IBM 8685 Hardware Maintenance Manual - Page 81
alignment pin on the chassis; then, lower the air baffle into place.
UPC - 087944957171
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19. Reconnect the SCSI signal cable and power cable to the standard SCSI backplane: a. Make sure that one end of the power cable is still connected to the upper power backplane connector. b. Connect the other end of the power cable (labeled "HDD1") to the standard SCSI backplane. c. Connect the end of the SCSI signal cable that is labeled "HDD backplane" to the standard SCSI backplane. d. If you want to attach the upper drive cage (bays 1 through 6) to a RAID or SCSI adapter, route the SCSI signal cable through the opening in the adapter-support bracket. Do not connect the cable to the adapter at this time. Attention: Do not block the ventilated space in front of the fan assembly. If you do not plan to attach the upper drive cage (bays 1 through 6) to a RAID or SCSI adapter, reconnect the SCSI signal cable to the internal SCSI connector (J15) on the system board. 20. Reconnect the internal cables, except for the IDE signal cable, diskette-drive signal cable, front-fan signal cable, and the cable that you disconnected from the internal SCSI connector (J15) on the system board. 21. Slide the shuttle assembly back into place and secure it by locking the metal-hinge latch. 22. Reconnect the internal IDE signal cable to the IDE system-board connector. Reconnect the diskette-drive signal cable and front-fan signal cable to the corresponding system-board connectors. See "System-board internal cable connectors" on page 45 for cable locations. 23. Close the microprocessor airflow guide located between the front fans and the microprocessors. Insert the tabs into the corresponding slots. 24. Reinstall the air baffle: a. Align and insert the two tabs on the rear of the air baffle into the corresponding slots on the rear of the server. b. Align the hole on the front of the air baffle over the corresponding alignment pin on the chassis; then, lower the air baffle into place. Note: The alignment pin is located near the plastic fastener behind fan 1. c. Press firmly on the two plastic fasteners until they snap into place on the front of the air baffle. This secures the air baffle in the server. 25. In step 17 on page 70, you connected one end of the optional SCSI signal cable to the new 6-Pack hot-swap drive backplane and routed the cable through the opening in the adapter-support bracket. Now complete the procedure by routing the optional SCSI signal cable to a dual-channel RAID or SCSI adapter and connecting the unattached end of the cable to an internal channel connector on the adapter (see "Cabling a RAID or SCSI adapter" on page 58). Attention: Do not block the ventilated space in front of the fan assembly. 26. If you decided to attach the upper drive cage (bays 1 through 6) to a RAID or SCSI adapter in step 19, you must disconnect the SCSI signal cable from the internal SCSI connector (J15) on the system board (see "System-board internal cable connectors" on page 45 for the system-board connector locations). In step 19, you connected one end of the standard SCSI signal cable to the standard SCSI backplane and routed the cable through the opening in the adapter-support bracket. Now complete the procedure by routing the standard SCSI signal cable to the RAID or SCSI adapter and Chapter 4. Customer replaceable units 71