Interpreting LED messages

External LEDs

LEDs visible from the C1200 appliance front

The following figure and table shows and describes the LEDs visible from the front of the C1200.

LED	Status indicator	Description
Activity	Green, blinking	The system is actively processing data.
Activity	Off	No activity is detected.
Status	Green	The system is operating normally.
Status	Amber	The system halted or a fault occurred. Note This LED remains lit during boot, while the operating system loads.
Power	Green	The system is receiving power.
	Off	The system is not receiving power.
	Blinking	Sleep/ACPI S1 state.
NIC 1/NIC 2	Green, blinking	Indicates NIC activity.

LEDs visible from the C1200 appliance back

The following figure and table shows and describes the LEDs visible from the back of the appliance. These LEDs are located on the on-board Ethernet ports and on the power supplies.

LED type	Status indicator	Description
NIC network connectivity	Green	The appliance is connected to the network.
NIC network connectivity	Off	There is no network connection present.
NIC network communication	Blinking amber	Data is being transmitted across the network to and from the appliance.
NIC network communication	Off	There is no network activity present.
Power supply LED	Green	The AC power source is good and is powering the system.
	Blinking green	The AC power source is good and the power supply is in standby mode.
	Amber	The AC power source is good, but no power is reaching the power supply or the power supply failed.
	Off	There is no power to this power supply.

LEDs visible from the C2100 appliance front

The following figure and table shows and describes the LEDs visible from the front of the C2100.

LED label	Status indicator	Description
Activity	Green	The system is operating and is active.
	Blinking	The system is actively processing data.
	Off	No activity is detected.
Status	Green	The system is operating normally.
Status	Amber	The system halted or a fault occurred. The fault is displayed in the LCD. Note This LED remains lit during boot, while the operating system loads.
Power	Green	The system is receiving power.
Power	Off	The system is not receiving power.

LEDs visible from the C2100 appliance back

The following figure and table shows and describes the LEDs visible from the back of the C2100. These LEDs are located on the on-board Ethernet ports and on the power supplies.

LED type	Status indicator	Description
NIC network connectivity	Green	The appliance is connected to the network.
NIC network connectivity	Off	There is no network connection present.
NIC network communication	Blinking amber	Data is being transmitted across the network to and from the appliance.
NIC network communication	Off	There is no network activity present.
Power supply LED	Green	The AC power source is good and is powering the system.
	Blinking green	The AC power source is good and the power supply is in standby mode.
	Amber	The AC power source is good, but no power is reaching the power supply or the power supply failed.
	Off	There is no power to this power supply.

Interpreting motherboard LEDs

There are four LEDs at the rear of the motherboard that are visible through the back vents of the appliance or by removing the cover and looking under the NIC riser. These LEDs turn on or off and reflect POST errors generated during the POST portion of the boot sequence.

Corrective action for the motherboard LEDs is a two-step procedure, listed in the following table.

Step	Action
1	Call Network Appliance Customer Support and describe the LED error sequence.
2	If Customer Support corrective actions...	Then...
	Do not require replacing the motherboard	Follow the instructions the Customer Support representative gives you.
	Requires replacing the motherboard	Replace the motherboard, as described in Replacing the motherboard.

The following figure and table shows and describes these LEDs.

POST code	Status indicator from left LED to right LED				Description
POST code	Left			Right	Description
07h	Off	Grn	Grn	Grn	Uncompress various BIOS modules.
08h	Grn	Off	Off	Off	Verify password checksum.
08h	Grn	Off	Off	Off	Verify CMOS checksum.
07h	Off	Grn	Grn	Grn	Read microcode updates from BIOS ROM.
07h	Off	Grn	Grn	Grn	Initializing the processors. Set up processor registers. Select least featured processor as the BSP.
0Bh	Grn	Off	Grn	Grn	Hook before the keyboard `BAT` command is issued.
0Ch	Grn	Grn	Off	Off	Keyboard Controller Test: The keyboard controller input buffer is free. Next, issuing the `BAT` command to the keyboard controller
0Eh	Grn	Grn	Grn	Off	Init after keyboard test: The keyboard controller `BAT` command result was verified. Next, performing any necessary initialization after the keyboard controller `BAT` command test.
0Fh	Grn	Grn	Grn	Grn	Write Command Byte 8042: The initialization after the keyboard controller BAT command test is done. The keyboard command byte is written next.
10h	Off	Off	Off	Red	Keyboard Init: The keyboard controller command byte is written. Next, issuing the pin 23 and 24 `blocking` and `unblocking` commands
10h	Off	Off	Off	Red	Disable and initialize 8259.
11h	Off	Off	Off	Amb	Detect configuration mode, such as CMOS clear.
13h	Off	Off	Grn	Amb	Chipset initialization before CMOS initialization.
19h	Grn	Off	Off	Amb	Init System Timer: The 8254 timer test is over. Starting the memory refresh test next.
1Ah	Grn	Off	Grn	Red	Check Refresh Toggle: The memory refresh line is toggling. Checking the 15 second on/off time next.
23h	Off	Off	Amb	Grn	Setup Interrupt Vectors: Reading the 8042 input port and disabling the MEGAKEY Green PC feature next. Making the BIOS code segment writable and performing any necessary configuration before initializing the interrupt vectors.
24h	Off	Grn	Red	Off	Before Vector: Configuration is required before interrupt vector initialization is completed. Interrupt vector initialization is about to begin.
25h	Off	Grn	Red	Grn	Init interrupt Vectors: Interrupt vector initialization is done.
F2h	Red	Red	Amb	Red	Initialize SMM handler. Initialize USB emulation.
F5h	Red	Amb	Red	Amb	Validate NVRAM areas. Restore from backup if corrupted.
12h	Off	Off	Grn	Red	Load defaults in CMOS RAM if bad checksum or CMOS clear jumper is detected.
					Initializing APP CMOS RAM for appliance servers only.
					Check point after CMOS initialized.
27h	Off	Grn	Amb	Grn	Validate date and time in RTC.
F4h	Red	Amb	Red	Red	Load microcode to all CPUs.
F6h	Red	Amb	Amb	Red	Scan SMBIOS GPNV areas.
15h	Off	Grn	Off	Amb	8254 timer test on channel 2.
					Enable 8042.
					Keyboard reset.
26h	Off	Grn	Amb	Off	Initialize LCD, if supported.
28h	Grn	Off	Red	Off	Set Video Mode: Initialization before setting the video mode is complete. Configuring the monochrome mode and color mode settings next.
29h	Grn	Off	Red	Grn	Debugger hook.
2Ah	Grn	Off	Amb	Off	Init PCI devices and motherboard devices. Pass control to video BIOS. Start serial console redirection.
2Bh	Grn	Off	Amb	Grn	Platform hook.
2Dh	Grn	Grn	Red	Grn	Initialize AMI display manager module. Initialize support code for headless system if no video controller is detected.
2Dh	Grn	Grn	Red	Grn	Scan flash for logos and Initialize logo data areas.
30h	Off	Off	Red	Red	Detect PS/2 mouse.
30h	Off	Off	Red	Red	Hook after c000 ROM control.
2Eh	Red	Red	Amb	Off	Set up video parameters in BIOS data area.
37h	Off	Grn	Amb	Amb	Activate ADM: The display mode is set. Displaying the power-on message next.
					Initialize language module. Display splash logo.
					Display sign-on message, BIOS ID, and processor information.
38h	Grn	Off	Red	Red	Detect USB mouse: Initializing the bus input and general devices next, if present.
34h	Off	Grn	Red	Red	Reset IDE controllers.
39h	Grn	Off	Red	Amb	Displaying bus initialization error messages.
3Ah	Grn	Off	Amb	Red	Display setup message: The new cursor position was read and saved. Displaying the hit setup message next.
40h	Off	Red	Off	Off	Ensure that timer keyboard interrupts are on.
4Bh	Grn	Red	Grn	Grn	Memory Test: The amount of memory above 8 MB was found and verified. Checking for a soft reset and clearing the memory below 8 MB for the next soft reset. If this is a power-on situation, going to checkpoint 4Eh next.
57h	Off	Amb	Grn	Amb	Chipset hook after memory size.
53h	Off	Red	Amb	Amb	Display processor cache size.
54h	Off	Amb	Off	Red	Disable parity and NMI reporting.
60h	Off	Red	Red	Off	Test 8237 DMA Controller: The DMA page register test passed. Performing the DMA Controller 1 base register test next.
65h	Off	Amb	Red	Grn	Init 8237 DMA Controller: The DMA controller 2 base register test passed. Programming DMA controllers 1 and 2 next.
65h	Off	Amb	Red	Grn	Init 8237 DMA Controller: The DMA controller 2 base register test passed. Programming DMA controllers 1 and 2 next.
7Fh	Grn	Amb	Amb	Amb	Extended NMI Enable: Extended NMI source enabling is in progress.
80h	Red	Off	Off	Off	Enable Mouse and Keyboard: The keyboard test started. Clearing the output buffer and checking for stuck keys. Issuing the keyboard reset command next.
81h	Red	Off	Off	Grn	Keyboard Interface Test: A keyboard reset error or stuck key was found. Issuing the keyboard controller interface test command next.
82h	Red	Off	Grn	Off	Check Stuck Key Enable Keyboard: The keyboard controller interface test was completed. Writing the command byte and initializing the circular buffer next.
83h	Red	Off	Grn	Grn	Disable Parity NMI: The command byte was written and global data initialization completed. Checking for a locked key next.
84h	Red	Grn	Off	Off	Verify RAM Size: Checking for a memory size mismatch with CMOS RAM data next.
					Check ATA cable type presence of ATAPI devices.
					Display keyboard message.
16h	Off	Grn	Grn	Red	Display IDE mass storage devices.
17h	Off	Grn	Grn	Amb	Display USB mass storage devices.
85h	Red	Grn	Off	Grn	Report the first set of POST errors to error manager.
86h	Red	Grn	Grn	Off	Boot Password Check: The password was checked. Performing any required programming before next Setup.
8Dh	Amb	Grn	Off	Grn	OEM Patch 9.
					Set Printer RS-232 timeout.
					Init FDD Devices: Resetting the hard disk controller next.
95h	Red	Grn	Off	Amb	Lock out PS/2 keyboard/mouse if unattended start is enabled.
92h	Red	Off	Grn	Red	Option ROM scan.
98h	Amb	Off	Off	Red	Init Boot Devices: The adapter ROM had control and then returned control to BIOS POST. Performing any required processing after the option ROM returned control.
9Bh	Amb	Off	Grn	Amb	Float Processor Initialize: Performing any required initialization before the next coprocessor test.
9Eh	Amb	Grn	Grn	Red	Enable Interrupts 0, 1, 2: Checking the extended keyboard, keyboard ID, and NUM Lock key next. Issuing the keyboard ID command next.
A2h	Red	Off	Amb	Off	Off Report second set of POST errors to error messenger.
86h	Red	Grn	Grn	Off	Prepare and run setup: Error manager displays and logs POST errors. Waits for user input for certain errors. Execute setup.
8Bh	Amb	Off	Grn	Grn	Set base expansion memory size.
8Ch	Amb	Grn	Off	Off	Adjust setup: Programming the setup options next.
A5h	Red	Grn	Red	Grn	Set display mode.
A7h	Red	Grn	Amb	Grn	OEM patch 12.
					Build SMBIOS table and MP tables.
					Program hot key and timeout settings in keyboard controller.
					Processor initialization before boot.
					Copy required language strings to shadow RAM.
AAh	Amb	Off	Amb	Off	Clear video screen.
000h	Off	Off	Off	Off	One beep to indicate end of POST. No beep if silent boot is enabled.
000h	Off	Off	Off	Off	POST completed. Passing control to INT 19h boot loader next.