IBM 88631SU Service Guide - Page 152
backplane
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UPC - 000435913135
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7. Grasp the handle in the middle of the structure and rotate the structure up ( 2 ), allowing the structure to pivot at the chassis front. 8. Lift the structure out of the server, and make sure that the alignment tabs clear the chassis. To install a power-supply structure, complete the following steps. Attention: Do not allow any cables to be pinched or caught on metal protrusions. 1. Align the tabs on the power-supply structure with the notches on the rear of the chassis; then, gently lower the structure into the server. Make sure that the structure is firmly seated in the chassis. 2. Push the two blue latches of the power-supply structure toward the rear of the server until they lock the structure into position. 3. Replace the power supplies. 4. Replace the memory cards. 5. Replace the top cover. 6. Reconnect the external cables and power cords. SAS backplane To remove the Serial Attached SCSI (SAS) backplane, complete the following steps. Release tabs SAS connectors Guide channels 1. Read the safety information that begins on page vii, and "Handling static-sensitive devices" on page 114. 2. Turn off the server and peripheral devices, and disconnect the power cords and all external cables necessary to replace the device. 3. Remove the top cover. 4. Pull the hard disk drives out of the server slightly to disengage them from the SAS backplane. 5. Note where the SAS cables are connected, and then disconnect the 2 SAS cables from the SAS backplane. 6. Squeeze the two blue release tabs. 136 IBM System x3850 Type 8863, 7362: Problem Determination and Service Guide
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