 Apple Technician Guide MacBook Pro (15-inch, Mid ... - tim.id.au

2010-08-05
2. Verify if you can pair the Apple
Remote with a known-good
system.
3. Go in Security settings of
System Preferences. Uncheck
the “Disable remote control
infrared receiver” if checked,
and verify if Apple Remote
now works.
4. Verify if the Apple Remote now
works.
5. Verify if the Apple Remote now
works.
Built-in Speaker Has No Audio
Unlikely cause: LCD, hard drive, optical drive
Quick Check
Symptom Quick Check
Built-in Speaker Has No Audio
Can’t hear any audio from within
the machine.
Deep Dive
Yes Go to step 3.
No Replace the Apple Remote.
Go to step 3.
Yes Issue resolved.
No Check and reseat the HD/IR/
Sleep LED cable connection
at logic board. Go to step 4.
Yes Issue resolved.
No Replace the HD/IR/Sleep LED
cable. Go to step 5.
Yes Issue resolved.
X04
X03
No Replace logic board. M15
1. Make sure all software updates have been
applied.
2. Check in System Preferences: Sound: Output that
sound output is set to “Internal Speakers”. and
balance is set to center.
3. Use the F12 volume key to set the sound to
maximum.
4. Reset PRAM.
Check Result Action Code
1. Remove any externallyconnected
speakers and verify
if System Preferences: Sound:
Output current setting is set to
“Internal Speakers”.
Yes Internal Audio-out port is
selected. Go to step 3.
No “External Speakers” or “Digital
Out” reported. Go to step 2.
MacBook Pro (15-inch, Mid 2010) Symptom Charts — Input/Output Devices 96