This chapter supplies the information necessary to replace all field-replaceable subassemblies within 1.3 GB IPI tray.
Note - There are systems in the field that differ from the majority of production units in several minor details. When these differences affect the remove-and-replace procedures, this text covers both the standard and the variation.
Caution -
Figure 4-1 shows the subassemblies in the 1.3 GB IPI tray. Refer to this figure when replacing any subassembly in the tray.
Figure 4-1 Subassemblies of the 1.3 GB IPI Tray
You can now replace the subassemblies of your choice by following the instructions given in the appropriate section:
After you have replaced the subassembly, follow the instructions in Section 4.8, "Finishing Up."
Follow these instructions to replace the power supply in the 1.3 GB IPI tray:
The power supply mounting bracket can then be positioned so that the power supply can be removed from the tray.
To replace the power supply, reverse the preceding steps.
Follow these instructions to replace the DC harness in the 1.3 GB IPI tray:
Figure 4-2 DC Harness Cabling in the Tray
To replace the harnesses, reverse the preceding steps.
There are two fan assemblies used in the tray: one is a single fan unit and the other is a 3-unit assembly. Both are described in the procedures that follow:
Refer to Figure 4-1 and remove the fan after first removing the DC power connector and then loosening the two captive mounting screws. Replacement is the reverse of removal.
Refer to Figure 4-1 and remove the triple fan DC power connector and the four screws securing the unit to the front of the tray. Replacement is the reverse of removal.
Follow these instructions to replace the LED board in the 1.3 GB IPI tray:
Caution -
Replacement is the reverse of removal. See Figure 4-3 for the proper routing when replacing the cable to the LED board.
Figure 4-3 LED/Address Cabling in the Tray
To remove the address/LED cable, refer to Figure 4-1 and remove the four connector cabling from each of the four disk drives as well as the four connector cabling from the LED board.
Replacement is the reverse of removal. Refer to Figure 4-3 for the proper routing when replacing the cable to the device select switches and the LED board.
Follow these instructions to replace the device select switch in the 1.3 GB IPI tray:
The rear portion of the switches should now be accessible.
The switch can now be positioned so that the plastic tab locking mechanism on the left-hand side can be released easily.
Replacement is the reverse of removal.
Follow these instructions to replace the IPI data cable in the 1.3 GB IPI tray:
Refer to Figure 4-4 when removing and replacing 1.3 GB IPI drive data connectors.
Figure 4-4 Proper Connecting and Removing Procedures
Replacement is the reverse of removal. Refer to Figure 4-5 for the proper routing of the cable to the disk drives and the tray.
Figure 4-5 Data Cabling in the Tray
Follow these instructions to finish the replacement of the subassemblies in the 1.3 GB IPI tray:
If you have other subassemblies to replace in your system, return to the beginning of this chapter and follow the procedures there.
If you have no other subassemblies to replace in your system, follow the instructions in Chapter 5, "Replacing the Panels and Powering On the System".
