Take ApartKeyboard - 22
| Keyboard | |
| Before you begin, remove | |
| the following: | |
| • Main battery | |
| • I/O door | |
Keyboard | • Top case | |
• Trackball assembly | ||
| ||
| Caution: The | |
| PowerBook140/145/170 | |
| contains CMOS devices that | |
| are very susceptible to ESD | |
| damage. To prevent damage, | |
| wear a grounding | |
| wriststrap. Review the ESD | |
| precautions in Bulletins/ | |
| Safety. |
