MAP 5800: Light path

MAP 5800: Light path helps you to solve hardware problems on the SAN Volume Controller model 2145-CF8, 2145-8A4, 2145-8G4, 2145-8F4, or 2145-8F2 that are preventing the node from booting.

If you are not familiar with these maintenance analysis procedures (MAPs), first read Using the maintenance analysis procedures.

You might have been sent here because of the following:
  • The Error LED on the operator-information panel is on or flashing
  • Another MAP sent you here
Parent topic: Using the maintenance analysis procedures
Related tasks
Removing and replacing the frame assembly
Removing the fibre-channel adapter assembly
Replacing the fibre-channel adapter assembly
Replacing the SAN Volume Controller 2145-8G4 system board
Related reference
System-information LED

Light path for SAN Volume Controller 2145-CF8

Use the diagnostics LEDs that are located on the system board to solve hardware problems with theSAN Volume Controller 2145-CF8 node.

Ensure that the node is turned on and then perform the following steps to resolve any hardware errors that are indicated by the Error LED and light path LEDs:

  1. Is the Error LED, shown in Figure 1, on the SAN Volume Controller 2145-CF8 operator-information panel on or flashing?
    Figure 1. SAN Volume Controller 2145-CF8 operator-information panel
    This figure shows the operator-information panel forSAN Volume Controller 2145-CF8 with the components identified
    •  5  System error LED
    •  6  Release latch
    NO
    Reassess your symptoms and return to MAP 5000: Start.
    YES
    Go to step 2.
  2. (from step 1)

    Press the release latch and open the light path diagnostics panel, which is shown in Figure 2.

    Are one or more LEDs on the light path diagnostics panel on or flashing?
    Figure 2. SAN Volume Controller 2145-CF8 light path diagnostics panelSAN Volume Controller 2145-CF8 light path diagnostic panel
    NO
    Verify that the operator-information panel cable is correctly seated at both ends. If the error LED is still illuminated but no LEDs are illuminated on the light path diagnostics panel, replace parts in the following sequence:
    1. Operator-information panel
    2. System board
    Verify the repair by continuing with MAP 5700: Repair verification.
    YES
    See Table 1 and perform the action specified for the specific light path diagnostics LEDs. Then go to step 3. Some actions will require that you observe the state of LEDs on the system board. Figure 3 shows the location of the system board LEDs. The fan LEDs are located adjacent to each FAN. To view the LEDs you will need to do the following:
    1. Turn off the node while ensuring that its data is mirrored and synchronized. See MAP 5350: Powering off a SAN Volume Controller node for more information.
    2. (Optional) Identify and label all the cables that are attached to the node so they can be replaced in the same port. Remove the node from the rack and place it on a flat, static-protective surface. See Removing the SAN Volume Controller from a rack.
    3. Remove the top cover.
    4. See Table 1 and perform the action specified for the specific light path diagnostics LEDs. Then go to step 3.
    Figure 3. SAN Volume Controller 2145-CF8 system board LEDs diagnostics panelSAN Volume Controller 2145-CF8 system board LEDs
    •  1  Slot 2 missing PCI riser card LED
    •  2  Enclosure manager heartbeat LED
    •  3  Battery LED
    •  4  IMM heartbeat LED
    •  5  Slot 1 missing PCI riser card LED
    •  6  System error LED
    •  7  Microprocessor 1 error LED
    •  8  DIMM 1-8 error LEDs
    •  9  Fan 1 error LED
    •  10  Fan 2 error LED
    •  11  Fan 3 error LED
    •  12  Fan 4 error LED
    •  13  Fan 5 error LED
    •  14  Fan 6 error LED
    •  15  240 VA error LED
    •  16  Power channel A error LED
    •  17  Power channel B error LED
    •  18  Power channel C error LED
    •  19  Power channel D error LED
    •  20  Power channel E error LED
    •  21  AUX power channel error LED
    •  22  SAS/SATA RAID error LED
    •  23  Microprocessor 2 error LED
    •  24  DIMM 9-16 error LEDs
    Table 1. Diagnostics panel LED prescribed actions
    Diagnostics panel LED Action
    OVER SPEC The power supplies are using more power than their maximum rating. If the OVER SPEC LED is lit, one or more of the six 12V channel error LEDs (A, B, C, D, E, or AUX) is also lit on the system board. Perform the following actions to resolve the problem:
    1. Turn off the node, pull the node forward in the rack, and remove the cover. Do not disconnect power from the node.
    2. Check which 12V channel error LED is lit on the system board, and remove the components listed for that LED:
      • LED A: fans, disk drive, any solid-state drives (SSDs), or disk backplane
      • LED B: fibre-channel adapter and riser, all memory
      • LED C: disk controller, all memory
      • LED D: go to f.
      • LED E: High-speed SAS adapter and riser, if installed
      • LED AUX: fibre-channel adapter and high-speed SAS adapter, if installed
    3. Restart the node to see whether the problem remains.
    4. Reinstall each device that you removed in substep b one at a time. Start the node each time to isolate the failing device.
    5. Replace any failing device.
    6. If no device was isolated, and if LED C or LED D is lit, turn off the node and remove the microprocessor. You need alcohol wipes and thermal grease to replace the microprocessor. Toggle switch block 3 (SW3) bit 6 to allow the server to power on. Restart the server. If the problem has resolved, replace the microprocessor; otherwise, reinstall the microprocessor. In either case, toggle switch block 3 (SW3) bit 6 back to its original position.
    7. If no device was isolated, and if LED AUX is lit, turn off the node and remove the operator-information panel. Toggle switch block 3 (SW3) bit 6 to allow the server to power on. Restart the server. If the problem was resolved, replace the operator-information panel; otherwise, reinstall the operator-information panel. In either case, toggle switch block 3 (SW3) bit 6 back to its original position.
    8. If no failing device is isolated, replace the system board.
    LOG An error occurred. Connect a keyboard and a monitor. Check the IMM system event log and the system error log for information about the error. Replace any components that are identified in the error logs.
    LINK This is not used on the SAN Volume Controller 2145-CF8. Replace the system board.
    PS Power supply 1 or power supply 2 has failed. Perform the following actions to resolve the problem:
    1. Check the power supply that has a lit amber LED.
    2. Make sure that the power supplies are seated correctly.
    3. Remove one of the power supplies to isolate the failed power supply.
    4. Replace the failed power supply.
    PCI An error occurred on a PCI bus or on the system board. An additional LED is lit next to a failing PCI slot. Perform the following actions to resolve the problem:
    1. Identify the failing adapter by checking the LEDs on the PCI slots.
    2. If PCI slot 1 shows an error, replace the 4-port fibre-channel adapter assembly.
    3. If PCI slot 2 shows an error, replace the high-speed SAS adapter assembly.
    4. If the error is not resolved, replace the system board.
    SP A service processor error was detected. Perform the following actions to resolve the problem:
    1. Remove power from the node. Reconnect the server to the power, and restart the node.
    2. If the problem remains, replace the system board.
    FAN A fan has failed, is operating too slowly, or was removed. A failing fan can also cause the TEMP LED to be lit. Perform the following actions to resolve the problem:
    1. Reseat the failing fan, which is indicated by a lit LED near the fan connector on the system board.
    2. If the problem remains, replace the failing fan.
    TEMP The system temperature exceeded a threshold level. A failing fan can cause the TEMP LED to be lit. Perform the following actions to resolve the problem:
    1. Make sure that the heat sink is seated correctly.
    2. Determine whether a fan has failed. If it has, replace it.
    3. Verify that the ambient temperature is within normal operating specifications.
    4. Make sure that airflow in and around the SAN Volume Controller 2145-CF8 is not obstructed.
    MEM A memory configuration or a memory error that is not valid has occurred. Both the MEM LED and CNFG LED might be lit. Perform the following actions to resolve the problem:
    1. Check that all the memory DIMMs are correctly installed.
    2. If any memory error LEDs are lit, replace the indicated memory module.
    3. If the MEM LED and the CNFG LED are lit, adjust the memory so that DIMM slots 2, 3, 5, 6, 7, and 8 are the only ones used.
    NMI A non-maskable interrupt occurred or the NMI button was pressed. This situation should not occur. If the NMI button on the light path diagnostic panel was pressed by mistake, restart the node; otherwise, call your support center.
    CNFG A hardware configuration error occurred. If the MEM LED is also lit, follow the actions shown for MEM LED. If the CPU LED is lit, check to see if a microprocessor is installed in CPU 2. If one is installed, remove it because the configuration is not supported. If no other light path LEDs are lit, replace the FRUs in the order shown until the problem is resolved:
    1. Operator-information panel
    2. Operator-information panel cable
    3. System board
    CPU A microprocessor failed or a microprocessor configuration is not valid. Both the CPU LED and the CNFG LED might be lit. Perform the following actions:
    1. Check the system board error LEDs.
    2. If CPU 1 error LED is lit, check that the microprocessor is correctly installed.
    3. If the error persists, replace the microprocessor.
    4. If the error persists, replace the system board.
    VRM This is not used on the SAN Volume Controller 2145-CF8.
    DASD A disk drive failed or is missing. A SAN Volume Controller 2145-CF8 must have its system hard disk drive installed in drive slot 4. Up to four optional solid-state drives (SSDs) can be installed in drive slots 0 to 3.

    If an SSD has been deliberately removed from a slot, the system error LED and the DASD diagnostics panel LED will light. The error is maintained even if the SSD is replaced in a different slot. If an SSD has been removed or moved, the error is cleared by powering off the node using MAP 5350, removing both the power cables, replacing the power cables, and then restarting the node.

    Resolve any node or cluster errors that relate to SSDs or the system disk drive.

    If an error is still shown, power off the node and reseat all the drives.

    If the error remains, replace the following components in the order listed:
    1. The system disk drive.
    2. The disk backplane.
    RAID This is not used on the SAN Volume Controller 2145-CF8.
    BRD An error occurred on the system board. Perform the following actions to resolve the problem:
    1. Check the LEDs on the system board to identify the component that caused the error. The BRD LED can be lit because of any of the following reasons:
      • Battery
      • Missing PCI riser-card assembly. There must be a riser card in PCI slot 2 even if the optional adapter is not present.
      • Failed voltage regulator
    2. Replace any failed or missing replacement components, such as the battery or PCI riser-card assembly.
    3. If a voltage regulator fails, replace the system board.
  3. Continue with MAP 5700: Repair verification to verify the correct operation.

Light path for SAN Volume Controller 2145-8A4

Use the diagnostics LEDs that are located on the system board to solve hardware problems with the SAN Volume Controller 2145-8A4 node.

Ensure that the node is turned on and then perform the following steps to resolve any hardware errors that are indicated by the Error LED and light path LEDs:

  1. Is the Error LED, shown in Figure 4, on the SAN Volume Controller 2145-8A4 operator-information panel on or flashing?
    Figure 4. SAN Volume Controller 2145-8A4 operator-information panelThis figure shows the SAN Volume Controller 2145-8A4 operator-information panel
    • Reference key one Error LED
    NO
    Reassess your symptoms and return to MAP 5000: Start.
    YES
    Go to step 2.
  2. (from step 1)

    Observe the state of the diagnostic LEDs on the system board. To view the LEDs, follow these steps:

    1. Turn off the node while ensuring that its data is mirrored and synchronized. See MAP 5350: Powering off a SAN Volume Controller node for more information.
    2. Identify and label all the cables that are attached to the node so they can be replaced in the same port. Remove the node from the rack and place it on a flat, static-protective surface.
    3. Remove the top cover.
    4. Turn on the node.
  3. (from step 2)

    Other than the Standby Power, Power good, and the Baseboard management controller heartbeat LEDs, are one or more LEDs on the system board on or flashing?

    NO
    Verify that the operator-information panel cable is correctly seated at both ends. If the error LED is still on but no error LEDs are illuminated on the system board, replace parts in the following sequence:
    1. Operator-information panel
    2. Operator-information panel cable
    3. System board
    Go to step 5.
    YES
    Identify any diagnostic LEDs on the system board that are on. Figure 5 shows the location of the system board LEDs. The fan LEDs are located adjacent to each fan. You can ignore the three LEDs that do not indicate an error:  13 ,  14 , and  15 .
    Figure 5. SAN Volume Controller 2145-8A4 system board LEDsThis figure shows a bird's eye view of the SAN Volume Controller 2145-8A4 system board LEDs
    • Reference key one Fan 1 error LED
    • Reference key two Fan 2 error LED
    • Reference key three Fan 3 error LED
    • Reference key four DIMM 1 error LED
    • Reference key five DIMM 2 error LED
    • Reference key six DIMM 3 error LED
    • Reference key seven DIMM 4 error LED
    • Reference key eight PCI Express slot 2 error LED
    • Reference key nine PCI Express slot 1 error LED
    • Reference key ten Fan 4 error LED
    • Reference key eleven Fan 5 error LED
    • Reference key twelve Voltage regulator error LED
    • Reference key thirteen Standby power LED
    • Reference key fourteen Power good LED
    • Reference key fifteen Baseboard management controller heartbeat LED
    • Reference key sixteen SAS/SATA controller error LED
  4. (from step 3)

    Are any diagnostic LEDs other than  13 ,  14 , and  15  on the system board illuminated?

    NO
    Go to step 5.
    YES
    Refer to Table 2 and replace the parts specified for the specific LEDs one-at-a-time in the following order until the error is repaired. Then go to step 5.
    Table 2. SAN Volume Controller 2145-8A4 diagnostics panel LED prescribed actions
    Diagnostics panel LED Action
    DIMM error LEDs (1 through 4) Replace parts in the following sequence:
    1. Indicated DIMM
    2. System board
    Fan error LEDs (1 through 5) Replace parts in the following sequence:
    1. Indicated fan
    2. System board
    PCI Express® slot 1 error LED Replace parts in the following sequence:
    1. PCI riser card
    2. System board
    3. Fibre-channel adapter
    PCI Express slot 2 error LED This is not used on the SAN Volume Controller 2145-8A4. Replace the system board.
    Voltage regulator error LED Replace the system board.
    SAS/SATA controller error LED This is not used on the SAN Volume Controller 2145-8A4. Replace the system board.
  5. (from step 4)

    Replace the top cover and place the node in the rack. See Replacing the SAN Volume Controller in a rack. Then continue with MAP 5700: Repair verification to verify the correct operation.

Light path for SAN Volume Controller 2145-8G4

Use light path diagnostics to solve hardware problems with the SAN Volume Controller 2145-8G4 node.

Ensure that the node is turned on and then perform the following steps to resolve any hardware errors indicated by the Error LED and light path LEDs:

  1. Is the Error LED, shown in Figure 6, on the SAN Volume Controller 2145-8G4 operator-information panel illuminated or flashing?
    Figure 6. SAN Volume Controller 2145-8G4 operator-information panelThis figure shows the SAN Volume Controller 2145-8G4 operator-information panel
    • Reference key one Release latch
    • Reference key two Error LED
    NO
    Reassess your symptoms and return to MAP 5000: Start.
    YES
    Go to step 2.
  2. (from step 1)

    Press the release latch and open the light path diagnostics panel, which is shown in Figure 7.

    Figure 7. SAN Volume Controller 2145-8G4 light path diagnostics panelLight path diagnostic panel

    Are one or more LEDs on the light path diagnostics panel on or flashing?

    NO
    Verify that the operator-information panel cable is correctly seated at both ends. If the error LED is still illuminated but no LEDs are illuminated on the light path diagnostics panel, replace parts in the following sequence:
    1. Operator-information panel
    2. System board
    Verify the repair by continuing with MAP 5700: Repair verification.
    YES
    See Table 3 and perform the action specified for the specific light path diagnostics LEDs. Then go to step 3. Some actions will require that you observe the state of LEDs on the system board. Figure 8 shows the location of the system board LEDs. The fan LEDs are located adjacent to each FAN. To view the LEDs you will need to do the following:
    1. Turn off the node while ensuring that its data is mirrored and synchronized. See MAP 5350: Powering off a SAN Volume Controller node for more information.
    2. Identify and label all the cables that are attached to the node so they can be replaced in the same port. Remove the node from the rack and place it on a flat, static-protective surface. See Removing the SAN Volume Controller from a rack.
    3. Remove the top cover and open the fan doors.
    4. Press the light path diagnostics button ( 7  in Figure 8).
      Note: The light path diagnostics button is used to illuminate the light path diagnostics LEDs when power is disconnected from the SAN Volume Controller 2145-8G4 node.
    Figure 8. SAN Volume Controller 2145-8G4 system board LEDsThis figure shows a bird's eye view of the SAN Volume Controller 2145-8G4 system board LEDs
    • Reference key one System-board battery error LED
    • Reference key two DIMM 5 error LED
    • Reference key three DIMM 6 error LED
    • Reference key four DIMM 7 error LED
    • Reference key five DIMM 8 error LED
    • Reference key six Light path diagnostics active LED
    • Reference key seven Light path diagnostics button
    • Reference key eight Microprocessor 2 error LED
    • Reference key nine Microprocessor 1 error LED
    • Reference key ten DIMM 1 error LED
    • Reference key eleven DIMM 2 error LED
    • Reference key twelve DIMM 3 error LED
    • Reference key thirteen DIMM 4 error LED
    • Reference key fourteen System-board fault LED
    • Reference key fifteen Power B error LED
    • Reference key sixteen Power A error LED
    • Reference key seventeen Power C error LED
    • Reference key eighteen Power D error LED
    Table 3. Diagnostics panel LED prescribed actions
    Diagnostics panel LED Action
    OVER SPEC Replace parts in the following sequence:
    1. Power supply
    2. Power backplane
    3. System board
    PS1 If you have just replaced the power supply, check that it is correctly installed. If it is correctly installed, replace parts in the following sequence:
    1. Power supply
    2. Power backplane
    PS2 This is not used on the SAN Volume Controller 2145-8G4. This is a false indication. A sensor has failed or the system board service processor firmware is not functioning correctly. Contact your support center to see if a firmware update is available. If not, replace parts in the following sequence:
    1. Power backplane
    2. Operator-information panel
    3. System board
    CPU A microprocessor has failed. Make sure that the failing microprocessor, which is indicated by a lit LED on the system board, is installed correctly. If it is installed correctly, replace the microprocessor.
    VRM This is not used on the SAN Volume Controller 2145-8G4.
    CNFG Microprocessor configuration error. Check the installed microprocessors for compatibility.
    MEM Observe the DIMM LEDs on the system board. If any DIMM LED is flashing, make sure that the correct type of DIMM is installed in every slot. Replace parts in the following sequence:
    1. Failing DIMM
    2. System board
    Note: If more than one DIMM is indicated by the light path diagnostics, replace the DIMMs one-at-a-time, starting at the lowest-numbered DIMM slot that the diagnostics indicated.
    NMI A non-maskable interrupt occurred. Call your support center and check if any software updates need to be applied to this SAN Volume Controller 2145-8G4. If this node will not join the cluster, run node recovery. If node recovery does not resolve the problem, replace the system board assembly.
    S ERR A soft error occurred. Call your support center and check if any software updates need to be applied to this SAN Volume Controller 2145-8G4. If this node will not join the cluster, run node recovery. If node recovery does not resolve the problem, replace the system board assembly.
    SP The Service processor has failed. Replace the system board assembly.
    DASD This is not used on the SAN Volume Controller 2145-8G4. A sensor has failed or the system board service processor firmware is not functioning correctly. Contact your support center to see if a firmware update is available. If not, replace parts in the following sequence:
    1. Operator-information panel
    2. System board
    BRD Observe the battery LED and the system board LED. If the battery LED is illuminated, replace the battery. If the system board LED is illuminated, replace the system board.
    FAN A fan has failed, is operating too slowly, or has been removed. A failing fan can also cause the TEMP LED to be lit. Replace the failing fan, which is indicated by a lit LED near the fan connector on the system board.
    TEMP If any fan failures exist, repair those before attempting this procedure. Verify that the ambient temperature is within normal operating specifications. Make sure that airflow in and around the SAN Volume Controller 2145-8G4 is not obstructed. If the error persists, replace the system board.
    RAID This is not used on the SAN Volume Controller 2145-8G4.
    PCI The fibre-channel card might be failing. Ensure the fibre-channel card and the riser card are correctly installed. If the error persists, replace the fibre-channel card.
  3. Continue with MAP 5700: Repair verification to verify the correct operation.

Light path for SAN Volume Controller 2145-8F2 and SAN Volume Controller 2145-8F4

Use light path diagnostics to solve hardware problems with the SAN Volume Controller 2145-8F2 and SAN Volume Controller 2145-8F4 nodes.

Ensure that the node is turned on and then perform the following steps to resolve any hardware errors indicated by the Error LED and light path LEDs:

  1. Is the Error LED, shown in Figure 9, on the SAN Volume Controller 2145-8F2 or the SAN Volume Controller 2145-8F4 operator-information panel illuminated or flashing?
    Figure 9. SAN Volume Controller 2145-8F4 operator-information panelSAN Volume Controller 2145-8F4 operator-information panel
    • Reference key one Error LED
    • Reference key two Release latch
    NO
    Reassess your symptoms and return to MAP 5000: Start.
    YES
    Go to step 2.
  2. (from step 1)

    Press the release latch and open the light path diagnostics panel, which is shown in Figure 10.

    Figure 10. SAN Volume Controller 2145-8F2 and SAN Volume Controller 2145-8F4 light path diagnostics panelSAN Volume Controller 2145-8F2 and SAN Volume Controller 2145-8F4 light path diagnostic panel

    Are one or more LEDs on the light path diagnostics panel on or flashing?

    NO
    Verify that the operator-information panel cable is correctly seated at both ends. If the error LED is still illuminated but no LEDs are illuminated on the light path diagnostics panel, replace parts in the following sequence:
    1. Operator-information panel
    2. Cable, signal, front panel
    3. Frame assembly
    Verify the repair by continuing with MAP 5700: Repair verification.
    YES
    Refer to Table 4 and perform the action specified for the specific light path diagnostics LEDs, then go to step 3. Some actions will require that you observe the state of LEDs on the system board or on the fan backplanes. The location of the system board LEDs are shown in Figure 11. The fan LEDs are located adjacent to each FAN. To view the LEDs you will need to do the following:
    1. Turn off the node while ensuring that its data is mirrored and synchronized. See MAP 5350: Powering off a SAN Volume Controller node for more information.
    2. Identify and label all the cables that are attached to the node so they can be replaced in the same port. Remove the node from the rack and place it on a flat, static-protective surface. See Removing the SAN Volume Controller from a rack.
    3. Remove the top cover and open the fan doors.
    4. Press the light path diagnostics button Reference key one. See Figure 11.
      Note: The light path diagnostics button is used to illuminate the light path diagnostics LEDs when power is disconnected from the SAN Volume Controller 2145-8F2 or SAN Volume Controller 2145-8F4 node.
    Figure 11. SAN Volume Controller 2145-8F2 and SAN Volume Controller 2145-8F4 system board LEDsThis figure shows a bird's eye view of the SAN Volume Controller 2145-8F2 system board
    • Reference key one Light path diagnostics button
    • Reference key two System board fault LED
    • Reference key three Light path activity LED
    • Reference key four VRM 2 Error LED
    • Reference key five CPU 2 Error LED
    • Reference key six CPU 1 Error LED
    • Reference key seven VRM 1 Error LED
    • Reference key eight Battery LED
    • Reference key nine DIMM 1 error LED
    • Reference key ten DIMM 2 error LED
    • Reference key eleven DIMM 3 error LED
    • Reference key twelve DIMM 4 error LED
    • Reference key thirteen DIMM 5 error LED
    • Reference key fourteen DIMM 6 error LED
    • Reference key fifteen DIMM 7 error LED
    • Reference key sixteen DIMM 8 error LED
    Table 4. Diagnostics panel LED prescribed actions
    Diagnostics panel LED Action
    OVER SPEC Replace the power supply
    PS1 If you have just replaced the power supply, check that it is correctly installed. If it is correctly installed, replace parts in the following sequence:
    1. Power supply
    2. Power backplane
    PS2 This is not used on the SAN Volume Controller 2145-8F2 nor the SAN Volume Controller 2145-8F4. A sensor has failed or the system board service processor firmware is not functioning correctly. Contact your support center to see if a firmware update is available. If not, replace parts in the following sequence:
    1. Power backplane
    2. Operator-information panel
    3. Frame assembly
    CPU Observe the CPU indicators on the system board. The microprocessor adjacent to the illuminated LED is failing. If you have installed the incorrect type of microprocessor, the LED will be flashing. Replace parts in the following sequence:
    1. Microprocessor
    2. Frame assembly
    VRM Observe the VRM indicators on the system board. The VRM adjacent to the illuminated LED is failing. Verify that the VRM is correctly installed. Replace parts in the following sequence:
    1. VRM
    2. Frame assembly
    CNFG Observe all system board LEDs. Make sure that DIMMs, microprocessors, and VRMs are installed correctly and are of the correct type. Replace parts in the following sequence:
    1. Component adjacent to the illuminated LED
    2. Frame assembly
    MEM Observe the DIMM LEDs on the system board. If any DIMM LED is flashing, make sure that the correct type of DIMM is installed in every slot. Replace parts in the following sequence:
    1. Failing DIMM
    2. Frame assembly
    Note: If more than one DIMM is indicated by the light path diagnostics, replace the DIMMs one-at-a-time, starting at the lowest-numbered DIMM slot that the diagnostics indicated.
    NMI A non-maskable interrupt occurred. Call your support center and check if any software updates need to be applied to this SAN Volume Controller 2145-8F2 or SAN Volume Controller 2145-8F4. If this node will not join the cluster, run node recovery. If node recovery does not resolve the problem, replace the frame assembly.
    S ERR A soft error occurred. Call your support center and check if any software updates need to be applied to this SAN Volume Controller 2145-8F2 or SAN Volume Controller 2145-8F4. If this node will not join the cluster, run node recovery. If node recovery does not resolve the problem, replace the frame assembly.
    SP The Service processor has failed. Replace the frame assembly.
    DASD This is not used on the SAN Volume Controller 2145-8F2 or SAN Volume Controller 2145-8F4. This is a false indication. A sensor has failed or the system board service processor firmware is not functioning correctly. Contact your support center to see if a firmware update is available. If not, replace parts in the following sequence:
    1. Operator-information panel
    2. Frame assembly
    FAN Observe the LEDs on the fan backplanes. The fan adjacent to the failing LED is failing. Replace parts in the following sequence:
    1. Fan
    2. Fan backplane
    TEMP If any fan failures exist, repair those before attempting this procedure. Verify that the ambient temperature is within normal operating specifications. Make sure that airflow in and around the SAN Volume Controller 2145-8F2 or SAN Volume Controller 2145-8F4 is not obstructed. Replace the frame assembly.
    BRD Observe the battery LED and the system board LED. If the battery LED is illuminated, replace the battery. If the system board LED is illuminated, replace the frame assembly.
    PCI A This is not used on the SAN Volume Controller 2145-8F2 nor SAN Volume Controller 2145-8F4. This is a false indication. A sensor has failed or the system board service processor firmware is not functioning correctly. Contact your support center to see if a firmware update is available. If not, replace parts in the following sequence:
    1. Operator-information panel
    2. Frame assembly
    PCI B One of the fibre-channel adapter cards connected to this bus might be failing. Ensure that both adapters are correctly installed and that the riser card latches are fully closed. If possible, display the fibre-channel card status on the SAN Volume Controller 2145-8F2 or SAN Volume Controller 2145-8F4 front panel to determine the failing card. Otherwise, remove the fibre-channel cards one-at-a-time to determine the failing card. Replace parts in the following sequence:
    1. Fibre-channel adapter card
    2. Frame assembly
    PCI C Replace the frame assembly.
  3. Continue with MAP 5700: Repair verification to verify the correct operation.
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