DEC DECpc 433 Service Manual page 85

System Box FRU Replacement
System Board
To remove the system board, see
Figure 3-21
and do the following:
1.
Rur.
Setup and record the system configuration
settings.
2. Remove system box outside cover and inner chassis
cover.
3. Remove the intelligent graphics controller.
4. Remove the 2.5-inch hard disk and the 3.5-inch mass
storage device (if applicable).
5. Remove the six standoffs.
6. Tag and disconnect the power supply cable to the
system board.
7. Tag and disconnect the system battery connector.
8. Carefully
pry
the system board at the three snap
standoffs.
Pry
at the end snap standoff first, and then
the center snap standoff.
9. Lift the system board from the chassis and place it in an
anti-static container.
DECpc 433 Workstation Service Guide