Balloon pumps · CS family

Getinge CS300: troubleshooting and error codes

The ServiceForge knowledge base holds 46 documented symptoms for the Getinge CS300, with 69 ranked causes, 82 diagnostic checks with test points and expected values, and 86 error codes. Each symptom below shows its causes and the first check; the rest is one connection away. Connect ServiceForge to your AI

Symptoms

Autofill failure - purge pressure did not reach target patient safety

IAB tubing and Safety Disk fail to reach target purge pressure within required time; fault codes 60, C0, D0, 1A0

Ranked causes

1. Slow purge, vacuum leak or insufficient vacuum (common)
2. Leak in IAB circuit or catheter (common)
3. Extreme water buildup in lines (occasional)
4. Clogged purge line filter (occasional)
5. K3/K5 solenoid valve failure (occasional)

First check

Run Safety Disk Leak Test

Test point: Safety Disk test port
Expected: No leaks detected; purge reaches target pressure within time limit

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

Autofill failure - cylinder did not empty patient safety

Helium volume cylinder fails to empty (close S2) within 10 seconds at beginning of Autofill; system logs fault code 10 or 140

Ranked causes

1. No IAB connected or disconnected (common)
2. Empty sensor (S2) failure or misalignment (common)
3. No vacuum or vacuum loss (occasional)
4. Pinched or obstructed tubing to volume cylinder (occasional)

First check

Verify IAB connection

Test point: IAB connector and pneumatic ports
Expected: IAB firmly seated with no gaps; audible click on connection

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

Pneumatic performance - low average pressure patient safety

Average pressure below 300 mmHg during Pneumatic Performance Test; indicates leak, regulator malfunction, or pump/compressor issue

Ranked causes

1. Leak in pneumatic system (common)
2. 8 PSI regulator needs adjustment or replacement (occasional)
3. Clogged muffler restricting flow (occasional)
4. Pump motor requires rebuild (rare)

First check

Pneumatic Performance Test - average pressure measurement

Test point: Safety Disk pressure circuit during 30-second 150 bpm pump cycle
Expected: Average pressure between 300 and 413 mmHg, 300–413 mmHg

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

Autofill failure - leak or blood detected patient safety

Blood or leak detected during IAB purge cycle at various stages; fault codes with prefix C, E, 4, 8, 9 (e.g. CE0, 4E0, 82 0)

Ranked causes

1. Blood detected from shuttle pressure surveillance (C/E prefix) (common)
2. Leak in catheter or Autofill system (4 prefix) (common)
3. Blood detected optically (8/9 prefix) (occasional)

First check

Run Safety Disk Leak Test

Test point: Safety Disk test port and all IAB connections
Expected: No leaks detected; pressure holds

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

Autofill failure - cylinder did not reach full sensor patient safety

Helium volume cylinder fails to reach full sensor (close S1) within 10 seconds during Sensor IAB calibration; fault code 50

Ranked causes

1. Low helium pressure in tank (common)
2. Full sensor position incorrect or volume cylinder sluggish (occasional)

First check

Check helium tank pressure

Test point: Helium tank gauge
Expected: Pressure above minimum operating level per system spec

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

Calibration: Atmospheric transducer gain and offset

Calibrate Atmospheric absolute pressure transducer gain at 200 mmHg and offset at atmospheric pressure

Ranked causes

1. Atmospheric transducer gain out of specification (unknown)
2. Atmospheric transducer offset out of specification (unknown)

First check

Attach manometer to atmospheric transducer U54 using tubing adapter

Test point: Atmospheric transducer U54 port
Expected: Adapter and tubing installed securely

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

Calibration: Balloon (Shuttle) transducer gain and offset

Calibrate Shuttle absolute pressure transducer gain at 380 mmHg and offset at atmospheric pressure

Ranked causes

1. Shuttle transducer gain out of specification (unknown)
2. Shuttle transducer offset out of specification (unknown)

First check

Remove tubing from IAB FILL PORT and connect precision manometer

Test point: IAB FILL PORT on Safety Disk
Expected: Manometer connected securely

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

Fiber Optic Signal Count or Level below acceptable threshold caution

Fiber Optic Test fails Signal Count (< 55) or Signal Level (< 153) criteria; indicates lamp ferrule contamination or module failure

Ranked causes

1. Lamp ferrule contamination or debris (common)
2. Fiber Optic module failure or degradation (occasional)

First check

Fiber Optic Test - Signal Count parameter

Test point: Sensor Module signal count during 30-second pump cycle
Expected: Signal Count ≥ 55 count, ≥55

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

K5 solenoid leak after K3 deactivation patient safety

Vacuum leak detected when K5 activated in test sequence; possible hole in Safety Disk or leak through K3 solenoid

Ranked causes

1. Hole in Safety Disk membrane (common)
2. Leak through K3 solenoid (occasional)

First check

Safety Disk Leak Test - K5 activation phase

Test point: Safety Disk pressure circuit
Expected: Pressure change ≤ ±4 mmHg (adult disk) or ≤ ±6 mmHg (adult chamber) or ≤ ±10 mmHg (pediatric chamber) over 2 minutes, ±4 mmHg adult, ±6 mmHg adult chamber, ±10 mmHg pediatric

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

Motor speed calibration out of tolerance caution

Motor actual speed not within 3% of 1760 RPM after adjustment; circuit or motor defect suspected

Ranked causes

1. Motor Controller board malfunction (occasional)
2. DC motor defect or bearing wear (occasional)

First check

Motor Calibration/Test - initial speed set to 1600 RPM

Test point: Motor Controller board (8 volt input)
Expected: Actual motor speed within 20% of 1600 RPM (1280–1920 RPM), ±20%

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

Perform motor speed and temperature verification caution

Technician monitors DC motor/pump speed and internal unit temperature via Pneumatic System Test screen to verify motor functionality and cooling adequacy during extended operation.

Ranked causes

1. Motor speed below nominal or not running (rare)
2. Unit overheating due to ambient temperature or blocked venting (occasional)

First check

Observe motor speed reading during normal operation

Test point: Pneumatic System Test screen, Motor Speed field
Expected: Approximately 1762 rpm

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

Pneumatic performance - inadequate vacuum patient safety

Average vacuum reading above -176 mmHg (less vacuum) at sea level; indicates pneumatic leak or compressor issue requiring rebuild

Ranked causes

1. Leak in pneumatic system (common)
2. Compressor requires rebuild (occasional)

First check

Pneumatic Performance Test - average vacuum measurement

Test point: Safety Disk vacuum circuit during 30-second pump cycle
Expected: Minimum -176 mmHg at sea level (adjust per altitude table for higher elevations), ≥ -176 mmHg sea level

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

Run pneumatic safety disk leak test patient safety

Technician performs automated leak detection test via Service Diagnostics to check Safety Disk, solenoid control lines, and shuttle/drive circuit integrity; system measures pressure decay over time.

Ranked causes

1. Leak in Safety Disk assembly or IAB circuit (occasional)
2. Leak in fill circuit or transducer line (rare)

First check

Verify all solenoids deactivated at start

Test point: Pneumatic System Test screen
Expected: No solenoids highlighted in reverse graphics; system in safe state

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

Safety Disk membrane leak suspected patient safety

Vacuum leak detected during pneumatic test; Safety Disk may have hole in membrane or leak through K5 solenoid after K3 activation

Ranked causes

1. Hole in Safety Disk membrane (common)
2. Leak through K5 solenoid (occasional)

First check

Safety Disk Leak Test - K3 activation phase

Test point: Safety Disk pressure circuit
Expected: Pressure change ≤ ±4 mmHg (adult disk) or ≤ ±6 mmHg (adult chamber) or ≤ ±10 mmHg (pediatric chamber) over 2 minutes, ±4 mmHg adult, ±6 mmHg adult chamber, ±10 mmHg pediatric

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

Safety Vent (K6A) obstruction or failure caution

Drive manifold pressure does not drop to 150 mmHg within 2 seconds during vent test; K6A solenoid may be stuck or vent tubing kinked

Ranked causes

1. K6A solenoid valve failure or obstruction (common)
2. Kinked or obstructed safety vent tubing (occasional)

First check

Safety Vent Test

Test point: Drive manifold pressure after K6A activation
Expected: Pressure drops to approximately 150 mmHg above atmosphere in less than 2 seconds, <2 seconds

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

Autofill failure - software error or invalid state patient safety

Software error or system did not advance to next pneumatic state; fault codes 40, 80, A0, 100, 120, 1D0

Ranked causes

1. Internal software or state machine error (rare)

First check

Power cycle system and retest Autofill

Test point: System power and Autofill function
Expected: Autofill completes successfully without state machine error

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

Autofill failure - transducer calibration issue patient safety

Transducers could not be zeroed or reached target atmospheric pressure at end of Autofill cycle; fault code 90 or 180

Ranked causes

1. Transducer calibration failure or sensor error (common)

First check

Perform transducer atmospheric calibration

Test point: Transducer calibration menu or test port
Expected: All three transducers zero correctly at atmospheric pressure

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

Blood Detect function test patient safety

Verify Blood Detect sensor responds when light path is blocked during autofill

Ranked causes

1. Blood Detect sensor malfunction (rare)

First check

Initiate autofill with sensor light path blocked

Test point: K6A LED and display message
Expected: 'Blood Detected' message appears and K6A LED extinguishes

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

Calibration: Autofill fill and purge times

Verify Bimba fill time, Shuttle fill time, and shuttle purge time meet specifications

Ranked causes

1. Over-pressure or leaks in fill gas path (occasional)

First check

Measure Bimba fill time in Autofill status box

Test point: Bimba fill time display
Expected: 2.5 to 6 seconds, ±3.5 seconds

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

Calibration: Autofill function test patient safety

Verify system completes autofill cycle with catheter extender and balloon attached

Ranked causes

1. Autofill circuit malfunction (rare)

First check

Initiate autofill with balloon attached

Test point: IAB Catheter Port with 40 cc balloon
Expected: Autofill cycle completes without error

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

Calibration: Autofill volume

Verify and adjust autofill volume to achieve correct shuttle pressure reading

Ranked causes

1. Volume cylinder setting out of specification (common)

First check

Connect 38.5 cc syringe and calibration chamber

Test point: IAB Catheter Extender Input on Safety Disk
Expected: Helium pressure X4 > 215 PSIG

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

Calibration: Battery runtime

Verify battery can sustain system operation for minimum specified duration from full charge

Ranked causes

1. Battery runtime insufficient (unknown)

First check

Ensure batteries fully charged

Test point: System charging indicator
Expected: Steady BATTERY CHARGING indicator

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

Calibration: Battery voltage and charging high voltage

Verify battery voltage and charging current during AC mains operation and battery-only operation

Ranked causes

1. Battery voltage out of specification (unknown)

First check

Verify BATTERY CHARGING indicator state

Test point: System display
Expected: Steady illumination

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

Calibration: Blood Back sensor voltage verification

Verify Blood Back sensor voltage is within correct range and configure switches if needed

Ranked causes

1. Blood Back sensor voltage out of specification (occasional)

First check

Measure Blood Back sensor voltage

Test point: TP4 (+) and TP5 (-) on Solenoid Driver board P/N 0670-00-0639
Expected: 1 to 2.3 volts, ±0.65 volts
Tools: DVM

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

Calibration: Condensate removal module voltage high voltage

Verify voltage to condensate removal chiller block is within specification

Ranked causes

1. Condensate removal module voltage out of specification (rare)

First check

Measure voltage to condensate removal chiller block during pumping

Test point: L6 (near JP3) and TP31
Expected: 2.8 volts V, ±0.1 V
Tools: DVM

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

Calibration: Drive transducer offset

Drive pressure does not read zero when vented to atmosphere

Ranked causes

1. Drive transducer offset misalignment (common)

First check

Vent drive pressure and measure reading

Test point: Drive transducer
Expected: 0 mmHg

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

Calibration: Drive transducer pressure

Drive transducer reading does not match Shuttle transducer reading during calibration procedure

Ranked causes

1. Drive transducer gain misalignment (common)

First check

Activate K6A and K7, measure drive transducer pressure

Test point: Drive transducer
Expected: ±2 mmHg of Shuttle transducer reading

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

Calibration: Drive transducer setup

Connect DVM to Drive transducer and initialize zero pressure reference in Service Diagnostics

Ranked causes

1. Drive transducer not configured for calibration (unknown)

First check

Connect DVM to Drive transducer signal and ground

Test point: TP24 (DRIVE_PRES) to TP33 (GND_A)
Expected: DVM connected with stable reading
Tools: DVM

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

Calibration: Fiber Optic Test

Verify lamp function, output, PWM, signal count and signal level of sensor module

Ranked causes

1. Fiber optic sensor module malfunction (rare)

First check

Run Fiber Optic Test and verify waveforms

Test point: Fiber Optic Sensor Module output
Expected: Two similar waveforms display during 30-second test

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

Calibration: Full sensor adjustment

Adjust full sensor position to detect end of autofill correctly

Ranked causes

1. Full sensor misaligned (occasional)

First check

Position full sensor for LED transition

Test point: FULL LED on volume cylinder
Expected: LED turns on then off as sensor moves right

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

Calibration: Internal transducer offset check

Verify Shuttle (Balloon), Atmospheric, and Drive transducer offset values are within acceptable range

Ranked causes

1. Transducer offset out of specification (unknown)

First check

Read Shuttle transducer offset from display

Test point: System display Pneumatic System Test screen
Expected: Between -4 mmHg and 4 mmHg
Tools: System display

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

Calibration: Pneumatic system pressure verification

Atmospheric, Shuttle and Drive transducers not reading within tolerance after calibration

Ranked causes

1. Transducer readings out of specification (occasional)

First check

Run Pneumatic System test and verify transducer readings

Test point: Atmospheric, Shuttle, Drive transducers
Expected: All readings within 2 mmHg of each other; offsets between -4 and +4 mmHg

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

Calibration: Power supply voltages high voltage

Verify AC power supply output voltages are within tolerance on Main Board and power supply assembly connectors

Ranked causes

1. Power supply out of specification (unknown)

First check

Verify red LEDs CR4 through CR9 illuminated on Main Board

Test point: Main Board
Expected: All six LEDs illuminated

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

Calibration: Pressure regulator and vacuum verification

Verify pressure regulator output and vacuum levels in drive pneumatics

Ranked causes

1. Pressure regulator out of specification or pump motor issue (occasional)

First check

Measure vacuum with K6A and K7 active

Test point: X2-Drive-Pres
Expected: 0 to 125 mmHg

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

Calibration: Reference voltage check

Verify 5V reference voltage on Front End board

Ranked causes

1. Reference voltage out of tolerance (unknown)

First check

Measure reference voltage at TP22 to GND_A

Test point: TP22 to TP33 (GND_A)
Expected: 5V ±0.1V, ±0.1V
Tools: DVM

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

Calibration: Safety Disk leak test

Procedure to verify Safety Disk and solenoid integrity for vacuum and pressure leaks

Ranked causes

1. Safety Disk membrane hole or solenoid leak (rare)

First check

Run Safety Disk Leak Test with luer plug

Test point: Safety Disk IAB catheter port
Expected: Pressure change ≤±4 mmHg for all tests, ±4 mmHg

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

Calibration: Solenoid driver board blood detect circuitry

Verify blood detect sensor voltage and configure gain/offset settings

Ranked causes

1. Blood Detect sensor voltage out of range (occasional)

First check

Measure Blood Detect voltage

Test point: TP2 (+) and TP5 (-) on Solenoid Driver board P/N 0670-00-0639
Expected: 2.5 to 5 volts, ±1.25 volts
Tools: DVM

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

Display test fails

Base Screen Memory or Window Screen Memory test shows error or displays error location message on display

Ranked causes

1. Display board or interconnecting cable defect (unknown)

First check

Base Screen Memory test

Test point: Display screen top to bottom
Expected: Screen illuminates uniformly and displays 'Base Screen Memory OK' message

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

Drive pneumatics leak detected

Drive pressure readings continue to decrease during calibration indicating pneumatic leak

Ranked causes

1. Leak in drive pneumatics (occasional)

First check

Run K6, K6A, K7, K8 Leak Test

Test point: Drive pneumatics circuit
Expected: Test #1 ±45 mmHg, Test #2 ±65 mmHg, Test #3 ±20 mmHg

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

Fiber Optic lamp PWM, output, or signal parameters out of spec caution

Fiber Optic Test fails PWM, Lamps Output, or Lamps Output/PWM criteria; lamp function degraded

Ranked causes

1. Fiber Optic lamp degradation or failure (common)

First check

Fiber Optic Test - PWM parameter

Test point: Sensor Module lamp PWM control signal
Expected: PWM value 1–69 PWM units, 1–69

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

Helium tank pressure offset out of specification

Helium pressure circuit calibration offset exceeds acceptable limits when tank removed from pump

Ranked causes

1. Helium transducer or circuit calibration drift (occasional)

First check

Helium Tank Calibration test

Test point: Helium pressure circuit offset
Expected: Offset within specification limits

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

K6/K6A/K7/K8 drive section leak patient safety

Pressure loss or gain detected in drive pneumatics during 60-second hold periods at atmosphere, 8 PSI, and vacuum

Ranked causes

1. Leak in drive pneumatic circuit (common)

First check

K6/K6A/K7/K8 Leak Test - Test #1 (60 sec at atmosphere)

Test point: Drive pneumatic transducer X2
Expected: Differential pressure ≤ ±45 mmHg, ±45 mmHg

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

Keypad or switch does not respond

Key presses not registered on Key Depressed display area or keypad LEDs not lighting

Ranked causes

1. Front panel switch or keypad wiring defect (unknown)

First check

Verify key response and LED illumination

Test point: Front panel keys and associated LEDs
Expected: Each key press displays in Key Depressed area and lights corresponding LED(s)

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

Modem test fails

Modem loopback test shows errors or FAIL status on modem test screen

Ranked causes

1. Internal modem defect or configuration mismatch (unknown)

First check

Modem loopback test

Test point: Internal modem communication
Expected: Status shows TEST PASSED and error count is 000

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

Perform autofill calibration test patient safety

Technician runs automated autofill calibration via Functional Tests menu to verify fill volume accuracy and transducer calibration; system measures transducer offset differences from drive transducer baseline.

Ranked causes

1. Autofill volume out of calibration (occasional)

First check

Check transducer offset values after autofill calibration

Test point: Pneumatic System Test screen, pressure readings in brackets
Expected: Shuttle and atmospheric transducers offset within specification; helium transducer offset (xx) indicates out of spec

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

RS-232 port communication error

Transmitted and received data do not match or data missing on RS-232 test

Ranked causes

1. RS-232 connector pins not jumped or defective serial communication channel (common)

First check

Jump RS-232 transmit and receive pins

Test point: Rear panel RS-232 connector pins 2 and 3
Expected: Pins 2 and 3 electrically connected via bus wire

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

Error codes

Code	Meaning	Trigger	Severity
`01`	RTOS and virtual device manager faults	Real-time operating system or virtual device manager error occurs	warning
`02`	Set Model Type Fault	Model type configuration error detected	critical
`1`	Power up Watch-dog test failed	During power-up self-test	critical
`10`	Helium volume cylinder did not empty (close S2) within 10 seconds at beginning of Autofill	Fault occurs during initial Autofill phase when S2 sensor should close	error
`117`	Front End A/D reference failure at power up	During analog-to-digital converter test	error
`118`	Front End HC11 cannot communicate with Main HC11	During inter-CPU handshake	critical
`119`	Front End CPU failure	During Front End operation	critical
`120`	Monitor/Keypad CPU failure	During Monitor/Keypad operation	critical
`122`	Keypad did not respond to poll	During keypad polling	error
`123`	Invalid error condition	During error state detection	unknown
`140`	Helium volume cylinder did not empty (close S2) within 10 seconds following dead volume calculation	Fault occurs after dead volume calculation when S2 should close	error
`150`	Helium volume cylinder did not empty (close S2) within 10 seconds following dead volume calculation with no IAB	Fault occurs after dead volume when no IAB connected	error
`2`	68020 CPU not functioning correctly	During boot sequence	critical
`20`	Initial IABP purge failure, could not empty Safety Disk	Fault occurs at beginning of Autofill when purging Safety Disk	error
`21`	ROM checksum test failed	During power-up self-test	critical
`22`	System RAM address test failed	During memory test	critical
`23`	RAM walking ones test failed	During memory pattern test	critical
`24`	RAM pattern test failed	During memory diagnostic	critical
`25`	UART communication loop back test failed	During serial port self-test	error
`26`	NMI test failed	During interrupt test	error
`27`	Watch-dog test failed	During watchdog timer test	error
`28`	Start up test failure	During initial power-up	critical
`29`	IABP/Comm HC11 software flip-flop error at power up	During boot sequence	error
`3`	Boot checksum incorrect	During power-up verification	critical
`30`	Helium volume cylinder did not move (open S2 empty sensor) within 5 seconds	Fault occurs when S2 empty sensor should open to release pressure	error
`30`	Service diagnostics ROM failure	During diagnostics self-test	error
`32`	Power-up RAM test failure	During memory self-test	critical
`33`	NMI detected during power up	During startup sequence	error
`33`	Bad system NVRAM info record fault	Non-volatile RAM contains corrupt or invalid system information	error
`34`	No communication with 68020	During CPU handshake	critical
`35`	No communication with 6809	During CPU handshake	critical
`36`	Software trap detected during power up	During boot sequence	critical
`37`	Soft interrupt during power up	During startup	error
`38`	Prolonged inflation test failure	During pressure test	error
`39`	Comm HC11 failed to interrupt	During interrupt sequence	error
`4`	Power up RAM test failed	During memory self-test	critical
`40`	IABP 6809 Datasette not compatible with 68020 Datasette	During data verification	error
`40`	Software error or blood detected during delay state	Fault occurs when system does not advance from delay state	error
`41`	Monitor 68020 Datasette not compatible with 6809 Datasette	During data verification	error
`42`	IABP 6809 Datasette not compatible with Front End HC11	During data verification	error
`43`	IABP 6809 Datasette not compatible with Comm HC11	During data verification	error
`44`	IABP 6809 Datasette not compatible with Monitor/Keypad HC11	During data verification	error
`45`	System failure	General system failure condition detected	critical
`46`	Monitor 68020 Datasette not compatible with Front End HC11	During data verification	error
`47`	Monitor 68020 Datasette not compatible with Comm HC11	During data verification	error
`48`	Monitor 68020 Datasette not compatible with Monitor/Keypad HC11	During data verification	error
`4E0`	Leak detected during purge with blood back indication	Leak or blood detected after reaching first surveillance level with leak prefix	error
`5`	68020 code transfer to DRAM did not verify correctly	During boot sequence	critical
`50`	Motor speed out of specification	During motor speed test	error
`50`	Helium volume cylinder did not reach full sensor (close S1) within 10 seconds during Sensor IAB calibration	Fault occurs during calibration phase when cylinder should reach S1 full position	error
`51`	Adjusted motor speed out of specification	After motor speed adjustment	error
`52`	Drive transducer offset failure	During transducer calibration	warning
`53`	Shuttle transducer offset failure	During transducer calibration	warning
`54`	ATM transducer calibration failure	During transducer calibration	warning
`55`	68020/6809 Sync failure entering system configuration mode	During configuration mode entry	error
`56`	Excessive drive pressure	During pressure monitoring	warning
`57`	Safety Vent test failed	During safety vent verification	warning
`57`	Autofill failure with detailed failure mode in last two or three digits	Autofill process fails at various stages; specific cause indicated by fault code suffix	error
`58`	Power-up Vent test failed	During power-up self-test	warning
`6`	Interrupt fault, 68020 exception condition during boot up	During power-up sequence	critical
`60`	Final IABP purge failure, could not reach 150 mmHg absolute pressure within 14 seconds	Fault occurs during final purge phase of Autofill when target pressure not reached	error
`61`	Comm HC11 ROM test failed	During ROM self-test	error
`62`	Comm HC11 RAM address test failed	During memory test	error
`63`	Comm HC11 RAM walking ones test failed	During memory pattern test	error
`64`	Comm HC11 RAM pattern test failed	During memory diagnostic	error
`65`	Comm HC11 shared RAM address test failed	During shared memory test	error
`66`	Comm HC11 shared RAM walking ones test failed	During shared memory pattern test	error
`67`	Comm HC11 shared RAM pattern test failed	During shared memory diagnostic	error
`68`	Comm HC11 Watch-dog test failed	During watchdog timer test	error
`69`	Comm HC11 power up RAM test failure	During power-up memory test	critical
`70`	IAB tubing and Safety Disk did not fill with helium from volume cylinder within 10 seconds	Fault occurs when filling phase does not complete in time	error
`70`	Comm HC11 main failure	During Comm HC11 operation	critical
`820`	Autofill failure with blood detected optically	Blood detected by optical blood detection sensor during Autofill	error
`90`	Transducer atmospheric calibration failure	Fault occurs at end of Autofill cycle when transducers cannot zero	error
`91`	Front End HC11 ROM test failed	During ROM self-test	error
`92`	Front End HC11 RAM address test failed	During memory test	error
`93`	Front End HC11 RAM walking ones test failed	During memory pattern test	error
`94`	Front End HC11 RAM pattern test failed	During memory diagnostic	error
`98`	Front End HC11 Watch-dog test failed	During watchdog timer test	error
`B0`	Unexpected shuttle gas pressure rise detected during IAB purge cycle	Fault occurs when shuttle pressure increases unexpectedly during purge	warning
`C0`	14 second IAB purge time-out at initial purge level prior to Safety Vent test	Fault occurs when initial purge phase exceeds 14 seconds	error
`CE0`	14 second IAB purge time-out with blood back detected from shuttle pressure	Purge fails to complete within 14 seconds and blood is detected	error
`D0`	Failure to reach first surveillance purge level in 1 second or 14 second IABP purge time-out	Fault occurs when purge level not reached in time or exceeds time limit	error
`E0`	Leak or blood detected after reaching first surveillance purge level	Fault occurs when leak or blood detected during purge phase	warning
`F0`	Leak or blood detected after reaching second surveillance purge level	Fault occurs when leak or blood detected in later purge phase	warning
`Maintenance Required Code 5`	Transducer calibration out of specification; specifically helium pressure transducer (X4) offset error	Helium transducer offset (xx) displayed on Pneumatic System Test screen after autofill calibration	warning

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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.