Apple MacBook Pro 13 inch - Page 50

MacBook Pro (13-inch) Symptom Charts — Startup and Power Issues 50
2010-09-14
4. Remove I/O device where
possible to pinpoint faulty
device:
- Disconnect camera cable
from display assembly (for
AirPort, Bluetooth, camera, and
ambient light sensor). Camera
cable can be disconnected
without aecting startup and
test.
- optical drive cable to isolate
optical drive.
- hard drive cable to isolate
hard drive.
Memory cards can be removed,
relocated, or tested with
known-good memory. Because
system will run on one card,
this is a useful test for nding
bad memory or bad memory
slot.
If issue remains after testing
I/O device, replace with known-
good part(s) to conrm issue
resolved.
Yes System starts up when I/O
device removed, replace
aected I/O device or module
containing it.
If AirPort card presence is
crashing system, replace
AirPort card. If still issue,
replace display assembly (for
Bluetooth, camera, or cable
damage).
If optical drive presence is
crashing system, replace
optical drive cable and retest.
If issue remains try with
known-good optical drive.
If still issue, replace optical
drive.
If hard drive presence is
crashing system, replace hard
drive cable and retest. If issue
remains, try with known-good
hard drive. If still issue, replace
hard drive.
Reseat memory or replace
suspect memory with known-
good memory.
N13
L14
X03
J03
X03
H01
X01
No Symptoms unchanged, go to
step 5.
5. Start up from optical drive or
known-good OS.
Attempt to start up with
original or product OS install
disc, or from an external hard
drive with product OS installed,
and verify that system starts
without kernal panic.
Yes Kernel panics cease running
alternate OS. Run ASD/
DiskUtility to repair and test
hard drive. If repair attempts
fail, repartition hard drive
and reinstall OS. Replace hard
drive if restore fails.
H03
No Symptoms unchanged, go to
step 6.
6. Disconnect display assembly
and test with known-good
display assembly. Verify that
system now starts up without
kernel panic/freeze.
Yes Replace display assembly. L14
No Go to step 7.