Apple macbook 13 inch aluminum late 2008 User Manual

MacBook (13-inch, Aluminum, Late 2008) Symptom Charts — Communications 61 2010-06-15
Deep Dive
CheckResultActionCode
1. System Profiler should list 
Bluetooth radio device under 
system hardware.  Is Bluetooth 
device available?
YesBluetooth radio present, verify 
Bluetooth preference settings, 
go to step 2.
NoAttempt Bluetooth repair, go 
to step 5.
2.  System Preferences has a 
Bluetooth panel. Ensure 
Bluetooth is on and 
discoverable. Are there any 
devices listed in pairing 
window?
YesChoose...

MacBook (13-inch, Aluminum, Late 2008) Symptom Charts — Communications 62 2010-06-15
7. Continue to actively test 
a known-good Bluetooth 
device to determine if there 
is a disconnect.  Do not allow 
computer to sleep during this 
test.  Is link lost during test?
YesCheck for software update, 
2.4 GHz radio interference or 
device low battery.
NoKnown-good device passed, 
test with user’s Bluetooth 
device.
8.  Continue to test user’s 
Bluetooth device to determine 
if there is a disconnect.  Do not...

MacBook (13-inch, Aluminum, Late 2008) Symptom Charts — Communications 63 2010-06-15
1. Use Software Update to make 
sure all AirPort/Bluetooth 
software and firmware updates 
have been applied. Ensure 
MAC address filtering is not 
enabled on the base station.  Is 
kernel panic resolved?
YesSoftware issue.
NoGo to step 2.
2.  Reseat the camera cable 
connection to the logic board.  
Is kernel panic resolved?
YesGo to step 4.
NoGo to step 3.
3. Isolate AirPort card by 
removing the I/O connection 
from...

MacBook (13-inch, Aluminum, Late 2008) Symptom Charts — Communications 64 2010-06-15
Quick Check
SymptomQuick Check
Wireless Performance Issue / 
Slow Connection
• Slow or stalled data transfers
• Intermittent connection 
dropouts
1. Check for nearby interference sources in the 
2.4/5GHz range such as microwave ovens or 
cordless phones (Knowledge Base HT1365)
2.  (AirPort) Check the number of users trying to 
use AirPort in the area for possible network 
congestion. Move closer to base station to...

MacBook (13-inch, Aluminum, Late 2008) Symptom Charts — Communications 65 2010-06-15
2. Turn off Bluetooth.  Retest 
AirPort performance.  
Bluetooth circuitry in the 
clamshell is not accessible.   
Refer to Knowledge Base 
TS1809.
YesPossible AirPort interference 
from the Bluetooth card. 
Change AirPort base station 
channel. (Knowledge Base 
TS1809.)
N06
NoContinue by checking 
connections, go to step 3
 
 
3. Run Clamshell Service 
Diagnostic utility and check 
for all devices presence. If not...

MacBook (13-inch, Aluminum, Late 2008) Symptom Charts — Communications 66 2010-06-15
Wireless Input Device Doesn’t Pair
Unlikely cause:  display assembly, logic board, optical drive, hard drive
Quick Check
SymptomQuick Check
Wireless Input Device Doesn’t 
Pair
• Can’t get the system to 
recognize the Bluetooth 
keyboard or mouse
1. Check Bluetooth System Preference is set to 
Discoverable.
2.  Check Bluetooth device has fully charged 
batteries.
3. Check for Bluetooth software updates for both 
the...

MacBook (13-inch, Aluminum, Late 2008) Symptom Charts — Communications 67 2010-06-15
5. Run Clamshell Service 
Diagnostic utility and check 
for all devices presence. If 
not found, reseat camera 
cable with logic board.  Is the 
Bluetooth radio present, on 
and pairing with a known-
good device?
YesBad logic board connection. 
Issue resolved.
NoGo to step 6.
6.  Install and test a known good 
clamshell.  Is the Bluetooth 
radio present, on and pairing 
with a known-good device?
YesReplace display...

MacBook (13-inch, Aluminum, Late 2008) Symptom Charts — Display 68 2010-06-15
Display
Display Anomalies
Quick Check
SymptomQuick Check
Display Anomalies
• Incorrect/missing colors
• Distorted/blurred image
• Pixel anomalies
• Vertical/horizontal lines 
• Non-uniform brightness
• Image flicker
• Image persistence
1. Allow display to reach normal operating 
temperature for about 15 minutes before 
evaluating front-of-screen performance.
2.  Check display preferences for use of custom 
display profile.
3....

MacBook (13-inch, Aluminum, Late 2008) Symptom Charts — Display 69 2010-06-15
Deep Dive: Incorrect/Missing Colors
CheckResultActionCode
1. Verify display is listed in the 
System Profiler’s Graphics/
Displays device tree.
YesThis ensures color profile can 
be matched with LCD. Go to 
step 2.
NoGo to N09.
2.  Verify System Preferences 
Display Profile is valid for 
display being tested.  Color 
profile should be set to Color 
LCD,  user may have created an 
off-color calibration setting.
YesIf display...

MacBook (13-inch, Aluminum, Late 2008) Symptom Charts — Display 70 2010-06-15
Deep Dive: Distorted/Blurred Image
CheckResultActionCode
1. Sample image illustrates loss of 
LVDS data signals to LCD or a 
defective LCD panel.  Inspect & 
reseat LVDS cable connection 
looking for damaged or bent 
pins.  Is image restored with 
reseated cable connection?
YesIssue due to loose connection. 
Display issue resolved.
NoGo to step 2.
If logic board connector 
damage, replace logic board.
M24
2.  Substitute a known...