Apple 2009 iMac - Page 53

iMac (21.5-inch, Late 2009) Symptom Charts — Display 53
2010-11-18
6. Isolate with only one memory
module installed, then with the
other one. Test with known-
good memory. Verify if issue
only happens with specic
RAM module(s).
Yes Replace aected RAM
module.
X02
No Go to step 7.
7. Isolate with one known-good
memory module installed in
one memory slot. Repeat by
testing in other memory slots
Verify if issue only happens
with specic memory slot of
logic board.
Yes Replace logic board and
retest.
M07
No Go to step 8.
8. Remove LVDS cable between
LCD panel and logic board and
verify if there is damage to
cable or connectors.
Yes Replace LVDS cable.
Go to step 9.
X04
No Reinstall LVDS cable.
Go to step 9.
9. Verify if issue is still present
after reinstalling LVDS cable.
Yes Replace logic board. If video
card was present, reinstall
original video card.
Go to step 10.
M04
No Issue resolved.
10. Verify if issue is still present
with replacement logic board
installed.
Yes Go to step 11.
No Issue resolved.
11. Reinstall original logic board
and verify if issue is still present
with original logic board
reinstalled.
Yes Replace LCD panel. L04
No Issue resolved. If a video card
was present, reinstall original
video card.