GE Medical Systems CT/i System Service Manual Direction 2152918-100 PDF

DESCRIPTION

GE Medical Systems CT/i System Service Manual — Complete 5-Book PDF (Direction 2152918-100, Rev. 22)

This is the official GE Medical Systems factory service manual for the GE CT/i (CTi) computed tomography system, published under Direction 2152918-100, Revision 22 (December 2005) and authored by GE’s GEMS-AM / CTSE technical publication group. This is the complete 5-book compilation — all 828 pages — used by GE-trained field service engineers for all service, alignment, calibration, replacement, and troubleshooting procedures on the GE CT/i scanner system.

Whether you’re a biomedical service engineer diagnosing a gantry fault, a CT service technician performing image calibration after an X-ray tube replacement, or an independent service organisation needing the exact GE CT/i HSA tube replacement procedure, this manual provides factory-level guidance you cannot find anywhere else.

📋 File Details

📚 Full Table of Contents — All 5 Books

📗 Book 1 — Pages 1–206 Chapters 1–5: Safety, Image Quality, Alignments, Checks & Theory

Preface — Publication Conventions

• Safety & Hazard Information (text, graphical, character representation)
• Standard paragraphs, page layout, computer screen I/O conventions

Chapter 1 — Information Sources, Quality & Safety

• CT/i General Publications & Customer Software
• HSA Service Publications
• Safety & System Quality Considerations:
  • System dangers and precautions
  • General safety requirements
  • Torque wrenches & specifications
  • Metric hardware cross reference
  • Slip ring considerations
  • ESD & device handling (electrostatic discharge, proper ESD handling)
  • Electromagnetic Compatibility (EMC / EMI) — maintaining CE compliance
  • Replacement test and verification philosophy & instructions

Chapter 2 — Image Calibration

• Introduction to the calibration process
• Prepare the QA phantom
• Check for Cal Files
• Calibration Process “A” — When NO Cal Files Exist
• Calibration Process “B” — When Cal Files Exist
• How to Scan with Protocols
• ‘N’ Number Check
• How to Analyze Calibration Data
• System Tests
• Table/Gantry Alignment Procedure
• Tomographic Plane Indication
• Exposure Time Accuracy
• System Scanning Test
• Image Series Scan Protocol:
  • Recommended scan parameters & failure criteria
  • Leveling the phantom
  • Image troubleshooting
  • Data recording — means and standard deviation
  • Image series definitions for CT/i
  • QA image series
• Analyze QA Image Series:
  • Image data sheets for QA#1, QA#2, QA#3 scans and evaluation
• System State MOD
• Tube Heat Soak and Seasoning
• Thermal Test
• Cradle Incrementation Test
• Artifacts:
  • Center Smudge (definition, method of measurement)
  • Reference Mean (failure, application, failure rate)
  • Rings (definition, measurement method)
  • Artifacts caused by collimator grease — G5 collimator

Chapter 3 — System Alignments

• Overview & gantry geometry definitions
• System alignment procedure & required tools
• Plane of Rotation (POR) — 10 mm and 1 mm exposure procedures
• X-Ray Beam on Detector Window (BOW)
• Isocenter (ISO):
  • Acquire ISO air scans, pin scans
  • Analyze ISO scans
  • Adjust isocenter
• CBF (Center Body Filter) and SAG — adjusting CBF, SAG procedure
• Radial Alignment — cold tube, tool placement, scan, radial adjustment

Chapter 4 — Functional Checks

• Input (PDU) Power
• Gantry Display Test
• Power Supplies: ETC, STC, OBC, HP-DAS, E-DAS, Data Communication, Detector Heater, Filament, Tilt/Elevation (+170VDC), Collimator
• Axial Motion — Axial encoder check, axial brake check
• Intercom
• Alignment Lights (Accuracy) — Internal axial, external axial, coronal lights, visualization
• Emergency Stop
• Collimator
• Mechanical Characterization Procedure:
  • Characterization inputs, gantry tilt position
  • Table elevation characterization
  • Cradle characterization
  • Collimator characterization
  • Hardware reset, characterization limits, view values/log

Chapter 5 — System Theory

• Data Acquisition (Major Function):
  • Scan data acquisition, save, trigger generation (DAS trigger circuitry, PLL 82C54 counters, DAS trigger counter 68230)
  • Detector heater, SBC processing, OC processing
• Image Generation (Major Function):
  • Data restore, preprocessing, back projection, IBO, post processing, image transfer, suite network, image save, scout image transfer
• System Communications (Major Function):
  • SBC boot link, control network, suite network
  • Slipring communications (DAS data transfer, CPU comms, scan control)
  • DAS serial control, final scan / autovoice control
  • Autovoice/Intercom — gantry microphones, speakers, console microphone, ALC, intercom board, speech frequencies
  • Security link, scan control network
• X-Ray Generation (Major Function):
  • X-ray exposure interlocks, final exposure command
  • DC HV supply backup contactor interlock
  • Table–gantry sync
  • Tube Rotor Control — HSA Tube (CTVRC power module, tube motor)
  • Tube Rotor Control — PERFORMIX Tube (HEMRC interface board, HEMRC AC drive, HEMIT, tube motor)
  • kV Loop (KV board 46-321064G1 and 46-321198G1/2143147, HV supplies, inverters)
  • mA Loop, tube cooling, tube identifiers, tube pressure sense
  • X-Ray Collimation and Filtration (collimator control board, X-ray filtration)
  • Filament select, rotating HVON control, rotating backup timer
• Calibration Processing (Major Function): Cal data processing, save, SBC/OC processing, diagnostic data save
• Patient Positioning (Major Function): Loading, scanning, alignment lights, scan plane angle (tilt), vertical/longitudinal position
• Axial Control

📘 Book 2 — Pages 207–312 Chapters 6–7: System Information & Software Tools

Chapter 6 — System Information

• Operating System (OS): Time/date, user choices (screen saver, mouse, keyboard language), computer/console power-up and initialisation (Indigo and Octane host bootup)
• System configuration and OS-level administration
• UNIX shell commands, super user access, application restart procedures

Chapter 7 — Software Tools

• Service Desktop Main Menu — introduction, menu function descriptions
• Procedural user interface, desktop inter-operability
• Service Desktop management, clean-up, exit procedures
• System resets
• Troubleshoot menu
• Utilities menu
• Screens: Troubleshooting, replacement procedures, planned maintenance, system integration (general service)

📙 Book 3 — Pages 313–484 Chapter 8: Console (Host Computer & Scan Recon)

Chapter 8 — Console

• Introduction
• CT/i (Octane™) Host Computer:
  • Octane host overview, main (DIMM) memory, SCSI, PCI
  • Octane connectors, controls, serial expansion
• Console hardware and scan reconstruction system
• Host computer diagnostics and replacement procedures

📕 Book 4 — Pages 485–656 Chapters 9–10: High Voltage & X-Ray, and DAS & Detector

Chapter 9 — High Voltage & X-Ray

• X-ray tube replacement procedures (46-309500G1)
• HSA tube procedures — anode and cathode inverter (Section 26.0, updated Rev. 21)
• High voltage supply diagnostics and replacement
• kV/mA system service and adjustment

Chapter 10 — DAS & Detector

• Replacement verification and re-test
  • DAS replacement preparation and tests
  • Detector replacement and tests
• Diagnostic Data Collection (DDC) — overview, scanning and data processing requirements
• DAS board diagnostics, detector troubleshooting

📒 Book 5 — Pages 657–828 Chapters 11–13, Index & Glossary: Gantry, Table, and PDU

Chapter 11 — Gantry

• OBC (On-Board Computer):
  • Replacement verification and re-test
  • Component replacement: OBC fan (46-220234P3), RCOM board (46-264700G1), OBC Heurikon CPU board (46-296377P1), Gantry I/O board (46-288512G1), OBC backplane (46-264660G1), OBC thermistor (46-297603G1), OBC ribbon cable (46-297445P1)
  • OBC Heurikon CPU board test points, LEDs (status LEDs), switch settings
• Slipring system (including S/A style slipring updates)
• Gantry mechanical and electrical service

Chapter 12 — Table

• Replacement verification and re-test
• Table Replacement Procedures (37 procedures including):
  • AC/DC power switch (46-297093P1)
  • Actuator cover, actuator limit switch (46-296561P10), actuator magnet rod, table elevation actuator (46-296561P1 / 2103043)
  • Cradle drive belt (46-221532P18)
  • Elevation encoder belt (46-170047P7)
  • BNC T-connector (46-297332P1)
  • Upper pin actuator bumper disk (46-297350P1)
  • And 28 additional table component replacement procedures

Chapter 13 — Power Distribution Unit (PDU)

• PDU safety warning
• PDU replacement verification and re-test
• Component locations (GPDU Model 2113764 & CPDU Model 2133533)
• Ground bus continuity check (GPDU)
• PDU Component Details:
  • Line transformer settings
  • Westamp servo amplifier hardware
  • Additional PDU electrical components

Appendix A — Torque Specifications

Index & Glossary — Comprehensive alphabetical index and CT/i terminology glossary

🔧 Who Needs This Manual?

• ✅ GE CT/i biomedical service engineers performing planned maintenance or fault diagnosis
• ✅ Independent CT service technicians performing GE CTi X-ray tube or HV supply replacement
• ✅ Radiology department engineers performing CT/i image calibration and QA phantom procedures
• ✅ Workshop engineers troubleshooting GE CT/i gantry, table elevation, or DAS faults
• ✅ Service organisations needing GE CT/i HSA CTi slipring, OBC, or PDU service data
• ✅ Anyone needing the complete GE CTi system service manual PDF without waiting for a physical copy

GE CT/i service documentation is notoriously difficult to source — and every hour your scanner is offline costs thousands. Download this complete 828-page factory manual instantly, and have the exact calibration procedure, alignment spec, or replacement step at your fingertips before your next service call. This is factory data, available right now.