Dio-Ii Motherboard Removal And Replacement - HP 400 Series Servicing Manual

5.5.29 DIO-II Motherboard Removal and Replacement (Model 400s)
To remove the DIO-II motherboard, refer to Figure 5-44 and follow these steps:
1. Remove the top and side covers, CPU board with plate, all DIO-II boards, DIO-
2. Disconnect all cable connectors from the component side of the motherboard.
3. Remove the mass storage cover plate on the left side of the chassis.
4. Remove the lower mass storage mounting screws from the right side of the chas-
5. Disconnect the mass storage power distribution and SCSI cable from the back of
6. Remove the five screws that hold the motherboard to the chassis and to the 3-slot
7. Remove the motherboard by sliding it to the right so that its mounting pins clear
Follow these steps to replace the DIO-II motherboard:
1. Position the motherboard by placing it on its mounting pins. Then slide it to the
2. Install the five motherboard screws to hold the motherboard to the chassis and
3. Connect the mass storage power distribution and SCSI cable to their connectors
4. Reinstall the lower mass storage device.
5. Reinstall the mass storage cover plate.
6. Reconnect all cable connectors to the component side of the motherboard.
7. Replace the remaining assemblies.
5-68 FRU Removal and Replacement
II card cage and center wall, and the right trim plate.
sis and pull the mass storage device out four inches.
the motherboard.
DIO-II card cage front wall.
their holes. Then, pull it out.
left so that its tabs fit into their slots in the chassis. Ensure that the LED board
ribbon cable and power switch cables are clear of the motherboard.
the 3-slot DIO-II card cage front wall.
on the back of the motherboard.