Rack power and cooling LED indicators (Models 941, 94E)

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 may indicate a failure, they should not be used 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
DASD fan tray assembly Figure 5
Fan sense card Figure 6
Local remote switch card Figure 7
PPS
   Overview (front)
   5/12V DDM power module
   Booster power module
   Sequencer module

Figure 1

Figure 2
Figure 3
Figure 4
Rack identity card Figure 8
Rack operator panel UEPO switch assembly Figure 9
RPC card Figure 10

LEDs on the primary power supply (front)

Figure 1. LEDs on the PPS (front)
LED power supply error display (front side)
Table 2. Interpreting LEDs on the primary power supply (front)
Index LED Function Color LED Off LED On LED Flash
1 Identify for primary power supply Amber normal n/a Identify
2 AC input good Green missing input or CB00 off normal n/a
3 UEPO loop good Green PPS off or UEPO switch is tripped normal n/a
4 208VDC output power good Green PPS off normal n/a
See note 3
5 DDM output power good Green PPS off normal n/a
See note 3
6 PPS fault Amber normal error
See note 1		 n/a
7 On battery Amber normal error
See note 2		 n/a
8 Status display (see MAP2340 Codes on the PPS status display) n/a n/a n/a n/a
Notes:
  1. Indicates one of the following:
    • The PPS has detected an internal error in which case the status display  8  should be displaying a code and an open serviceable event should exist.
    • The PPS cannot communicate with the other PPS in the same rack, or the other PPS has an error.
    • During a repair of the failing PPS, the FRU Identify LED  1  is used to determine the failing PPS.
  2. Both customer mainline power inputs to this rack have been lost and the PPSs are using rack battery power to safely shutdown the storage facility.
  3. Indicates one of the following:
    • PPS firmware is being updated.
    • PPS PBCM corruption has occurred (call next level of support).

LEDs on the 5/12V DDM power module

Figure 2. LEDs on the 5/12V DDM power module
LED power supply DDM
Table 3. Interpreting LEDs on the 5/12V DDM power module
Index LED Function Color LED Off LED On LED Flash
1 Identify Amber normal n/a Identify
2
Boundary A
+12V output
 Green PPS off normal n/a
Amber fault
3
Boundary A
+5V output
 Green normal
Amber fault
4
Boundary B
+12V output
 Green normal
Amber fault
5
Boundary B
+5V output
 Green normal
Amber fault

LEDs on the booster power module

Figure 3. LEDs on the booster power module
All models "Identify" indicator (LED) for a booster power
Table 4. Interpreting LEDs on the booster power module
Index LED Function Color LED Off LED On LED Flash
1 Identify Amber normal n/a Identify
2 208VDC output Green PPS off normal n/a
Amber fault

LEDs on the sequencer module

Figure 4. LEDs on the PPS sequencer module
LEDs on the sequence module
Table 5. Interpreting LEDs on the sequencer module
Index LED Function Color LED Off LED On LED Flash
1 Main 208VDC output Green PPS off normal n/a
Amber fault
2 Protected 208 VDC output 0 Green normal
Amber fault
3 Protected 208 VDC output 1 Green normal
Amber fault

LEDs on the DASD fan tray

Figure 5. The "Identify" indicator (LED) for a DASD fan tray
Identify LED for DASD fan tray
Table 6. Interpreting LEDs on the DASD fan tray
Index LED Function Color LED Off LED On LED Flash
1 Identify Amber Normal n/a Identify

LEDs on the fan sense card

Figure 6. LEDs on the fan sense cards
LEDs on the fan sense cards
Table 7. Interpreting LEDs on the fan sense card
Index LED Function Color LED Off LED On LED Flash
1 Operational Green fenced or no input power operational n/a
2 Identify Amber normal n/a Identify

LED on the local remote switch card

Figure 7. LED on the local remote switch card
Disconnecting the cables from the local remote switch card
Table 8. Interpreting LEDs on the local remote rack identity 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 8. LEDs on the rack identity card
LEDs on the rack identity card
Table 9. Interpreting LEDs on the rack identity card
Index LED Function Location Color LED Off LED On LED Flash
1 Identify C5 Amber Normal N/A Identify

LEDs on the rack operator panel UEPO switch assembly

Figure 9. LEDs on the rack operator panel
LEDs on the rack operator panel
Table 10. Interpreting LEDs on the rack operator panel UEPO switch 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 PPS is fenced
    • The LED is broken
  2. On solid when PPS DDM power is on.
  3. Flashes slow (1 flash per 2 seconds) when a PPS is in Standby, a PPS is not fenced, or the Remote Force Power Off switch is active. Flashes rapidly (2 flashes per second) during the PPS 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 needing repair exist.

      When all serviceable events have been closed or cancelled, 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 10. LEDs on the RPC cards (Models 941, 951)
LEDs on the RPC cards
Table 11. Interpreting LEDs on the RPC cards
Index LED Function Location Color LED Off LED On LED Flash
1 Operational C2 Green fenced, not booted, or no input power operational n/a
2 Identify C2 Amber normal 1 Identify
3 Operational C1 Green fenced, not booted, or no input power operational n/a
4 Identify C1 Amber normal 1 Identify
Notes:
  1. When this LED is on solid, the flash memory in the other RPC card is corrupted.