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IBM Power 775 Service Procedure Download Page 18

Power 775 D-Link Service Procedure

PN: 41U8487, EC N44172

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Figure 13 Grouper removed

STEP 17

Do the same for the connectors in the grouper at the other end of the suspect D-Link cable..

STEP 18

Ensure that the problem is not due to dirt, dust, or hair on one of the four connector surfaces in the link. Carefully
clean all connectors in the groupers at both ends of the suspect D-Link cable. See

Section 2.3.1

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Summary of Contents for Power 775

Page 1: ...Power 775 D Link Service Procedure PN 41U8487 EC N44172 1 of 27 Power 775 D Link Service Procedure 9 30 2011 ...

Page 2: ...11 3 2 IDENTIFY THE FRAME CEC AND D PORT SSR TASK 11 3 3 CLEAN THE INDIVIDUAL D LINK CONNECTORS SSR TASK 15 3 4 CLEAN THE D LINK CONNECTORS IN THE GROUPER SSR TASK 16 3 5 RETEST THE LINK CUSTOMER TASK 17 3 6 INSTALL WRAP PLUG SSR TASK 17 3 7 RUN WRAP PLUG TEST NWLINKDIAG CUSTOMER TASK 17 3 8 EVALUATE WRAP PLUG TEST RESULTS SSR TASK 18 3 9 REPLACE AN INDIVIDUAL D LINK OPTICAL CABLE SSR TASK 19 3 10...

Page 3: ...odes 14 Figure 8 Grasping push pull tab Figure 9 Removing D Link Connector 15 Figure 10 Unlatching connector with push pull tab Figure 11 Unlatching next connector in grouper 16 Figure 12 Unlatching last connector in grouper 16 Figure 13 Grouper removed 16 Figure 14 Grouper installation 17 Figure 15 Individual D Link Connector with push pull tab on upper right 19 Figure 16 Insert one connector Fig...

Page 4: ...ng and replacing parts Under CEC Drawer click D Link Optical cables to download PDF p775_d_link_cables pdf This is the only valid source for the latest Power775 D Link Cables Service Procedure pdf 1 3 Required Documents Document Doc Number Location Safety Notices http publib boulder ibm com infocenter powersys v3r1m5 top ic p7hdx G229 9054 pdf Doc G229 9054 InfoCenter Table 2 Required Documents In...

Page 5: ...to all other Hub modules within the same supernode L Links are distinguished as being either LL Links which are electrical links that interconnect all Hubs within a CEC or LR Links which are optical links enclosed within an OBE that interconnect each Hub with all 24 Hubs in the other 3 drawers of the SuperNode MPO Multi Fiber Push on Pull off Type of multi fiber optical connector MTP Branded versi...

Page 6: ... Safety_Notices available from InfoCenter see Section 1 3 http publib boulder ibm com infocenter powersys v3r1m5 topic p7hdx G229 9054 pdf The following cautions apply to all Power775 service procedures CAUTION Energy hazard present Shorting might result in system outage and possible physical injury Remove all metallic jewelry before servicing C001 CAUTION The doors and covers to the product are t...

Page 7: ... got to this Power 775 D Link Service Procedure You should have downloaded this procedure from InfoCenter Website http publib boulder ibm com infocenter powersys v3r1m5 topic p7ee2 p7ee2kickoff htm This is the only valid source for the latest Power775 D Link Service Procedure document ...

Page 8: ... from the CEC drawer can be done by pulling or pushing respectively on its push pull tab Insertion can also be done by pushing on the connector s strain relief boot In most system installations D Links are gathered into Cable Assemblies or wiring harness bundles which consist of a reasonably large number of cables 14 150 or more with vinyl tape or hook and loop tape wrapped around them and connect...

Page 9: ...bust and non brittle but parts may break if pushed or pulled too hard Also the PVC cable jacket may separate from the connector housing if it is pulled too hard No operation in the insertion or removal of an individual connector should require more than about 1 kilogram 9 8 Newtons 2 pound of force roughly equivalent to turning a doorknob Always use the blue purple colored Push Pull tabs for doing...

Page 10: ...ength and complexity of the routing path 2 8 P7IH Hand Tool Kit Required Tools Installation of optical connectors requires a cleaning tool IBM PN 74Y0685 FIBER OPTICAL CLEANING TOOL to clean the front surface of the optical connectors before connecting Testing of D Ports requires the D Link Wrap Plug IBM PN 74Y0792 WRAP PLUG 24 POS STRAIGHT WITH SLEEVE WITH BACK to wrap a D Port transmitter back t...

Page 11: ...E INDIVIDUAL D LINK CONNECTORS SSR TASK 15 3 4 CLEAN THE D LINK CONNECTORS IN THE GROUPER SSR TASK 16 3 5 RETEST THE LINK CUSTOMER TASK 17 3 6 INSTALL WRAP PLUG SSR TASK 17 3 7 RUN WRAP PLUG TEST NWLINKDIAG CUSTOMER TASK 17 3 8 EVALUATE WRAP PLUG TEST RESULTS SSR TASK 18 3 9 REPLACE AN INDIVIDUAL D LINK OPTICAL CABLE SSR TASK 19 3 10 REPLACE A D LINK CABLE IN D LINK GROUPERS SSR TASK 20 3 11 RETES...

Page 12: ... system performance impact due to relying on indirect links If this procedure can be tolerated at this time proceed to STEP 10 If the procedure cannot be tolerated at this time the system will continue to operate on the indirect paths until the single link failure can be repaired STEP 2 Note carefully using the lsnwlinkinfo command on the EMS and cluster topology information which D Port at each e...

Page 13: ...ash as well as the UEPO Panel of the frame Figure 2 System Unit Model F2C Selection Activate LED STEP 7 Locate the frame The UEPO Identify Amber Led see Figure 3 should be flashing If the LEDs are not flashing verify th e FRU via MTMS machine type model serial number The rack level MTMS is located on the face of the UEPO see Figure 3 Open the front and rear door of the frame Identify Amber LED MTM...

Page 14: ...via MTMS machine type model serial number Figure 4 CEC Drawer ID Front Figure 5 CEC Drawer ID Rear STEP 9 Verify that the serial number on the CEC Enclosure VPD label CEC Node serial label matches the location code of the D Link Cable D Link Port requiring service see Figure 6 This is the 7 digit serial number in the location code show in bold below for example U78A9 001 312N003 P1 C15 T1 L3 Figur...

Page 15: ...ocation with the location code or HUB and link id from the customer referencing Figure 7 Figure 7 D Link Port numbering and location codes If the D Link cables are individual proceed to STEP 11 If the D Link cables are aggregated into cable assembly groupers see Figure 10 proceed to STEP 15 ...

Page 16: ...ns label matching or manual cable tracing can be used to verify correct connector identification STEP 12 Remove the D Link Optical connector at each end of the cable from the D Port in the CEC drawer by pulling on the blue purple colored push pull tabs on the connector see Figures 1 and 2 Figure 8 Grasping push pull tab Figure 9 Removing D Link Connector STEP 13 Ensure that the problem is not due ...

Page 17: ...hown into one end of a D Link cable will clearly appear at the other end of the cable Alternatively on smaller system configurations label matching or manual cable tracing can be used to verify correct connector identification STEP 16 Unlatch all of the D Link Optical connectors in the grouper at one end of the cable bundle assembly from the D Ports in the CEC drawer by pulling on the blue purple ...

Page 18: ...e same for the connectors in the grouper at the other end of the suspect D Link cable STEP 18 Ensure that the problem is not due to dirt dust or hair on one of the four connector surfaces in the link Carefully clean all connectors in the groupers at both ends of the suspect D Link cable See Section 2 3 1 ...

Page 19: ...he cable are operational If cleaning the connectors resolved the problem proceed to STEP 44 If cleaning the connectors did not resolved the problem proceed to STEP 22 3 6 Install Wrap Plug SSR Task STEP 22 If the D Link is individual remove the D Link Optical connector at each end of the cable from the D Port in the CEC drawer by pulling on the blue purple colored push pull tabs on the connector s...

Page 20: ...wlinkdiag s 3 d 1 m 4 l 35 This link is operational Sample command with failing output for D Link 15 in supernode 49 drawer 0 hub 3 nwlinkdiag s 49 d 0 m 3 l 47 FR007 CG12 SN049 DR0 HB3 LD15 LOCATION_CODE U78A9 001 1122333 P1 T9 This link is not operational If a cable is installed in the optical port remove the cable and install an optical wrap device instead then re issue the nwlinkdiag command I...

Page 21: ...he wrap plug and insert the cleaned connector of the D Link cable into the D Port at that end Do the final actuation of the connector into the port by pushing on the push pull tab or by pushing on the strain relief boot at the rear of the connector see Figure 16 and Figure 10 When D Link cables are installed it is important that a the key of the MPO connector is oriented upward to align with the K...

Page 22: ...ther end of the cable See Section 2 3 1 STEP 33 Repeat STEP 30 for the D Link Optical connector at the other end of the cable Plug the connector into the port by pushing either on the strain relief boot at the rear of the connector or by pushing on the push pull tab Proceed to STEP 43 ...

Page 23: ...he new cable to match the cable being replaced STEP 37 Plug the connector of the new cable into the grouper at one end STEP 38 Clean all connectors in the grouper See Section 2 3 1 STEP 39 Remove the wrap plug and plug the grouper in by positioning the grouper for the D Link optical connectors at the proper row inserting all connectors in the grouper into their respective D Port adapter receptacle...

Page 24: ...d optical cable 3 12 Confirm that the problem is resolved SSR Task STEP 44 Confirm with the customer whether replacing the cable resolved the problem If the problem is not resolved contact next level of support STEP 45 In the window titled Identify LED Select Enclosure click the Deactivate LED button see Figure 2 and then close this window Figure 19 System Unit Model F2C Selection STEP 46 Close th...

Page 25: ...al lenses optical receivers electrical wiring in the Hub module or receiver circuitry on the D Port B Hub chip A failure in either the transmitting D Port root cause 1 above or the receiving D Port root cause 5 is not field repairable the full CEC drawer is the Field Replaceable Unit The procedure below is designed to isolate whether the root cause of an D Link failure results from failure in the ...

Page 26: ...N STRAIGHT WITH SLEEVE WITH BACK If only one 24 position Straight Wrap Plug is available Steps 4 6 can be executed sequentially on each D Port 5 Wait a few seconds 6 From the EMS run the usr bin nwlinkdiag command on both ports to display information about whether the link is able to train with the wrap device installed and whether the fault can be isolated to a cable Note The lnwlinkdiag command ...

Page 27: ...Power 775 D Link Service Procedure PN 41U8487 EC N44172 27 of 27 5 END OF DOCUMENT ...

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