DS8000 Service Documentation Version 7.5

MAP1320 Isolating problems using visual symptoms

Visual symptoms should only be used to start a repair if there is no related serviceable event.

MAP1320 Section-1

Before you begin

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

Procedure

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.
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.

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	MAP1320 Section-3
I/O enclosure (host adapters, device adapter)	MAP1320 Section-4
Management console (MC)	MAP1320 Section-7
Rack operator panel	MAP1320 Section-2
Rack power (battery enclosure, fan sense card, local remote switch card, rack identity card, primary power supply, RPC card) - Models 941, 94E	MAP1320 Section-6
Rack power (battery enclosure, local remote switch card, rack identifier card, primary power supply, power distribution unit (PDU), RPC card) - Models 951, 95E	MAP1320 Section-6
Rack power (battery service module, DC-UPS, local remote switch card, rack identifier card, power distribution unit (PDU), RPC card) - Models 961, 96E	MAP1320 Section-6
Storage enclosure (FCIC card, DDMs) - Models 941, 94E (16 DDM slots, 3.5 inch)	MAP1320 Section-5
Storage enclosure (FCIC card, DDMs) - Models 951, 95E (12 DDM slots, 3.5 inch)	MAP1320 Section-8
Storage enclosure (FCIC card, DDMs) - Models 951, 95E (24 DDM slots, 2.5 inch)	MAP1320 Section-8

MAP1320 Section-2

Procedure

Rack operator panel LED indicators show high level status of the primary power supplies, the storage facility containing a FRU that is being replaced, and a request for service. Normally, there should be a serviceable event for any problems needing repair. If there is not, there might be other visual symptoms elsewhere in the storage facility. Use Table 2 to find the visual symptom and then go to the referenced MAP section.

For the definition of the rack operator panel LED indicators, go to:

Figure 1. LEDs on the rack operator panel UEPO switch assembly (Models 941, 94E)

Figure 2. LEDs on the rack front door (Models 951, 95E, 961, 96E)

Rack operator panel LEDs on upper right of rack front cover

Table 2. Rack Operator Panel
Visual Symptom	Description and Action
Both green LED indicators and are off	Ensure that the mainline input CBs on the DC-UPS units or primary power supplies (PPS) are switched on. Have the customer restore mainline power.
Green LED indicator and slow blink (1 flash per second)	This is normal during DC-UPS or PPS power off or power on.
Green LED indicator and fast blink (2 flashes per second)	This is normal when PPS is in standby.
Amber LED indicator is slow blinking.	If the service representative is not logged into the management console and the LED is flashing, it indicates Attention status, which means one or more open serviceable events needing repair exist. When the service representative logs into the management console, the attention indication will be disabled and the LED will be off. If the service representative is logged into the management console and the LED is flashing, it indicates Identify status, which means the service representative is replacing a part that was selected from a serviceable FRU list or from the Parts Exchange menu option. Note: Most, but not all, FRUs have identify indicators. The "light path" identify LEDs are a hierarchy of LEDs that can identify the rack, enclosure, FRU, and even the FRU connector that a cable is connected to.
Amber LED indicator is lit solid.	For Rack-1 only: It indicates Attention status, which means that one or more open serviceable events needing repair exist. When all serviceable events have been closed or cancelled, the LED changes to off. When the service representative logs into the management console, the LED changes to not off. Note: This LED on expansion racks should never be lit solid.

MAP1320 Section-3

Procedure

CEC enclosure problems must normally be identified and repaired using a serviceable event. The only exception would be problems that prevent the CEC enclosure from booting up normally. Use Table 3 to find the visual symptom and then go to the referenced MAP section.

For the definition of the CEC enclosure LED indicators, go to:

Table 3. 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 left most LED) on each power supply should be lit if the rack has customer input power and is not in the UEPO condition. Ensure that the power input cable to each power supply is connected. Check the other CEC enclosure to see if 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.

MAP1320 Section-4

Procedure

I/O enclosure problems must normally be identified and repaired using a serviceable event. Use Table 4 to find the visual symptom and then go to the referenced MAP section.

For the definition of the I/O enclosure LED indicators, go to:

Table 4. 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 front of the I/O enclosure, observe the LEDs on the two power supplies. The power input LED (leftmost LED) on each power supply should be lit if the rack has customer input power and is not in the UEPO condition. If Model 941, 94E, ensure that the power input cable to each power supply is connected at the power supply and the 208V bus bar swing gate behind the PPS power supplies. If Model 951, 95E, ensure that the power input cable to each power supply is connected at the power supply and the Power Distribution Units (PDU) behind the PPS power supplies. If Model 961, 96E, ensure that the power input cable to each power supply is connected at the power supply and the Power Distribution Units (PDU) behind the DC-UPS power supplies. Check the other I/O enclosure to see if the problem is common to all I/O enclosures.

MAP1320 Section-5

Procedure

Storage enclosure problems must normally be identified and repaired using a serviceable event. Use Table 5 to find the visual symptom and then go to the referenced MAP section.
For the definition of the storage enclosure LED indicators, go to Storage enclosure LED indicators (Models 941, 94E).
Table 5. Storage enclosure
Visual Symptom Description and Action

None N/A

Table 5. Storage enclosure
Visual Symptom	Description and Action
None	N/A

MAP1320 Section-6

Procedure

Rack power 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.

For the definitions of the rack power LED indicators, go to:

Table 6. Rack power
Visual Symptom	Description and Action
PPS status display two-digit error codes (Models 941, 94E, 951, 95E)	Error codes report the problem that the PPS has detected and should cause the PPS Fault LED indicator below the PPS status display to be lit. This causes a serviceable event to be created. The only exception would be during an install if the rack is not yet far enough along to report and create a serviceable event. In that case, the installation instructions will provide guidance. For definitions of the PPS LED indicators, go to MAP2340 Codes on the PPS status display.
DC-UPS status display two-digit error codes) (Models 961, 96E)	Error codes report the problem that the DC-UPS has detected. This causes a serviceable event to be created. The only exception would be during an install if the rack is not yet far enough along to report and create a serviceable event. In that case, the install instructions will provide guidance. For definitions of the DC-UPS LED indicators, go to MAP2341 Codes on the DC-UPS DSU status display.

MAP1320 Section-7

Procedure

Management console (HMC) problems can create a serviceable event. If there is a second HMC in this storage complex, it can create a serviceable event for the failing HMC. If a second HMC does not exist and the failing HMC cannot boot, there might be a visual symptom. Repair the HMC platform using the appropriate maintenance manual that is on the IBM® DS8000 series Service Documents CDROM.
- xSeries 335 Type 8676, Type 8830 Hardware Maintenance Manual and Troubleshooting Guide
- xSeries 336 Type 1879 and Type 8837 Hardware Maintenance Manual and Troubleshooting Guide
- IBM System x3550 Type 7978 and 1913 Problem Determination and Service Guide
- ThinkPad® T500 and W500 (15.4-inch widescreen) Hardware Maintenance Manual
- ThinkPad T510, T510i, and W510 Hardware Maintenance Manual
- Hardware Maintenance Manual ThinkPad® T520, T520i, and W520
- Hardware Maintenance Manual ThinkPad® T530, T530i, and W530
- Hardware Maintenance Manual ThinkPad® T540p and W540
Use Table 7 to find the visual symptom and then go to the referenced MAP section.

For the definitions of the rack power LED indicators, go to Management console (MC) server LED indicators.

Table 7. Management console (MC)
Visual Symptom	Description and Action
Cannot login	Go to MAP6000 Entry point for analyzing management console problems.
Not powered on	Go to MAP6000 Entry point for analyzing management console problems.

MAP1320 Section-8

Procedure

Storage enclosure problems must normally be identified and repaired using a serviceable event. Use Table 8 to find the visual symptom and then go to the referenced MAP section.

For the definition of the storage enclosure LED indicators, go to Storage enclosure LED indicators for your model.

Table 8. 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 the display panel at the left of the enclosure. The power LED (top or upper left LED) should be lit if the rack has customer input power and has been powered on. If the LED is out, 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 PDUs. Check the other storage enclosures to see if the problem is common to all storage enclosures.