MAP1320 Isolating problems using visual symptoms

Before you begin

Most visual symptoms create a related serviceable event that should be used to start the problem repair. Display open serviceable events.

1. Is there a related serviceable event for the visual symptom?
   • Yes, exit this MAP and repair that serviceable event.
   • No, go to the next step.
2. Is the problem that an LED indicator is off when you expect it to be lit?
   • Yes, normally this is caused by the LED or associated circuits being faulty on the FRU that contains the LED. Because the FRU is not listed in a serviceable event FRU list, you should use the exchange parts menu options. Refer to MAP1230 Replace a FRU without using a serviceable event.
   • No, go to the next step.
3. Use Table 1 to find the DS8000® area with the visual symptom and then go to the referenced MAP section.

   Table 1. DS8000 areas

   DS8000 area	Go to
   CEC enclosure (XC1 upper, XC2 lower)	MAP1320 Section-2 CEC enclosure
   I/O enclosure (host adapters, device adapters, zHyperLink adapters)	MAP1320 Section-3 I/O enclosure
   Intelligent power distribution unit (iPDU)	MAP1320 Section-4 Intelligent power distribution unit (iPDU)
   Management console (MC)	MAP1320 Section-5 Management console (MC1, MC2)
   NVMe Flash enclosure, 24 drive slots	MAP1320 Section-6 NVMe flash enclosure, 24 drive slots

1. CEC enclosure problems must normally be identified and repaired by using a serviceable event. The only exception would be problems that prevent the CEC enclosure from booting up normally. Use Table 2 to find the visual symptom and then go to the referenced MAP section.
2. For the definition of the CEC enclosure LED indicators, go to CEC enclosure LED indicators for your model.

   Table 2. CEC enclosure

   Visual symptom	Description and action
   All CEC enclosure LED indicators are off.	The CEC enclosure might not be receiving power. At the rear of the CEC enclosure, observe the LEDs on the two power supplies. The power input LED (the upper LED) on each power supply should be lit if the rack has customer input power. Ensure that the power input cable to each power supply is connected. Check the other CEC enclosure to see whether the problem is common to both CECs.
   The CEC enclosure control panel is not updating and is displaying a 2-character (xx) or 8-character (xxxxxxxx) code.	Go to MAP4360 Codes displayed by the CEC enclosure control panel.
   The CEC enclosure control panel is not updating and is displaying something other than a 2-character (xx) or 8-character (xxxxxxxx) code.	Go to MAP4370 CEC enclosure control panel does not show a normal display.
   The CEC enclosure panel does not display a code that will repair the problem.	Use the Storage Facility Management > storage facility > Server View with right area Views set to Default to display the Reference Code for the CEC enclosure. Use the service processor (FSP) ASMI interface (see MAP6F10 Accessing the ASMI using the management console) to display error logs; Service Aids > Event/Error Logs.

1. I/O enclosure problems must normally be identified and repaired by using a serviceable event. Use Table 3 to find the visual symptom and then go to the referenced MAP section.
2. For the definition of the I/O enclosure LED indicators, go to I/O enclosure LED indicators for your model.

   Table 3. I/O enclosure

   Visual Symptom

   Description and Action

   All I/O enclosure LED indicators are off.

   The I/O enclosure might not be receiving power. At the rear of the I/O enclosure, observe the LEDs on the two power supplies. The power input LED (right LED) on each power supply should be lit if the rack has customer input power. Ensure that the power input cable to each power supply is connected at the power supply and the intelligent Power Distribution Units (iPDU) at the rear of the rack. Check the other I/O enclosure to see whether the problem is common to all I/O enclosures.

1. iPDU problems must normally be identified and repaired by using a serviceable event. Use Table 4 to find the visual symptom and then go to the referenced MAP section.
2. For the definition of the I/O enclosure LED indicators, go to Management console, network, power for your model.

   Table 4. iPDU

   Visual Symptom	Description and Action
   Input voltage LED is flashing	Input voltage is low. Notify customer to correct.
   Input voltage LED is off.	Ensure that mainline power cable is connected at both ends. Notify customer to restore power. If input power is present, replace iPDU.
   Ethernet port amber and green LEDs off.	Not connected to private network. Repair open related serviceable events. Go to MAP7200 Entry point for storage facility private network problems.

Management console (HMC) problems can create a serviceable event. The second HMC can create a serviceable event for the partner HMC.

1. Storage enclosure problems must normally be identified and repaired using a serviceable event. Use Table 6 to find the visual symptom and then go to the referenced MAP section.
2. For the definitions of the storage enclosure LED indicators, go to Storage enclosure LED indicators for your model.

   Table 6. Storage enclosure

   Visual Symptom

   Description and Action

   All storage enclosure LED indicators are off

   The storage enclosure might not be receiving power. At the front of the storage enclosure, observe the LEDs on the display panel at the left of the enclosure. The power LED (top or upper left LED) should be on if the rack has customer input power and has been powered on. If the LED is off, at the rear of the storage enclosure, ensure that the power input cable to each power supply is connected at the power supply and the iPDUs. Check the other storage enclosures to see whether the problem is common to all storage enclosures.