Rack power and cooling LED indicators (Models 98x) (not 983)

This section contains rack power and cooling FRUs that have LED indicators. Each listed assembly is shown with a description of its LEDs. Although LED indicators might indicate a failure, do not use them as a starting point for a repair.

Rack power and cooling FRUs with LEDs

Table 1. Parts of the rack power and cooling assembly that contain LEDs
Assembly Reference
Battery service module (BSM) set Figure 3
DC-UPS DC supply unit (DSU), single-phase Figure 1
DC-UPS DC supply unit (DSU), three-phase Figure 2
Local remote switch card Figure 5
Power distribution unit Figure 4
Power junction assembly (PJA) Figure 9
Rack identity card Figure 6
Rack operator panel assembly Figure 7
RPC card Figure 8

LEDs on the DC Supply Unit (DSU)

Figure 1. LEDs on the DC-UPS DC Supply Unit (DSU) (Models 98x, single-phase), rear of rack
LEDs on the DC-UPS DC Supply Unit (DSU) (Models 98x, 8xE), rear of rack
Figure 2. LEDs on the DC-UPS DC Supply Unit (DSU), rear of rack (Models 98x, three-phase), rear of rack
LEDs on the DC-UPS DC Supply Unit (DSU), rear of rack
Table 2. Interpreting LEDs on the DC Supply Unit (DSU), rear of rack
Index LED Function Color LED Off LED On LED Flash
1 DDM output Green Output off Normal Error1
2 Main output Green Output off Normal Error1
3 Input from partner DSU Green Error1 Normal N/A
4 Digital status code display2        
5 LOCAL AC (input) Green Input off Normal Error
6 DSU SERVICE Amber Normal Error Identify
7 AC MISMATCH (input) Red Normal Error N/A
8 Processor is operational3 Green Error N/A Normal
Notes:
  1. Error on local or partner DSU. Repair by using serviceable event.
  2. See MAP2341 Codes on the DC-UPS DSU status display for status code description. Repair by using serviceable event.
  3. This LED is for manufacturing only; it is not used for field service.

LEDs on the Battery Service Module (BSM) set

Figure 3. Battery service module, primary, locations (front)
Battery service module, primary, locations (front)
Table 3. Interpreting LEDs on the BSM set
Index LED Function Color LED Off LED On LED Flash
1 Charger status Green On battery Normal Charging
2 Fault/Identity Amber N/A Fault Identify
3 On Battery Red Normal On battery N/A

LEDs on the Power Distribution Unit

Figure 4. Output power indicator (LED) for a power distribution unit
Locations for power distribution unit (PDU) connectors
Table 4. Interpreting LEDs on the power distribution unit
Index LED Function Color LED Off LED On LED Flash
LEDs n Output power Green Off1 Normal n/a
Notes:
  1. Each power output port is protected by a non-replaceable fuse. If only one output power LED is off, there is a problem with the power distribution unit.

LED on the local remote switch card

Figure 5. Local remote switch card locations
Note: Model 98x local remote switch card identify LED is similar; the card is at right rear of rack.
Model 951, Model 961 "Identify" indicators (LEDs) for local remote and zSeries local remote switch cards
Table 5. Interpreting LEDs on the local remote switch card
Index LED Function Location Color LED Off LED On LED Flash
3 Identify C6 Amber Normal N/A Identify

LEDs on the rack identity card

Figure 6. Location codes for the rack identity card
Note: Identify LED is at top of card, above white service power switch. The card is at right rear of rack.
Location codes for the rack identity card
Table 6. Interpreting LEDs on the rack identity card
Index LED Function Location Color LED Off LED On LED Flash
N/A Identify C5 Amber Normal N/A Identify

LEDs on the rack operator panel assembly

Figure 7. Rack operator LEDs on upper left of rack front cover
Rack operator LEDs on upper left of rack front cover
Table 7. Interpreting LEDs on the rack operator panel assembly
Index LED Function Color LED Off LED On LED Flash
1 Line cord 1 Green 1 2 3
2 Line cord 2 Green 1 2 3
3 Identify or System Attention Amber Normal Attention4
(Rack-1 only)		 Identify4
Notes:
  1. Off under any of the following conditions:
    • Customer power is not present
    • Standby power is present and the Remote Force Power Off is not active
    • The corresponding RPC or DC-UPS is fenced
    • The LED is broken
  2. On solid when DC-UPS DDM power is on.
  3. Flashes slow (1 flash per 2 seconds) when a DC-UPS is in Standby, a DC-UPS is not fenced, or the Remote Force Power Off switch is active. Flashes rapidly (2 flashes per second) during the DC-UPS power ON, power OFF, and Force Power OFF sequences.
  4. This LED is used for the following purposes:
    • For Rack-1 only:

      If the LED is lit solid, it indicates Attention status, which means that one or more open serviceable events that need repair exist.

      When all serviceable events are closed or canceled, the LED changes to off.

      When both attention and identify status exist on Rack 1, the identify indication is shown and the LED flashes.

    • For all racks:

      If 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 for which a cable is connected.

LEDs on the RPC cards

Figure 8. LEDs on the RPC cards (Model 98x)
LEDs on the RPC cards (Model 98x)
Table 8. Interpreting upper LEDs on the RPC cards
Index LED Function Color LED Off LED On LED Flash
1 Operational Green Fenced, not booted, or no input power Operational N/A
2 Identify Amber Normal 1 Identify
Notes:
  1. When this LED is on solid, the flash memory in the other RPC card is corrupted.
Table 9. Interpreting Lower LEDs on the RPC cards (Only for use by next level of support.)
LED Callout label 3 Status 0 (upper) Callout label 4 Status 1 (lower)
On solid Normal operation Normal operation
1 flash Watchdog timeout history Primary clock check, card is operational
2 flash SSRAM parity check history Other RPC card is fencing this RPC card
3 flash FPGA CRC check history Card ID parity check, card is not operational
4 flash FPGA heartbeat check history RPC power fault
5 flash Code not operational (not used)
OFF Not operational Secondary clock check or not operational

LEDs on the power junction assembly (PJA)

Figure 9. Power junction assembly (PJA) locations (models 980, 981, 982)
Model 98x power junction assembly (PJA) locations
Table 10. Interpreting LEDs on the power junction assembly (PJA) (models 980, 981, 982)
Index LED Function Color LED Off LED On LED Flash
J1 12 V output Green No output power to primary management console (MC1) Normal N/A
J2 12 V output Green No output power to secondary management console (MC2) Normal N/A
J3 N/A   J3 not present in this model    
J4 12 V input Green No input power from 12 V power supply Normal N/A
J5 12 V output Green No 12 V output power to Ethernet switch SW1 Normal N/A
J6 12 V input Green No input power from 12 V power supply Normal N/A
J7 12 V output Green No 12 V output power to Ethernet switch SW2 Normal N/A
J8 12 V input Green No input power from 12 V power supply Normal N/A
J9 12 V output Green No 12 V output power to management console display Normal N/A
Figure 10. Power junction assembly (PJA) locations (models 984, 985, 986, 988)
Model 984, 985, 986, 988 power junction assembly (PJA) locations - E41 and E42
Table 11. Interpreting LEDs on the power junction assembly (PJA) (models 984, 985, 986, 988)
Index LED Function Color LED Off LED On LED Flash
J1 12 V output Green No output power to primary management console (MC1) Normal N/A
J2 12 V output Green No output power to secondary management console (MC2) Normal N/A
J3 N/A   J3 not present in this model    
J4 12 V input Green No input power from I/O enclosure Normal N/A
J5 12 V output Green No 12 V output power to Ethernet switch SW1 Normal N/A
J6 N/A   J6 not present in this model    
J7 12 V output Green No 12 V output power to Ethernet switch SW2 Normal N/A
J8 N/A   J8 not present in this model    
J9 12 V output Green No 12 V output power to management console display Normal N/A
Figure 11. Direct power junction assembly (direct PJA) locations (models 984, 84E, 985, 85E, 986, 86E, 988, 88E)
Model 98x direct power junction assembly (direct PJA) locations - E51, E52, E53, and E54
Table 12. Interpreting LEDs on the direct power junction assembly (direct PJA) locations (models 984, 84E, 985, 85E, 986, 86E, 988, 88E)
Index LED Function Color LED Off LED On LED Flash
J10 12 V input Green No input power from I/O enclosure Normal N/A
J11 12 V output Green No 12 V output power to microbay Normal N/A
J12 12 V output Green No 12 V output power to microbay Normal N/A