Interpreting LEDs

Interpreting Blade Status LEDs

Each of the following library blades has a set of green, amber, and blue LEDs that indicate blade processor status, health status, and power control status:

Management Control Blade (MCB)
Control Management Blade (CMB)
Ethernet Management Blade (EMB)
Fibre Channel (FC) I/O Blade
Ethernet Expansion Blade
Robotics Control Unit (RCU)
Library Motor Drive (LMD)
Library Power Control (LPC)

Click the image below to show the locations and colors of the status LEDs on the five blades that can be in the library.

Blade status LEDs provide troubleshooting information that you can use in conjunction with tickets that the library creates. However, the LEDs might not directly correspond to tickets. The LEDs can indicate a firmware or hardware problem so severe that the library cannot create or display a ticket. For example, if the MCB firmware becomes inoperable, the amber LED flashes at 1 Hz, but the library might not be able to display any related tickets.

**Table 1:** Explanations of Blade Status LED States
LED Color	Represents	Possible States and Explanations
Green	Processor status	Solid off — blade’s main processor is not operating (or blade is booting) Solid on — blade’s main processor is not operating (however, this does not apply to the LMD; solid on indicates that the LMD’s main processor is operating normally) Blinks one time every second (1 Hz) — blade’s main processor is operating normally Blinks 10 times every second (10 Hz) — identify mode Solid on for three seconds, then blinks twice at 1 Hz, and then repeats — blade firmware is downloading
Amber	Health status	Solid off — blade’s power and control subsystem is operating normally Solid on — blade’s power and control subsystem has failed Solid on also can mean that the blade’s power and control subsystem firmware is auto-leveling. In conjunction with the blue amber LED blinking one time every 10 seconds, this is a normal condition. Auto-leveling takes about three minutes for each blade, and blades within an I/O management unit auto-level in series. It can take as long as three minutes for the power and control subsystem to download. Never remove a blade when the amber LED is solid on unless it has been on continuously for at least 10 minutes.
Blue	Power control Status	Solid off — blade is not receiving power Solid on — blade is powered down; ready to be replaced (swap mode) Blinks one time every 10 seconds (flash) — blade is powered on; operating normally

**Table 2:** Blade Status LED States - Normal Conditions
LED Color	State and Explanations
Green	Blinks one time every second (1 Hz) — blade’s main processor is operating normally (however, this does not apply to the LMD; solid on indicates that the LMD’s main process is operating normally) Note: If there are issues during an update using an embedded flash, the green LED is solid for two seconds, and then off for one second.
Amber	Solid off — no errors are detected; blade’s power and control subsystem is operating normally
Blue	Blinks one time every 10 seconds (flash) — blade is powered on; operating normally

Actions Based on LED States

When the RAS system is operating properly, service actions should be based on tickets first and foremost. However, some situations occur when the amber LED indicates problems that are not detected by the ticket system. You should always act on any amber LED that is solidly on, which indicates that the blade’s power and control subsystem has failed. In this case, replace the blade.

When you replace a blade FRU or escalate a problem based on LED states, perform the following steps:

Observe and report the timing pattern of the blue, amber, and green LED group. Spend at least 30 seconds observing the LEDs and record the results in the service request (SR) and on any equipment failure report form that you return with the part. Proper reporting of all LED states is critical for determining the root cause of the failure.
Capture a system snapshot and send it to technical support for analysis.

Interpreting Drive Status LEDs

The library reports all drive issues that can affect customer operations. In addition to examining library reports, you should observe drive sled link LED and status LED activity.

**Table 3:** Drive Sled Status LED States
LED Color	Represents	Possible States and Explanations
Green	Processor status	Solid off — drive sled’s main processor is not operating (or blade is booting) Solid on — drive sled’s main processor is not operating Blinks one time every second (1 Hz) — drive sled’s main processor is operating normally Blinks 10 times every second (10 Hz) — identify mode Solid on for three seconds, then blinks twice at 1 Hz, and then repeats — drive sled or drive brick firmware is downloading Blinks three times in three seconds (1 Hz), then pauses (solid off), and then repeats — drive brick is activating (varying on)
Amber	Health status	Solid off — drive sled’s controller (drive DC to DC converter [DDC]) is operating normally Solid on — drive sled’s DDC has failed
Blue	Power control Status	Solid off — drive sled is not receiving power Solid on — drive brick is powered down; ready to be replaced (swap mode) or varied on Blinks one time every 10 seconds (flash) — drive brick is powered on; operating normally

**Table 4:** Drive Sled Status LED States - Normal Conditions
LED Color	State and Explanations
Green	Blinks one time every second (1 Hz) — drive sled’s main processor is operating normally. The green LEDs for all drive sleds that are operating normally blink together.
Amber	Solid off — no errors are detected; drive sled’s controller is operating normally
Blue	Blinks one time every 10 seconds (flash) — drive sled is powered on; operating normally

Interpreting Fibre Port Link LEDs

A fibre port link LED shows the state of the Fibre Channel link and whether the link is ready to transmit commands.

Drive Sled Fibre Channel Link LED

The Fibre Channel link LED for a drive sled is located on the rear of the drive sled.

**Table 5:** Explanation of Fibre Drive Sled Link LED States (UDS-2)
LED Color	Represents	Possible States and Explanations
Green	LIP and activity	Solid on — loop initialization protocol (LIP) has occurred. Blinks at irregular intervals — host command/data activity is occurring.
Amber	Online and light detected	Solid on — the library has enabled the drive data bus; it can detect light through a fiber optic cable.
No color		Solid off — the drive brick is varied off or the drive cannot detect light through a fiber optic cable (equivalent to no fibre cable plugged in). If the drive brick is varied off, the blue status LED will be solid on.

**Table 6:** Explanation of Fibre Drive Sled Link LED States (UDS-3)
LED Color	Represents	Possible States and Explanations
Green	LIP and activity	Solid on — loop initialization protocol (LIP) has occurred. Blinks at irregular intervals — host command/data activity is occurring.
Amber	Online and light detected	Solid on — the library has enabled the drive data bus; it can detect light through a fiber optic cable. Blinks at regular intervals — the library has enabled the drive data bus, but light is not detected through the fiber optic cable.
No color		Solid off — the library has not enabled the drive data bus or the drive brick is varied off. If the drive brick is varied off, the blue status LED will be solid on.

Note: A UDS-2 drive with no fiber optic cable plugged in is healthy if the link LED is solid off. A UDS-3 drive with no fiber optic cable plugged in is healthy if the LED is amber and blinking at regular intervals, indicating that the library has enabled the drive data bus, but no light is detected.

FC I/O Blade Fibre Port Link LED

The link LED for an FC I/O blade fibre port is located next to the port. On the I/O blade faceplate, black lines indicate how each link LED belongs to a port. Click the image below to view LED locations.

**Table 7:** FC I/O Blade Link LED States
FC I/O Blade Model	Possible Green LED States and Explanations
7404 4 gigabit/sec	Solid on — the FC I/O blade has established a link but is not currently transporting data. Blinks — the link is active and is currently transporting data. Solid off — the FC I/O blade has not established a link OR the link is active and is currently transporting a large amount of data.

Interpreting Ethernet Expansion Blade LEDs

The status LEDs for an Ethernet Expansion blade are located at the top of the EEB above ETH 6. Click the image below to view LED locations.

**Table 8:** Ethernet Expansion Blade LED States
Blue	Green	Amber	Description
Off	Off	Off	No power
1 Hz	Off	Off	Powered down - ready for removal
Off	Off	On	Booting
Flash	1 Hz	Off	Normal
Flash	10 Hz	Off	Normal - Identify

**Table 9:** Ethernet Expansion Blade Ethernet Port LED States
LED Color	Possible States and Explanations
Green	Solid on — the link is up; data can be sent or received through the Ethernet port Solid off — the link is not up; data cannot be sent or received through the Ethernet port
Amber	Flashes at irregular intervals — data activity is occurring through the Ethernet port Solid off — no data activity is occurring through the Ethernet port

Interpreting MCB Port LEDs

The MCB has LEDs for the Ethernet, Fibre Channel, and SCSI ports.

MCB Ethernet Port LEDs

The LEDs on the MCB Ethernet port indicate status and activity. Click the image below to view LED locations.

**Table 10:** Explanations of MCB Ethernet Port LED States
LED Color	Possible States and Explanations
Green	Solid on — the link is up; data can be sent or received through the Ethernet port Solid off — the link is not up; data cannot be sent or received through the Ethernet port
Amber	Flashes at irregular intervals — data activity is occurring through the Ethernet port Solid off — no data activity is occurring through the Ethernet port

MCB Fibre Channel and SCSI Port LEDs

The LEDs for the MCB Fibre Channel and SCSI ports are for future use. Ignore LED behaviors that might appear. Click the image below to view LED locations.

Interpreting LBX Terminator LEDs

The LBX terminator has three versions. Version 01 has four LEDs and Versions 03 and 2.0 have six LEDs.

LBX Terminator Version 01 LEDs

The LBX terminator has four green LEDs that indicate the presence of modules in the library. The terminator must be located in the LBX of the last expansion module. The LED status should reflect the physical installed module count of the system.

**Table 11:** Explanations of LBX Terminator LED States (Version 01)
LED On/Off Combinations				Explanation
1	2	3	4	Explanation
Off	Off	Off	Off	Robotics are disabled, the access door is open, or the LBX terminator is misaligned.
On	Off	Off	Off	The library has one control module and no expansion modules.
On	On	Off	Off	The library has one control module and one expansion modules.
On	On	On	Off	The library has one control module and two expansion modules.
On	On	On	On	The library has one control module and three expansion modules.
On	Off	On	On	The library has one control module and four expansion modules.
On	On	Off	On	The library has one control module and five expansion modules.
On	On	On	Off	The library has one control module and six expansion modules.
On	Off	Off	On	The library has one control module and seven expansion modules.

LBX Terminator Version 03 LEDs

The LBX terminator has six green LEDs that indicate the presence of modules in the library.

**Table 12:** Explanations of LBX Terminator LED States (Version 03)
LED On/Off Combinations						Explanation
1	2	3	4	5	6	Explanation
Off	Off	Off	Off	Off	Off	Robotics are disabled, the access door is open, or the LBX terminator is misaligned.
On	Off	Off	Off	Off	Off	The library has one control module and no expansion modules.
On	Off	Off	On	Off	Off	The library has one control module and one expansion modules.
On	Off	Off	On	On	Off	The library has one control module and two expansion modules.
On	Off	Off	On	On	On	The library has one control module and three expansion modules.
On	Off	Off	Off	On	On	The library has one control module and four expansion modules.
On	Off	Off	On	Off	On	The library has one control module and five expansion modules.
On	Off	Off	Off	On	Off	The library has one control module and six expansion modules.
On	Off	Off	Off	Off	On	The library has one control module and seven expansion modules.
On	On	Off	Off	Off	Off	The library has one control module and eight expansion modules.
On	On	Off	On	Off	Off	The library has one control module and nine expansion modules.
On	On	Off	On	On	Off	The library has one control module and ten expansion modules.
On	On	Off	On	On	On	The library has one control module and eleven expansion modules.
On	On	Off	Off	On	On	The library has one control module and twelve expansion modules.
On	On	Off	On	Off	On	The library has one control module and thirteen expansion modules.
On	On	Off	Off	On	Off	The library has one control module and fourteen expansion modules.
On	On	Off	Off	Off	On	The library has one control module and fifteen expansion modules.

LBX Terminator Version 2 LEDs

The LBX terminator has six blue LEDs that indicate the presence of modules in the library.

**Table 13:** Explanation of LBX Terminator LED States
LED On/Off Combinations						Explanation
1	2	3	4	5	6	Explanation
Off	Off	Off	Off	Off	Off	Robotics are disabled, the access door is open, or the LBX terminator is misaligned.
On	Off	Off	Off	Off	Off	The library has one control module and no expansion modules.
On	Off	Off	On	Off	Off	The library has one control module and one expansion modules.
On	Off	Off	On	On	Off	The library has one control module and two expansion modules.
On	Off	Off	On	On	On	The library has one control module and three expansion modules.
On	Off	Off	Off	On	On	The library has one control module and four expansion modules.
On	Off	Off	On	Off	On	The library has one control module and five expansion modules.
On	Off	Off	Off	On	Off	The library has one control module and six expansion modules.
On	Off	Off	Off	Off	On	The library has one control module and seven expansion modules.
On	On	Off	Off	Off	Off	The library has one control module and eight expansion modules.
On	On	Off	On	Off	Off	The library has one control module and nine expansion modules.
On	On	Off	On	On	Off	The library has one control module and ten expansion modules.
On	On	Off	On	On	On	The library has one control module and eleven expansion modules.
On	On	Off	Off	On	On	The library has one control module and twelve expansion modules.
On	On	Off	On	Off	On	The library has one control module and thirteen expansion modules.
On	On	Off	Off	On	Off	The library has one control module and fourteen expansion modules.
On	On	Off	Off	Off	On	The library has one control module and fifteen expansion modules.

Interpreting Power Supply LEDs

Power supply problems are reported in tickets. To physically identify a power supply, note the power supply number and module number in the ticket details. Modules can have up to two power supplies each. The top supply is #1 and the bottom supply is #2. Click the image below to view locations and colors of AC power supply LEDs.

**Table 14:** Explanation of AC Power Supply LED States
LED Color	Represents	Possible States and Explanations
Green (top LED)	AC OK	Solid on — power supply’s AC input is above minimum requirements to operate Solid off — power supply’s AC input is below minimum requirements to operate
Green (middle LED)	DC OK	Solid on — power supply’s output voltage is within specifications Solid off — power supply’s output voltage is outside of specifications
Blue (bottom LED)	Fault	Solid on — indicates any of the following conditions: Power supply output is outside of specifications Current limit has been exceeded Temperature limit has been exceeded Fan failed while AC input is present and above minimum operating voltage AC input is below minimum operating voltage PDU is on, but the Power button on the library’s indicator panel is off Solid off — no faults are detected

Interpreting Gen 2 Robot Status LEDs

The Gen 2 robot has six status LEDs on the front plate of the picker on the robot itself. If there are no problems with the robot, the LEDs should display as follows:

If this is a left-side robot, the Left Position LED should be ON
If this is a right-side robot, the Right Position LED should be ON
The Sensors Engaged, Robot Power, and Robot Rail Engaged LEDs should all be ON
The Sensors Disengaged LED should be OFF

If any of the LEDs are incorrectly illuminated, Quantum Support will need to troubleshoot, adjust, and possibly replace components to make sure all LEDs are correctly illuminated.

**Table 15:** Robot Status LEDs
LED	When ON, indicates the following:
Right Position	Indicates this is a right-side robot.
Sensors Engaged	The Lock/Unlock handle is in the fully Locked position, and the home/parking sensors are positioned correctly for robot operations. It is safe to use the robot for library operations.
Robot Power	Robot control power is ON.
Power Rail Engaged	Connection to power rail is OK.
Left Position	Indicates this is a left-side robot.
Sensors Disengaged	The robot’s X-axis home/parking sensors are disengaged. The robot locking lever is fully unlocked. It is safe to remove the robot from the library.

Interpreting HDEM Tower Enable Button Blinking Pattern

The high-density expansion module (HDEM) operator panel contains a button that allows users to vary on and off the tower (click image below to view). The tower enable button has two colors: Amber (varied off) and green (varied on).

**Table 16:** Tower Status LEDs
LED Pattern	Description
OFF, solid	Tower is not functioning properly or powered off completely
GREEN, solid	Tower is fully active, varied on and online
BLINKING GREEN (1 sec on, 1 sec off)	Tower is initializing/activating to an online or offline, varied on state
AMBER, solid	Tower is varied off, online or offline. Vary off status trumps online/offline status display. Note: It does not matter if the tower is offline or offline if it is varied off or being varied off.
BLINKING GREEN (3 sec ON, 1 sec OFF	Tower is varied on and UI takes the tower offline
BLINKING AMBER (10 HZ frequency)	Tower door is opened while tower is still varied on, or is currently in performing a vary-on or vary-off operation before completing the state transition, regardless of being logically online or offline, hereby interrupting tower motor control.
BLINKING (3 secs AMBER, 1 sec GREEN)	Aisle door opened while tower is varied on, regardless of being logically online or offline, hereby interrupting tower motor control. Note: If the tower was varied off before the aisle power was interrupted, the tower continues to display the vary off blink pattern.
10 Hz blinking pattern	Tower identification initiated