Apple 2009 iMac - Page 36

iMac (21.5-inch, Late 2009) Symptom Charts — Startup and Power 36
2010-11-18
3. Use known-good SDRAM in the
system. Verify if system start
without kernel panic now.
Yes Install user’s SDRAM one by
one and test. If kernel panic
repeats, replace aected
SDRAM. Verify if correct
SDRAM specication is being
used.
X01
No Go to step 4.
4. Wait for 20 seconds after
shutdown and disconnect
AirPort cable on logic board.
Verify if system starts without
kernel panic now.
Yes Go to AirPort Card Kernel
Panic symptom ow.
No Go to step 5.
5. Disconnect SATA cable from
hard drive and startup to the
Install DVD in the optical drive
or from an external volume.
Verify if system starts without
kernel panic now.
Yes Go to Hard Drive Not
Recognized symptom ow.
No Go to step 6.
6. Disconnect camera and
microphone cables from logic
board. Verify if system starts
without kernel panic now.
Yes Go to Camera Issues or
Audio: Microphone symptom
ow as appropriate.
No Go to step 7.
7. Disconnect Bluetooth cable
on logic board. Verify if system
starts without kernel panic
now.
Yes
Go to AirPort/Bluetooth
Issues symptom ow.
X99
No Go to step 8.
8. Disconnect SD board on logic
board. Verify if system starts
without kernel panic now.
Yes Go to SD Card Not
Recognized symptom ow.
No Go to step 9.
9. Disconnect optical drive and
test. Verify if system starts
without kernel panic now.
Yes
Go to Optical Drive Not
Recognized symptom ow.
No Replace logic board.