Apple Technician Guide - tim.id.au
Apple Technician Guide - tim.id.au
Apple Technician Guide - tim.id.au
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2010-08-05<br />
3. In the <strong>Apple</strong> System Profiler,<br />
can you see the AirPort and<br />
Bluetooth cards?<br />
4. Reseat the keyboard backlight<br />
connection to the logic board.<br />
Does the keyboard backlight<br />
work now?<br />
5. Measure the voltage between<br />
pin 4 and pin 2 of the<br />
keyboard backlight connector<br />
J5815. Is there voltage present<br />
with the running system in a<br />
dark room?<br />
Built-in Keyboard Is Not Recognized<br />
Unlikely c<strong>au</strong>se: LCD, hard drive, optical drive<br />
Quick Check<br />
Symptom Quick Check<br />
Built-in Keyboard Is Not<br />
Recognized<br />
• Keystrokes not recognized<br />
Deep Dive<br />
Yes The light sensor connection<br />
to logic board is likely good.<br />
Replace display assembly.<br />
No Go to step 4.<br />
Yes Issue resolved.<br />
No Go to step 5<br />
MacBook Pro (15-inch, 2.53 GHz, M<strong>id</strong> 2009) Symptom Charts — Input/Output Devices 100<br />
L14<br />
Yes Replace top case. K10<br />
No Replace logic board. M99<br />
1. Reset SMC.<br />
2. Press Caps Lock. If the Caps Lock light comes on<br />
that indicates at least a partial connection to the<br />
logic board.<br />
3. In System Preferences: International: Input Menu,<br />
enable Keyboard Viewer. Select Show Keyboard<br />
Viewer from the Input Menu in the menu bar.<br />
Test the keyboard.<br />
Check Result Action Code<br />
1. In <strong>Apple</strong> System Profiler do you<br />
see “<strong>Apple</strong> Internal Keyboard/<br />
Trackpad” listed under USB<br />
hardware devices?<br />
Yes Go to step 3.<br />
No Go to step 2.
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