CHISON 8300 Service Manual Version number A0

CHISON 8300 Service Manual A0

TABLE OF CONTENTS CHAPTER 1 GENERAL DESCRIPTION...- 3 1-1 Summarization...- 3 1-2 Content of service manual...- 3 1-3 Safety...- 3 1-3-1 Warning...- 3 1-3-2 Classification...- 5 1-4 EMC(Electromagnetic Compatibility)...- 5 1-4-1 EMC performance...- 5 1-4-2 Notice upon installation of product...- 6 1-4-3 General Notice...- 6 1-4-4 Countermeasures against EMC related-issues...- 6 1-4-5 Notice on service...- 7 1-5 Contact address...- 7 CHAPTER 2 INSTALLATION...- 8 2-1 PRE-Installation...- 8 2-1-1 Overview...- 8 2-1-2 The requirement of power...- 8 2-1-3 Physical Specification...- 8 2-2 Installation...- 9 2-2-1 Overview...- 9 2-2-2 Average installation time...- 9 2-2-3 Checking the components...- 10 2-2-4 Unpacking CHISON 8300...- 10 2-2-5 Assembling CHISON 8300...- 10 2-2-6 Installation of optional accessories...- 11 2-2-7 Adjustment of monitor contrast and brightness...- 11 2-3 Electrical safety tests...- 11 2-3-1 Outlet test wiring Arrangement...- 12 2-3-2 Grounding impedance test...- 12 2-3-3 Chassis Leakage Current Test...- 13 2-3-4 Probe Leakage Current Test...- 15 2-3-5 When there’s too much Leakage Current…...- 18 CHAPTER 3 SYSTEM OUTLINE...- 20 3-1 Overview...- 20 3-2 Structure...- 20 3-2-1 Structure...- 20 3-2-2 Main unit dimensions...- 20 3-2-3 Rear Panel...- 21 3-2-4 Control Panel...- 21 3-3 Electric performance...- 22 3-3-1 Power supply...- 22 3-3-2 Electrical socket requirement...- 22 3-4 Storage and operating requirements...- 22 3-5 Options...- 23 CHAPTER 4 FUNCTIONAL CHECK...- 24 4-1 Overview...- 24 4-2 Procedures of Functional Check...- 24 4-2-1 Monitor Display after turning on...- 24 Confidential

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CHISON 8300 Service Manual A0

4-2-2 Basic control...- 25 4-2-3 Tissue-imitated ultrasonic phantom examination...- 26 4-3 Diagnosis...- 26 4-3-1 Keyboard Test...- 26 4-3-2 Image Memory Test...- 26 4-4 Maintenance and Adjustment...- 26 CHAPTER 5 SYSTEM ARCHITECTURE...- 27 5-1 Overview...- 27 5-2 CHISON 8300 System...- 27 5-3 System block diagram...- 27 5-4 Naming of Circuit Boards...- 27 CHAPTER 6 REPLACING COMPONENTS...- 27 6-1 Assembly of up cover...- 27 6-2 Disassembly of rear panel...- 27 6-3 Disassembly of the circuit board...- 27 6-3-1 Disassembly the DSC board... - 34 6-3-2 Disassembly the TXRV board and probe convert boards...- 34 6-3-3 Disassembly the power supply...- 34 6-4 Disassembly of power monitor board...- 27 6-5 Disassembly of metal cover of fans ...- 27 6-6 Disassembly of keyboard ...- 27 CHAPTER 7 PERIODIC MAINTENANCE...- 29 7-1 Overview...- 34 7-2 Periodic Maintenance...- 34 7-3 Procedure...- 34 7-3-1 Visual inspection...- 34 7-3-2 Cleaning...- 35 7-3-3 Testing...- 36 7-4 Trackball maintenance...- 36 7-4-1 Removal of the retainer ring...- 36 7-4-2 Cleaning the trackball...- 36 7-4-3 Fixing the trackball and retainer ring...- 37 -

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CHISON 8300 Service Manual A0

Chapter 1 General Description 1-1 Summarization CHISON 8300 is a portable digital ultrasonic diagnostic B/W system adopting the fully digital beam-former technology, which owns excellent upgradeable property. Its digital design enables the system to the maximum flexibility in scanning mode and probe selection at the scope of whole operate spectrum. It is a linear and convex scanning system with a 3.5MHz C60613S convex probe as the standard configuration, and 7.5MHz L40617S linear probe, 6.0MHz C12616S micro-convex transvaginal probe, 3.0Mhz C20613S micro-convex cardiac probe and 7.5Mhz L40617S-REC Rectal probe as optional. This system can be used for examination and diagnosis of abdomen, OB/GYN, urology, cardiology and small parts etc.

1-2 Content of service manual This service manual contains the way to repair CHISON 8300 ultrasound scanning system, see below: 1.

Introduction: Including summarization, Note, EMC and contact address.

2.

Installation: Including electric request before installation and CHISON 8300’s installation process with whole bills of installation and examination.

3.

System figure: including the description of mechanical, electric, environment property, peripheries and accessories.

4.

Function examination: including function examination for repairing and regular maintenance after installation.

5.

System configuration: composing configuration of system.

6.

Termly maintenance: offer the termly maintenance process of 8300.

1-3 Safety

1-3-1 Warning

Warning! Please read the below Note carefully! 1.

Read User Manual of 8300 carefully before operating the machine and get it conveniently.

2.

Although emissive energy of CHISON 8300 transducer is within standard extent, it is necessary to avoid the unwanted ultrasound radicalization. Only the trained person can operate or repair CHISON 8300.

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CHISON 8300 Service Manual A0

3.

Using appointed power cord to against electrical shock, connect power pin to the fixed socket with ground protection. Please do not use commutator. System should work within the rating voltage.

4.

Protect the probe as it is easy to be damaged. And there will be danger of electricity shock when the damaged probe touch the patient. No good image will get through damaged probe. The damaged probe must be discarded, using of repaired is prohibited. Do not touch the probe surface with the acuity objects or knock the probe.

5.

Do not put any liquid over or on the top of mainframe because when the liquid contacts with electriferous parts, there will be electrical shock. There are no spare parts for operator, and only trained service person can open the panel to repair the system, there will be circuit damage when touching inside circuit unbendingly.

6.

Do not use electric vibrating generator when using CHISON 8300.

Note Use the machine in the prescriptive condition; otherwise it will disturb radiogram and TV. In order to avoid this situation, please use the machine according to the User Manual and Service Manual. Fig1-1 describes the usage and position of safety labels and offer other important information of this machine. Table 1-1 Warning labels

Label/Symbol

Description

Nameplate and electrical

 Manufacture and address

parameter

 Manufacturing date

Position Back of mainframe

 Type and serial number  Electrical parameter Type/grade label

Indicate the degree of safety and

Back of mainframe

protection Equipment authentication labels

Indicate to have passed the trial-

Back of mainframe

produce register of national medicament government. Type BF device（Symbol is the

Exterior

person in the frame）indicate the type B device equipped with the type F applied parts(usually to hang some probes) Class Ⅰequipment means the equipment not only has the basic insulation, but also has the grounded to Confidential

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Base ( inside the system)

CHISON 8300 Service Manual A0

provide protection against the electrical shock.

Warning, high voltage

CRT, transformer (Inside the system)

Power is on.

Front panel(on the power switch)

Power is off.

Front panel(on the power switch)

1-3-2 Classification Anti-electrical shock type: Class I equipment *1 Level of anti- electrical shock protection: Type BF equipment *2 1. Class I equipment* This means the equipment not only has the basic level insulation, but also the grounded to provide protection against the electrical shock. This additional protection measure can prevent the exposed metal to be electrification when insulated malfunction. 2. Type BF equipment* The type B equipment equipped with the Type F applied parts can provide the protection against the electrical shock. When adding 1.1 times voltage between applied parts and ground, it will not pass the permissible leakage current in the singularity malfunction condition.

1-4 EMC(Electromagnetic Compatibility)

1-4-1 EMC capability The electromagnetic interfere to other device through interspace transmission or the linked cable, depends on the specialities of electric device. EMC glossary shows that the device has the capability not only to avoid the electromagnetism interfere from other device, but also has the capability not to affect others because of its own electromagnetism interfere. This product is designed strictly according to EMC for medical electric device.

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CHISON 8300 Service Manual A0

In order to guarantee EMC capability of device, please install the machine according to service manual. Pay attention to the Note 1-4-2. If there is something wrong related to EMC, please resolve it according to the section 1-4-4. 1-4-2 Notice upon installation of product 1.

Use the power cord supplied or appointer by CHISON. The power plugs must connect to the fixed power socket with ground.

2.

Connect three-pin to three-pin socket, do not use the commutator of three-pin to two-pin.

3.

Keep the machine far away from the other electronical-device.

4.

Use the cable supplied or appointed by CHISON and connect it according to the installation process. For example, separate the power cord from signal cord.

1-4-3 General Notice 1.

Only the appointed external devices can connect with this system and can not affect EMC capability.

2.

Note when doing the modification:

a)

Do not change the collocation of this system. As such modification will worsen EMC capability.

b)

Modification of collocation including:



Modification of cable ( length, material, connection and so on.)



Modification of installation/composition of system



Modification of configuration/components.



Modification in the way to fix system/components( turn on or off the cover board, close the bolt of cover board)

3.

Close all the cover boards when operating, if one cover board is on, make it off before continuing the operation in spite of any reason. It will affect EMC capability when the cover board is on.

1-4-4 Countermeasures against EMC related-issues It is usually difficult to resolve EMC problems; it takes a lot of time and cost, and make the electromagnetism interfere to other device. 1.

Keep the system far away from other device, that can decrease electromagnetism interfere.

2. Change the relative position between this system to other devices, that can decrease electromagnetism interfere. 3. Change the position of other device’s power cord/signal cord, that can decrease electromagnetism interfere. 4. Change the power supply route of other device, that can decrease electromagnetism interfere.

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1-4-5 Notice on service Close the bolts after repairing, flexible bolts will decrease EMC capability.

Note The ultrasound system should be used far away from the electricity generator, cellphone, amphibious transceiver, broadcasting station and electromotion control toy etc to avoid the capability of 8300 to pass the regulation. Turn off power supply when such device beside 8300. It is responsible for the service person of CHISON 8300 to guide the technician who is related to system, patient and other persons to follow these regulations.

1-5 CONTACT ADDRESSES Do not repair the machine by customer themselves, if there is something wrong with it, please contact with our service center. If the repairing engineer needs additional information to repair this machine, please contact as follows: CHISON MEDICAL IMGAING CO., LTD No.8.xiangnan road, shuofang,new district,wuxi,Jiangsu Post Code: 214142 Customer service center hot line (0086)510-85310593 Repair hot line (0086)510-85310593,85311707 Fax: (0086)510-85310726 Email: [email protected]

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CHISON 8300 Service Manual A0

Chapter 2 Installation 2-1 PRE-Installation

2-1-1 Overview All problems including electric, operation and circumstance before installation are described in this chapter. All the image functions which customer needs get through mainframe and probe. The front panel has the function of maximizing images and inputting database by operator. 2-1-2 The requirements of power Check the following electrical line’s parameters a week before installation. It is better to use Drantez Model 605-3 power cord monitor . Parameter

Rating

Power requirement：

AC 230V ±10%, 50Hz ±1Hz, grounded (Or AC 110V ±10%, 60Hz ±1Hz, grounded when the customer ordered for 110V AC ±10% input machine.)

Power consumption:

No greater then 160VA

Power supply twinkling change ：

Less than 25% of regular peak value, less than1ms of any instant-change status, including frequency、synchronization、asynchronism or nonseasonal status’s change.

Attenuation surge ：

Less than 15% of peak value voltage, less than 1ms.

2-1-3 Physical Specification The weight of CHISON 8300 is about 15Kg (main unit, not including the probe). Working Condition Table 2-1 Working condition Conditions Operation

Preservation

Transportation

5℃～40℃

-5℃～40℃

-40℃～55℃

Parameter Temperature

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Less than 95%，no Humidity

30%--80%，no condensation

Less than80%，no condensation condensation

Atmosphere 86kPa～106kPa

86kPa～106kPa

50kPa～106kPa

pressure

To patient: It is better for patient to keep the room temperature in the range of 20°C - 26°C(68°F - 79°F), as the humidity 50% 70%. EMI The radio frequency、 magnetic field、space twinkling status and electrical net is easy to affect ultrasound device. The electrical equipment may cause the space electromagnetism interfere or electrical net electromagnetism interfere. The resource of the electromagnetism interfere including medical laser、cautery electron gun、 computer、 electric fan、 Gel refiner、 microwave oven and cellphone, and broadcaster、big truck also. Read the following defend measurements carefully before installing the device: 1.

Connect all the devices’ power cord to the fixed power socket with ground.

2.

Make sure to connect the place of equipment with the ground of building.

3.

Keep the device far away from other electronic device.

If make sure or doubt that there is something wrong about EMI, deal with the jamming devices as follows: 1.

Move the devices far away from jamming devices.

2.

Change the position of device in the room.

3.

Connect the power cord to another power socket.

4.

Move the device’s power cord and signal cord.

Make sure to screw down bolts after installing the device and repairing.

2-2 Installation

2-2-1 Overview This section describes the steps to install CHISON 8300. 2-2-2 Average installation time It takes about 1 hour to install CHISON 8300.

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2-2-3 Checking the components Check the device carefully when getting a new one, if there is hard up of parts, contact through the way in the Chapter 1.

Warning 1.

Connect CHISON 8300 to the right grounded power socket to avoid electrical shock, do not use three-pin to two-pin commutator , that will destroy the grounded safety.

2.

There are no spare parts of an apparatus for operator. Do not open the outer frame or panel in order to avoid electrical shock. Only the service person can do the servicing when there is some wrong with the device except supply socket.

3.

Make sure the back panel is well ventilated.

4.

Do not hurt the rubber of probe surface, using of damaged probe is prohibited.

5.

Although the emissive ultrasound energy is in the prescriptive range, it is better to avoid unnecessary ultrasound radiation.

2-2-4 Unpacking CHISON 8300 1.

Snip the package cingulum around the box.

2.

Remove the adhesive tape.

3.

Open the paper box.

4.

Take out the User manual, probe box, ultrasound gel and power cord.

5.

Take the device out of the package.

6.

Wipe off the plastic bag around device.

2-2-5 Assembling CHISON 8300 Assembling system 1.

Get the probe out of package and put in into the special probe holder.

2.

Make sure the mainframe off before connecting probe.

3.

Make sure any probe connects to the following socket:

a.

Turn the handle key to the position of 3 o’clock.

b.

Connect the linker of probe to the probe socket of main unit.

c.

Turn the handle key to the position of 12 o’clock.

4.

Connect the inner pin to AC socket in the back panel of main unit, connect another pin to the hospital power socket with the regular press output, do not use three-pin to two-pin commutator, that will destroy the grounded safety.

5.

Open the keyboard through the lock on the top of main unit.

Note Do not move or lift mainframe when dropping the keyboard.

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CHISON 8300 Service Manual A0

2-2-6 Installation of optional accessories 1.

Connect VGP to suitable power socket, connect Video out port to Video In of VGP with BNC-BNC cable in the

back panel of CHISON 8300.

Illustration 2-1 Install the accessories

2-2-7 Adjustment of monitor contrast and brightness

Adjust contrast and brightness according to the brightness of room after turning on the main unit.

Note Check the function in Chapter 4 before deliver the goods to customer.

2-3 Electrical safety tests The following tests are performed at the factory and should be repeated at the sites as part of periodic maintenance. These tests are: grounding continuity, shell Leakage Current, probe Leakage Current. All measurements are made with an Electrical Safety Analyzer Model Dale 600/600E built by Dale Technology Corporation or equipment device. Recommended Tools

Device Number 46-285652G1

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Table 2-2 Recommended Tool Name Electrical Safety Analyzer DALE 600

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Description For 110V Units

CHISON 8300 Service Manual A0

46-328406G2

Electrical Safety Analyzer 600E

For 230V Units

2113015

Leakage Current Ultrasound Kit

For 110V and 230V Units

2-3-1 Outlet test wiring Arrangement Test all outlets in the area for proper wiring arrangement by plugging in the Dale 600/600E and noting the combination of lights that are illuminated.

Combination of Lights

Hot/Ground

Reversed

Open Hot

Open Ground

Reverse Polarity

Correct Wiring

Condition

Illustration 2-2 Power socket test

Note No outlet tester can detect the condition where the Neutral (grounded supply) conductor and the Grounding (protective earth) conductor are reversed. If later tests indicate high leakage currents, this should be suspected as a possible cause and the outlet wiring should be inspected. 2-3-2 Grounding impedance test

Caution The patient must not be contacted to the equipment during the test because it may cause electric shock. Measure the resistance from the third pin of the attachment plug to the exposed metal parts of the case ( See Illustration 23), this should be less than 0.2 ohms.

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CHISON 8300 Service Manual A0

OHMMETER Illustration 2-3 Grounding impedance test Measure Procedures Follow these steps to test the ground impedance. 1. Turn off the main unit CHISON 8300. 2. Plug the unit into the meter, and the meter into the tested AC wall outlet. (Refer Illustration 2-3) 3. Plug the black chassis cable into the meter’s “CHASSIS” connector and attach the black chassis cable clamp to an exposed metal part of CHISON 8300. 4. Set the meter’s “FUNCTION” switch to the RESISTANCE position. 5. Measure the ground wire resistance and write down and save the record of the results . 6. Set the meter’s “POLARITY” switch to the OFF (Center) position. 2-3-3 Chassis Leakage Current Test Definition Leakage current is the electrical current that could flow through the patient or sonographer should a ground wire break. The unit, the probes and all external peripherals must be tested. The test verifies the isolation of the power line from the chassis. The testing meter is connected from accessible metal parts of the case to ground. Measurements should be made with the unit ON and OFF, with the power line polarity Normal and Reversed. Record the highest reading of current.

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CHISON 8300 Service Manual A0

Illustration 2-4 Set up Chassis source leakage current Meter Procedures 1. Turn off the main unit of CHISON 8300. 2. Plug the unit into meter, and the meter into the tested AC wall outlet.

Illustration 2-5 Ground and Chassis leakage current test 3. Plug the black chassis cable into the meter’s “CHASSIS” connector and attach the black chassis cable clamp to an exposed metal part of 8300. (Refer Illustration 2-4) 4. Set the tester’s “Function” switch to CHASSIS position. 5. Take readings for various peak value of anchor point. See Table 2-3. Table 2-3 Chassis leakage current test conditions Test

Location

1

Mounting screw for probe receptacle

2

Rear Panel

3

Mounting screw on the handle

4

Mounting screw for peripheral plugged into unit

6. Keep a record of the results with other hand copies of PM data kept on site.

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CHISON 8300 Service Manual A0

Date sheet for Chassis Source Leakage Current Follow the foregoing test procedure. The test passes when all readings measure less than the value shown in Table 2-4 below. Table 2-4 Maximum allowance limit for Chassis source leakage surrent Country

Normal Condition

Open Ground

Reverse Polarity

Open Neutral

USA

N/A

0.3mA

0.3mA

N/A

Others

0.1mA

0.5mA

0.5mA

0.5mA

Caution When the meter’s ground switch is OPEN, do not touch the unit to avoid possible electric shock. Table 2-5 Data sheet for Chassis source leakage current Unit Power

Tester

Tester

Test 1 Probe

POLARIT

NEUTRAL

Connector

Y Switch

Switch

ON

NORM

OPEN

ON

NORM

CLOSED

ON

REV

OPEN

ON

REV

CLOSED

OFF

NORM

OPEN

OFF

NORM

CLOSED

OFF

REV

OPEN

OFF

REV

CLOSED

Test 2 Real Panel

Test 3 Mounting screw on the handle

2-3-4 Probe Leakage Current Test Description This test measures the current that would flow to the ground from any of the probes through a patient who is being scanned when he comes into contact with the ground surfaces. Measurements should be made with the ground open and closed, with power line polarity normal and reversed and with the unit OFF and ON. For each combination, the probe must be active to find the worst case condition.

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CHISON 8300 Service Manual A0

Illustration 2-6 Set up for Probe Leakage Current

Note Each probe will have some amount of leakage current, dependant on its design. Small variations in probe leakage currents are normal from probe to probe. Other variation will result from differences in line voltage and test lead placement. Meter Procedure using Probe Adapter and Saline Bath The dale 600/600E provides a method for testing probes independently from the system. The meter utilizes a probe adapter to apply common test potential to all connector pins. The probe’s imaging area is immersed in a saline solution along with a grounding probe from the meter to complete the current path. Saline solution is a mixture of water and salt. The salt adds a free ion to the water, making it conductive. Normal saline solution is 0.9% salt or 1/2 gram salt per 1 liter of water. If saline is not available, a mixture of 1 quart water with one or more grams of table sale, mixed thoroughly, will substitute.

CAUTION To avoid probe damaged and possible electric shock, do not immerse probes into any liquid beyond the level indicated in the operators manual. Do not touch the probe, conductive liquid or any part of the unit under test while the ISO TEST switch is depressed. Follow these steps to test each probe for leakage current. 1. Turn the main unit of 8300 OFF. 2. Plug the probe to be tested to the meter’s appropriate adapter. 3. Connect the probe to be tested to the meter’s appropriate adapter.(Refer Illustration 2-6) 4. Plug the saline probe into the meter’s CHASSIS connector.(Refer Illustration 2-6)

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CHISON 8300 Service Manual A0

Illustration 2-7 Transducer source leakage current test 5. Plug the probe adapter into the meter’s connector marked “EXTERNAL”. 6. Set the meter’s “FUNCTION” switch to EXTERNAL position. 7. Add the saline probe and the image area of the probe into the saline bath. 8. Have unit power ON for the first part; turn it OFF for the second half. 9. Depress the ISO TEST rocker switch and record the highest current reading. 10. Follow the test conditions described in TABLE 2-7 for every probe. 11. Keep a record of the results with other hand copies of PM data. General Procedure Follow these steps to test each probe for leaking current. 1. Turn the main unit of 8300 OFF. 2. Plug the unit into the test meter, and the meter into the tested AC wall outlet. 3. Plug the external probe into the meter’s EXTERNAL connector. 4. Set the meter’s FUNCTION switch to EXTERNAL position. 5. Connect the probe for test with the connector of the console. 6. Apply a liberal amount of gel to the probe’s lens. 7. Wrap the probe in aluminium foil, making sure there is good contact with its acoustic aperture. 8. Either suspend the probe by its cable or place it on an insulated surface. 9. Have unit power ON for the first part; turn it OFF for the second half. 10. Hold the external probe against the aluminium foil on the probe when the unit is ready to scan. 11. Depress the ISO TEST rocker switch and record when the unit is ready to scan. 12. Follow the test conditions described in the TABLE 2-7 for every probe. 13. Keep a record of the results with other hand copies of PM data.

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CHISON 8300 Service Manual A0

Data sheet for Transducer Source Leakage Current Follow the foregoing test procedure for every probe. The test passes when all readings measure less than the values shown in the table below: Table 2-6 Maximum allowance limit for probe leakage current Country

Normal

Open

Reverse Polarity

Open Neutral

Condition

Ground

USA

0.05mA

0.05mA

0.05mA

0.05mA

Others

0.1 mA

0.5 mA

0.5 mA

0.5 mA

Table 2-7 Data sheet for probe source leakage current Probe tested： 8300 Unit Power

Test Power Polarity

Tester Ground Switch

ON

NORM

ON

ON

NORM

CLOSED

ON

REV

ON

ON

REV

CLOSED

CLOSED

NORM

ON

CLOSED

NORM

CLOSED

CLOSED

REV

ON

CLOSED

REV

CLOSED

Measurement

2-3-5 When there’s too much Leakage Current… Chassis Fails Check the ground on the power cord and plug for continuity. Ensure the ground is not broken, frayed, or intermittent. Replace any defective part. Tighten all grounds. Inspect wiring for bad crimps, poor connections, or damage. Test the wall outlet and verify if it is grounded. Notify the user or owner to correct any deviations. Check the other outlets to see if they could be used instead.

Note No outlet tester can detect the condition where the white neutral wire and the green grounding wire are reversed. If later tests indicate high leakage currents, this should be suspected as a possible cause and the outlet wiring should be visually inspected. Probe Failure Replace the probe and try again. Peripherals Failure Confidential

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CHISON 8300 Service Manual A0

Tighten All ground connection screws. Inspect wiring for bad crimps, poor connections, loose screws or damage. Other Failure Begin isolation by removing the probes, external peripherals, then the on board ones, one at a time while monitoring the leakage current measurement. New Unit If the leakage current measurement tests fail on a new unit and if situation cannot be corrected, submit a Safety Failure Report to document the system problem. Remove the unit from operation.

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