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 />
Built-in Trackpad Does Not Work<br />
Quick Check<br />
Symptom Quick Check<br />
Built-in Trackpad Does Not Work<br />
• Cursor does not move.<br />
• Select button of trackpad<br />
inoperable<br />
• Multiple touch features<br />
inoperable<br />
Deep Dive<br />
1. Check for environmental factors such as hum<strong>id</strong>ity,<br />
hand lotion or jewelry. Check if user is touching<br />
the trackpad simultaneously with both hands.<br />
2. Clean the trackpad surface (with the computer<br />
powered off) using a clean, dry, lint-free cloth.<br />
3. Make sure all software and firmware updates have<br />
been applied.<br />
Check Result Action Code<br />
1. Can you see the <strong>Apple</strong><br />
Internal Keyboard/Trackpad<br />
continuously listed on USB in<br />
<strong>Apple</strong> System Profiler?<br />
2. Does trackpad look damaged?<br />
Verify trackpad alignment is<br />
proper and click-depth set<br />
screw is at factory setting.<br />
3. Reseat the trackpad flex cable<br />
to the logic board. Does<br />
trackpad work now?<br />
4. Is the trackpad connector on<br />
the logic board damaged?<br />
5. In System Preferences:<br />
Universal Access, turn off<br />
special Keyboard and Mouse<br />
& Trackpad settings. Set for<br />
normal use, enable and test<br />
multiple touch features. Does<br />
trackpad work now?<br />
Yes Go to step 5.<br />
No Go to step 2.<br />
Yes Replace trackpad. Go to step<br />
6.<br />
No Go to step 3.<br />
Yes Loose cable. Issue resolved.<br />
No Go to step 4.<br />
Yes Replace logic board. M24<br />
No Go to step 5.<br />
Yes Settings issue resolved.<br />
No Go to step 6<br />
MacBook Pro (15-inch, 2.53 GHz, M<strong>id</strong> 2009) Symptom Charts — Input/Output Devices 98
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