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

2010-08-05
Built-in Keyboard Does Not Work Properly
Unlikely cause: LCD, hard drive, optical drive
Quick Check
Symptom Quick Check
Built-in Keyboard Does Not Work
Properly
• Keystrokes not recognized
• Locks up
• Displayed characters don’t
match
Deep Dive
1. In System Preferences: International: Input Menu,
enable Keyboard Viewer. Select Show Keyboard
Viewer from the Input Menu in the menu bar.
Test the keyboard.
2. Confirm correct keyboard layout is selected.
3. Update to the latest system software.
4. Press Caps Lock. If the Caps Lock light goes on it
indicates at least a partial connection to the main
logic board.
Check Result Action Code
1. If specific keys are not working,
confirm if they are physically
broken.
2. Reseat keyboard flex cable to
logic board and verify that all
keys are functional.
3. Disconnect and verify that
keyboard flex cable is in good
condition (no delamination or
torn cable end, no missing or
cracked tracks).
Yes Refer to MacBook/
MacBook Pro: Black Keycap
Replacement” (HT4002) or
“MacBook: White Keycap
Replacement” (HT4003). If a
keycap kit is available for this
model, order kit and replace
affected key(s).
Go to step 4.
If a keycap kit is not available
for this model, replace
complete top case.
Go to step 4.
No Go to step 2.
K01
Yes Issue resolved. X99
No Go to step 3.
Yes Go to step 4.
No Replace top case. Go to step 5. K01
MacBook Pro (15-inch, Mid 2010) Symptom Charts — Input/Output Devices 88