User`s guide

CDA 7 Maintenance Manual
3-22 77 A7 48UU Rev03
3.4 Disruptive Replacement Procedures
3.4.1 Replacing the Power Distribution Module
The Power Distribution Model replacement procedure is as follows:
1. Power down the system, including PS1 and PS2.
2. Disconnect the AC main cable.
3. Remove the PDM fixing screw.
4. Remove the Module carefully.
5. Unplug the PS1, PS2 and Modem power supply cables from the back of the
module, as shown in Figure 3-9, below:
Modem PS2 PS1
Figure 3-9. Power Distribution Module
6. Insert the replacement module by connecting the cables on the back of the
module.
7. Secure it to the frame.
8. Power up the system.
3.4.2 Replacing the Adapter Card
To replace the Adapter Card, proceed as follows:
1. Power down the system.
2. Disconnect the SCSI/FIPS cables from the card.
3. Remove the two fixing screws from the card.
4. Be sure to take appropriate anti-static precautions.
5. Remove the card from its casing using its extractors.
6. Remount the new card by following the unmounting steps in reverse.