory.3.
Replace the logic board.4.