Service manual

3
3 – 1
3 Disassembly
This chapter provides step-by-step instructions for disassembling parts and subsystems. When it comes to
reassembly, reverse the procedures (unless otherwise indicated).
We suggest you completely review any procedure before you take the computer apart.
The computer comes in three (3) versions: 3220, 3420 and 3620. The principal differences between
them are cosmetic and minor structural variations of the top and bottom covers. As appropriate, these
differences are noted in the side-bars. Additional component information is available in Appendix A:
Parts Lists or in Appendix B: Circuit diagrams.
CPU Upgrades: You need to remove the keyboard and heat plate.
Note: When re-assembling, make sure the heat plate is not “distorted” and is fastened securely.
LCD Upgrades: You need to remove the keyboard and heat plate.
Changing the LCD module itself, only requires minimal deconstruction.
Note: When re-assembling, make sure the heat plate is not “distorted” and is fastened securely.
Illustrations: To enhance procedural clarity, the illustrations in this chapter do not include all components. Mylar
insulation and adhesive attachments are not shown unless they are critical to the disassembly
process. For information about these parts, please refer to Appendix A: Parts Lists .