Mobile C-arm X-ray systems · Series 9600 family

GE Healthcare 9600: troubleshooting and error codes

The ServiceForge knowledge base holds 75 documented symptoms for the GE Healthcare 9600, with 118 ranked causes, 155 diagnostic checks with test points and expected values, and 253 error codes. Each symptom below shows its causes and the first check; the rest is one connection away. Connect ServiceForge to your AI

Symptoms

Calibration: Beam alignment radiation

Multi-step procedure to align X-ray beam, secondary collimator, variable collimator, and collimator iris with image intensifier electronics center using bore sight tool and beam alignment patterns

Ranked causes

1. Initial setup and bore sight tool installation (common)
2. Secondary collimator misalignment (occasional)
3. Image intensifier electronic center offset (common)
4. Variable collimator centering misalignment (occasional)
5. Collimator iris sizing requires calibration after Image Function PCB replacement (common)
6. Beam alignment verification with film (common)
7. Camera iris calibration long method baseline (common)
8. Camera iris calibration short method setup (common)
9. Adjust iris open stop short method (common)

First check

Bore sight tool centered in image

Test point: Monitor display
Expected: Bore sight tool centered on pattern

18 more checks with pass and fail actions, 14 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Stator motor does not start high voltage

Stator fails to initialize during boot sequence; no motor rotation detected; nineteen arrows not displayed on Control Panel

Ranked causes

1. STAT_RUN signal not going low; transistor Q3 or buffer U45 pins 15/5 failure (occasional)
2. STATSTRT signal not going low; transistor Q7 or buffer U45 pins 13/7 failure (occasional)
3. Relay K1 or K2 not energizing on Power Motor Relay PCB (occasional)
4. Circuit breaker CB2 open; 115VAC not reaching stator motor (occasional)
5. Stator motor winding open or shorted (rare)

First check

Verify PIO U38 pin 20 output during stator start

Test point: Analog Interface PCB PIO U38-20
Expected: High voltage output (logic high)
Tools: DMM, oscilloscope

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

Stator NOT ON error displayed on Control Panel patient safety

Error message 'STATOR NOT ON' appears on display; stator current not detected; X-rays and motor movement blocked

Ranked causes

1. Stator motor not drawing current; no current flow through current sense transformer T1 (common)
2. Current sense transformer T1 secondary open; induced current not detected (occasional)
3. Operational amplifier U19 or clipping circuit (diodes CR5-7, resistor R15, capacitor C17) failure (occasional)
4. Inverter U24 pins 5 & 4 failure; signal not inverted to logic low (occasional)
5. X-ray tube thermal cutoff switch open; stator disabled by overtemperature (occasional)

First check

Verify stator motor receives 115VAC during start phase (first 2 seconds)

Test point: Stator motor terminal leads at X-ray tube assembly
Expected: 115VAC applied
Tools: DMM, oscilloscope

8 more checks with pass and fail actions, 13 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

PRE-CHARGE FAIL displayed during boot high voltage

Control Panel display shows PRE-CHARGE FAIL message; system boot does not complete; fatal error that prevents system startup

Ranked causes

1. +200VSNS signal does not reach 4.5 VDC (pre-charge capacitors do not reach 185 VDC) (common)
2. Fuse F3 on Generator Driver PCB is open (occasional)
3. Voltage divider R10/R11 malfunction or open circuit (occasional)
4. Analog Interface PCB A/D Mux U3-8 or signal path failure (occasional)

First check

Measure voltage across pre-charge capacitors C2 & C3

Test point: Generator Controller Assembly capacitors C2 & C3
Expected: approximately 185 VDC during boot sequence, ±10 VDC
Tools: Voltmeter rated for 221 VDC

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

Battery charger not receiving AC input high voltage

Battery packs not charging. Yellow/red bargraph indicators DS1 and DS2 inactive.

Ranked causes

1. Circuit breaker CB2 or CB3 open on Power/Signal Interface PCB (common)
2. Line filter LF1 or LF3 failed (occasional)
3. Bridge rectifier CR1 failed (occasional)

First check

Check CB2 and CB3 breaker status

Test point: Power/Signal Interface PCB CB2, CB3
Expected: Both in normal position

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

kV output does not match desired setting radiation

Measured X-ray output kilovoltage does not achieve or maintain desired kV level during fluoroscopy

Ranked causes

1. kV control voltage out of range or incorrect (common)
2. kV drive signal duty cycle incorrect (common)
3. kV sense signal not proportional to output (occasional)

First check

Select 80 kV in MANUAL FLUORO mode without making X-rays

Test point: U20-7 X-ray Regulator PCB
Expected: Approximately -6 VDC (-75 mV/kV) on amp U20-7 of X-ray Regulator PCB, ±1 V
Tools: Multimeter, X-ray Regulator access

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Stator motor runs but does not reach 3500 RPM speed high voltage

Stator motor spins during run phase but speed is below nominal 3500 RPM; inadequate voltage supplied after two-second start sequence

Ranked causes

1. Stator transformer T3 not stepping down 115VAC to 40VAC (common)
2. Relay K2 contacts stuck open or corroded in run phase (occasional)
3. Current sense transformer T1 inserting excessive impedance (occasional)

First check

Measure stator transformer T3 primary voltage during run phase

Test point: Stator Transformer T3 primary winding (after start sequence)
Expected: 115VAC, ±5%
Tools: DMM, oscilloscope

5 more checks with pass and fail actions, 6 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

AC power not reaching C-Arm power systems high voltage

Battery charger inactive, power supplies not energizing. AC indicators (DS2 green lamp) not lit.

Ranked causes

1. Circuit breaker CB2 open or tripped (common)
2. Interconnect cable disconnected or failed (common)

First check

Verify CB2 breaker status

Test point: CB2 on Power Control PCB
Expected: Reset only breaker in normal position

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Battery charger overvoltage shutdown active patient safety

Battery not charging. Red bargraph indicator (last segment) lit continuously. System cannot boost charge voltage.

Ranked causes

1. Output voltage exceeded 250 VDC (common)
2. Voltage feedback potentiometer R32 misadjusted or failed (occasional)

First check

Measure charger output voltage at point before shutdown

Test point: Battery Charger PCB output at fuse F1 location on Generator Controller
Expected: Should not exceed 250 VDC; typical 225–235 VDC in normal mode, ±10 VDC
Tools: DMM DC setting; HIGH IMPEDANCE probe only

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Battery voltage low during exposure (less than 160V)

Bargraph or DMM measurement shows battery voltage drops below 160V during X-ray exposure, indicating inadequate power delivery.

Ranked causes

1. Weak or failing battery packs (common)
2. Battery Charger PCB fault (occasional)

First check

Select FILM mode and perform test exposure

Test point: Exposure result and bargraph display
Expected: No 'X-ray Overtime' message; no kV or mA errors; red LED bargraph shows 160-170 volts
Tools: System controls, DMM (optional)

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Calibration: SRAM Hot-Byte configuration

Hot-Byte is a control byte at address 0000 in EEPROM.DAT file that determines direction of data transfer between EEPROM U58 and SRAM card during boot-up; value 5A (0) is normal, A5 (1) forces SRAM→EEPROM overwrite for recovery.

Ranked causes

1. Hot-Byte = 0 (5A): normal operation, EEPROM→SRAM or blank EEPROM→SRAM (common)
2. Hot-Byte = 1 (A5): forced SRAM→EEPROM for EEPROM recovery (rare)

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

Calibration: Wig Wag brake fails to lock forward mechanics caution

Brake handle turns without engaging; forward mechanics move when brake should be locked

Ranked causes

1. Actuator screw insufficiently tightened (common)
2. Worn or damaged washers or brake pad (occasional)

First check

Attempt brake engagement after actuator screw adjustment

Test point: Wig Wag brake handle
Expected: Brake handle engages and locks; forward mechanics do not move when brake is fully engaged

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Charger high charge mode not activating patient safety

Battery charging slow when KVP above 30. Yellow bargraph DS2 indicates low charge current even during X-ray operation.

Ranked causes

1. KVP signal HICHGMOD not received from X-ray Regulator PCB (occasional)
2. Comparator U5 or feedback divider circuit (R9, R10, R26) failed (occasional)

First check

Measure HICHGMOD signal voltage during high KVP exposure

Test point: Battery Charger PCB U5 input from X-ray Regulator PCB
Expected: Logic high (approx +12V) when KVP >30
Tools: DMM DC or oscilloscope

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Collimator iris motor stuck

Iris motor has not reached selected destination; may be mechanical jam or slow motor operation

Ranked causes

1. Motor jam or excessive friction (common)
2. Motor moving too slowly (occasional)

Control Panel diagnostic LED display not showing key codes caution

Diagnostic LED array (DS1) on Control Panel PCB not displaying row/column codes when keys pressed

Ranked causes

1. Diagnostic jumper not installed or loose on Control Panel PCB E1 pins 7-8 (common)
2. LED driver circuit failure or LED array defective (occasional)

First check

Verify diagnostic jumper installed on E1 pins 7-8

Test point: Control Panel PCB header E1
Expected: Shorting jumper present on pins 7-8
Tools: Visual inspection, jumper

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Image Function PCB reset

Image Function PCB has undergone unexpected reset; watchdog timer or power monitor triggered reset

Ranked causes

1. Watchdog timer timeout (U8) (occasional)
2. Power supply glitch or dropout (occasional)

K10 relay not switching AC power to supply rails caution

System in standby; pressing keyswitch does not activate power supplies or motor circuits.

Ranked causes

1. KEY_PWR +12V signal missing from keyswitch (common)
2. K10 relay coil open or shorted (occasional)

First check

Verify +12V KEY_PWR signal at K10 relay coil

Test point: Power/Motor Relay PCB K10 relay coil input
Expected: +12V when keyswitch ON, ±0.5 V
Tools: DMM DC setting

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

Overvoltage Fault displayed on control panel high voltage

System displays OVERVOLTAGE FAULT message and shuts down, preventing X-rays

Ranked causes

1. High voltage exceeds 140 kVp (occasional)
2. Disconnected TAP1 or TAP2 signal lines on P4 connector (occasional)

First check

Verify P4 connector TAP1 and TAP2 signal lines are connected

Test point: P4-4 (TAP2), P4-5 (TAP1) on X-ray Regulator PCB
Expected: Signals connected and present
Tools: Visual inspection, oscilloscope

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

Peripherals or subsystems not powered caution

Hard drives, floppy drive, control panel, or optional Lenzar camera do not function

Ranked causes

1. Circuit breaker tripped or open (common)
2. +12V or +5V output rail too low (occasional)

First check

Inspect circuit breaker status for failed subsystem

Test point: DC Power Distribution PCB (CB1–CB9 per subsystem)
Expected: Breaker lever in up position (not tripped)

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Power supply PS1 output voltage out of specification caution

Technique Processor or Control Panel circuits not operating. System may not boot or intermittent failures.

Ranked causes

1. +5V output drifted above tolerance (occasional)
2. +15V or -15V output drifted (occasional)

First check

Measure +5V output

Test point: Technique Processor PCB, C9
Expected: +5.05 VDC ±0.05 VDC, ±0.05 VDC
Tools: DMM DC setting, high impedance probe

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System displays 'CHARGER FAILED'

Message indicates battery charger is not functioning properly during normal operation.

Ranked causes

1. Battery voltage below 225V and charger output current below 1.0 Amp (common)
2. Weak battery packs (occasional)

First check

Measure charging voltage at Battery Charger PCB

Test point: J1-1 (S/N 69-0001-69-1000) or J5-1 (S/N 69-1001+)
Expected: 225 VDC
Tools: Digital Multimeter

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System displays 'RECHARGE NEEDED - ALLOW 24 HOURS'

Message appears during boot-up after 6 months of inactivity without power.

Ranked causes

1. System not powered on for 6 months (common)
2. Backup generator software installed (occasional)

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

System displays 'WARM-UP NEEDED - ALLOW 4 HOURS'

Message appears during boot-up after 2 months of inactivity without power.

Ranked causes

1. System not powered on for 2 months (common)
2. Backup generator software installed (occasional)

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

System memory test failure

Memory test stops at error with address of bad memory location displayed on screen

Ranked causes

1. Base or Extended memory module failure or defective RAM chip (rare)
2. Memory module unseated or loose connection (common)

First check

Run System Memory Tests from diagnostics menu

Test point: AT Base Memory and Extended Memory
Expected: PASSED for both Base and Extended memory
Tools: Diagnostic software, system memory modules

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Workstation does not power on or boots intermittently high voltage

System fails to start or repeatedly resets during boot sequence; AT Motherboard may lock up

Ranked causes

1. +5V output from PS1 falls below +4.65V (common)
2. U1 voltage monitor IC failure (occasional)

First check

Measure +5V output at test point

Test point: TP27 (GND reference TP25)
Expected: +5.0 VDC ±0.75 VDC, ±0.75 VDC
Tools: Digital multimeter

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

Bad iris calibration

Potentiometer values at maximum and minimum iris positions do not match EEPROM stored values during boot-up

Ranked causes

1. Calibration values corrupted or iris mechanical shift (occasional)

Bad iris potentiometer

Erroneous or no potentiometer values sensed during system boot-up

Ranked causes

1. Potentiometer failure or open circuit (common)

Battery Charger high charge mode evaluation high voltage

Procedure to verify charger operates at high charge voltage during fluoro exposure.

Ranked causes

1. Battery Charger verification during high-current demand (rare)

First check

Remove covers and connect DMM to batteries

Test point: Battery terminals
Expected: DC voltage reading
Tools: Digital Multimeter set to DC

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Battery Charger normal charge mode evaluation high voltage

Procedure to verify charger is operating at normal charge voltage and current levels.

Ranked causes

1. Battery Charger verification during routine maintenance (rare)

First check

Remove covers and connect DMM to batteries

Test point: Battery terminals
Expected: DC voltage reading
Tools: Digital Multimeter set to DC

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Battery charger under-voltage protection active

Charger disabled when battery discharged. No trickle charge restoring battery voltage.

Ranked causes

1. Battery discharged below 160 VDC triggering under-voltage lockout (common)

First check

Measure battery voltage at charger output

Test point: Battery pack terminal voltage at charger output connector
Expected: Should be >160 VDC to enable fast charging; <160 VDC triggers trickle mode
Tools: DMM DC setting, high-impedance probe

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

Calibration: ABS Index File parameters

Edit ABS Index File records including VLI Offset and Pulse VLI Offset values for different dose tables and scan rates

Ranked causes

1. ABS table parameter adjustment for dose optimization (occasional)

First check

Verify VLI Offset values are not modified

Test point: ABS Index Table records (I. Edit VLI Ofst)
Expected: Factory set values: Standard 5R/10R=0, Chest 5R/10R=-100, Extremities 5R/10R=50

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

Calibration: Battery Charger Output Voltage high voltage

Procedure to adjust charger output voltage to 220-225 VDC with bargraph indicator calibration.

Ranked causes

1. Charger output voltage calibration required (rare)

First check

Connect DVM to measure output voltage

Test point: J1-1 to chassis ground
Expected: 220 Volts initial measurement
Tools: DVM set to DC volts

4 more checks with pass and fail actions are in ServiceForge. Connect ServiceForge to your AI

Calibration: Collimator field sizes radiation

Iris collimator field sizes require calibration and storage in EEPROM on Image Function PCB

Ranked causes

1. Collimator calibration procedure required (common)

First check

Access Mainframe Menu via Workstation

Test point: Workstation setup
Expected: Mainframe Menu appears on left monitor

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

Calibration: Entrance exposure verification for 5R systems radiation

Verify and adjust entrance exposure dose rate output to ensure FDA compliance (maximum 4.63 R/min for systems S/N 69-0001 to 69-1160 manufactured before May 19, 1995)

Ranked causes

1. mA Limit File requires adjustment to maintain 4.63 R/min maximum output (common)

First check

Confirm system ABS tables are correct for 5R configuration

Test point: Mainframe control panel ABS SELECT button
Expected: Four ABS tables visible: Standard for Domestic 5R, Low dose for domestic, Chest 5R, Extremities 5R

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

Calibration: Generator parameters and personality file

System Configuration menu creates and updates personality file with generator settings including boost, inhibit, beeper, video levels, and ABS tables

Ranked causes

1. System Configuration setup during installation or reconfiguration (common)

First check

Verify boost availability setting

Test point: Option A in System Configuration menu
Expected: Y (Yes)

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

Calibration: Line pair resolution radiation

Verify spatial resolution of image on developed film at three field sizes per specification table

Ranked causes

1. Line pair resolution measurement required after beam alignment (common)

First check

NORMAL field line pair resolution at 60 Hz

Test point: Film
Expected: 1.4 lp/mm

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

Calibration: SRAM card backup to floppy after generator calibration

After generator calibration is performed, new calibration data must be copied from SRAM card on Technique Processor PCB back to 3.5-inch floppy backup disk to preserve calibration in case of future SRAM failure.

Ranked causes

1. Generator calibration completed; backup required (common)

First check

Boot computer with PCMCIA software

Test point: PCMCIA port
Expected: Software recognizes PCMCIA port

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

Calibration: SRAM card restoration from floppy backup

SRAM card on Technique Processor PCB has failed or been corrupted; files must be restored from 3.5-inch floppy backup disk to preserve system-unique calibration and serial number data.

Ranked causes

1. SRAM card corrupted or failed (occasional)

First check

Boot computer and verify PCMCIA port recognized by software

Test point: PCMCIA port
Expected: Computer recognizes PCMCIA port, software loaded

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

Collimator iris jitter

Iris size drifts away from selected position requiring repeated corrections by Image Function PCB

Ranked causes

1. Unstable iris motor or potentiometer feedback (unknown)

Collimator iris too large

Collimator iris exceeds maximum size for selected field; detected by Image Function PCB comparing potentiometer value with stored calibration

Ranked causes

1. Iris potentiometer value exceeds stored calibration value (common)

Collimator replacement caution

Procedure to remove and install collimator assembly including cover and alignment bracket

Ranked causes

1. Collimator failure or misalignment requiring replacement (unknown)

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

Diagnostic tone not produced when keys pressed

Keys do not produce audible tones during Front Panel Test or Control Panel diagnostics

Ranked causes

1. Audio amplifier failure or speaker disconnected (occasional)

First check

Press numbered key (e.g., key 1) and listen for tone

Test point: Control Panel speaker output
Expected: Audible tone at frequency matching key (e.g., key 1 = 100 Hz)
Tools: Oscilloscope or audio frequency meter (optional)

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

Filament fault error high voltage

System detects no voltage on MA MEASURED line with X-ray switch engaged, indicating little or no tube current; fatal error causing system shutdown

Ranked causes

1. No tube current present with X-ray switch engaged (occasional)

First check

Measure voltage on MA MEASURED line during X-ray exposure

Test point: MA MEASURED line
Expected: Voltage present indicating tube current flow

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

Front Panel keys not responding in diagnostics

Keys pressed on front panel do not produce expected keycode or tone in diagnostic mode

Ranked causes

1. Front Panel key matrix failure or key contact issue (common)

First check

Press each key on Front Panel and verify keycode output

Test point: Front Panel keys
Expected: Different hex keycode for each key pressed
Tools: Workstation with diagnostic software

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

Front Panel LEDs not illuminating in diagnostics

LEDs on front panel do not light up when tested or do not indicate proper key presses

Ranked causes

1. LED driver failure or LED burnout (occasional)

First check

Activate each LED using cursor keys and verify illumination

Test point: Front Panel and TrackPad Panel LEDs
Expected: Each LED lights sequentially; LED value changes on display
Tools: Workstation diagnostic software

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

Fuse F1 open or blown on PS1 high voltage

Power supply PS1 does not deliver any output; main fuse is charred or broken

Ranked causes

1. Internal PS1 short circuit or component failure (occasional)

First check

Inspect main fuse F1 on PS1

Test point: F1 on power supply PS1
Expected: Fuse intact, no charring or breaks

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

HIGH KV AND LOW FLUORO KV error message

Detected kV and selected technique kV do not agree within 20%; system shuts down for 2 seconds after exposure

Ranked causes

1. KV measurement circuit error or HV regulation fault (unknown)

High mA warning

Actual mA (MA MEASURED) exceeds selected mA by more than 20%; non-fatal error causing 2-second shutdown

Ranked causes

1. Actual tube current exceeds selected value by >20% (occasional)

First check

Compare actual mA (MA MEASURED) to selected mA value

Test point: Technique Processor software display
Expected: Actual mA within 20% of selected mA, ±20%

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

Image Function PCB timeout

No serial I/O response received from Image Function PCB

Ranked causes

1. PCB not responding or communication link failure (common)

Image Intensifier removal high voltage

Procedure to remove Image Intensifier tube and power supply from C-arm; includes high-voltage and safety precautions

Ranked causes

1. Image Intensifier failure requiring replacement (unknown)

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

Image Processor memory test failure

Image Processor test halts with error; specific memory region fails (Left Filter RAM, Right Filter RAM, Bit Planes, or LUT)

Ranked causes

1. Image Processor memory module defective or unplugged (rare)

First check

Run Image Processor Tests from diagnostics menu

Test point: Image Memory, Filter RAM, Bit Planes, LUT modules
Expected: PASSED for Image Memory, Left/Right Filter RAM, Bit Planes, LUT
Tools: Diagnostic software

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

Infrared transmitter key not responding in diagnostics

Infrared remote control keys do not produce keycode output in diagnostic mode

Ranked causes

1. IR transmitter battery dead or IR receiver module failure (common)

First check

Press each IR transmitter key and verify keycode output

Test point: IR transmitter
Expected: Different keycode displayed for each key pressed
Tools: IR transmitter, diagnostic software

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

KV ON IN ERROR message displayed patient safety

System displays error and shuts down when no X-ray switch is engaged but high voltage is detected on KVP MEASURED line

Ranked causes

1. Unintended high voltage present without X-ray switch command (rare)

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

Level or Window value not adjusting in diagnostics

Level and Window control values remain static or do not change when controls adjusted

Ranked causes

1. Level or Window potentiometer mechanical wear or loose connection (occasional)

First check

Adjust Level control and verify value output

Test point: Level control potentiometer
Expected: Level value changes 0–80
Tools: Diagnostic software

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Low fluoroscopy mA

Actual mA (MA MEASURED) is less than selected mA by more than 20%; non-fatal error causing 2-second shutdown

Ranked causes

1. Actual tube current falls below selected value by >20% (occasional)

First check

Compare actual mA (MA MEASURED) to selected mA value

Test point: Technique Processor software display
Expected: Actual mA within 20% of selected mA, ±20%

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

mA on in error high voltage

System detects tube current present on MA MEASURED line without X-ray switch engaged; fatal error causing system shutdown

Ranked causes

1. Tube current flowing without X-ray switch command (rare)

First check

Verify X-ray switch is disengaged

Test point: X-ray switch input
Expected: No voltage on MA MEASURED line when switch is not engaged

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

Monitors not receiving power high voltage

Left and right monitors display no power indicator or backlight

Ranked causes

1. PS4 +24V output below specification (common)

First check

Measure +24V at monitor input

Test point: Monitor circuit board J6 (black/GND to yellow/+24V)
Expected: +24 VDC ±1V, ±1V
Tools: Digital multimeter

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

Motion Artifact Reduction control not toggling

MARS (Motion Artifact Reduction) feature cannot be switched on or off

Ranked causes

1. Averaging mode not available in current X-ray mode (common)

First check

Verify current X-ray mode

Test point: X-ray mode indicator
Expected: System in Continuous X-Ray mode (not Pulse mode)
Tools: System software interface

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

No mA limits message

System displays 'NO MA LIMITS' message indicating MALIMIT.DAT file is missing from SRAM disk

Ranked causes

1. MALIMIT.DAT file not copied to SRAM disk (common)

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

Overload Fault displayed on control panel high voltage

System displays OVERLOAD FAULT message and shuts down, preventing X-rays

Ranked causes

1. Primary winding current exceeds 200 Amps (occasional)

First check

Measure integrated current voltage on TP1

Test point: TP1 on X-ray Regulator PCB
Expected: Voltage remains below 1.6 VDC (representing max 200 Amps primary current), less than 1.6 VDC
Tools: Digital multimeter

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

More symptoms

Power supply PS2 (+24V) output out of specification
RAM test failure on Control Panel PCB
Regulator fail error
Saturation Fault displayed on control panel
Specific key not producing correct diagnostic code
SRAM lithium battery replacement
Stator motor shuts down prematurely; power loss after five minutes
System displays '50% CHARGE' and film exposures suspended
System displays '70% CHARGE'
System displays 'BATTERY DISCONNECTED'
TrackPad quadrant pressure sensor malfunction in diagnostics
TrackPad superkey switch not responding in diagnostics
TrackPad X/Y axis values out of range in diagnostics
Verify ABS table configuration for 5R systems
X-ray exposure time exceeded

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

Error codes

Code	Meaning	Trigger	Severity
`01`	English language selected	During boot sequence	info
`05`	Footswitch stuck	X-ray ON switch, footswitch, or handswitch sensed closed during boot	critical
`06`	Precharge fail	System has not completed precharge cycle; B+ voltage not detected on Generator Driver PCB	critical
`07`	HV inverter on	High voltage generator sensed on with no X-ray command initiated	critical
`08`	30 minute time marker	Time marker during operation	info
`09`	Checksum BIOS ROM	Boot sequence test on Technique Processor PCB	critical
`09`	Main program loaded	During boot sequence	info
`0A`	Initialization complete	After hardware initialization completes	info
`0A`	Initialize Video Interface	Video interface initialization during boot	critical
`0B`	Image Function PCB reset	Image Function PCB loses communication with Technique Processor and watchdog timer resets IF PCB	critical
`0C`	AD channel 0 failed	kVp detected during boot-up without X-ray command initiated	critical
`0D`	AD channel 1 failed	mA detected during boot-up without X-ray command initiated	critical
`0E`	AD channel 8 failed	Voltage sensed on redundant kV sense circuitry in HV tank during boot-up	critical
`0E`	Test CMOS Shutdown Byte	CMOS shutdown byte validation during boot	error
`0F`	Test Extended CMOS (If Present)	Extended CMOS validation during boot if module installed	error
`0F`	AD channel 11 failed	Excessive current sensed from Battery Charger PCB during boot-up	critical
`10`	MAIN.TXT file read error	Error reading MAIN.TXT file from SRAM card during boot-up	critical
`100`	Disk read error		error
`101`	Disk write error		error
`103`	File not open		error
`104`	File not open for input		error
`105`	File not open for output		error
`11`	Fluoroscopy X-ray	Last function performed was fluoroscopy with X-ray	info
`12`	Press any key	During system operation	info
`13`	Fluoroscopy X-ray off	Fluoroscopy exposure ended	info
`15`	Invalid drive number		error
`15`	Test 1st 64K of System Memory	First 64KB system memory test during boot	critical
`15`	Fluoroscopy boost mode	Fluoroscopy exposure in boost mode	info
`152`	Drive not ready		error
`153`	Unknown command		error
`154`	CRC error in data		error
`156`	Disk seek error		error
`158`	Sector not found		error
`159`	Printer out of paper		warning
`16`	Set up Interrupt Vector Table	Interrupt vector table setup during boot	critical
`16`	Fluoroscopy to film transition	Operator initiated transition from fluoroscopy to film mode	info
`160`	Device write fault		error
`161`	Device read fault		error
`162`	Hardware failure		critical
`17`	Collimator stuck	Collimator iris cannot open or close	warning
`17`	Set Up Video I/O Operations	Video I/O operations setup during boot	error
`18`	Test Video Memory	Video memory test during boot (when EGA/VGA not found)	error
`18`	Iris jitter	Collimator cannot maintain specified field size	warning
`19`	Standby to film transition	Operator initiated transition from standby to film mode	info
`1A`	Front panel dead	Communication loss between Control Panel Processor PCB and Technique Processor PCB	critical
`1B`	Test CMOS Battery Level	CMOS battery voltage validation during boot	warning
`1C`	Test CMOS Checksum	CMOS checksum validation during boot	error
`1C`	Bad iris potentiometer	Collimator iris potentiometer voltage is incorrect or out of range	critical
`1D`	Bad iris calibration	Collimator iris calibration data in EEPROM on Image Function PCB is not valid	critical
`1D`	Set Configuration From CMOS	Configuration load from CMOS during boot	error
`1E`	Sizing System Memory and Compare with CMOS	System memory size test and CMOS comparison during boot	error
`1E`	Boost exposure overtime	Boost exposure exceeds preset time limit	warning
`1F`	Test Found System Memory	Full system memory test during boot	critical
`1F`	Housing is warm	Housing temperature reaches approximately 60% of rated heat capacity	info
`2`	File not found		error
`20`	Housing is hot	Housing temperature reaches approximately 80% of rated heat capacity	warning
`201`	Range check error		error
`202`	Stack overflow error		error
`203`	Heap overflow error		error
`204`	Invalid pointer operation		error
`21`	Anode is warm	X-ray tube anode reaches approximately 60% of rated heat capacity	info
`22`	Anode is hot	Anode temperature reaches approximately 80% of rated heat capacity	warning
`24`	Housing overheated	Housing temperature reaches 100% of rated value and thermal cutoff switch activates	critical
`25`	Will overheat	Tube anode or housing at 80% of rated heat capacity during film mode	warning
`250-252`	Communication error		error
`253`	Communications error	System does not boot fully; serial communication loss	critical
`254-260`	Communications error		error
`27`	No boost when hot	Anode or housing at 80% of rated heat capacity during boost mode	warning
`28`	Instant-on film prearm timeout	Prearm in FILM mode times out after no X-ray command received	info
`29`	Instant-on film front panel cancel	Prearm in FILM mode terminated from front panel by operator pressing another key	info
`2A`	Keyboard Initialization	Keyboard controller initialization during boot	error
`2B`	No mapping file	Error opening mapping file during boot	critical
`2B`	Diskette Initialization	Diskette drive initialization during boot	warning
`2C`	Serial Port Initialization	Serial port controller initialization during boot	warning
`2D`	Parallel Port Initialization	Parallel port controller initialization during boot	warning
`2D`	Image Function PCB timeout	Image Function PCB hasn't responded to Technique Processor within timeout period	critical
`2E`	Film to fluoroscopy transition	Operator initiated transition from film to fluoroscopy mode	info
`2E`	Hard Disk Initialization	Hard disk drive initialization during boot	error
`2F`	Please wait	Generator loading software during boot	info
`3`	Path not found		error
`31`	Battery disconnected	Batteries not connected or B+ voltage low during early boot-up sequence	critical
`31`	Option ROM Initialization	Option ROM modules initialization during boot	warning
`32`	Standby to fluoroscopy transition	Operator initiated transition from standby to fluoroscopy mode	info
`33`	Standby mode activated	Generator not used for 30 minutes	info
`34`	Standby mode ended	Generator activated after standby condition	info
`35`	Film exposure ended	End of film exposure	info
`36`	X-ray exposure complete	Exposure cycle completed	info
`37`	Released early	X-ray ON switch released before desired mAs achieved during film exposure	warning
`38`	X-ray overtime	Proper mA not achieved for allotted time in FILM mode	warning
`3B`	No option file	OPTIONS.DAT file not found on SRAM card during boot	critical
`3F`	Warning high mA	mA detected higher than allowed range for desired technique	warning
`4`	Too many open files		warning
`40`	Warning low mA	mA detected lower than allowed range for desired technique	warning
`42`	Iris too large	Collimator iris size is incorrect for selected field size	warning
`43`	mA on in error	mA sensed without an X-ray request	critical
`44`	Regulator fail	Filament voltage out of range on mA regulator circuitry	warning
`45`	kV on in error	kVp sensed without an X-ray request	critical
`46`	Stator not on	Anode in X-ray tube sensed not rotating	critical
`47`	Overload fault	Excessive current to high voltage tank sensed by tuned circuit L1, C1 on generator controller assembly	critical
`48`	Saturation fault	Darlington driver transistors Q1 and Q2 on generator controller assembly not fully saturated	critical
`4A`	Interlocks open	+24V generator interlock circuit has been opened	critical
`4C`	No range file	Failure to open Calrange.dat file during boot	critical
`4D`	Over-voltage fault	Excessive kVp sensed in H.V. tank secondary winding after boot-up	critical
`4F`	No MUX data	Cannot access data in MUX.DAT file on SRAM card	critical
`50`	Charger failed	Battery Charger PCB output detected out of range after boot-up	critical
`50% CHARGE`	Battery charge capacity has been depleted to 50% or less of nominal.	Software monitoring of battery state-of-charge calculation.	warning
`50_PCT_CHARGE`	Battery charge at 50 percent	Battery charge drops to 50% of effective charge	warning
`51`	User end	Mainframe Menu access	info
`51`	Invalid function error during SRAM card software load	Technique Processor attempts to load software from SRAM card and encounters invalid function request	critical
`52`	Exit program	Mainframe Menu exit	info
`52`	Address Mark Not Found error during SRAM card read	Technique Processor cannot locate address mark on SRAM card during software load	error
`53`	Write Protect Error during SRAM card access	Technique Processor attempts to write to write-protected SRAM card	error
`54`	Sector Not Found error during SRAM card access	Technique Processor cannot locate requested sector on SRAM card	error
`54`	Loading status	Status Mode is accessed	info
`55`	Diskette Change Line Active during SRAM card operation	Technique Processor detects active diskette change signal from card interface	warning
`56`	DMA Overrun error during SRAM card data transfer	Direct Memory Access controller overruns during high-speed data transfer from SRAM card	error
`56`	No mA limits	mA Limit file missing from SRAM card	critical
`57`	DMA Boundary Error during SRAM card transfer	Data transfer request crosses invalid memory boundary during DMA operation	error
`57`	Warning high kV	kV detected higher than allowed range for desired technique	warning
`58`	Warning low kV	kV detected lower than allowed range for desired technique	warning
`58`	Media Type Not Available for SRAM card operation	Technique Processor detects SRAM card type is not supported or card type cannot be identified	error
`59`	Bad CRC during SRAM card data verification	Cyclic Redundancy Check fails when verifying software data loaded from SRAM card	error
`5A`	Diskette Controller error during SRAM card operation	Technique Processor detects hardware error in card interface controller	critical
`5A`	Percent charge indicator	Battery charge state displayed	info
`5B`	Seek Failed error during SRAM card sector location	Technique Processor unable to locate requested sector position on SRAM card	error
`5B`	Standard 5R/min mode	ABS table display	info
`5C`	Low dose mode	ABS table display	info
`5C`	Time-out during SRAM card operation	Technique Processor operation times out waiting for SRAM card response	error
`5D`	Chest 5R/min mode	ABS table display	info
`5E`	Extremities 5R/min mode	ABS table display	info
`5F`	Standard mode	ABS table display	info
`6`	Invalid file handle		error
`60`	Chest mode	ABS table display	info
`61`	Extremities mode	ABS table display	info
`63`	Checksum error	Checksum routine fails on MAIN software during boot	critical
`64`	Boot-up terminated	Displayed after CHECKSUM ERROR (code 63)	critical
`70% CHARGE`	Battery charge capacity has been depleted to 70% or less of nominal.	Software monitoring of battery state-of-charge calculation.	info
`70_PCT_CHARGE`	Battery charge at 70 percent	Battery charge reduced to 70% of effective charge	warning
`80`	Started Execution of Option ROM Code		info
`81`	NEAT TEST Fail - Reset		error
`82`	Bad GSP Load - Self Loop with Interrupts Disabled		error
`83-8F`	Undefined		error
`90`	Started Disk Boot Procedure		info
`91`	Data Error on Disk Read		error
`92`	Controller Error		error
`94`	Seek Failure		error
`98`	Disk Timed Out (Failed to Respond)		error
`99-9F`	Undefined		error
`A0`	Undefined		warning
`A1`	Nobrk Installed Successfully		info
`A2`	Undefined		unknown
`A3`	Nobrk Already Installed		info
`A4-AF`	Undefined		unknown
`ANALOG_CIRCUIT_FAULT`	Analog interface data acquisition failure	Multiple AD channels report failures or invalid values	critical
`ANODE_IS_HOT`	Anode hot warning in fluoroscopy mode	Anode temperature reaches 80% of rated heat capacity during fluoroscopy operation	warning
`ANODE_IS_HOT_FILM`	Anode hot warning in film mode	Anode temperature reaches 80% of rated heat capacity during film operation	warning
`B0`	Undefined		warning
`B1`	Enter TSR Install		info
`B2`	Undefined		unknown
`B3`	Previous User Interrupt Not Null		warning
`B4`	Changing User Interrupt vector		info
`B5`	Initialize Hardware Vector		info
`B6`	Initialize Vector		info
`B7-BD`	Undefined		unknown
`Bad Iris Cal`	Iris calibration mismatch between current and stored values	Boot-up drive to max/min positions yields different potentiometer values than EEPROM	error
`Bad Iris Pot`	Iris potentiometer returns erroneous or no values	Detected during system boot-up	error
`BAD_THERMISTOR`	Bad thermistor detected	Fault detected in housing temperature thermistor or associated circuitry during boot	critical
`BATTERY DISCONNECTED`	Software detects batteries are electrically disconnected from the system.	System boot-up when all but one arrows are lit on control panel display; +200V sense line reads 180V or less after charger disabled.	error
`BATTERY_DISCONNECTED_OP`	Battery packs disconnected during operation	Battery packs not connected when system powered up	critical
`BE`	Successful Installation		info
`BF`	Tsrser Already Installed		info
`BOOST_OVERTIME_OP`	Boost exposure timeout	Boost exposure button held over 30 seconds	warning
`C0-C9`	Undefined		warning
`CA`	Micronics Cache Initialization		info
`CB`	Undefined		unknown
`CC`	NMI Handler Shutdown		info
`CD-CF`	Undefined		unknown
`CHARGER FAILED`	Battery charger is not delivering adequate voltage and current to charge batteries.	Software detects battery voltage less than 225V and charger output current less than 1.0A during background monitoring (except during X-rays).	error
`CHARGER_FAILED_OP`	Charger failure during operation	Battery Charger circuit detected as failed	error
`D0`	Program Started Execution		info
`D1`	Error Opening GSP Object File		error
`D2`	Undefined		unknown
`D3`	Seek Error		error
`D4`	Seek Error On Data		error
`D5`	Virtual Address Error		error
`D6`	Error Reading File Header		error
`D7`	Error in Test Program Response Prior to Load		error
`D8`	Undefined		unknown
`D9`	Undefined		error
`DA`	Load Complete and Successful		info
`DB`	Undefined		unknown
`DC`	No Acknowledge from GSP		error
`DD`	Error Reading GSP Ready Flag		error
`DE`	Error Reading GSP Error Flag		error
`DF`	GSP Program Load Failed		error
`E0`	Workstation Program Executing		info
`E1-EB`	Undefined		unknown
`EE`	Unexpected Processor Exception		error
`EF`	Undefined		unknown
`F0`	Workstation Program Exited to DOS		info
`F1-FA`	Undefined		unknown
`FB`	GSP is not Ready		error
`FC`	GSP is not responding		error
`FD`	Front Panel is not Functioning		error
`FE`	Undefined		unknown
`FF`	Int 19H Boot		info
`FILAMENT FAULT`	No voltage detected on MA MEASURED line with X-ray switch engaged	Detected during X-ray exposure attempt	critical
`FOOTSWITCH_STUCK_OP`	Footswitch stuck during operation	Fault detected in footswitch, X-RAY ON switch, or switch sensing electronics during boot	critical
`FRAMING ERROR`	Communications error between control modules	Serial communications failure between Control Panel Processor PCB and Technique Processor PCB	error
`HIGH KV AND LOW FLUORO KV`	Detected kV and selected technique kV differ by more than 20%	KVP MEASURED does not agree with selected kV technique within 20% tolerance	error
`HOUSING_IS_HOT`	Housing hot warning in fluoroscopy mode	Housing temperature reaches 80% of rated heat capacity during fluoroscopy operation	warning
`HOUSING_IS_HOT_FILM`	Housing hot warning in film mode	Housing temperature reaches 80% of rated heat capacity during film operation	warning
`HV_INTERLOCK_FAULT`	High voltage with interlock open	HV generator sensed on when interlock circuit open	critical
`HV_INVERTER_ON_OP`	High voltage unexpectedly on	High voltage detected when it should be off	critical
`IFB Reset`	Image Function PCB has reset unexpectedly	Watchdog timer or power monitor triggered reset condition	warning
`IFB Time-out`	No serial communication response from Image Function PCB	Expected serial I/O response not received within timeout period	critical
`INTERLOCKS_OPEN_OP`	Interlock circuit broken during operation	+24V generator interlock circuit opened	critical
`I/O FAIL HH nnnn`	I/O software fatal error with hex module code and address	I/O operation failure or timeout in application code	critical
`Iris Jitter (Collimator Iris)`	Iris size drifts and requires repeated corrections	Iris position unstable, Image Function PCB making continuous corrections	warning
`Iris Too Large (Collimator)`	Collimator iris exceeds maximum size for selected field	Iris potentiometer value exceeds stored calibration value	warning
`KV_ON_ERROR_OP`	kV sensed without X-ray request during operation	KV sensed without X-ray command requested	critical
`KV ON IN ERROR`	High voltage detected without X-ray switch command	KVP MEASURED voltage present when no X-ray switch is engaged	critical
`LOW FLUORO MA`	Actual tube current (MA MEASURED) is less than selected mA by more than 20%	During fluoroscopy mode when measured mA is <80% of commanded value	warning
`MA_ON_ERROR_OP`	mA sensed without X-ray request during operation	mA sensed without X-ray command requested	critical
`MA ON IN ERROR`	Tube current detected on MA MEASURED line without X-ray switch command	When X-ray switch is not engaged but MA MEASURED voltage is present	critical
`Motor Stuck (Collimator Iris)`	Iris motor failed to reach selected destination	Motor not moving or moving too slowly during iris drive	error
`NO_BOOST_HOT`	No boost allowed due to excessive heat	Housing or anode temperature at approximately 90% of rated heat capacity	warning
`NO MA LIMITS`	MALIMIT.DAT file is not found in SRAM disk	System boot or technique loading	error
`OVERFLOW ERROR`	Communications buffer overflow between modules	Serial communications overflow between Control Panel Processor PCB and Technique Processor PCB	error
`OVERLOAD FAULT`	Primary winding current exceeds safe maximum of approximately 200 Amps	Current voltage on comparator U1-2 exceeds reference voltage (~1.6 VDC) on U1-3	critical
`OVERLOAD_FAULT_OP`	HV tank overload during operation	Excessive current to HV tank sensed	critical
`OVERVOLTAGE FAULT`	High voltage exceeds safe maximum of approximately 140 kVp	TAP1 signal voltage exceeds 5 VDC threshold at comparator U32-3	critical
`OVERVOLTAGE_FAULT_OP`	High voltage regulation failure	Excessive kVp sensed after boot or during operation	critical
`PARITY ERROR`	Parity check failure in communications	Parity error in serial communications between Control Panel Processor PCB and Technique Processor PCB	error
`PRE-CHARGE FAIL`	Pre-charge capacitors did not reach required voltage during boot sequence	Technique Processor PCB does not detect +200VSNS signal reaching approximately 4.5 VDC during boot (representing 185 VDC across pre-charge capacitors C2 & C3)	critical
`PRECHARGE_FAIL_OP`	Precharge failure during operation	Precharge cycle fails	critical
`RECHARGE NEEDED - ALLOW 24 HOURS - PRESS ANY KEY TO CONTINUE`	System batteries require extended recharge and de-gas cycle after 6 months without operation.	System boot-up when power has not been applied for 6 months.	warning
`REGULATOR FAIL`	Filament regulator output voltage exceeds specified range by ±15%	During X-ray exposure when FILSNS voltage monitored through Analog Interface exceeds range	warning
`REGULATOR_FAIL_OP`	Filament regulator failure	Filament regulator circuit failure detected	error
`RELEASED_EARLY_OP`	Film exposure released early	X-RAY ON switch released before desired mAs reached	warning
`RT FAIL HH nnnn`	Run-time software fatal error with hex module code and address	Software exception or fatal error condition in application code	critical
`SATURATION FAULT`	Darlington power transistor voltage drop excessive during on-time	SATDET voltage on comparator U14-2 exceeds reference voltage (~8 VDC) on U14-3	critical
`SATURATION_FAULT_OP`	Driver saturation failure	Darlington transistor saturation fault	critical
`STATOR_NOT_ON_OP`	Stator not rotating during operation	X-ray tube anode stator detected not rotating	critical
`WAIT_WILL_OVERHEAT`	All fluoroscopy prevented - tube overheating	Housing or anode at approximately 90% of rated heat capacity in fluoroscopy or film mode	warning
`WAIT_WILL_OVERHEAT_FILM`	Film exposures disabled - predicted overheating	Predicted housing or anode at 90% of rated heat capacity due to selected technique in film mode	warning
`WARM-UP NEEDED - ALLOW 4 HOURS - PRESS ANY KEY TO CONTINUE`	System batteries and image tube require warm-up cycle after 2 months without operation.	System boot-up when power has not been applied for 2 months.	warning
`WARNING_HIGH_KV_OP`	kV above desired range during operation	kV detected higher than allowed range	warning
`WARNING, HIGH MA`	Actual tube current (MA MEASURED) exceeds selected mA by more than 20%	During or after X-ray exposure when measured mA is >120% of commanded value	warning
`WARNING_HIGH_MA_OP`	mA above desired range during operation	mA detected higher than allowed range	warning
`WARNING_LOW_KV_OP`	kV below desired range during operation	kV detected lower than allowed range	warning
`WARNING_LOW_MA_OP`	mA below desired range during operation	mA detected lower than allowed range	warning
`X-RAY OVERTIME`	Exposure time in Film mode has exceeded 10% of expected exposure duration	When elapsed exposure time exceeds 110% of programmed exposure time in Film mode	warning

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.