Apple Macbook Pro Aluminum 13-Inch Black Laptop Keyb Technical Guide - Page 97

Built-in Keyboard Is Not Recognized, Symptom, Quick Check, Built-in Keyboard Is Not, Recognized, Check

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2010-06-15 3. Measure the voltage between Yes pin 4 and pin 2 of the keyboard backlight connector J5815. Is there voltage present No with the running system in a dark room? 4. Reseat the keyboard backlight Yes connection to the logic board. Does the keyboard backlight No work now? 5. In the Apple System Profiler, Yes can you see the AirPort and Bluetooth cards? No Replace top case. K10 Go to step 4. Issue resolved. Go to step 5 The light sensor connection L14 to logic board is likely good. Replace display assembly Replace logic board. M99 Built-in Keyboard Is Not Recognized Unlikely cause: LCD, hard drive, optical drive Quick Check Symptom Built-in Keyboard Is Not Recognized • Keystrokes not recognized Quick Check 1. Reset SMC. 2. Press Caps Lock. If the Caps Lock light comes on that indicates at least a partial connection to the logic board. 3. In System Preferences: International: Input Menu, enable Keyboard Viewer. Select Show Keyboard Viewer from the Input Menu in the menu bar. Test the keyboard. Deep Dive Check Result 1. In Apple System Profiler do you Yes see "Apple Internal Keyboard/ Trackpad" listed under USB No hardware devices? Action Go to step 3. Go to step 2. Code MacBook (13-inch, Aluminum, Late 2008) Symptom Charts - Input/Output Devices 97

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MacBook (13-inch, Aluminum, Late 2008) Symptom Charts — Input/Output Devices
97
2010-06-15
3.
Measure the voltage between
pin 4 and pin 2 of the
keyboard backlight connector
J5815.
Is there voltage present
with the running system in a
dark room?
Yes
Replace top case.
K10
No
Go to step 4.
4.
Reseat the keyboard backlight
connection to the logic board.
Does the keyboard backlight
work now?
Yes
Issue resolved.
No
Go to step 5
5.
In the Apple System Profiler,
can you see the AirPort and
Bluetooth cards?
Yes
The light sensor connection
to logic board is likely good.
Replace display assembly
L14
No
Replace logic board.
M99
Built-in Keyboard Is Not Recognized
Unlikely cause:
LCD, hard drive, optical drive
Quick Check
Symptom
Quick Check
Built-in Keyboard Is Not
Recognized
•
Keystrokes not recognized
1.
Reset SMC.
2.
Press Caps Lock.
If the Caps Lock light comes on
that indicates at least a partial connection to the
logic board.
3.
In System Preferences: International: Input Menu,
enable Keyboard Viewer.
Select Show Keyboard
Viewer from the Input Menu in the menu bar.
Test the keyboard.
Deep Dive
Check
Result
Action
Code
1.
In Apple System Profiler do you
see “Apple Internal Keyboard/
Trackpad” listed under USB
hardware devices?
Yes
Go to step 3.
No
Go to step 2.