Zenith Data Systems Z-171 PC Series Service Manual page 52

Page 4-8
Disassembly/Reassembly
Main Logic Board
To access the main logic board, remove the back cover and the optional
RGB video board, if so equipped. Refer to Figure 4-6 for the following
procedures.
1. | Unplug the four ribbon cables (J3, J4, J5, J7), the power cable (J6),
and the speaker cable (J12).
2. Grasp the board at the top and bottom edges.
3. Carefully lift the board from the computer.
NOTE: Determine that all of the necessary wires and connectors are acces-
sible before reassembly.
Reverse the previous steps for reassembly.
Figure 4-6: Main Logic Board