Vatech A9 PHT-30CSS User manual

vatech A9
Technical manual
Model : PHT-30CSS
Version : 1.01
English

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General Information
The document is created by VATECH Co., Ltd., cooperating with worldwide field technicians and VATECH
engineers for years aiming to give effective service guidelines. Therefore, the instructions and safety
information maintained in this manual provides the maximum degree of protection with VATECH’s know-
how techniques and schemes concerning not only repair but maintenance. We strongly recommend
familiarizing yourself with this technical manual to carry out the necessary information on the VATECH
equipment.
The information contained in this technical manual may be subject to change at any time without notice,
justification, or notification to the persons concerned. Revisions and redistribution of this manual may occur
due to upgrades or design modifications.
The Information on this manual is the confidential property of VATECH Co., Ltd., and any unauthorized
distribution or copying of this document is strictly prohibited.
Manual Version
vatech A9 (PHT-30CSS) Technical manual Ver. 1.01 - ENG
Publication Date
July, 2022

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Table of Contents
Before you begin ..............................................................................................................................4
Chapter 1. Hardware Part Service Guide ......................................................................................9
1.1. vatech A9(PHT-30CSS) System Block Diagram............................................................................. 9
1.2. vatech A9 (PHT-30CSS) Board Configuration.............................................................................. 10
1.3. vatech A9(PHT-30CSS) Connection Diagram............................................................................... 24
1.4. Disassembly of vatech A9(PHT-30CSS) Covers .......................................................................... 32
Chapter 2. CT Image Optimization..............................................................................................54
2.1. Geometry information..................................................................................................................... 54
2.2. Equipment default values .............................................................................................................. 55
2.3. CT Sensor Calibration .................................................................................................................... 58
2.4. CT Bad Pixel Verification................................................................................................................ 71
2.5. CT Geometry Calibration................................................................................................................ 73
2.6. CT Collimator Alignment ................................................................................................................ 98
2.7. DAP Calibration............................................................................................................................. 103
2.8. CT Number Calibration ................................................................................................................. 107
Chapter 3. CT Image Evaluation ...............................................................................................116
3.1. Spatial Resolution(MTF) evaluation .............................................................................................116
3.2. Contrast evaluation........................................................................................................................118
3.3. Noise evaluation............................................................................................................................ 120
3.4. Homogeneity evaluation............................................................................................................... 121
3.5. CT Number Accuracy evaluation................................................................................................. 122
3.6. High Contrast Resolution evaluation.......................................................................................... 124
3.7. Low Contrast Resolution evaluation........................................................................................... 126
3.8. Slice Thickness Evaluation .......................................................................................................... 127
3.9. Collimator Alignment Evaluation................................................................................................. 128
Chapter 4. PANO Image Optimization ......................................................................................130
4.1. Geometry information................................................................................................................... 130
4.2. Equipment default values ............................................................................................................ 131
4.3. PANO Sensor Calibration ............................................................................................................. 131
4.4. PANO Collimator Alignment......................................................................................................... 139
4.5. PANO Collimator Speed Alignment............................................................................................. 142
4.6. PANO Geometry Calibration ........................................................................................................ 148
4.7. Vertical Laser Beam Alignment ................................................................................................... 153
Chapter 5. PANO Image Evaluation ..........................................................................................154
5.1. Line Pair Resolution evaluation .................................................................................................. 154
5.2. Low Contrast Resolution evaluation........................................................................................... 155
5.3. Noise evaluation............................................................................................................................ 156
5.4. Homogeneity evaluation............................................................................................................... 157
5.5. Collimator Alignment Evaluation................................................................................................. 158
Chapter 6. CEPH Image Optimization .......................................................................................160
6.1. CEPH Sensor Calibration ............................................................................................................. 160
6.2. CEPH Geometry Calibration ........................................................................................................ 173
6.3. CEPH Collimator Alignment......................................................................................................... 181
6.4. How to use V.I.P.S.......................................................................................................................... 185

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Chapter 7. CEPH Image Evaluation...........................................................................................192
7.1. Lateral Mode Start Position Evaluation ...................................................................................... 192
7.2. PA Mode Start Position Evaluation ............................................................................................. 194
7.3. Line Pair Resolution Evaluation .................................................................................................. 196
7.4. Low Contrast Resolution Evaluation .......................................................................................... 197
Chapter 8. How to Upgrade Your Firmware ..............................................................................198
8.1. Firmware Upgrade Procedure (Ethernet Communication) ....................................................... 198
8.2. Installing Firmware Upgrade Software (Serial Communication).............................................. 200
8.3. Firmware Upgrade Procedure (Serial Communication)............................................................ 201
8.4. Checking Firmware Version (Serial Communication) ............................................................... 207
8.5. Appendix........................................................................................................................................ 208
Chapter 9. Command-List Guide ...............................................................................................213
9.1. Communication Protocol ............................................................................................................. 213
9.2. vatech A9(PHT-30CSS) Command-List....................................................................................... 215
9.3. Procedure for using remote exposure function ........................................................................ 222
9.4. Error Message List........................................................................................................................ 224
Chapter 10. Console software error message List ......................................................................226
10.1. Hardware Error Code .................................................................................................................... 226
10.2. Software Error Code ..................................................................................................................... 229
10.3. Acquisition Module Error Code ................................................................................................... 234
10.4. Image Processing Error Code ..................................................................................................... 235
10.5. Stitching SW Error Code .............................................................................................................. 238
Chapter 11. Dose Measurement Guide........................................................................................239
11.1. Using Dose Measurement Mode.................................................................................................. 239
11.2. Removing the Sensor Sticker ...................................................................................................... 241
11.3. Removing the Rotating Unit Covers ........................................................................................... 242

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Before you begin
Conventions in This Manual
This Manual is intended only for VATECH Co., Ltd. authorized engineers only to avoid personal
injury and damage. VATECH Co., Ltd. holds no liability for the problems caused by unauthorized
engineers.
To effectively describe safety information, the following signs are used in this manual:
WARNING
Critical application information that could result in
critically severe injury or damage on both operator
and equipment is described.
CAUTION Important application instructions that could result in
serious personal injury or equipment damage are
described.
IMPORTANT Necessary instructions or application information are
indicated.
NOTICE Useful information or possible harmful situations are
indicated.
RADITATION Radioactivity sign to signify the radiation hazard.

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Safety Information
X-rays can be dangerous if not used properly, followed by safety instructions. All safety instructions
and warnings must be carefully observed to guarantee the maximum protection of technicians from
X-Ray hazards. To operate and service the device, follow the instructions contained in this manual.
Operator Qualifications
This equipment can only be operated or serviced by VATECH
authorized engineers who are fully trained. To operate this
equipment, all operators must:
• have read and understood the Technical manual before
application.
• be familiar with the fundamental structures and functions of
the equipment with enough experience.
• Only VATECH authorized operator can handle the electrical
circuit board, and an understanding of the electric and
electrical system is required.
Be able to recognize operation malfunction and implement
appropriate measures to take care of irregularities.
General Safety Precautions
• To operate and service the device, following instructions,
Note, Important, Caution, and Warning must be carefully
• Do not place any objects within the equipment operational
boundary. It can physically damage equipment.
• Ensure that this medical equipment is kept away from
water, moisture, or foreign substances at all times.
• The sudden change of temperature may affect equipment
operation conditions by causing condensation. Wait until
the equipment reaches room temperature then turn it on.
This product may only be operated with VATECH original
accessories or third-party accessories only approved by VATECH
Co., Ltd.

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Equipment Safety Instructions
This electro-medical device contains high voltage and current flowed parts, and the following
instructions must be followed to avoid critical damage to the body and equipment.
Electrical Safety Caution
• The equipment and PC should be connected to a common
protective earth. Confirm that the equipment is well-
grounded.
• High voltage and current flows throw equipment. Turn off
equipment power and wait at least 2 minutes before the
operation begins.
• Do not connect this equipment to any device without
authorization from VATECH Co., Ltd.
• Do not connect this equipment to a Multiple Portable
Socket- Outlet (MPSO) or extension wires
• Keep in mind that MCU boards are electrically sensitive
that operators need to wear shielding gloves while
operating.
• The only part that can be replaced by the users is the input
fuses. Check if the fuses comply with the manufacturer’s
specifications.
Mechanical Safety Caution
• Be aware that fingers or parts of your body are not shut in
the equipment.
• If a problem occurs during operation, immediately press the
red emergency stop button to stop equipment operation
and cut off all power to the equipment.
• Never touch the patient while touching the connector of
SIP/SOP.
• While adjusting the patient, ensure that the laser beam is
not directed at the patient’s eyes.
• Never expose the equipment to liquids, mists, or sprays.
Any liquid may cause an electrical shock or otherwise
damage the system.
• Do not use spray cleaners on the equipment to avoid fire.
• Do not use solvent aerosol or spray cleaning agents
directly on the surface of the equipment. It can damage
equipment, including the LCD panel.

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Radioactive Warnings
It is important to read this manual carefully and strictly abide by all warnings and cautions
stated. Since rules and regulations concerning radiation safety differ by country, it is the
users’ responsibility to comply with all applicable rules and regulations concerning radiation safety
and protection in their area.
Radiation Safety Caution
• The equipment must be housed inside an X-ray shielded room.
•
Or operators should use a shielding plate to minimize radiation
exposure while operating the system.
• The equi
pment exposes radioactive rays, and only specialized
engineers can operate the system. Read and understand related
regulations and warnings.
•
Press the emergency button to stop equipment malfunction while
image capturing.
• The patient must wear a lead apron with neck and thyroid protection
during X-ray exposure.
•
The only patient can remain in the shielding room during image
capturing. Do not enter the X-ray exposing area without protection.
• Children and pregnant women must consult with a doctor before X-
ray exposure.

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Pre-check points for Service Technician
The following checkpoints must be confirmed before performing the next procedure.
No. Check Point Pass Fail
1Do the equipment power, and PC condition work fine? □□
2Is the power off before the equipment repair begins? □□
3Is the voltage range indicated back of the equipment observed
properly?
□□
4Is the equipment grounding connection working fine? □□
5Are there any unnecessary accessories that can affect the X-ray
exposure condition?
□□
6Are at least two operators ready to start operation with enough
understanding of the equipment?
□□
7Are all required tools ready? □□

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Chapter 1. Hardware Part Service Guide
1.1. vatech A9(PHT-30CSS) System Block Diagram

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1.2. vatech A9 (PHT-30CSS) Board Configuration
The position of the board mounted on the equipment is as follows.

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1.2.1. Vertical Frame Part

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The following boards are mounted on the vertical unit.
MCU028 board
Ethernet Grabber
Power board
Noise Filter

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1.2.1.1 Ethernet Grabber
Function • 12V/24V DC Input
• RS232 to MCU
• CAN to MCU (Reserve)
• 2 Optic signal input (Tx 1550/Rx 1310)
• 1 G-Ethernet output
• 4Gbyte memory

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1.2.1.2 Main MCU BOARD (MCU028)
Function • LAN communication to PC
• CAN communication to Sensor, Inverter, Key Pad
• Motor control
-Rotator 1 axis
-Generator Tilting
-Column Up/Down
-Collimator Moving
-Sensor Moving
-CEPH Sensor Moving
• Fan control
• Sensor Power On/ Off control
• Laser On/Off control
• X-Ray control
• X-Ray Warning Lamp control
• Exposure Switch detection
• MP3 control
• Sync Pulse Generation when exposing the X-ray
• Lighting LED control

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1.2.1.3 Power Board (VT-PWR-016)
Function • 24V DC Output : System, Motor, Sensor, Inverter
• 380V DC Output : Generator
• Emergency Switch Input : Power Shutdown
1.2.1.4 Noise Filter

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1.2.2. Handle Unit
Remove the cover from the Handle Unit as shown in the image below.
Handle frame

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Remove the cover from the Handle frame as shown in the image below.
1.2.2.1 Touch Keypad
Circuit Breaker
(UP/DOWN switch)
Speaker
Emergency
Switch
ORG
Sensor

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1.2.3. Rotating Unit Part
Disassemble the ROTATOR PANO as shown in the image below.
GENERATOR part
SUB056
Inverter
Sensor
Sensor Motor ASSY

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1.2.3.1 Sensor Interface (SUB056)
Function • Control Signal Interfacing of
: Sensor moving motor, Rotator motor, and the Sensor
• Control Power Interfacing of Sensor
1.2.3.2 Inverter
Function •Supply High DC/AC Power