CT scanners · CT PRO SPEED family

GE Healthcare CT Pace: troubleshooting and error codes

The ServiceForge knowledge base holds 79 documented symptoms for the GE Healthcare CT Pace, with 120 ranked causes, 89 diagnostic checks with test points and expected values, and 491 error codes. Each symptom below shows its causes and the first check; the rest is one connection away. Connect ServiceForge to your AI

Symptoms

XG system failure detected high voltage

XG FAIL LED (D1) is off, indicating one or more failures in the X-ray generator system

Ranked causes

1. Over KV condition (unknown)
2. Under KV condition (unknown)
3. Over MA condition (unknown)
4. Filament overcurrent detected (unknown)
5. Power supply failure (unknown)
6. X-ray tube overheat (unknown)
7. Rotor overcurrent (unknown)
8. Loose connector connection (unknown)

8 corrective actions and part numbers are in ServiceForge. Connect ServiceForge to your AI

Gantry rotation initialization failure high voltage

Gantry does not rotate properly or stop at expected positions during power-on initialization

Ranked causes

1. Manual/System switch not in correct position (common)
2. Gantry not rotating in correct direction or getting stuck (occasional)
3. Azimuth position counter not initializing from G.PULSE (occasional)
4. Gantry azimuth position not in CCW rest area after initialization (occasional)

First check

Check manual switch position on TGP

Test point: TGP manual switch
Expected: Switch in SYS or MNL position as required

2 more checks with pass and fail actions, 4 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Motor does not rotate caution

Gantry motor fails to spin when voltage command is present

Ranked causes

1. No voltage command to servo amp (common)
2. RSGO signal not present (common)
3. Fuse failure in servo amp (occasional)
4. Servo amp failure (rare)

First check

Voltage command signal present

Test point: CN1, pins 3-4
Expected: 6 V / 1,000 rpm
Tools: Multimeter (DMM)

2 more checks with pass and fail actions, 4 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

System does not complete power-up sequence caution

LEDs on processor boards (FMP1, DMP, SMP) halt at a status code instead of progressing to 90H (system ready)

Ranked causes

1. Hardware test failure on FMP1, SMP, or DMP board (common)
2. DIP switch not configured correctly for P-On tests (common)
3. Hardware not installed or not in correct slot (occasional)
4. Hard disk or disk controller malfunction (occasional)

First check

Observe LED status on processor boards during power-up

Test point: 8 LEDs on FMP1, SMP, DMP boards
Expected: LEDs should progress through sequence 01H, 11H-1CH (SMP test), 20H-28H (SMC test), 30H-39H (FPU tests), 40H-4DH (FPU tests), 50H-55H (FMP COM test), 60H (initial boot), 70H (wait OS), 80H (OS start), 8FH-90H (application load)

3 more checks with pass and fail actions, 5 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

14 adjacent channels with 42 channels periodic fail

Periodic band-shaped artifacts appear on image; bands may be localized or span entire image

Ranked causes

1. CAM CONT. Board failure (common)
2. Output Mux. switch of CAM Board failure (common)
3. ADC module failure (common)

Display Processor OVL board test error

LED displays hex status codes 20-2C during overlay board test phase

Ranked causes

1. OVL board defective (common)
2. CBRD board defective or not generating clock pulse (occasional)
3. Defective cable between FILE and DISP nest (occasional)

First check

Verify OVL board test status

Test point: OVL Board
Expected: Hardware test passes

3 corrective actions and part numbers are in ServiceForge. Connect ServiceForge to your AI

File Processor fails during system initialization

LED displays hex status code 80-83 during INIT routine; system stops with exception or error

Ranked causes

1. OS file corrupted or broken (common)
2. Memory board failure (common)
3. Memory allocation error (occasional)

First check

Verify BOOT diskette availability

Test point: Boot drive
Expected: BOOT diskette can boot system

1 more check with pass and fail actions, 3 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Gantry processor error condition

ERRA LED on TGP board lights, indicating RAM check error, ROM check error, or gantry azimuth initialize error in gantry processor system

Ranked causes

1. RAM check error (unknown)
2. ROM check error (unknown)
3. Gantry azimuth initialize error (unknown)

Scan Processor DMA access error

LED displays hex status codes 50-55; DMA access error or system bus access problem

Ranked causes

1. SMP board system bus access error (common)
2. Bus request level setting jumper misconfigured on SMP (occasional)
3. Daisy chain jumper misconfigured on FILE backplane (occasional)

First check

Verify bus request level setting jumper

Test point: SMP Board jumper
Expected: Correct jumper position for system configuration

1 more check with pass and fail actions, 3 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Scan Processor FCP communication error

LED displays hex status codes 32-38 during command write, status read or interrupt reception

Ranked causes

1. FCP2 board defective or board number select switch misconfigured (common)
2. SMP board defective interrupt receive function (occasional)
3. Defective cable between FILE and RECON nest (occasional)

First check

Verify FCP2 board number select switch

Test point: FCP2 Board select switch
Expected: Switch set correctly for board configuration

3 corrective actions and part numbers are in ServiceForge. Connect ServiceForge to your AI

Scan Processor SMC board test error

LED displays hex status codes 20-28 during SMC board hardware test phase

Ranked causes

1. SMC board defective (common)
2. CBRD board defective or not generating clock pulse (occasional)
3. Defective cable between FILE and RECON nest (occasional)

First check

Verify SMC board test status

Test point: SMC Board
Expected: Hardware test passes

3 corrective actions and part numbers are in ServiceForge. Connect ServiceForge to your AI

Single channel fail

Single detector channel or input capacitor fails, causing ring artifact or streak on image

Ranked causes

1. Single input capacitor failure (common)
2. Single detector channel failure (common)
3. Single channel data drop during conversion or transfer (occasional)

First check

Measure distance from image center to streak using circle cursor

Test point: image center to streak
Expected: distance value to identify DAS channel from Ring Radius Chart

Table processor error condition

ERRB LED on TGP board lights, indicating RAM check error, ROM check error, or serial communication error in table processor system

Ranked causes

1. RAM check error (unknown)
2. ROM check error (unknown)
3. OCINTFC to table processor serial communication error (unknown)

Warm up error during initialization radiation

System performs warm-up routine (6 tube warm-up exposures plus 7th stationary scan for data collection). If collected raw data is insufficient or fails analysis, system generates 'WARM UP ERROR' message and halts.

Ranked causes

1. Insufficient raw data collected during 7th scan (common)
2. X-ray tube not functioning properly (occasional)
3. Detector malfunction or misalignment (occasional)

First check

Verify 4 exposures at 120 kV 30 mA complete without error

Test point: System display and error log
Expected: No error message, exposures logged

3 more checks with pass and fail actions, 3 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Disk formatting required after controller failure or power loss

Hard disk needs formatting due to defective disk controller (FMP2) or sudden power shutdown; procedure also identifies disk-related troubles

Ranked causes

1. Defective disk controller (FMP2) (occasional)
2. Sudden power shutdown during operation (occasional)

First check

Set Boot select switch S2 and S4 to ON position

Test point: Boot select SW on FMP1
Expected: Both S2 and S4 ON

9 more checks with pass and fail actions, 2 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

File Processor fails to allocate memory area

LED displays hex status code 83; error during memory allocation phase of INIT

Ranked causes

1. Incorrect memory size specification (occasional)
2. OS file corrupted or broken (common)

First check

Verify specified memory size

Test point: System configuration
Expected: Memory size matches system requirement

2 corrective actions and part numbers are in ServiceForge. Connect ServiceForge to your AI

Hard disk seek operation failure during power-up caution

FMP2 test halts indicating hard disk cannot seek to cylinders or read track 0

Ranked causes

1. Hard disk not ready, disconnected, or read/write head failure (common)
2. Hard disk controller (HDC) malfunction (occasional)

First check

Verify hard disk ready status

Test point: HDC status register via FMP2
Expected: Disk ready signal asserted; LED status progresses through HD tests

3 more checks with pass and fail actions, 2 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Power-up self-test failure

System indicates power-up test failure via LED status code on processor board during startup sequence

Ranked causes

1. Hardware test phase error (common)
2. Boot-up phase error (occasional)

First check

Observe LED status on FMP1, SMP, or DMP processor board

Test point: LED indicators on processor board
Expected: Green/normal condition (no error LED)

1 more check with pass and fail actions are in ServiceForge. Connect ServiceForge to your AI

Tube overheating or oil overpressure detected caution

OH LED on Power Cont board is lit, indicating tube thermal or pressure alarm

Ranked causes

1. Tube overtemperature (common)
2. Tube oil overpressure (occasional)

First check

Check OH LED status on Power Cont board

Test point: OH LED
Expected: LED OFF

1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI

14 adjacent channels fail

Band-shaped ring artifact appears on image across 14 contiguous channels

Ranked causes

1. Conditioning circuit failure (common)

168 channels fail

Complete CAM Board failure causing loss of all 168 channels from one board, ring artifact across entire detector

Ranked causes

1. CAM Board Bias Voltage failure (common)

7 adjacent channels fail

Band-shaped artifact spanning 7 contiguous channels in image

Ranked causes

1. CAM input Mux. chip failure (common)

AC mains power failure caution

ACLN LED on Power Cont board is lit, indicating AC power supply input has failed

Ranked causes

1. AC mains power loss or disconnection (occasional)

First check

Verify ACLN LED status

Test point: ACLN LED
Expected: LED OFF

1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI

Calibration: System warm-up and calibration file correction radiation

Routine to warm up X-ray tube and update system calibration data by comparing current warm-up data with previous reference. Required after software load, generator calibration, detector replacement, or system recalibration.

Ranked causes

1. Calibration correction required (common)

First check

Perform tube warm-up: 4 exposures at 120 kV 30 mA

Test point: X-ray tube operating parameters
Expected: Tube reaches operating temperature, exposures logged

5 more checks with pass and fail actions, 1 corrective action, and part numbers are in ServiceForge. Connect ServiceForge to your AI

CCW rest position check error during initialization high voltage

ERRA LED on when gantry does not stop at correct CCW rest position

Ranked causes

1. Position sensor error or gantry mechanical misalignment (occasional)

1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI

Communication sequence abnormal

LED 0 on OC INTFC (Slot #52) is not blinking or blinking abnormally

Ranked causes

1. Communication interface malfunction or module not responding (unknown)

First check

Verify LED 0 blinking pattern on OC INTFC during normal operation

Test point: OC INTFC Slot #52, LED 0
Expected: Blinking continuously during communication

1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI

Control circuit power supply failure caution

CTLPS LED on Power Cont board is lit, indicating control power supply fault

Ranked causes

1. Control power supply malfunction (occasional)

First check

Verify CTLPS LED status

Test point: CTLPS LED
Expected: LED OFF

CRT display does not show proper response

System unresponsive on display output during File Processor system setup phase

Ranked causes

1. Program looping or CPU halt on File Processor (common)

First check

Check HALT LED on FMP1 board

Test point: FMP1 Board HALT LED
Expected: LED is off

1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI

Disk contains unregistered bad sectors after validation

During disk validation, bad sectors are detected that were not on the original media defect list and must be added to the Lock Out Table (LOT)

Ranked causes

1. Bad sectors developed after initial manufacturing (rare)

First check

Check validation output for bad sector errors

Test point: Console display during validation phase
Expected: No errors or identified READ ERROR at specific PSN values

1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI

Display check pattern failure

Display or gantry panel switches do not show proper LED test patterns during initialization

Ranked causes

1. Display LED or panel switch malfunction (occasional)

First check

Observe gantry display LED patterns during display check

Test point: Gantry display LEDs D1-D8 and panel switches
Expected: LEDs illuminate per pattern 0-11 and switches respond to manual input

1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI

Display Processor hardware test error

LED displays hex status codes 10-1C during DMP hardware test phase

Ranked causes

1. DMP board defective (common)

First check

Verify DMP hardware test completion

Test point: DMP Board
Expected: Hardware test passes

1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI

Display Processor post-processing error after hardware test

LED displays hex status code 5C; error occurs during post-processing verification phase

Ranked causes

1. Intermittent hardware fault or test anomaly (rare)

First check

Verify error repeatability

Test point: System startup sequence
Expected: Error does not reoccur on restart

1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI

Display Processor shows no date/time entry display

CRT display fails to show date/time entry screen during Display Processor system setup

Ranked causes

1. Display Processor halt or chain line connection fault (common)

First check

Check HALT LED on DMP board

Test point: DMP Board HALT LED
Expected: LED is off

1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI

DMP board not responding during power-up communication caution

LED status halts at 47H during DMP self-test indicating DMP command/response failure

Ranked causes

1. DMP board communication failure or not installed (common)

First check

Verify DMP board presence in slot 25

Test point: Backplane slot 25
Expected: DMP board installed and seated properly

1 more check with pass and fail actions, 1 corrective action, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Exposure excess time detected caution

T0 LED on Power Cont board is lit, indicating HV on time has exceeded 30 seconds

Ranked causes

1. High voltage on time exceeds 30 seconds (unknown)

First check

Monitor T0 LED during HV operation

Test point: T0 LED
Expected: LED OFF during normal exposures

Filament circuit active at high current high voltage

FIL LED on Power Cont board is lit, indicating main HV P/S contact ON and filament current exceeds 2 Amps

Ranked causes

1. Filament current elevated above 2 Amps (unknown)

First check

Measure filament circuit current

Test point: Filament power circuit
Expected: less than 2 Amps

Filament overcurrent detected high voltage

FIL OC LED on Power Cont board is lit, indicating filament circuit overcurrent

Ranked causes

1. Filament circuit overcurrent (occasional)

First check

Monitor FIL OC LED during operation

Test point: FIL OC LED
Expected: LED OFF

1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI

Filament power supply running high voltage

FIL RUN LED on Power Cont board indicates filament supply is actively operating

Ranked causes

1. Filament supply circuit active (common)

First check

Verify FIL RUN LED status

Test point: FIL RUN LED
Expected: LED ON when filament active

File Processor bus error during memory clearing

LED displays hex status code 81; system stops with bus error exception during INIT

Ranked causes

1. Memory board defective or bus connection failed (common)

First check

Check error information at memory address

Test point: A00H
Expected: Bus error exception data present

1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI

File Processor contradiction detected in software

LED displays hex status code 82; software inconsistency detected during INIT routine

Ranked causes

1. OS file corrupted or read error occurred (common)

First check

Verify BOOT diskette and disk initialization

Test point: Boot drive and disk
Expected: BOOT diskette available; disk successfully initialized

1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI

FMP1 internal RAM error during power-up caution

LED status halts at 13H during FMP1 power-up self-test indicating RAM failure

Ranked causes

1. 512 k static RAM failure or addressing error (occasional)

First check

Observe LED status during FMP1 RAM test

Test point: LEDs on FMP1 board
Expected: Progress from 12H (Bus Error Check) to 14H (PTM Operation Check); if halts at 13H, RAM failure

1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI

FMP1 ROM checksum error during power-up caution

LED status halts at 11H during FMP1 power-up self-test indicating ROM error

Ranked causes

1. 128 kW EPROM checksum mismatch or corrupted ROM (rare)

First check

Observe LED status during FMP1 test

Test point: LEDs on FMP1 board
Expected: Progress from 01H to 11H without halting; if halts at 11H, ROM error indicated

1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI

G.PULSE not detected during CCW rotation high voltage

ERRA LED on when G.PULSE signal not detected during rotation to CCW rest position

Ranked causes

1. G.PULSE sensor malfunction or cable disconnection (occasional)

1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI

Gantry did not reach home position within timeout high voltage

ERRA LED on when gantry does not reach 0 degrees home position within 10 seconds

Ranked causes

1. Motor speed too slow or home position sensor malfunction (occasional)

1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI

Gantry limit position or cable check switch error high voltage

ERRA and GLIMT LEDs on during gantry initialization

Ranked causes

1. Limit position switch malfunction or cable error (occasional)

1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI

Gantry not rotating during initialization high voltage

ERRA LED on but gantry remains stationary

Ranked causes

1. Motor stalled or drive circuit failure (occasional)

1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI

Gantry over speed condition during initialization high voltage

ERRA LED on during rotation indicating excessive speed

Ranked causes

1. Motor speed control circuit malfunction (occasional)

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Gantry Processor RAM check failure

LEDs show ERRA, LOOPA, REQA and MNLA all ON during power-on or reset

Ranked causes

1. Gantry Processor internal RAM or external RAM failure (rare)

First check

Observe LED status during power-on self-test

Test point: ERRA, LOOPA, REQA, MNLA LEDs
Expected: LOOPA LED blinking indicates RAM check passed; all four LEDs on indicates failure

1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI

Gantry Processor ROM check failure

LEDs show ERRA, REQA and MNLA ON during power-on or reset after RAM test passes

Ranked causes

1. Gantry Processor ROM sum check failure (rare)

First check

Observe LED status during ROM sum check phase

Test point: ERRA, REQA, MNLA LEDs
Expected: LOOPA LED blinking indicates ROM check passed; three LEDs on indicates failure

1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI

High voltage fuse F1 or F2 open high voltage

FUSE LED on Power Cont board is lit, indicating one of the main HV fuses has failed

Ranked causes

1. Fuse F1 or F2 open circuit (occasional)

First check

Verify FUSE LED status

Test point: FUSE LED
Expected: LED OFF

1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI

High voltage generator running normally high voltage

HV RUN LED on Power Cont board indicates high voltage generator is operating at specified parameters

Ranked causes

1. HV generator circuit active (common)

First check

Check HV RUN LED status

Test point: HV RUN LED
Expected: LED ON during HV operation

High voltage output enabled high voltage

HV ON LED on Power Cont board is lit, indicating high voltage is actively generated

Ranked causes

1. HV output active (common)

First check

Verify HV ON LED status

Test point: HV ON LED
Expected: LED ON during X-ray operation

High Voltage Power Supply failure indicated high voltage

HVPS LED on Power Cont board is lit, indicating HV power supply malfunction

Ranked causes

1. HVPS circuit malfunction (unknown)

First check

Verify HVPS LED status on Power Cont board

Test point: HVPS LED
Expected: LED OFF

HV generator inverter module overtemperature caution

TEMP LED on Power Cont board is lit, indicating inverter module thermal fault

Ranked causes

1. Inverter module temperature exceeds limit (occasional)

First check

Monitor TEMP LED during operation

Test point: TEMP LED
Expected: LED OFF

1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI

HV generator overcurrent detected high voltage

OC LED on Power Cont board is lit, indicating high voltage circuit overcurrent condition

Ranked causes

1. Overcurrent in HV circuit (occasional)

First check

Verify OC LED status

Test point: OC LED
Expected: LED OFF

1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI

HV generator overvoltage detected high voltage

OV LED on Power Cont board is lit, indicating high voltage output exceeds safe limits

Ranked causes

1. HV output voltage exceeds specification (rare)

First check

Verify OV LED status

Test point: OV LED
Expected: LED OFF

1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI

Input voltage low

Gantry servo amp 7-segment LED displays V.E indicating input voltage below 85% of normal voltage

Ranked causes

1. Input voltage below 85% of normal voltage (unknown)

Microprocessor signal present

µP LED on Power Cont board is lit, indicating signal from microprocessor on FIL CUR CONT ASSY

Ranked causes

1. Microprocessor communication active (common)

Motor overspeed detected

Gantry servo amp 7-segment LED displays S.E indicating motor overspeed at 120% of maximum speed

Ranked causes

1. Motor running at 120% of maximum speed (unknown)

RAM check error at power-on

LED 3 on OC INTFC (Slot #52) is lit during power-up self-test

Ranked causes

1. RAM memory failure or corruption (unknown)

First check

Observe LED 3 on OC INTFC module during power-on

Test point: OC INTFC Slot #52, LED 3
Expected: Extinguished (normally off); lit indicates RAM check error

1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI

More symptoms

Read microprocessor error message on FIL CUR CONT
ROM checksum error at power-on
Rotor speed at selected operation speed
Scan Processor abnormal OS or memory corruption
Scan Processor hardware test error
Servo alarm during gantry initialization
Servo amp circuit breaker tripped
Servo amp commutation error
Servo amp dynamic brake function failed
Servo amp over current
Servo amp over load
Servo amp over temperature
SMP board not responding during power-up communication
System boot fails with program looping or halt
System in manual mode
Table Processor RAM check failure
Table Processor ROM check failure
X-ray generator aborted by overcurrent
X-ray generator power on

19 more symptoms with ranked causes and checks are in ServiceForge. Connect ServiceForge to your AI

Error codes

Code	Meaning	Trigger	Severity
`01`	Hardware Test program missing from ROM	During power-on self-test initialization	error
`08010003`	NONEXISTENT TARGET TASK	OS attempts to operate on task that does not exist	critical
`08010005`	SEGMENT TABLE FULL	Operating system segment table reaches maximum capacity	critical
`08010006`	DUPLICATE SEGMENT NAME	OS detects duplicate segment name in memory allocation table	critical
`08010008`	INSUFFICIENT MEMORY	Operating system cannot allocate requested memory	critical
`0801000A`	NON–DORMANT TARGET TASK	OS attempted operation on task that is not in dormant state	error
`0801000B`	LOGICAL ADDRESS CONFLICT	Logical address mapping has conflicting or invalid entries	critical
`08020003`	NONEXISTENT TARGET TASK	Operation references task that does not exist in system	critical
`08020007`	NONEXISTENT SEGMENT NAME	Reference to segment name that does not exist in system	error
`0802000A`	NON–DORMANT TARGET TASK	Operation requires dormant task but task is active	error
`08040005`	SEGMENT TABLE FULL	Segment table capacity exceeded	critical
`08040006`	DUPLICATE SEGMENT NAME	Duplicate segment name found during allocation	critical
`08040007`	NONEXISTENT SEGMENT NAME	Requested segment name not found	error
`0804000B`	LOGICAL ADDRESS CONFLICT	Address mapping contains conflicting entries	critical
`08060003`	SOURCE TASK NOT FOUND	Inter-task message or operation specifies source task that does not exist	error
`08060007`	DESTINATION TASK NOT FOUND	Inter-task message specifies destination task that does not exist	error
`08060009`	USER TO SYSTEM TASK NOT ALLOWED	User task attempts forbidden operation on system task	error
`0806000B`	ADDRESSES DIFFERENT EVEN/ODD BOUNDARY	Memory addresses are not aligned to even/odd boundary as required	error
`08090003`	TARGET TASK NOT FOUND	Operation targets task that does not exist	error
`080B0006`	DUPLICATE TASK NAME	Two tasks have the same name during creation	critical
`080B0008`	INSUFFICIENT MEMORY	Cannot allocate memory for task creation	critical
`080D0003`	TASK DOES NOT EXIST	Task reference points to non-existent task	error
`080D000A`	TASK NOT DORMANT	Operation on task that is not in dormant state	error
`080D0023`	TASK DOES NOT EXIST	Task lookup fails because task not found	error
`08100003`	TARGET TASK DOES NOT EXIST	Termination target task not found	error
`08100006`	TARGET TASK ALREADY IN TERMINATION	Task termination attempted but task already terminating	warning
`08100009`	USER TASK CAN NOT TERMINATE SYSTEM TASK OR SELF	User privilege task attempts to terminate system task or itself	error
`08100023`	TARGET TASK DOES NOT EXIST	Task termination references non-existent task	error
`08170003`	TARGET TASK DOES NOT EXIST	Task suspension target not found	error
`0817000A`	TASK IS TERMINATING	Task suspension attempted on task that is terminating	warning
`08170023`	TARGET TASK DOES NOT EXIST	Task suspension references invalid task	error
`08190003`	TARGET TASK DOES NOT EXIST	Task stop operation targets non-existent task	error
`08190006`	TARGET TASK ALREADY STOPPED	Task stop attempted but task already stopped	warning
`08190009`	USER TASK CAN NOT STOP SYSTEM TASK	User task attempts to stop system task	error
`08190023`	TARGET TASK DOES NOT EXIST	Stop command references task not found	error
`083A0001`	UNDEFINED XI/O	Undefined extended I/O operation code encountered	error
`083A0002`	UNIMPLEMENTED I/O	I/O operation is not implemented in current system configuration	error
`083A0003`	TASK NOT–EXISTED	I/O operation references task that does not exist	error
`083A0008`	UNDEFINED I/O	OS-level input/output operation on undefined resource	error
`083A0009`	MULTIPLE ASSIGN	Attempt to assign same resource to multiple tasks	error
`083AFF81`	CLOSE ERROR	Failure to close device or file properly	error
`083AFF82`	ALLOCATE ERROR	Failure to allocate system resources	error
`08UUYYZZ`	Trap 1 ERROR	FPU Trap 1 exception occurred	error
`1000000C`	INSUFFICIENT SYSTEM SPACE	Disk or memory capacity exceeded	error
`10000020`	CFMS CPU TIME OUT	CFMS CPU operation exceeded time limit	error
`10000021`	CFMS CPU FAIL	CFMS CPU failure detected	critical
`10000022`	CFMS LU SPACE FULL	CFMS logical unit storage space exceeded	error
`10000082`	INVALID FUNCTION	Unrecognized or unsupported function called	error
`10000083`	INVALID LOGICAL UNIT	Reference to non-existent logical device unit	error
`10000084`	INVALID DATA BUFFER	Invalid memory buffer address or size	error
`10000085`	INVALID RANDOM RECORD	Attempt to access non-existent record in random access file	error
`10000086`	INVALID PARAM BLOCK ADDRESS	Parameter block pointer is invalid	error
`10000087`	PROTECT CODE ERROR	Violation of file or data protection settings	warning
`10000088`	INVALID BLOCK LENGTH	Magnetic tape block size invalid	error
`10000091`	TAPE MIS–MATCH (800/1600 BPI)	Tape density mismatch	error
`10000092`	FILE NOT FOUND (MT)	Requested file not found on tape	warning
`10000093`	REJECTED BY MT	Tape drive rejected operation	error
`10000094`	DATA SHORT 0 (MT BLOCK READ)	Tape block read returned incomplete data	error
`10000095`	LOST DATA 0	Data loss during tape operation	critical
`10000096`	ERROR CORRECTED (MT WRITE)	Error detected and corrected during tape write	warning
`10000097`	I/O ERROR (MT DIRECTIVE)	I/O error in tape directive command	error
`10000098`	I/O ERROR (MT PACKET)	I/O error in tape packet operation	error
`10000099`	INCONSISTENCY OF WRITING TYPE (MT)	Tape write format inconsistency detected	error
`1000009A`	FILE MARK ERROR (MT)	Tape file mark error detected	error
`100000A0`	INVALID COMMAND	Invalid optical disk command	error
`100000A1`	PBN NOT FOUND	Physical block number not found on disk	error
`100000A2`	UNWRITTEN (READ)	Attempt to read unwritten sector	warning
`100000A3`	DELETED (READ)	Attempt to read deleted sector	warning
`100000A4`	OVER WRITE (WRITE)	Attempt to write to already allocated sector	warning
`100000A5`	ALTERNATE TRACK FULL (WRITE)	Alternate track space exhausted	error
`100000A7`	DON'T SEARCH UNWRITTEN	Search operation encountered unwritten sector	warning
`100000A8`	BUS ERROR	I/O bus communication error	error
`100000A9`	BUS TIME OUT	I/O bus operation timeout	error
`100000AA`	DVC TIME OUT	Device operation timeout	error
`100000AB`	GPIB COMMUNICATION ERROR	GPIB interface communication failure	error
`100000AC`	DISK PARMANENT ERROR (READ)	Permanent disk error on read operation	critical
`100000AD`	DISK PARMANENT ERROR (WRITE)	Permanent disk error on write operation	critical
`100000AE`	DRIVE ERROR	Disk drive hardware error	error
`100000AF`	ODC ERROR	Optical disk controller error	error
`100000C1`	BUFFER OVERFLOW	Data exceeds buffer capacity	error
`100000C2`	END OF FILE	Attempt to read past end of file	info
`100000C3`	END OF VOLUME	Attempt to write past end of storage volume	error
`100000C4`	INVALID OR EMPTY FAB	File access block (FAB) is invalid or uninitialized	error
`100000C5`	INVALID TRANSFER FOR DEVICE	Unsupported data transfer operation for device type	error
`100000C6`	BREAK CONDITION	I/O operation interrupted	warning
`100000C7`	INTERNAL IO ERROR	Internal I/O subsystem failure	error
`100000C8`	FAB/DATA BLOCK CONFLICT	File access block and data block mismatch	error
`100000C9`	RECORD DOES NOT EXIST	Attempt to access non-existent record	warning
`100000CA`	RECORD ALREADY EXISTS	Attempt to create duplicate record	warning
`100000CB`	RECORD OVERFLOW/TOO MANY RECORDS IN DATA BLOCK	Data block capacity exceeded	error
`100000CC`	KEY ERROR, FAB KEY CONFLICT	Key field conflict or duplicate key	error
`100000CD`	DISK SPACE FULL	No available disk space for operation	error
`100000D1`	UNRECOVERABLE DEVICE ERROR	Hardware device failure during operation	critical
`100000D2`	DATA COMPARE ERROR	Read data does not match written data	error
`100000D3`	SECTOR PROTECT ERROR	Attempt to write to protected sector	warning
`100000E1`	DEVICE NOT READY	Device is offline or not responding	error
`100000E2`	DEVICE BUSY	Device is busy with another operation	warning
`100000E3`	DATA CRC ERROR	Cyclic redundancy check fails on read	error
`100000E4`	WRITE PROTECTED DEVICE	Attempt to write to write-protected device	warning
`100000E5`	DELETED DATA MARK DETECTED	Read operation encounters deleted data marker	warning
`100000E6`	TIMEOUT	Device operation did not complete within time limit	error
`100000E7`	INVALID SECTOR ADDRESS	Sector address is out of range or invalid	error
`100000E8`	CHECKSUM ERROR	Data checksum validation fails	error
`100000E9`	DISK RESTORE ERROR	Disk recovery or restore operation fails	error
`100000EA`	DATA OVERRUN	Data received faster than device can process	error
`100000EB`	DEVICE STATUS CHANGED	Device status changed during operation	warning
`100000EC`	TRACK/SECTOR ID NOT FOUND	Disk controller cannot find track or sector ID	error
`100000ED`	ADDRESS MARK CRC ERROR	Address mark CRC validation fails	error
`100000EF`	BAD SECTOR	Disk sector marked as bad or unreadable	error
`100000F1`	CHANNEL BUSY	I/O channel is busy with another operation	warning
`100000F2`	CHANNEL DMA ERROR	Direct memory access channel error	error
`100000F3`	CHANNEL UNRECOVERABLE CHANNEL ERROR	Channel suffered unrecoverable error	critical
`100000F4`	CONTROLLER ERROR	Device controller malfunction	error
`100000F5`	DEVICE CONFIGURATION ERROR	Device not properly configured	error
`100000F6`	DMA BUS ERROR	DMA bus addressing error	error
`100000F7`	DMA MAPPING ERROR	DMA address mapping fails	error
`100000F8`	DMA CONTROLLER ERROR	DMA controller malfunction	error
`10–1C`	Scan Processor main data memory error	Error during hardware test of FPU main data memory on SMP local bus	error
`10–1C (Display)`	Display Processor main data memory error	Error during hardware test of FPU main data memory on DMP local bus	error
`10UUYYZZ`	Trap 2 ERROR	FPU Trap 2 exception occurred	error
`11-1B`	Error during FMP1 Board test	Hardware Test phase testing FMP1 Board	error
`18000002`	INVALID COMMAND	FHS received invalid command	error
`18000003`	INVALID LOGICAL UNIT	FHS reference to non-existent logical unit	error
`18000004`	INVALID OR NONEXISTENT VOLUME	FHS volume not found or invalid	error
`18000005`	DUPLICATE FILE NAME	Attempt to create file with existing name	warning
`18000006`	FILE DESCRIPTOR ERROR	File descriptor is invalid or corrupted	error
`18000007`	PROTECT CODE ERROR	File protection violation	warning
`18000008`	RECORD LENGTH ERROR	Record length exceeds maximum or is invalid	error
`18000009`	SHARED SEGMENT ERROR	Error in shared memory segment access	error
`1800000A`	INSUFFICIENT DIRECTORY SPACE	Directory storage full	error
`1800000B`	ACCESS PERMISSION ERROR	User lacks access permission	warning
`1800000C`	INSUFFICIENT SYSTEM SPACE	Overall system storage space exceeded	error
`1800000D`	ASSIGNMENT ERROR	Resource assignment error in FHS	error
`1800000E`	INVALID DEVICE DEVICE TYPE	Device type not recognized	error
`1800000F`	BUFFER OVERFLOW	FHS buffer capacity exceeded	error
`18000010`	INVALID TASK NAME	Task name not recognized	error
`18000011`	INVALID BUFFER ADDRESS	Buffer memory address is invalid	error
`18000012`	INVALID FILE TYPE	File type not recognized or unsupported	error
`18000013`	INTERNAL FHS ERROR	Internal FHS subsystem error	error
`18000014`	INVALID PARAM BLOCK ADDRESS	Parameter block address invalid in FHS	error
`18000015`	DATA BLOCK LENGTH ERROR	Data block length exceeds limit	error
`18000016`	SIZE ERROR	Data size exceeds limit	error
`18000017`	NONEXISTENT FILE NAME	Referenced file does not exist	warning
`18000019`	KEY LENGTH ERROR	Key field length is invalid	error
`1800001A`	FAB LENGTH ERROR	File access block length exceeds limit	error
`1800001B`	DEFAULT VOLUME NOT DEFINED	System default volume not configured	warning
`1800001C`	INVALID STATE FOR COMMAND	Command invalid for current system state	warning
`1800001D`	USER NOT OWNER OR ADMINISTRATOR	User lacks authority for operation	warning
`18000020`	CFMS CPU TIME OUT	CFMS CPU timeout in FHS operation	error
`18000021`	CFMS CPU FAIL	CFMS CPU failure detected in FHS	critical
`18000022`	CFMS LU SPACE FULL	CFMS logical unit storage full in FHS	error
`180000CD`	DISK SPACE FULL	FHS disk space exhausted	error
`180000D1`	UNRECOVERABLE DEVICE ERROR	FHS device hardware failure	critical
`180000D2`	DATA COMPARE ERROR	FHS data integrity check fails	error
`180000D3`	SECTOR PROTECT ERROR	FHS sector protection violation	warning
`180000E1`	DEVICE NOT READY	FHS device offline or unresponsive	error
`180000E2`	DEVICE BUSY	FHS device busy with another operation	warning
`180000E3`	DATA CRC ERROR	FHS data CRC validation fails	error
`180000E4`	WRITE PROTECTED DEVICE	FHS write protected media	warning
`180000E5`	DELETED DATA MARK DETECTED	FHS encounters deleted data marker	warning
`180000E6`	TIMEOUT	FHS operation timeout	error
`180000E7`	INVALID SECTOR ADDRESS	FHS sector address out of range	error
`180000E8`	CHECKSUM ERROR	FHS checksum validation fails	error
`180000E9`	DISK RESTORE ERROR	FHS disk restore operation fails	error
`180000EA`	DATA OVERRUN	FHS data transfer rate exceeded	error
`180000EB`	DEVICE STATUS CHANGED	FHS device status change during operation	warning
`180000EC`	TRACK/SECTOR ID NOT FOUND	FHS disk track/sector ID not found	error
`180000ED`	ADDRESS MARK CRC ERROR	FHS address mark CRC fails	error
`180000EE`	SEEK ERROR	FHS disk seek operation fails	error
`180000EF`	BAD SECTOR	FHS bad sector detected	error
`180000F1`	CHANNEL BUSY	FHS I/O channel busy	warning
`180000F2`	CHANNEL DMA ERROR	FHS DMA channel error	error
`180000F3`	UNRECOVERABLE CHANNEL ERROR	FHS channel unrecoverable error	critical
`180000F4`	CONTROLLER ERROR	FHS controller malfunction	error
`180000F5`	DEVICE CONFIGURATION ERROR	FHS device not properly configured	error
`180000F6`	DMA BUS ERROR	FHS DMA bus error	error
`180000F7`	DMA MAPPING ERROR	FHS DMA address mapping fails	error
`180000F8`	DMA CONTROLLER ERROR	FHS DMA controller malfunction	error
`18UUYYZZ`	Trap 3 ERROR	FPU Trap 3 exception occurred	error
`20000001`	UNDEFINED DIRECTIVE	Undefined load file directive	error
`20000012`	OUT OF SEGMENT AREA	Load address exceeds segment limits	error
`20000013`	FILE IS NOT A LOAD FILE	File format not recognized as load file	error
`20–28`	Scan Processor SMC board hardware test error	Error during SMC board hardware test	error
`20–2C (Display)`	Display Processor OVL board test error	Error during OVL board hardware test	error
`21-11`	Error during MRX Board test	Hardware Test phase testing MRX Board	error
`28YY0001`	Directive No. remains undecided	DMA directive number not determined	error
`28YY0002`	Invalid Parameter Block Address	DMA parameter block address invalid	error
`28YY0003`	Invalid direction Code	DMA direction code invalid	error
`28YY0004`	Invalid memory address	DMA memory address out of range	critical
`28YY0005`	Invalid Data Size	DMA data size invalid or out of range	error
`28YY0006`	Invalid CPU number	DMA CPU number not recognized	error
`28YY0080`	Channel Busy	DMA channel in use	warning
`28YY0081`	Configuration Error	DMA configuration is invalid	critical
`28YY0082`	Operation Timing Error	DMA operation timing constraint violated	error
`28YY0084`	Address Error	DMA address error detected	critical
`28YY0085`	Address Error	DMA address boundary error	critical
`28YY0086`	Address Error	DMA address range error	critical
`28YY0087`	Address Error	DMA memory address error	critical
`28YY0088`	Bus Error	DMA bus error detected	critical
`28YY0089`	Bus Error	DMA system bus error	critical
`28YY008A`	Bus Error	DMA I/O bus error	critical
`28YY008B`	Bus Error	DMA memory bus error	critical
`28YY008C`	Count Error	DMA count value error	error
`28YY008D`	Count Error	DMA transfer count error	error
`28YY008E`	Count Error	DMA packet count error	error
`28YY008F`	Count Error	DMA sequence count error	error
`28YY0090`	External Compulsory Stop	DMA external halt signal received	info
`28YY0091`	Software Compulsory Stop	DMA software halt signal sent	info
`28YY00A0`	Time Out	DMA operation exceeds time limit	error
`2D–2E (Display)`	Display Processor IFB2 board test error	Error during IFB2 board hardware test	error
`30–31`	Scan Processor FCP3 test error	Error during FCP3 board hardware test on SMP local bus	error
`30–31, 39 (Display)`	Display Processor local bus memory test error	Error during FPU main data memory test on DMP local bus	error
`31-39`	Error during FMP2 Board test	Hardware Test phase testing FMP2 Board	error
`32–38`	Scan Processor FCP command/status communication error	Error during command write, status read or interrupt between FPU and SMP	error
`32–38 (Display)`	Display Processor FCP communication error	Error during command write, status read or interrupt between FPU and DMP	error
`40–41, 49`	Scan Processor FCP3 address signal error	Error in FCP3 board test or local bus address signal	error
`41-43`	Communication error between FMP and SMP	Hardware Test phase when testing FMP-SMP communication	error
`42–48`	Scan Processor FCP command/status error variant	Error during command write, status read or interrupt between FPU and SMP	error
`45-4F`	Communication error between FMP and DMP	Hardware Test phase when testing FMP-DMP communication	error
`48YY0001`	Directive No. Error	Image data unpack directive invalid	error
`48YY0002`	Odd parameter Address	Image unpack parameter address is odd	error
`48YY0003`	Unpack Task is Busy	Image unpack task still processing	warning
`48YY0004`	Unpack Task is not Busy	Image unpack task unexpectedly idle	warning
`48YY0010`	Odd Information Block Address	Image info block address is misaligned	error
`48YY0011`	Invalid parameter	Image unpack parameter invalid	error
`48YY0020`	Not Same Task	Different task completed unpack than requested	error
`4A–4B`	Scan Processor DBU board test error	Error during DBU board hardware test	error
`50`	Directive No. Error	Invalid directive number sent to display system	error
`500000F0`	Image Type is not Supported	Display system does not support image type	error
`500000F1`	Display Task is Busy	Image display task currently processing	warning
`500000F2`	Invalid file Name	Image file name invalid or file not found	error
`500080YY`	Task abort	Image display task aborted	error
`50–55`	Scan Processor DMA access error	DMA access error or system bus access channel fault	error
`50–55 (Display)`	Display Processor system bus access error	DMA access error or system bus access channel fault	error
`51`	Odd Parameter Address	Parameter address is odd rather than even	error
`53`	Invalid Request	Request to display system is invalid or malformed	error
`5314**30`	TARGET CPU HALT	Specified CPU halted unexpectedly	critical
`5314**31`	TARGET CPU NONEXISTENT	Reference to non-existent CPU	error
`5323**30`	TARGET CPU HALT	Specified CPU halted unexpectedly	critical
`5323**31`	TARGET CPU NONEXISTENT	Reference to non-existent CPU	error
`56`	Invalid Parameter (W/L Control)	Invalid window/level control parameter received	warning
`57`	Invalid Parameter (Frame Setting)	Invalid frame setting parameter	warning
`58`	Invalid Parameter (Frame Data)	Invalid frame data received	error
`59`	Invalid Parameter (W/L)	Invalid window/level parameter	warning
`5A`	Invalid Parameter (Identify)	Invalid identification parameter	warning
`5C`	Invalid Parameter (Image Display)	Invalid image display parameter	error
`5C (Display)`	Display Processor post-processing error	Error occurs during post-processing after hardware test	warning
`5D`	Invalid Parameter (Image Data Read)	Invalid image data read parameter	error
`5E`	Invalid Parameter (Paging)	Invalid paging parameter	warning
`5F`	Invalid Parameter (Interrupted Display Processing)	Invalid parameter during interrupted display operation	warning
`60`	Invalid Parameter (Interrupted FPU Processing)	Invalid parameter during interrupted FPU operation	error
`60`	Abnormal termination during boot before vector set	Boot-up (IBOOT) phase before CPU vector initialization	critical
`60`	Scan Processor ROM or interrupt error	Abnormal exception during SMP ROM boot before vector set	error
`60 (Display)`	Display Processor ROM or interrupt error	Abnormal exception during DMP ROM boot before vector set	error
`62`	Hard Disk or Floppy Disk error during boot	Boot-up (IBOOT) phase when accessing disk drive	critical
`63`	Information sector 0 of disk not proper	Boot-up (IBOOT) phase when reading disk	critical
`64`	Exception during FMP1 ROM execution (not Bus/Address Error)	Boot-up (IBOOT) phase during ROM execution	critical
`65`	Bus or Address Error during FMP1 execution	Boot-up (IBOOT) phase during ROM execution	critical
`68`	Time Out (Image Display)	Image display operation exceeds time limit	error
`69`	Time Out (Graphic Cursor)	Graphic cursor operation exceeds time limit	warning
`6A`	Time Out (W/L Processing)	Window/level processing operation exceeds time limit	warning
`6B`	Time Out (Interrupted Display Processing)	Interrupted display processing exceeds time limit	warning
`6C`	Time Out (Interrupted FPU Processing)	Interrupted FPU processing exceeds time limit	error
`6F`	Graphic Sequence Error	Graphical operation sequence error detected	error
`70`	Exception during IPLT (Initial Program Load Test) execution	OS File Loading phase during boot loader execution	error
`70`	Directive No. Error	Invalid directive for PLNCTL task	error
`70`	Scan Processor OS loading error	Exception during IPLT run for OS loading	error
`70 (Display)`	Display Processor OS loading error	Exception during IPLT run for OS loading	error
`71`	Odd Parameter Address	Odd parameter address for PLNCTL	error
`72`	Device No. Error	Invalid device number	error
`72`	OS file not found on specified disk	OS File Loading phase searching for OS file	error
`73`	Invalid Request	Invalid request to PLNCTL	error
`73`	Scan Processor OS loading timeout	OS for FMP has not started or loading timeout	error
`73 (Display)`	Display Processor OS loading timeout	OS for FMP has not started or loading timeout	error
`74`	Hard Disk or Floppy Disk error during OS loading	OS File Loading phase when accessing disk drive	critical
`76`	Invalid Parameter (Erase Processing)	Invalid erase operation parameter	warning
`77`	Invalid Parameter (Graphic DMA)	Invalid DMA parameter for graphics	error
`78`	Invalid Parameter (Screen Save)	Invalid screen save parameter	warning
`79`	Invalid Parameter (Overlay Display)	Invalid overlay display parameter	warning
`7A`	Invalid Parameter (Graphic Cursor)	Invalid graphic cursor parameter	warning
`7C`	Invalid Parameter (LED/Buzzer)	Invalid LED or buzzer control parameter	unknown
`80`	Time Out (Erase Processing)	Erase operation exceeds time limit	error
`80`	File Processor initialization exception	Exception during INIT routine execution	error
`8010`	BUS ERROR	Processor bus error	critical
`8011`	ADDRESS ERROR	Invalid memory address access	critical
`8012`	ILLEGAL INSTRUCTION	CPU encountered undefined instruction	critical
`8013`	ZERO DIVIDE	Division by zero attempted	error
`8014`	CHK INSTRUCTION	CHK instruction condition violated	error
`8015`	TRAPV INSTRUCTION	TRAPV instruction trap condition	error
`8016`	PRIVILEGE VIOLATION	Privilege instruction executed in user mode	critical
`8017`	UNIMPLEMENTED INSTRUCTION ('1010')	CPU encountered unimplemented 1010 instruction	critical
`8018`	UNIMPLEMENTED INSTRUCTION ('1011')	CPU encountered unimplemented 1011 instruction	critical
`80 (Display)`	Display Processor initialization exception	Exception during INIT routine execution on DMP	error
`80 (Scan)`	Scan Processor initialization exception	Exception during INIT routine execution on SMP	error
`81`	File Processor bus error during memory clear	Bus error exception during memory clearing in INIT	error
`81`	Time Out (Graphic DMA)	DMA transfer for graphics exceeds time limit	error
`81 (Display)`	Display Processor bus error during memory clear	Bus error exception during memory clearing in INIT	error
`81 (Scan)`	Scan Processor bus error during memory clear	Bus error exception during memory clearing in INIT	error
`82`	File Processor software inconsistency detected	Contradiction found in software during INIT routine	error
`82`	Time Out (Screen Save–overlay)	Screen save with overlay exceeds time limit	warning
`82 (Display)`	Display Processor software inconsistency	Software inconsistency detected during INIT routine	error
`82 (Scan)`	Scan Processor software inconsistency	Software inconsistency detected during INIT routine	error
`83`	File Processor memory allocation error	Error during memory area allocation in INIT	error
`83`	Time Out (Screen Save–Image)	Screen save for image exceeds time limit	warning
`83 (Display)`	Display Processor memory allocation error	Error during memory area allocation	error
`83 (Scan)`	Scan Processor memory allocation error	Error during memory area allocation	error
`84`	Scan Processor terminal display port timeout	Timeout on DMP terminal display port during initialization	error
`84`	Time Out (Graphic Cursor)	Graphic cursor update exceeds time limit	warning
`84 (Display)`	Display Processor terminal display port timeout	Timeout on DMP terminal display port during initialization	error
`8E`	ACRTC Command Error	CRT controller command execution fails	critical
`8F`	Graphic Sequence Error	Graphics command sequence error	error
`90`	Directive No. Error	Invalid directive for KBDRY task	error
`90`	File Processor program loop or CPU halt	Program enters infinite loop or CPU halts	error
`90000001`	PINT (FPU → CPU Interrupt)	FPU signals interrupt to CPU	info
`90000002`	RESET	FPU reset completed	info
`90000003`	INVALID PARAMETER	Invalid parameter sent to FPU	warning
`90000004`	TIME OUT	FPU operation exceeds time limit	error
`90000005`	BUSY (FPU RUNNING)	FPU currently executing operation	warning
`90000006`	BUSY (FPU INITIALIZING)	FPU initialization in progress	info
`90000007`	ILLEGAL (Error Occurred in FPU)	FPU internal error detected	critical
`9000000B`	INTERRUPT OVER (Interrupt Buffer Overflow)	FPU interrupt buffer exceeded capacity	error
`90 (Display)`	Display Processor program loop or halt	Program enters infinite loop or CPU halts	error
`90 (Scan)`	Scan Processor program loop or halt	Program enters infinite loop or CPU halts	error
`91`	Invalid Parameter Block Address	Invalid keyboard parameter block address	error
`92`	Invalid Parameter	Invalid keyboard parameter	warning
`93`	Invalid Request	Invalid keyboard request	warning
`94`	Can't requested Command	Keyboard cannot execute requested command	warning
`95`	Invalid No. of Characters	Keyboard command has invalid character count	warning
`98`	Key Board not allocated	Keyboard device not properly allocated	error
`99`	Channel Busy	Keyboard channel is busy	warning
`9A`	Response Time Out	Keyboard response exceeds time limit	error
`9C`	Hardware Error	Keyboard hardware malfunction detected	critical
`9D`	Hardware Error	Keyboard hardware malfunction	critical
`9E`	Hardware Error	Keyboard hardware error	critical
`9F`	Hardware Error	Keyboard hardware error	critical
`A0000001`	I. D No. Error	Raw data ID number error	error
`A0000002`	Not Valid	Raw data validity check fails	error
`A0000003`	Transfer Byte Error	Raw data byte count mismatch	error
`A0000004`	Sub Code Error	Raw data sub-code error	error
`A0000005`	Size Error	Raw data size mismatch	error
`A0000006`	Can not Reserve	Raw data cannot be reserved/allocated	error
`A0 (Display)`	Display Processor abnormal memory	Abnormal memory condition during application task	error
`A0 (Scan)`	Scan Processor abnormal memory	Abnormal memory condition during application task	error
`A1`	Invalid Parameter	Invalid parameter for User/Prime Display function	warning
`A1 (Display)`	Display Processor task start failure	Abnormal termination due to memory layout or task configuration error	error
`A1 (Scan)`	Scan Processor task start failure	Abnormal termination due to memory layout or task configuration error	error
`A2`	Not Defined Area	Display area not defined in configuration	error
`A3`	Duplicate Define	Display area defined more than once	error
`A4`	Value Not Defined	Required display value not defined	error
`A5`	Invalid Area Position	Display area position is invalid	warning
`A6`	Invalid Area Size	Display area size is invalid	warning
`AA`	DCB Graphic Flag Double Assigned	DCB graphics flag assigned to multiple areas	error
`B7`	Read Event Flag Error	Event flag read operation fails	error
`B8`	Event Status Error	Event status is invalid or corrupted	error
`B9`	Event Busy Error	Event system busy or blocked	warning
`BA`	Not Enable Mag. Character Error	Magnetic character support not enabled	warning
`BB`	Cancel Flag Error	Cancel flag operation fails	warning
`BC`	Over Split Over Error	Over-split condition detected	error
`BD`	Not Split Device Error	Device split configuration missing	error
`BE`	Over Line Error	Over-line condition detected	error
`BF`	Invalid Parameter Error	Invalid parameter in WTTY system	warning
`C0`	Write FIFO Empty Time Out Error	Write FIFO remains empty beyond timeout	warning
`C1`	Write FIFO Ready Time Out Error	Write FIFO not ready within timeout	error
`C2`	Read FIFO Ready Time Out Error	Read FIFO not ready within timeout	error
`C3`	Read FIFO Empty Time Out Error	Read FIFO becomes empty before timeout expected	warning
`C5`	Command End Time Out Error	Command execution does not complete in time	error
`C8`	Command Error	Command execution fails	error
`C.E.`	Communication Error	Digital signal path between servo amp and motor is degraded or broken	critical
`CF`	ACRTC NOT READY	Display CRT controller not ready	critical
`D0 (Display)`	Display Processor bus error exception	Bus error from accessing absent address or invalid instruction	error
`D0 (Scan)`	Scan Processor bus error exception	Bus error from accessing absent address or invalid instruction	error
`D1`	Configuration Error	System configuration is invalid	critical
`D1 (Display)`	Display Processor address error exception	Word reference to odd number address	error
`D1 (Scan)`	Scan Processor address error exception	Word reference to odd number address	error
`D2`	Operation Timing Error	Operation timing constraint violated	error
`D2~D8 (Display)`	Display Processor instruction/memory corruption error	Incorrect instruction or corrupted memory detected	error
`D2~D8 (Scan)`	Scan Processor instruction/memory corruption error	Incorrect instruction or corrupted memory detected	error
`D4`	Address Error	Memory address error detected	critical
`D8`	Bus Error	System bus error detected	critical
`DC`	Count Error	Counter or count value error	error
`E0`	Abort	Operation aborted by user or system	warning
`E0 (Display)`	Display Processor task abort error	Abnormal termination of OS-related task	error
`E0 (Scan)`	Scan Processor task abort error	Abnormal termination of OS-related task	error
`E1`	Software Abort	Software-initiated operation abort	warning
`E8`	DMAC Ready Time Out Error	DMA controller not ready within timeout	critical
`EF (Display)`	Display Processor abnormal OS	Abnormal OS detected during application task	error
`EF (Scan)`	Scan Processor abnormal OS	Abnormal OS detected during application task	error
`ER-001`	System Error	Error of Directive/System Subroutine	error
`ER-002`	Undefined Event Received	Failure in Event Data communication message	warning
`ER-003`	Abnormal Termination Detected	Task terminated abnormally	error
`ER-004`	Task Termination	EDSP detected task termination	info
`ER-099`	TREND Task Error	Error during message registration to disk	error
`ER-100`	Aperture Error	Aperture positioning or command error	error
`ER-101`	Axial Scan Error	Axial scan command or execution error	error
`ER-102`	Gantry Error	Gantry positioning or rotation error	error
`ER-103`	Stationary Scan Error	Stationary scan command or execution failure	error
`ER-104`	Manual Gantry Error	Manual gantry operation failure	error
`ER-105`	Gantry Communication Error	Communication failure between TGP and Scan Processor	error
`ER-106`	Tilt Error	Tilt request out of range	warning
`ER-107`	Scout Scan Error	Scout scan execution failure	error
`ER-109`	Cradle Mode Error	Cradle mode operation failure	error
`ER-111`	Table Electrical Communication Error	Communication failure with table electronics	error
`ER-115`	TGE Response Timeout	TGE subsystem fails to respond in time	error
`ER-116`	XG Response Timeout	X-ray generator fails to respond in time	error
`ER-117`	XG Fail	X-ray generator failure	critical
`ER-118`	SCNCTL Sequence Error	Scan control sequence error	error
`ER-131`	Comm. Receive Buffer Over	Communication receive buffer overflow	warning
`ER-132`	Comm. Transmit Buffer Over	Communication transmit buffer overflow	warning
`ER-133`	Comm. Write Reg. Ans. Timeout	No answer to register write command	error
`ER-135`	PNLCTL Sequence Error	Panel control sequence error	error
`ER-140`	Anode Temperature Over	Tube anode temperature exceeds limit	warning
`ER-141`	Case Temperature Over	Tube case temperature exceeds limit	warning
`ER-151`	Scan Timeout	Scan data collection did not complete	error
`ER–152`	Warm up Error	During system warm-up, reference channel mean value, high frequency component, rate, or standard deviation out of specification	error
`ER–153`	Initialize Air Data Error	During air calibration initialization, data validation fails	error
`ER–160`	Event Sequence Error	Incorrect sequence of update, OK/NO decision, or soft key events due to off-line end demand or manual soft key operation	warning
`ER–201`	Recon Timeout	Image reconstruction does not complete within specified time limit	error
`ER–202`	Invalid Parameter	Parameter conversion error between Operator interface and CPU during reconstruction	critical
`ER–400`	Duplicate Study ID Deleted	Multiple STUDY IDs found in STUDY POINTER area during data consistency check	warning
`ER–401`	No Study Inf. ID Deleted	STUDY POINTER exists but corresponding STUDY INF. record not found	warning
`ER–402`	Illegal Study Eye Catcher	STUDY INF. header signature (eye catcher) does not match expected value	warning
`ER–403`	Illegal Study ID Deleted	STUDY ID in chained STUDY INF. differs from STUDY POINTER's STUDY ID	warning
`ER–404`	Study in Old Area Deleted	STUDY POINTER references new STUDY INF. in old memory area during area reorg	warning
`ER–405`	Old Study Inf. Study Deleted	STUDY POINTER references old STUDY INF. in new memory area	warning
`ER–406`	Same Area Inf. Study Deleted	Duplicate STUDY POINTER found with same memory area reference in STUDY INF.	warning
`ER–407`	No Buffer for Image Inf.	IMGINF buffer space not allocated or not found when attempting to read	error
`ER–408`	Image Inf. Size Over	IMGINF data exceeds allocated buffer size when reading from storage	error
`ER–409`	Illegal Image Inf Eye Catcher	IMGINF header signature (eye catcher) does not match expected value	warning
`ER–410`	Illegal Study No Image Deleted	STUDY NO. in STUDY INF. does not match STUDY NO. in IMAGE INF.	warning
`ER–411`	Duplicate Image Inf Deleted	Duplicate IMAGE IDs found in IMGINF	warning
`ER–412`	No Image Data Image Inf Deleted	IMAGE DATA not found in storage but IMAGE INF. record exists	warning
`ER–413`	Illegal Study ID Image Deleted	STUDY ID in IMGPTR differs from STUDY ID in IMGINF.	warning
`ER–414`	Illegal Study ID Image Deleted	IMAGE ID in IMGPTR differs from IMAGE ID in IMGINF.	warning
`ER–415`	Same Area Image Inf. Deleted	IMAGE DATA and IMGINF use same memory area (should be separate)	warning
`ER–416`	Image Data Area Size Over	Required IMAGE DATA storage exceeds available area	error
`ER–417`	Duplicate Image Pointer Deleted	Duplicate IMGINF found using same memory area as existing IMGINF	warning
`ER–418`	Image Pointer Area Size Over	Required IMAGE POINTER area exceeds available allocation	error
`ER–419`	Same Area Image Inf Deleted	IMGINF uses same area as another IMGINF during consistency check	warning
`ER–420`	Image Inf Area Size Over	Required IMGINF area exceeds available allocation	error
`ER–421`	No Image Inf Study Inf Deleted	STDINF exists but has no associated IMGINF records	warning
`ER–422`	Study Inf Area Size Over	Required STDINF area exceeds available allocation	error
`ER–430`	Event Code Error	IMAGE FILE MANAGEMENT PROCESSOR receives illegal or undefined event code	error
`ER–431`	Event Sequence Error	IMAGE FILE MANAGEMENT receives event at illegal timing or sequence state	error
`ER–432`	Logical Error	Logic error detected in IMAGE FILE MANAGEMENT processor state	error
`ER–433`	Image Already Stored	Attempt to store image that is already in storage (MT or FD)	warning
`ER–434`	Image Already Exist	Attempt to retrieve image that already exists in destination	warning
`ER–435`	Image Not Found	Image not found in disk or device during store or retrieve operation	error
`ER–436`	Image in Scan Study, No Load	Attempt to retrieve image whose STUDY# matches currently scanning STUDY#	warning
`ER–437`	OD Study Incorrect, No Store	During OD store, only STUDY INF. OR only IMAGE INF. exists, not both	error
`ER–440`	OD Study Inf. Nothing	IMAGE INF. file exists in OD but corresponding STUDY record not found	error
`ER–441`	OD Image Inf. Nothing	STUDY record exists in OD but IMAGE INF. file for that study not found	error
`ER–442`	OD Study Inf. Incorrect	Number of images in STUDY INF. does not match number in IMAGE INF. file	error
`ER–443`	OD Study Inf. Nothing Deleted	IMAGE INF. file exists but corresponding STUDY not found in OD	warning
`ER–500`	Inhalator not Ready	Inhalator device does not respond with ready status within specified timeout after xenon transmission command	error
`ERROR XXXXXXXX`	System error occurred during Support Display operation	Software detects internal error condition	error
`F0`	Time Out Error	General operation timeout	error
`F1`	Can't Display During Horizontal Blanking	Display attempted during horizontal blanking interval	warning
`F2`	Can't Refresh DRAM During Horizontal Blanking	DRAM refresh attempted during horizontal blanking	error
`F.E.`	Circuit Breaker Off or tripped	AC input breaker has opened due to overcurrent or fault	critical
`FF`	Invalid Parameter Error	Invalid parameter in Basic graphics	warning
`FILE NOTHING`	Named file does not exist	User enters name of nonexistent file	warning
`INVALID CURSOR`	Cursor is not properly positioned or out of range	ROI function selected before cursor positioned or cursor placed outside valid range	warning
`INVALID ENTRY`	User provided unacceptable data entry	Invalid parameter entered at Support Display menu	warning
`INVALID ENTRY`	User input was not recognized or valid	Wrong menu selection or invalid parameter entry	warning
`INVALID FILE`	File format is incorrect	User enters file name with wrong format	warning
`MS–000`	Abort Button on	User presses Abort button on control panel	info
`MS–001`	Start Timeout	Scan does not start within specified time after start command issued	warning
`MS–002`	Insert KEY–FD	Maintenance program requires key floppy disk but it is not inserted	warning
`MS–003`	X–Ray Over Range Detect	DAS (Data Acquisition System) data exceeds maximum acceptable range	error
`MS–004`	FPU Busy	Floating Point Unit processor is busy with previous calculation when new command issued	warning
`MS–005`	Tube Warm up End	X-ray tube warm-up procedure completes successfully	info
`MS–006`	Tube Warm up Canceled	X-ray tube warm-up procedure is canceled by user or system	info
`MS–007`	Reconstruction's Queue Full	Priority reconstruction request queue reaches maximum capacity	warning
`MS–008`	Recon Completion	Image reconstruction completes successfully (shown in non-Auto Display mode)	info
`MS–009`	Calibration End	Calibration program completes successfully	info
`MS–010`	Calibration Canceled	Calibration routine is canceled by user or system	info
`MS–011`	Warm up Scan Set Timeout	Scan setup for warm-up does not complete within specified time	warning
`MS–060`	Display Busy	Requested program cannot run because display is in use by another process	warning
`MS–070`	Image Data Full (Delete & Reset)	Reconstructed image data cannot be stored because disk is full	error
`MS–071`	Image inf. Full in Study	Reconstruction cannot proceed because IMGINF. for the study is full	error
`MS–072`	Next Scan Preparation Time Out	In Dynamic Scan mode, scan does not complete within specified delay time	warning
`MS–099`	On Dynamic Scan	Another function is running during a Dynamic Scan operation	info
`O.C.`	Over Current alarm	Motor winding short, lead grounded, transistor shorted, or control circuit fault	critical
`O.H.`	Over Heat alarm	Servo amp temperature exceeds safe operating limit	critical
`O.L.`	Over Load alarm	Excessive load on motor during rotation	critical
`P.E.`	Dynamic Brake Function Fail	Dynamic brake resistor open or input voltage too high	critical
`RANGE ERROR`	Entered parameters exceed specified range	User inputs MIN or MAX values outside allowed bounds	warning
`S.E.`	Speed Error or feedback mismatch	Actual motor speed does not match commanded speed	critical
`SYSTEM ERROR XXXXXXXX`	Unspecified system error with error code appended	Internal software or hardware fault during maintenance operation	critical
`V.E.`	Voltage Error or Power Fail	Input AC voltage drops below safe minimum or control power rails out of range	critical
`WARM UP ERROR`	Warm-up routine failed to collect sufficient raw data or data analysis failed	Raw data collected during 7th stationary scan (120 kV 30 mA, 10 mm slice, 8 sec apex) is insufficient or fails quality check during analysis phase	error

Likely causes and actions for each code are in ServiceForge. Connect ServiceForge to your AI

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ServiceForge knowledge base record. Field-unverified unless technicians confirmed it. A teaching summary of the record, not a service manual. Export 2026-10-14.