CT scanners · CT ProSpeed family

GE Healthcare CT ProSpeed CT5: troubleshooting and error codes

The ServiceForge knowledge base holds 158 documented symptoms for the GE Healthcare CT ProSpeed CT5, with 215 ranked causes, 548 diagnostic checks with test points and expected values, and 21 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: Software loading and system recovery

Post-ATINST procedure to restore communication data, patient image data, raw data files, and user settings for CBF and Functional Image options, followed by software version updates (Qj, Qj-Base, Qj-Hlt, Zj-Adv)

Ranked causes

1. System software upgrade required (common)
2. Communication data restoration required for ELINK option (occasional)
3. Patient image data restoration required (occasional)
4. Raw data files restoration required (occasional)
5. CBF user setting parameters restoration required (occasional)
6. Functional Image user setting parameters restoration required (occasional)
7. Quick Filming Delay Time parameter restoration required (occasional)

First check

Verify system starts up after software load

Test point: CRT monitor display
Expected: VER. 06.02 and logo appear on screen (for Qj v6.00 load)

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

Calibration: Custom parameters configuration caution

Configure custom parameters including Recon Kernel Type, Collimator Type, Network Option, and Tube selection

Ranked causes

1. Custom parameters require manual restoration due to software bug (common)
2. Recon Kernel Type must match detector type (common)
3. Collimator Type parameter must be set correctly (common)
4. Network Option parameter must match installed hardware (common)
5. Tube parameter selection must match installed tube (common)

First check

Verify Recon Kernel Type selection

Test point: CHANGE PARAMETERS menu
Expected: Normal for Xe Detector; Normal or Enhanced for Hilight Detector; parameter absent for Version 6.xx/4.xx with Xe

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

Gantry panel switch verification - table and movement functions

Verify that table up/down, height display, and in/out movement functions operate correctly via gantry panel switches and foot switches.

Ranked causes

1. Table and movement controls require functional verification (common)
2. Table in/out and fast movement require verification (common)
3. Table scan position and zero function require verification (common)
4. Gantry tilt range function requires verification (common)

First check

Tilt gantry to 0 degrees

Test point: Gantry tilt control
Expected: Gantry at 0 deg position

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

Image performance out of specification

Measured image performance values exceed acceptable limits during periodic maintenance check

Ranked causes

1. KV output incorrect (unknown)
2. mA output incorrect (unknown)
3. Detector or system calibration drift (unknown)
4. CT number accuracy incorrect (unknown)

First check

Perform Image Performance Check

Test point: SYSTEM tab
Expected: Within specification

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

Calibration: Image performance radiation

Image performance check shows measured values out of specification

Ranked causes

1. KV output incorrect (unknown)
2. mA output incorrect (unknown)
3. CT number calibration drift (unknown)

First check

Perform Image Performance Check

Test point: Per SYSTEM tab FUNCTIONAL CHECK / ADJUSTMENT Manual
Expected: Within specification

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

Calibration: Image performance verification radiation

Verify CT image quality and noise levels across various scan parameters (kV, mA, FOV, slice thickness) using water and QA phantoms

Ranked causes

1. Image calibration and quality assurance required (common)
2. Image performance check at 120 kV, 2 sec, 350 mA, large focus, 5mm slice (common)
3. Image performance check at 120 kV, 2 sec, 350 mA, large focus, 3mm slice (common)

First check

Scan 25cm water phantom and measure mean CT number (MC)

Test point: 25cm water phantom
Expected: MC 0 ± 2 HU, ±2
Tools: CT scanner, water phantom

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

Calibration: Software Loading (ATINST)

Load system software and restore parameters to CT ProSpeed system. Procedure involves boot switch settings, ATINST program execution, and post-installation steps.

Ranked causes

1. Software installation and parameter restoration required (common)
2. ATINST program error during execution (occasional)
3. Retry ATINST after failure (occasional)

First check

Verify SW2 and SW4 BOOT switches on FMP1 Board set to ON

Test point: FMP1 Board Slot #30
Expected: SW2 ON, SW4 ON

7 more checks with pass and fail actions, 10 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Gantry rotation control unavailable or abnormal patient safety

Gantry does not respond to rotation commands or behaves abnormally during offline control via service switches

Ranked causes

1. SYS/OFF/MNL switch set to OFF during gantry rotation (occasional)
2. Gantry rotated by hand causing abnormal behavior (occasional)
3. Repeated rapid acceleration/deceleration causing servo overload (occasional)

First check

Verify SYS/OFF/MNL switch position

Test point: TGP Board SYS/OFF/MNL switch
Expected: Switch in ON or MNL position (OFF only in emergency)

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

Load-From-Cold procedure flowchart execution

Step-by-step execution of Load-From-Cold flowchart including DIP switch configuration, boot floppy insertion, reset cycles, ATINST execution, data and file operations, and parameter changes.

Ranked causes

1. Initial setup phase (unknown)
2. ATINST program execution and data management (unknown)
3. Finalization and parameter configuration (unknown)

First check

Execute load-from-cold standard procedure steps in sequence

Test point: Flowchart execution
Expected: Each step completes without errors; ATINST program runs successfully

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

Tiewrap Base adhesion to Gantry caution

Epoxy adhesive application procedure for bonding Tiewrap Base to CT gantry surface. Critical timing and placement requirements to ensure proper adhesion without damage to center hole.

Ranked causes

1. Improper epoxy mixing ratio or insufficient mixing (common)
2. Epoxy poured into center hole causing damage (occasional)
3. Inadequate surface preparation (common)

First check

Verify surface preparation

Test point: Tiewrap Base and Gantry bonding surfaces
Expected: Abraded and cleaned with alcohol

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

Calibration: -5 VDC power supply output (Zj) high voltage

Output voltage out of range or excessive ripple on -5 VDC rail measured at terminal strip

Ranked causes

1. Potentiometer adjustment needed (common)
2. Power supply faulty (excessive ripple) (occasional)

First check

Measure -5 VDC output voltage

Test point: Terminal strip on front of power supply
Expected: –4.9 VDC ∼ –5.1 VDC, +/-0.1 VDC
Tools: Digital multimeter (voltage measure mode)

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

Calibration: +12 VDC power supply output (Qj, Qj-Base, Qj-Hlt) high voltage

Output voltage out of range or excessive ripple on +12 VDC rail measured at terminal strip on front of power supply

Ranked causes

1. Potentiometer adjustment needed (common)
2. Power supply faulty (excessive ripple) (occasional)

First check

Measure +12 VDC output voltage

Test point: Terminal strip on front of power supply
Expected: +11.8 VDC ∼ +12.4 VDC, +/-0.4 VDC
Tools: Digital multimeter (voltage measure mode)

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

Calibration: +12 VDC power supply output (Zj-Adv) high voltage

Output voltage out of range or excessive ripple on +12 VDC rail

Ranked causes

1. Potentiometer adjustment needed (common)
2. Power supply faulty (excessive ripple) (occasional)

First check

Measure +12 VDC output voltage

Test point: Terminal strip on front of power supply
Expected: +11.8 VDC ∼ +12.4 VDC, +/-0.4 VDC
Tools: Digital multimeter (voltage measure mode)

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

Calibration: +12 VDC power supply output (Zj) high voltage

Output voltage out of range or excessive ripple on +12 VDC rail

Ranked causes

1. Potentiometer adjustment needed (common)
2. Power supply faulty (excessive ripple) (occasional)

First check

Measure +12 VDC output voltage

Test point: Terminal strip on front of power supply
Expected: +11.8 VDC ∼ +12.4 VDC, +/-0.4 VDC
Tools: Digital multimeter (voltage measure mode)

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

Calibration: +24 VDC power supply output (Zj-Adv) high voltage

Output voltage out of range or excessive ripple on +24 VDC rail

Ranked causes

1. Potentiometer adjustment needed (common)
2. Power supply faulty (excessive ripple) (occasional)

First check

Measure +24 VDC output voltage

Test point: Terminal strip on front of power supply
Expected: +23.7 VDC ∼ +24.7 VDC, +/-0.7 VDC
Tools: Digital multimeter (voltage measure mode)

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

Calibration: +24 VDC power supply output (Zj) high voltage

Output voltage out of range or excessive ripple on +24 VDC rail

Ranked causes

1. Potentiometer adjustment needed (common)
2. Power supply faulty (excessive ripple) (occasional)

First check

Measure +24 VDC output voltage

Test point: Terminal strip on front of power supply
Expected: +23.7 VDC ∼ +24.7 VDC, +/-0.7 VDC
Tools: Digital multimeter (voltage measure mode)

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

Calibration: +5 VDC power supply output (Qj, Qj-Base, Qj-Hlt) high voltage

Output voltage out of range or excessive ripple on +5 VDC rail measured at IPU2 Board slot #2 capacitor C1

Ranked causes

1. Potentiometer adjustment needed (common)
2. Power supply faulty (excessive ripple) (occasional)

First check

Measure +5 VDC output voltage

Test point: Capacitor C1 at front edge of IPU2 Board Slot #2
Expected: +5.0 VDC ∼ +5.1 VDC, +0.1 VDC
Tools: Digital multimeter (voltage measure mode)

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

Calibration: +5 VDC power supply output (Zj-Adv) high voltage

Output voltage out of range or excessive ripple on +5 VDC rail measured at IPU2 Board slot #32 capacitor C1

Ranked causes

1. Potentiometer adjustment needed (common)
2. Power supply faulty (excessive ripple) (occasional)

First check

Measure +5 VDC output voltage

Test point: Capacitor C1 at front edge of IPU2 Board Slot #32
Expected: +4.9 VDC ∼ +5.1 VDC, +/-0.1 VDC
Tools: Digital multimeter (voltage measure mode)

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

Calibration: +5 VDC power supply output (Zj) high voltage

Output voltage out of range or excessive ripple on +5 VDC rail measured at FCP2A Board slot #36 capacitor

Ranked causes

1. Potentiometer adjustment needed (common)
2. Power supply faulty (excessive ripple) (occasional)

First check

Measure +5 VDC output voltage

Test point: Capacitor at front edge of FCP2A Board Slot #36
Expected: +4.9 VDC ∼ +5.1 VDC, +/-0.1 VDC
Tools: Digital multimeter (voltage measure mode)

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

Calibration: Air and Phantom Calibrations radiation

Obtain baseline calibration files using air and phantom scans after CAM linearity check and Hilight calibrations (Q-CAL, XT-CAL) are completed. These calibrations adjust CT number accuracy.

Ranked causes

1. System requires baseline calibration after maintenance (common)
2. CT number scaling accuracy required (common)

First check

Confirm Q-CAL and XT-CAL procedures completed before air/phantom calibrations

Test point: System calibration status
Expected: Q-CAL and XT-CAL calibration files present

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

Calibration: Azimuth belt tension caution

Adjust rotational mechanism belt tension to prevent over-tension damage and ensure proper gantry rotation

Ranked causes

1. Belt tension requires adjustment per maintenance procedure (unknown)
2. Over tension condition exists or must be prevented (unknown)

First check

Visual inspection: gantry switches and covers

Test point: Gantry rear base
Expected: Rotate and XG switches in OFF position, rear and side covers removable

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

Calibration: Gravity SAG measurement and storage radiation

Procedure to measure and store detector gravity sag deflection data under varying x-ray parameters

Ranked causes

1. Baseline gravity SAG data acquisition and recording (common)
2. Gravity SAG data processing and mean file storage (common)

First check

Verify x-ray tube warm-up before air scans

Test point: Touch screen case heat indicator
Expected: 20% or higher heat level
Tools: CT system display

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

Calibration: Rotation deceleration

Adjustment of gantry stop deceleration at specified speeds using VR5 potentiometer on Servo Amp to achieve shortest stop time without overshoot at home position.

Ranked causes

1. Gantry overshoots home position during deceleration stop (occasional)
2. Gantry does not stop quickly or overshoots after adjustment (occasional)

First check

Remove gantry left side cover

Test point: Left side cover
Expected: Cover removed

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

Calibration: Rotation velocity offset

Adjustment of gantry rotation to maintain correct azimuth position with no drift during continuous rotation using VZERO potentiometer.

Ranked causes

1. Gantry drifts CCW during continuous rotation (occasional)
2. Gantry drifts CW during continuous rotation (occasional)

First check

Switch OFF Rotate switch

Test point: Rotate switch at gantry rear base
Expected: Rotate switch OFF

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

Calibration: Software loading from MOD and floppy disks

Load-From-Cold (LFC) procedure to rebuild operating software on hard disk after corruption or to apply software revisions. Requires setting CPW DIP switches, inserting boot floppy, pulling reset switch, running ATINST program, initializing disk, and loading software/data files.

Ranked causes

1. Hard disk corrupted by failure or crash (occasional)
2. Software requires update for improvements or bug fixes (occasional)

First check

Save existing patient data before LFC procedure

Test point: Pre-ATINST Procedure menu
Expected: All patient data saved to external medium

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

Calibration: System software loading

Load-From-Cold (LFC) procedure to rebuild operating software on hard disk from MOD and floppy disks after corruption or software updates

Ranked causes

1. Hard disk corruption due to failure or crash (occasional)
2. Software requires update to incorporate improvements or fixes (occasional)

First check

Save patient image data before proceeding

Test point: Image File Management function
Expected: All patient data archived to external media

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

Calibration: X-ray beam detector alignment radiation

Procedure to verify and adjust x-ray beam centering to detector window for two detector configurations (Qj/Qj-Base/Zj and Qj-Hlt/Zj-Adv)

Ranked causes

1. Detector Z-axis misalignment from specification (common)
2. Detector bowl position misalignment (advanced configuration) (common)

First check

Warm up x-ray tube to operating temperature

Test point: Case heat indicator on touch screen
Expected: 20% or higher heat level
Tools: CT system touch screen display

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

Cradle fails to move or moves with resistance patient safety

Cradle does not respond to motion commands or exhibits restricted movement during travel

Ranked causes

1. Cradle bearing misalignment or inadequate gap (occasional)
2. Cradle-to-support bearing contact (occasional)

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

Error 537 or 538 occurs during scan high voltage

Error 537 or 538 displayed during CT scan operation

Ranked causes

1. HV Tank or kV board issue (common)
2. Tube or HV Tank failure (occasional)

First check

Run kV control board service tests S33, S34

Test point: kV control board
Expected: Tests complete without errors

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

Error X41 with spit noise high voltage

Error X41 occurs during scan with audible spit-like noise; indicates anode-cathode arcing or HV tank issue

Ranked causes

1. Spit (arcing) between anode and cathode in X-ray tube (common)
2. HV tank oil leakage or air bubble (occasional)

First check

Detect spit issue using oscilloscope

Test point: TP9 on kV board (Anode-kV) and TP32 on kV board (Cathode-kV)
Expected: No spit waveform observed during high kV scans

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

Error X41 without spit noise - intermittent high voltage

Error X41 occurs during scan without audible spit noise; indicates HV tank or kV board issue

Ranked causes

1. HV tank intermittent fault (occasional)
2. kV board or inverter malfunction (occasional)

First check

Run kV board service test

Test point: kV board test point diagnostic
Expected: No error during kV board test

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

Gantry cover safety bracket switches disengaged or non-functional patient safety

Safety switches on gantry right side cover are disengaged or not functioning, affecting safety loop closure, gantry rotation control, or alarm sounds

Ranked causes

1. Gantry right side cover removed or misaligned (occasional)
2. Safety switch mechanical failure or misalignment (rare)

First check

Verify gantry right side cover is properly installed

Test point: Gantry right side cover seating and attachment
Expected: Cover fully seated and secured with all fasteners tight

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

High voltage discharge to ground high voltage

System console displays XG Error codes 533, 537, 538 or 541 indicating possible HV tank or X-ray tube failure with high-voltage to ground discharge

Ranked causes

1. HV Tank failure (unknown)
2. X-ray tube failure (unknown)

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

HV Tank or X-ray tube failure indicated high voltage

System console displays XG Error codes 533, 537, 538, or 541; high voltage to ground discharge detected but source unclear between tank and tube

Ranked causes

1. X-ray tube high voltage failure (unknown)
2. HV Tank high voltage failure (unknown)

First check

Follow troubleshooting tree HV smart diag procedure; may require oscilloscope for differentiation

Test point: HV Tank and X-ray tube discharge points
Expected: Determine source of high voltage to ground discharge

HV tank or X-ray tube failure with error codes high voltage

System console displays XG error codes 533, 537, 538, or 541 indicating high voltage to ground discharge

Ranked causes

1. HV tank failure (unknown)
2. X-ray tube failure (unknown)

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

HV Tank or X-Ray Tube failure with XG errors high voltage

System console displays error codes 533, 537, 538, or 541 indicating high voltage to ground discharge; need to differentiate between HV Tank failure and X-Ray Tube failure to avoid removing good tube while retaining faulty tank

Ranked causes

1. HV Tank failure (unknown)
2. X-Ray Tube failure (unknown)

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

Software Version Upgrade Loading (V411)

Load revision 4.01 system software and perform revision update after ATINST completion.

Ranked causes

1. Post-ATINST software version upgrade required (common)
2. Custom parameters and data files restoration (common)

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

Spits (Error 533 / Synergy 28021) high voltage

Voltage instability or arcing events detected; indicates potential HV tank or tube failure

Ranked causes

1. HV tank high voltage to ground discharge (unknown)
2. X-ray tube high voltage discharge (unknown)

First check

Follow HV smart diag troubleshooting tree

Expected: Procedure outcome per HV smart diag

XG Error displayed on system console high voltage

System console displays XG Error, indicating possible high voltage tank or X-ray tube failure with high probability of HV Tank or X Ray Tube issue

Ranked causes

1. HV Tank failure (unknown)
2. X Ray Tube failure (unknown)

First check

Follow HV smart diag troubleshooting tree to differentiate Tank versus Tube failures

Test point: System console error display
Expected: XG Error code (533, 537, 538, or 541)

ATINST Error Menu Response

If ATINST program terminates unexpectedly, error menu appears allowing exit, retry, or diagnostic file inspection.

Ranked causes

1. Program error or hardware failure during ATINST execution (rare)

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

Calibration: 25cm water phantom protocol ProSpeed series radiation

Verify image quality at multiple kV and mA settings on 25cm water phantom for ProSpeed models

Ranked causes

1. Multi-parameter image quality baseline required (common)

First check

Scan at 80 kV, 3 sec, 350 mA, large focus

Test point: 25cm water phantom
Expected: MC 0 ± 2

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

Calibration: After Glow (AV) compensation radiation

Lumex Crystal light emission persists after x-ray stops. Creates After Glow Vector file for compensation.

Ranked causes

1. After Glow artifact from Lumex Crystal (common)

First check

Rotate switch OFF

Test point: Rotate switch
Expected: OFF

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

Calibration: Air and phantom (Qj, Qj-Base, Qj-Hlt, Zj-Adv) radiation

Automatic calibration using air and phantom scans to establish baseline CT reference standards.

Ranked causes

1. System requires air and phantom baseline calibration (common)

First check

Verify bow-tie filter installation

Test point: Collimator
Expected: Bow-tie filter installed

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

Calibration: Air and phantom (Zj) with phantoms radiation

Air calibration initialization followed by phantom calibrations using 35 cm and 25 cm phantoms at specified FOVs.

Ranked causes

1. System requires air and phantom baseline calibration with heating precondition (common)

First check

Verify anode heat level before procedure

Test point: Touch screen 'Anode' indicator upper right
Expected: 10% or below

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

Calibration: Aperture ratio verification

Verify that collimator aperture ratios for five focal spot configurations fall within specification 0.10–0.16 (1mm) to 0.10–0.16 (10mm) by acquiring raw data, calculating mean files, and graphical profile analysis via SUPPORT DISPLAY.

Ranked causes

1. Aperture ratio out of specification (unknown)

First check

Insert BOOT floppy and access Maintenance menu

Test point: Gantry control panel
Expected: MAINTENANCE MENU displays; CALIBRATION option visible

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

Calibration: Bow-tie filter curve verification caution

Verify bow-tie filter curve is smooth and properly centered by acquiring two air stationary scans (filter installed and removed), computing filter transmission curve, and inspecting graphical profile for channels 1–500 and 400–end.

Ranked causes

1. Filter curve irregular or out of center (unknown)

First check

Power down and prepare gantry for filter access

Test point: Gantry rear base rotate switch and covers
Expected: Rotate switch OFF; front and both side covers removed

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

Calibration: BPU switch configuration

Configure BPU board switch settings (SWI5A1) for correct operation

Ranked causes

1. Factory default configuration required (unknown)

First check

Verify BPU switch SWI5A1 position matches normal setting

Test point: BPU SWI5A1
Expected: As illustrated in Illustration 2–30

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

Calibration: BPU2 switch configuration

Configure BPU2 board switch settings (SW15A1) for correct operation on ProSpeed Plus and ProSpeed EF models

Ranked causes

1. Factory default configuration required (unknown)

First check

Verify BPU2 switch SW15A1 position matches normal setting

Test point: BPU2 SW15A1
Expected: As illustrated in Illustration 2–24

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

Calibration: CAM Amplifier Linearity Check radiation

Verify detector amplifier response linearity after X-ray tube, detector, collimator, filter, or alignment changes. Two offline air scans at 100 mA and 200 mA are performed and mean files generated to check linearity ratio.

Ranked causes

1. Amplifier non-linearity detected (unknown)

First check

Verify CAM amplifier ratio between 100 mA and 200 mA scans

Test point: Calculated mean file (M file 3)
Expected: Linearity ratio 0.99 to 1.01 across channels 1–500 and 300–end, ±0.01
Tools: SUPPORT DISPLAY software

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

Calibration: Collimator thickness configuration for GEMS-Europe caution

Configure collimator thickness setting for ProSpeed systems in GEMS-Europe

Ranked causes

1. 2 mm thickness incompatible with certain ProSpeed models in GEMS-Europe (common)

First check

Verify collimator thickness setting for GEMS-Europe systems

Test point: Collimator thickness configuration menu
Expected: 3 mm selected for ProSpeed S Fast, SX Power, SX Advantage, or Advantage

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

Calibration: Compact Siting Mode Dip Switch Configuration

Set TGP dip switches for Compact Siting (Short Foot Print) Mode 1 or 2 when ROM part number 2106128–2 or later is installed

Ranked causes

1. Space-constrained installation requires Compact Siting mode (rare)

First check

Verify TP ROM part number is 2106128–2 or later

Test point: TP ROM location U3P
Expected: Part number 2106128–2 or later

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

Calibration: CPW Board DIP switches caution

Configure DIP switches on CPW board for correct test mode, RS232C baud rate, boot source, and HDD configuration

Ranked causes

1. DIP switch configuration required during installation or service (common)

First check

Verify DIP switch 5A1 position

Test point: CPW board DIP switch 5A1
Expected: All positions set to 0 (not used)

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

Calibration: CPW Board jumpers caution

Configure jumpers on CPW board for SRAM battery backup, Power ON Reset, Bus Timeout, and INTVL settings

Ranked causes

1. Jumper configuration required for proper operation (common)

First check

Verify jumper 30D1 SRAM battery backup position

Test point: CPW board jumper 30D1
Expected: STBY for battery backup (normal setting)

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

Calibration: Cradle motor maximum torque caution

Adjustment of motor driver RUN potentiometer to set maximum torque via CP+/CP– voltage

Ranked causes

1. Motor torque requires calibration adjustment (unknown)

First check

Verify cradle latch switches position

Test point: Cradle latch switches
Expected: Both set to 'Latch'

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

Calibration: CT number adjustment (Qj, Qj-Base) radiation

Modifies CAL files so water CT=0 and air CT=-1000. Measures CT values from air and phantom scans at all FOVs (25-50 cm) and kV (80-140). Takes ~3 hours. Temperature affects water CT by -0.4/°C.

Ranked causes

1. Air and phantom calibration scans show CT deviations from standard (common)

First check

Preset scan parameters for all FOVs and thicknesses

Test point: [Preset Prmtr] key while [New Patient] flashes
Expected: SCAN PARAMETER menu; select I-EXTR and MULTI/DYNAMIC; create params for each FOV/TH combo

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

Calibration: DBM and M32W/M64W jumper configuration

Configure DBM board jumpers for correct operation with M32W or M64W memory modules

Ranked causes

1. Factory default jumper configuration required (unknown)

First check

Verify DBM board jumpers match normal setting

Test point: DBM jumpers
Expected: As illustrated in Illustration 2–29

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

Calibration: Detector beam-on-window alignment radiation

Verify X-ray beam exposure pattern on detector using Polaroid film imaging to ensure proper beam window positioning

Ranked causes

1. Detector window beam alignment requires verification (common)

First check

Verify X-ray tube anode heat level before detector beam check

Test point: Touch screen 'A' or 'Anode' indicator upper right
Expected: Anode heat at 40% or higher

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

Calibration: DTRE Board Jumper Configuration

Set jumper settings on DTRE Board for Qj–Base, Qj–Hlt, or Zj–Adv variants

Ranked causes

1. DTRE Board jumper configuration required for system variant (common)

First check

Verify DTRE Board jumper configuration for system variant

Test point: DTRE Board jumpers (location shown in Illustration 3–2)
Expected: Jumpers set correctly for Qj–Base, Qj–Hlt, or Zj–Adv variant

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

Calibration: Dynamic gain (DG) compensation radiation

Compensates for CT number variations caused by CAM Board gain changes during different scan times.

Ranked causes

1. CAM Board gain changes from different scan times (common)

First check

Rotate switch OFF

Test point: Rotate switch
Expected: OFF

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

Calibration: FCP3B switch configuration

Configure FCP3B board switch settings (SW15A1) for correct operation on ProSpeed VX, ProSpeed, Accell, and ProSpeed models

Ranked causes

1. Factory default configuration required (unknown)

First check

Verify FCP3B switch SW15A1 position matches normal setting

Test point: FCP3B SW15A1
Expected: As illustrated in Illustration 2–25

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

More symptoms

Calibration: FCP4 jumper configuration
Calibration: FCP4 switch configuration
Calibration: Floppy disk initialization for data save
Calibration: Floppy disk initialization for system data backup
Calibration: FMD switch configuration
Calibration: FPA + FPAM configuration
Calibration: FPA2 switch configuration
Calibration: Gantry tilt range display
Calibration: Gantry tilt rotation
Calibration: Gravity SAG data review via display utility
Calibration: Gravity SAG measurement
Calibration: Hilight Calibration
Calibration: IPU2 Board memory configuration
Calibration: IPU2 Board recon processor selection
Calibration: ISC board switch configuration
Calibration: Iso Center Alignment
Calibration: ISO Center Alignment (Qj-Hlt, Zj-Adv)
Calibration: ISO Center Alignment (Qj, Qj-Base, Zj)
Calibration: KV and MA output verification
Calibration: KV check with HV divider
Calibration: M64W memory assembly switch configuration
Calibration: MA check
Calibration: MISCE board jumper and switch configuration (option)
Calibration: Mixed-material screw tightening
Calibration: MTC board jumper and switch configuration (option)
Calibration: ODC2 board jumper and switch configuration (option)
Calibration: OGP Board Dip Switch Configuration
Calibration: Operator Console switch and jumper settings
Calibration: PDC board jumper and switch configuration
Calibration: PDC jumper JP1B2 configuration
Calibration: PDC switch SWG6A1 configuration
Calibration: Phantom Calibration
Calibration: Positioning lights alignment
Calibration: Q Calibration (Hilight)
Calibration: Rotation speed
Calibration: Screw tightening torque
Calibration: SCSI board jumper and switch configuration
Calibration: Servo Amplifier Dip Switch Configuration
Calibration: Set cursor for image measurement
Calibration: Set cursor on reconstruction display
Calibration: Software loading post-ATINST procedure
Calibration: Software loading V/R 5.01 and 5.02
Calibration: Special startup procedure (FMP1 board E-Link configuration)
Calibration: STL board jumper and switch configuration (option)
Calibration: Table perpendicularity verification
Calibration: Table right-left positioning
Calibration: Table safety rotation control
Calibration: TGP Board Biopsy Mode Dip Switch Setup
Calibration: TGP Board Dip Switch Configuration
Calibration: Tilt angle
Calibration: Tilt guide roller gap
Calibration: Tilt roller operation
Calibration: Tilt speed
Calibration: Video signal for multiformat camera
Calibration: Water phantom surface alignment to scan plane
Calibration: X-ray alignment after detector and gravity procedures
Calibration: X-ray alignment plane of rotation
Calibration: XT Calibration (Crosstalk)
Communication lost between OC and DC III
Cradle motor RUN potentiometer adjustment
Cradle motor torque not in range 17-18 kg
CRT monitor display controls out of adjustment
CT-MAX Tube to CT-Plus Tube replacement requires X-Ray Generator modification
Detector bias voltage failure
Error 537 or 538 during scan
Error beep volume incorrect
Fan defective or inoperative
Gantry does not rotate
Gantry Error 4 or Error 6 occurs during rotation
Gantry Home button operation verification
Gantry home position malfunction
Gantry positioning lights control verification
Gantry rotation hazard during position adjustment
Hoist hook cannot catch tube hanging bar
Hoist hook cannot catch tube hanging bar during replacement
Hoist hook cannot engage tube hanging bar during replacement
HV system intermittent noise or arcing
Oil leak from cylinder, pump or hoses
Oil leaks from cylinder, pump or hoses
Plasma display calibration required
Power supply ground connection poor
Power supply ground connection verification required
Preparation: Remove gantry covers and collimator filter
Scan box LED indicator lights not illuminated
SCAN BOX LED indicators not illuminated
Scan box LED switches not illuminated
SCAN BOX LEDs broken or not illuminated
STOP potentiometer factory setting
System hang-up prevention with ELINK option
Table and Gantry interlock verification
Table lowers on its own when unoperated
TGP Board relay replacement required
Tiewrap base detaches from gantry cover
Tiewrap base falls from gantry cover
Tiewrap base falls off gantry cover
Tiewrap base loose on gantry cover
Tiewrap base on gantry cover comes loose or falls off
Touch panel tilt angle misaligned

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

Error codes

Code	Meaning	Trigger	Severity
`28021`	Spits (Synergy series equivalent of code 533)	Voltage instability or arcing in HV circuit	error
`28025`	Anode Over KV (Synergy series equivalent of code 537)	Anode voltage exceeds normal level	error
`28026`	Cathode Over KV (Synergy series equivalent of code 538)	Cathode voltage exceeds normal level	error
`28029`	Anode Overcurrent (Synergy series equivalent of code 541)	Anode current exceeds normal limit	error
`533`	Spits (Error Code 28021 for Synergy)	High voltage to ground discharge	error
`533`	Spits	Voltage instability or arcing events in HV tank or X-ray tube	error
`537`	HV system error related to error condition x41 patterns	Intermittent or persistent high-voltage fault detection	warning
`537`	High voltage or kV board error	Occurs during CT scan operation	error
`537`	Anode Over KV (Synergy: 28025)	Anode high voltage threshold exceeded	error
`537`	Anode Over KV (Error Code 28025 for Synergy)	High voltage to ground discharge in anode circuit	error
`538`	Cathode Over KV (Error Code 28026 for Synergy)	High voltage to ground discharge in cathode circuit	error
`538`	HV system error related to error condition x41 patterns	Intermittent or persistent high-voltage fault detection	warning
`538`	High voltage or kV board error	Occurs during CT scan operation	error
`541`	Anode Overcurrent (Error Code 28029 for Synergy)	Excessive anode current detected	error
`C2`	FHS error	Error condition during ATINST operations	error
`CALIBRATION FILE INCOMPATIBILITY`	Calibration files of old version and new version have no compatibility	Approximately 30 minutes after ATINST start when incompatible calibration file versions detected	warning
`Current Task Aborted Unexpectedly`	ATINST program encountered error during execution	Program abort due to program bug, hardware failure, or deviation between program execution and expected execution (Text File vs Log File mismatch)	error
`Error 4`	Gantry rotation malfunction	Gantry rotation function commanded; AZ CONN board relay failure detected	error
`Error 6`	Gantry rotation failure	Gantry rotation function commanded; AZ CONN board relay failure detected	error
`X41`	High voltage tank or X-ray tube fault; arcing or critical hardware failure	Error occurs during X-ray scan operations	critical
`x41`	Generic high-voltage system error condition	Various HV circuit faults or anomalies	warning

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

Community

0 fixes logged by technicians through their AI, with outcomes, for this model.

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