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Shogun Diagnostic Codes Reference Guide (Rel 1.8.8)

This document lists the diagnostic codes that your server can produce. Some of these codes indicate errors or malfunctions; others are simply way-markers that indicate normal progress. The codes can appear in the server’s front panel LCD display or on the screen in the System Management Application software.

Some codes described in this guide will seem obscure to less experienced users, particularly those codes which appear on the Front Panel LCD. If you cannot understand the meaning of a code, ask an authorised engineer for help.

Codes that appear on the Front Panel LCD

When you press the Power On button from Standby mode, the server initiates several phases in the boot process. During these phases the system performs the following operations:

Checks the Diagnostic Processor.

Checks the System Management Controller (SMC).

Checks the BIOS, which executes the Power On Self Test (POST).

Loads the Operating System.

Attaches the Device Driver and associated clients.

There is a set of diagnostic codes, expressed as hexadecimal numbers, associated with each phase. If your server fails to complete any of these phases, the system will halt and one of the codes will flash on and off on the front panel LCD display. The code represents the point at which the power-on sequence came to a stop and may indicate what element of the system could be at fault.

The appearance of some codes may require an engineer to deal with the problem. In this case, be sure to do the following:

1. Note down the code to help the engineer diagnose the fault.

2. Clear the LCD (and silence the alarm if it is sounding) by using the key to turn the front drive bay door lock to the Unlock position (door closed). If it is already in the Unlock position, turn it to Lock and then to Unlock again.

Note Power On
Press this button to switch the system on from Standby Mode. The Power LED will light up and the system will initiate its boot sequence. Diagnostic codes, expressed as hexadecimal numbers, will appear as a matter of course on the LCD screen on the Front Panel. What happens after this depends on how your Shogun has been configured, i.e. which operating system or other software may be installed


Power Failure Codes

The LCD will display these codes if the mains electricity supply fails. These codes, shown in brackets below, represent three power failure modes. In each mode, the power supply battery pack powers the system. Each code uses a countdown timer, indicated by nnn, to indicate the number of seconds before its mode expires and the next mode begins. If the countdown begins at 1000 or greater, the LCD will display 999 and hold until the countdown actually reaches 999.

The LCD will display the progress of the countdown from then on.

Brownout (A.nnn) This mode indicates a temporary reduction or even absence of the AC electric power. If it turns out that full power is not restored after approximately five seconds, Brownout will change to Battery Mode. If the battery charge is already low and power consumption is high, the system may skip Battery Mode altogether and jump to Power Fail mode. On the other hand, if power is fully restored before the countdown reaches zero, system function will return to normal and the batteries will recharge.

Battery Mode (b.nnn) This mode results because power has not been restored in Brownout Mode. The system warns users to save their work, terminate their applications and log off the network. System shutdown is initiated in this mode. If power is fully restored before the countdown reaches zero the system will return to normal function and recharge the batteries; otherwise Power Fail mode begins.

Power Fail (F.nnn) In this mode, power has not yet been restored; system shutdown should be in progress to prevent deep battery discharge. Shutdown continues even if power should be restored at this late stage.

 Under normal conditions, the server deals with the power failure itself by means of the Event Manager and, when necessary, initiates system shutdown. You will probably only see the Power Fail code on the LCD if the brownout lasts that long. However, if a brownout occurs and persists when the Event Manager is not loaded, then the LCD will display each of the codes described above. Under these conditions the system is not able to initiate system shutdown. You, or some other person who is local to the server, will need to do it yourself while the system is in Battery Mode. The precise steps you need to take to shut down the system, after instructing network users to close their applications and log off, will depend on the operating system you are using.

When the operating system is at the point where it is safe to switch the machine to Standby, press and hold the Standby (see note below) button on the front panel until the system switches off (see Chapter 2, Operating Your System, in the Owner’s Handbook for more information about switching off). 

After you have instructed all network users to close their applications down and log off the network, hold this button down for a specific period of time before the system initiates a shutdown sequence to Standby Mode. The system will display the code 1200 on the LCD and sound a tone.
Continue to hold down the STANDBY button until the tone stops, at which time the shutdown sequence begins. In Standby Mode, the mains electricity supply keeps the battery pack fully charged, but there is no DC power supplied to the system.
Press STANDBY and CONTROL simultaneously to cancel the current shutdown sequence.
Special Button Functions


System Management Controller (SMC) Error Codes

This section contains SMC error codes. These codes fall into two groups, the range 0F01-0F0F and the range 0F10-0F4F.


These are initialisation codes for the SMC which will only appear immediately after power-up. If the system stops and the LCD flashes one of these codes, it means that there is a serious hardware problem with the SMC board and it probably needs replacing. The following table defines these codes:

Error Code Error Factor
0F01 80C186EB internal H/W (general purpose register) error
0F02 80C186EB internal H/W (flag register) error
0F03 80C186EB internal H/W (timer) error
0F04 SC’s SRAM write/read test error
0F05 SC’s EPROM checksum error
0F06 SC’s FLASH checksum error
0F07 Copy from FLASH to SRAM failed
0F08 Copy from EPROM to SRAM failed
0F09 RTC’s RAM write/read test error
0F0A A/D converter’s busy bit error
0F0B SC’s FLASH is not programmed
0F0D UART1 internal loop test failed
0F0E UART2 internal loop test failed
0F0F UART1 and UART2 internal loop test both failed



These codes indicate various other errors and could appear on the LCD at any point. The following list defines the codes and indicates what action you should take if these errors occur. If an error persists and efforts to solve the problem prove ineffective, you should contact a service engineer.

0F10 Power On Error - This code appears when the firmware does not detect a power-on signal from the Power button within one second. Possible faulty items are the motherboard, the SMC board, the SMIC or the cabling between them. Try pressing the Power button again.

0F11 Power Off Error - Appears when the system will not shut down after pressing the Standby button on the front panel. Possible faulty items are the main circuit board, the SMC board or the cable between them. If it is absolutely necessary to shut down the server, you can switch the circuit breaker switch on the rear panel to the Off position and unplug the mains lead. Only do this, however, as a last resort.

0F12 SMC Watchdog Timer over-flow error - Indicates a faulty SMC board or the SMC firmware. If this code appears, first try resetting the SMC by doing the following:

1. Unlock the removable drive bay door to deactivate the security alarm (see chapter 2 in the Owner’s Handbook).

2. Press the Control, Standby and Reset special buttons simultaneously.

This action displays "8888" on the LCD.

3. Press Standby and Reset simultaneously. This clears the LCD and resets the SMC. If the error code persists, contact a service engineer.

0F13 Too many time-out errors - Indicates faulty SMC board. Try resetting the SMC using the same procedure as for 0F12.

0F15 Invalid interrupt - Indicates a fault in either the SMC board or firmware.

0F20 Diagnostic Processor communication error - Indicates an error in the diagnostic processor on the System Management Interface Card (SMIC), the power distribution board or the cable between them.

0F30 SMC port retry-error occurred - Indicates an error in the SMC board, the SMIC board, the motherboard power distribution board, the cable between them, firmware or the setting of the SMC (or FPSC) variables. First check the settings of the FPSCResponseTimeOut and FPSCReceiptTimeOut variables in the System Management Application (SMA).

0F31 SMC port Response time-out occurred - Same as for 0F30.

0F32 SMC port Transmit time-out occurred - Indicates faulty SMC board or firmware.

0F40 Modem port retry-over occurred - Indicates a faulty modem, modem cable, telephone line, SMC board, settings of SMC (or FPSC) variables in the SMA. You should check the following items first:

1. The modem is connected correctly.

2. The modem is switched on.

3. The modem is connected to the telephone line correctly.

4. The modem works correctly. To double-check this, connect a different modem that you know is in working order.

5. The serial port settings for the modem (e.g. baud rate) are correct.

6. Settings of the MODEMResponseTimeOut and MODEMReceiptTimeOut variables, in the SMA, are correct.

0F41 MODEM port Response time-out - Same as 0F40.

0F42 MODEM port Transmit time-out - Same as 0F40.

0F4D MODEM AT command result code time-out occurred - Indicates faulty modem, modem cable, SMC board or SMC (FPSC) variable settings. You should check the following items first:

1. The modem is connected correctly.

2. The modem is switched on.

3. The modem connection to the telephone is in order.

4. The modem functions properly. To double-check this, connect a different modem that you know is in working order.

5. The serial port settings for the modem (e.g. baud rate) are correct.

6. The settings of the ModemATOriginal, ModemATCommands and MODEMPortBaudRate variables, in the SMA, are correct.

0F4E MODEM AT command failed - Same as 0F4D.

0F4F MODEM AT command unexpected result code is received - Same as 0F4D.


Note Control Standby & Reset
Special Button Functions
Pressing Standby, Control and Reset simultaneously while the front drive bay door is unlocked switches the system into a mode in which these three buttons have special functions. The LCD displays 8888 to indicate this mode.
STANDBY or RESET - Pressing one of these buttons initiates a memory dump to the central processing unit by activating and then deactivating the Non-Maskable Interrupt (NMI) signal via the diagnostic processor. You can then use the appropriate function of the network operating system to examine the contents of the dump.
CONTROL - Pressing this button initialises the modem, which is connected to the SMC serial port on the backplane of the Shogun. If the modem initialisation is successful, the LCD displays the code 0000. If the initialisation is unsuccessful, the LCD displays 0F4D or 0F4E.
STANDBY + RESET - Pressing these buttons simultaneously clears the LCD and then releasing them executes an independent Front Panel System Controller (FPSC) reset. This would only be necessary if a major problem or error had occurred in the system.
If you do not press any buttons for ten seconds, the system returns to normal mode.


Progress Control (NextBootStage) Codes

A single SMC (FPSC) variable, NextBootStage, records the progress of all phases of the boot process. These phases are:

Power-On Self Test (POST), executed by the BIOS.

SMC Device Driver Attachment (i.e. initialisation).

SMC Client Loading.

The SMC Last Client sends a message to the SMC that it has loaded.

The NextBootStage variable can take values in the range 1000-FFFF. The most significant digits of this variable (i.e. the first three) are progress codes and are allocated as follows:

100-1FF Diagnostic Processor and SMC

200-2FF Motherboard BIOS

300-3FF System Management Interface Card (SMIC) BIOS

400-7FF Unallocated

800-8FF Device Driver

900-EFF Unallocated

F00-FFF Last Client


The least significant digit (i.e. the fourth) indicates whether there is an error condition, according to the following scheme:

0 No error

F Used by SMC to indicate an error


The following codes have special meaning to the SMC:

0001 is issued, accompanied by an alarm, under the following circumstances:

- The nickel-cadmium battery on the SMC board has fully discharged. This will happen if the server is disconnected from the mains electricity for at least one month.

- The SMC firmware which controls the Front Panel is updated.

- A fatal error occurs on the SMC and the SMC executes a self-reset. This means that any changes you have made to the configuration settings within the SMA have been lost. Use the SMA to restore these settings (see the SMA User’s Guide and the SMA’s own on-line help system).

2000 must be issued by the BIOS when it starts execution before configuration testing has taken place.

7FF0 is the POST completion code. It is sent by the BIOS when the POST completes successfully. When the code is received, the POST watchdogs are disabled.

8FE0 is the code sent by the SMC Device Driver to indicate that it will be absent.

8FF0 is the code sent by the SMC Device Driver to indicate that it has initialised successfully.

FFE0 is the code sent by the SMC Last Client to indicate that all clients will be unloaded. The Trap generator is disabled.

FFF0 is the code sent by the SMC Last Client to indicate that all clients are now loaded. The Trap generator is enabled.


SMC-specific codes and NextBootStage codes

Code Meaning Source
0000 Reset or Shutdown has been cancelled by S/W. Device drivers or clients
1000 Reset is issued to Diag-Processor SMC
100F POST has not started its execution. (SMC detected time-out) SMC
1200 Shutdown_request is issued to S/W SMC
1400 Normal Reset_request issued to S/W SMC
1600 NMI request is issued to Diag-processor SMC
1800 Dump (INIT) request is issued to Diag-processor SMC
1FFF System dead is reported by Diagnostic processor Diagnostic processor
2000 POST has started its execution POST
2001-2FFF POST indicates the number or error of test being executed POST
7FF0 POST completes its execution POST
8000-FFFF These codes are issued by device driver or clients Device driver or client
8FE0 Device driver is detached Device driver
8FF0 Device driver is attached Device driver
FFE0 Clients are detached Last Client
0000 Clients are attached.

This code also appears when a Reset or Shutdown has been cancelled by S/W.

Last Client

Device drivers or clients


POST beep codes

The BIOS signals a failure with a beep code before video adapter initialisation. The code consists of up to 10 beeps of equal length. The following table explains the meaning of each code:

Number of beeps Meaning
1 Refresh failure
2 Parity can’t be reset
3 First 64k memory failure
4 Timer not operational
5 Processor failure
6 8042 gate a20 is off (v_mode)
7 Exception interrupt error
8 Display memory read/write error
9 ROM checksum error
10 Shutdown register read/write error


POST codes and Countdown codes

After successful video adapter initialisation, the BIOS indicates the current testing phase during POST by outputting a 2-digit hex code to I/O location 80h. The current countdown code will also be displayed on the LCD panel once it is initialised.

The following table contains the port-80 codes and the POST countdown codes (expressed as hexadecimal numbers) which the system displays during the recovery boot process. During this process the floppy disk in drive A: is booted and a BIOS image is automatically installed.

Code Meaning
2020 Disable internal cache
2080 Disable DMA controller #1, #2, disable interrupt controller #1, #2, reset video display
2130 Initialise all chipset registers (enable LCD here)
2150 Initialise system timer
21B0 Real mode base 64k test
2200 16k base RAM test
2230 Setup interrupt vectors
2400 Test memory in virtual mode
2650 Initialise 8237 DMA controller
2670 8259 interrupt controller test
2800 Unmask diskette, keyboard and timer interrupts
2880 Floppy unit initialisation
2A00 Cache enable
2000 Boot operating system


The following table contains the port-80 and countdown codes displayed during the normal BIOS POST process.

Code Meaning
2D00 Returned from ResetInit
2D10 PowerOnInit
2D20 Return from PowerOnInit
2D30 SoftResetEntryPoint
2D40 Test to see if in Protected mode
2D50 Checksum only the LOADER.BIN
2D60 LOADER.BIN checksum good
2D70 Issue BAT command to KBD controller
2D80 After waitForEmptyBuffer
2D90 After Empty8042InputBufferX
2DA0 After Retrieve8042OutputBufferX
2DB0 Keyboard Init passed
2DD0 After initAfterKBCInitEnd
2DF0 2nd Empty8042InputBufferX
2E00 Initialise Master/Slave PICs
2E10 Before ChipsetInitEnd
2E20 After ChipsetInitEnd
2E30 Initialise timer channel 0 for system timer
2E40 Before beginning memory test, need to clear any pending parity errors
2E60 Test RAM from 0-640KB
2E70 GetMinPartitionSizeX
2E80 RAM failure, call RemapMemoryPartitionX
2E90 RAM test complete, passed
2EA0 Set up stack at 30:100
2EB0 BIOS just shadowed
2EC0 Enable F000 DRAM read/write
2ED0 Dispatch POST
2230 Setup interrupt vectors
2240 Just after call to SetPostEnvironment
20D0 CustomCheckManufacturingMode and CheckDefaultJumper
20E0 Check validity of CMOS
20F0 Force CMOS defaults
2100 CMOS init complete
2250 After Initialise CMOS pointers in EBDA
2F00 EISA slot initialisation
2F10 Enable extended NMI sources
2F20 Test extended NMI sources
2280 Set monochrome mode
2290 Set colour display
22A0 Clear parity status if any
22B0 Call ChipsetBeforeVideoInit
22C0 Video option ROM search
22D0 Call CustomAfterVideoInit
22E0 AfterVideoInit
22F0 After mono display setup
2300 Before check for vertical retrace
2310 Test for colour display memory
2320 Check for vertical retrace
2340 Video card detected
2350 Initialise Console Redirection
2360 InitializeMessagingServices and ClearScreen
2370 CustomDisplaySignon
2F30 EISAErrorDisplay
2800 Keyboard/Mouse port check
2810 Keyboard error determination
2820 Enable Keyboard Interrupts and init kbd circular buffer
2830 Check if keyboard is locked
2F50 Initialise mouse
2390 CustomUpdateScreenPointers, CustomDisplaySetupMessage, CustomDisplayKeyboardSignon, CustomDisplayMouseSignon
23B0 Jumps to ‘StartMemoryTesting’ in next module
2430 Call GetMinPartitionSizeX
24F0 Call DisableEnhancedPost
2520 Call ChipsetAdjustMemorySize
2610 DMA register Tests
2620 DMA test OK
2640 DMA controller F/F latch test
2650 Initialise 8237 DMA controller
2660 Clear DMA write request register and mask set/reset register
2670 8259 Interrupt controller test
2F40 Enable extended NMI sources
28C0 Chipset@Devinit and ConfigurePeripheralController
28F0 Floppy init
2910 HD init
2920 Set printer, rs-232 time out
2960 Before Option ROM scan
2970 Option ROM scan C800-E000
2980 After Option ROM scan
29A0 Soft reset (1234) (1200)
29D0 Timer data area initialisation
2A00 Printer setup
2A10 RS-232 setup
2A20 After KB circular buffer set up
2AB0 Before NPX test and init
2AC0 NPX test and init
2AD0 Update coprocessor info in CMOS and recalculate checksum
2AE0 Set typematic rate
2AF0 KBD read ID command
2B00 Wait for READ ID response
2A30 Display POST errors
2A60 Before Setup
2A70 Call Setup
2B10 Enable Cache for boot
2B30 Setup display mode
2B40 Jmp preos.asm
2BB0 Start of PreOS
2000 Execute boot


Codes Generated by the SMIC BIOS

The following table contains codes that the System Management Interface Card (SMIC) BIOS generates during POST. The codes, which can appear on the LCD or within the System Management Application, define the start and end points of each action. The appearance of one of these codes does not indicate an error unless it flashes.

Start Definition End
31 0 0 Boot control decision logic 39 0 0
31 1 0 Console redirect decision logic 39 1 0
32 0 0 Initialise FPSC communications 3A 0 0
32 1 0 Write inventory information 3A 1 0
32 2 0 Enable / Disable CPUs 3A 2 0
32 3 0 Fatal error handler 3A 3 0
33 0 0 Console redirection 3B 0 0
35 0 0 FPSC and pass-through serial port configuration 3D 0 0
35 1 0 Ethernet card node address reporting 3D 1 0
35 2 0 Time synchronisation 3D 2 0
35 3 0 Non-fatal POST errors reporting 3D 3 0
35 4 0 Security 3D 4 0
36 0 0 SMIC SRAM test 3E 0 0
36 1 0 SMIC serial port test 3D 1 0
37 0 0 Flash Disk initialisation 3F 0 0
37 1 0 Flash Disk boot 3F 1 0
37 2 0 Flash Disk self-test 3F 2 0


Codes that appear in the SMA

POST error codes and messages

The BIOS indicates errors by writing an error code to the PS/2 standard logging area in the Extended BIOS Data Area, and by displaying a message on the screen, which is preceded by the POST Error Code. The error code will also be logged to the Critical Event Logging area. The following codes will appear inside the System Management Application (SMA) and not on the front panel LCD.

Code Error Message
0002 Primary Boot Device Not Found
0010 Cache Memory Failure, Do Not Enable Cache
0015 Primary Output Device Not Found
0016 Primary Input device Not Found
0041 EISA ID Mismatch for Slot
0043 EISA Invalid configuration for Slot
0044 EISA config NOT ASSURED!
0045 EISA Expansion Board Not Ready in Slot
0047 EISA CMOS Configuration Not Set
0048 EISA CMOS Checksum Failure
0049 EISA NVRAM Invalid
0060 Keyboard Is Locked ... Please Unlock It
0070 CMOS Time & Date Not Set
0080 Option ROM has bad checksum
0083 Shadow of PCI ROM Failed
0084 Shadow of EISA ROM Failed
0085 Shadow of ISA ROM Failed
0131 Floppy Drive A:
0132 Floppy Drive B:
0135 Floppy Disk Controller Failure
0140 Shadow of System BIOS Failed
0170 Disabled CPU slot #
0171 CPU Failure - Slot 1, CPU #1
0172 CPU Failure - Slot 1, CPU #2
0173 CPU Failure - Slot 2, CPU #1
0174 CPU Failure - Slot 2, CPU #2
0171 Previous CPU Failure - Slot 1, CPU #1
0172 Previous CPU Failure - Slot 1, CPU #2
0173 Previous CPU Failure - Slot 2, CPU #1
0174 Previous CPU Failure - Slot 2, CPU #2
0175 CPU modules are incompatible
0180 Attempting to boot with failed CPU
0191 CMOS Battery Failed
0195 CMOS System Options Not Set
0198 CMOS Checksum Invalid
0289 System Memory Size Mismatch
0295 Address Line Short Detected
0297 Memory Size Decreased
0299 ECC ErrorCorrection Failure
0301 ECC Single bit correction failed, Correction disabled
0302 ECC Double Bit Error
0310 ECC Address Failure, Partition #
0370 Keyboard Controller Error
0373 Keyboard Stuck Key Detected
0375 Keyboard and Mouse Swapped
0380 ECC SIMM failure, Board in slot 1 SIMM #
0392 ECC SIMM failure, Board in slot 2 SIMM #
0430 Timer Channel 2 Failure
0440 Gate-A20 Failure
0441 Unexpected Interrupt in Protected Mode
0445 Master Interrupt Controller Error
0446 Slave Interrupt Controller Error
0450 Master DMA Controller Error
0451 Slave DMA Controller Error
0452 DMA Controller Error
0460 Fail-safe Timer NMI Failure
0461 Software Port NMI Failure
0465 Bus Timeout NMI in Slot
0467 Expansion Board NMI in slot
0501 PCI System Error
0510 PCI Parity Error
0710 System Board Device Resource Conflict
0711 Static Device Resource Conflict
0800 PCI I/O Port Conflict
0801 PCI Memory Conflict
0802 PCI IRQ Conflict
0803 PCI Error Log is Full
0810 Floppy Disk Controller Resource Conflict
0811 Primary IDE Controller Resource Conflict
0812 Secondary IDE Controller Resource Conflict
0815 Parallel Port Resource Conflict
0816 Serial Port 1 Resource Conflict
0817 Serial Port 1 Resource Conflict
0820 Expansion Board Disabled in Slot
0900 NVRAM Checksum Error, NVRAM Cleared
0903 NVRAM Data Invalid, NVRAM Cleared
0905 NVRAM Cleared By Jumper
0982 I/O Expansion Board NMI in Slot
0984 Expansion Board Disabled in Slot
0985 Fail-safe Timer NMI
0986 System Reset Caused by Watchdog Timer
0987 Bus Timeout NMI in Slot



Computing for a Connected World