Service manual

Maintenance
4-23
PCBA Drawer Removal/Replacement
Removal of the PCBA drawer requires that both the CPU and I/O PCBAs be removed as a unit.
To extract the PCBA drawer:
1. Remove all external cables from their connectors.
2. Remove the screws (refer to Figure 4-11 below) that attach the rear panel to the 90387.
Figure 4-11: Screw placement for drawer assembly
3. Pull the drawer assembly completely out of the monitor.
To reassemble the PCBA drawer:
1. Slowly reinsert the drawer assembly, being careful to align the PCBA sides with the slots
inside the monitor.
2. Push the drawer completely in to ensure that the connectors on the front of the PCBA
become fully inserted.
3. Re-install the screws that secure the drawer to the monitor.
CAUTION:
• Replacement of ALL screws, hex nuts, and fasteners is required to maintain
Electrical Magnetic Interference (EMI) Emissions within acceptable limits.
Any removal or non-replacement of hardware can cause increased emission
levels and susceptibility to external noise sources.