Failure analysis:
1) Diagnostic instrument CW can only be used in cardiac conditions, the rest of the conditions without CW function, so the CW board may be damaged.
2) When the failure occurs, the working voltage of CW measured by the attached power box drops significantly, and the failure may be related to the attached power box.
3) This fault may also be caused by the CW signal trigger and communication.
4) Heart probe Phased array probe) is composed of PW and CW, the heart probe may be damaged.
Troubleshooting: Replace the attached power supply box and the related PCB are ineffective, replace the heart probe, and then there is no dead within a month, the problem is solved.
Troubleshooting: Diagnostics only after the boot repeatedly self-test, can not enter the ultrasound system.
Failure analysis:
1) It may be that the operating system is damaged.
2) No system is detected after powering on, the main control board may be damaged.
3) Cannot read the operating system file, may be hard disk damage.
4) Other factors cause the external power supply is not normal, can also cause the system can not start.
Troubleshooting; on-site measurement of the utility and voltage regulator voltage are normal, reinstallation of the operating system failed, open the machine found that the power start DISK light has not been bright, replace the hard disk failure to solve.
Troubleshooting: The diagnostic instrument sometimes has colorful stripes in FLOW mode.
Failure analysis:
1) First of all, consider is caused by mutual interference between devices.
2) It may be caused by the broken wire of the probe
3) It may be caused by the failure of the blood flow board.
Troubleshooting: the appearance of color streaks sometimes, most of the phenomenon is caused by the same working frequency equipment generated by the electromagnetic wave interference caused by each other, turn off the other work of the ultrasound, if the problem persists, and the use of the two-dimensional image of the normal, then you can rule out the probe failure to replace the color plate, and then a month FLOW mode did not appear color streaks, the problem is solved.
Trouble 4: Diagnostic instrument power on after the beeping sound.
Failure analysis:
1) The audio output speaker is damaged.
2) The audio output board or Doppler board is damaged.
3) Consider possible short-circuit places, such as keys stuck, etc.
Troubleshooting: Check the keyboard control area, found that the keypad area of a letter key stuck, press the keypad area of the COMMENT key, the letter has been appearing in the screen, reset after the disappearance of the beeping failure to solve the problem.
Trouble 5: Diagnostic instrument image fault black shadow.
Failure analysis:
1) Transmit and receive signal probe damage.
2) The probe interface board is damaged.
3) The image processing board is damaged.
4) The gain adjustment is damaged.
Troubleshooting: It is found that both the abdomen, heart, small organs probe in the use of the same fault, the replacement of the probe interface board after the image did not improve the adjustment of the STC gain of the third, the fourth two regulators were non-responsive and gain hysteresis, the replacement of the STC gain the image returned to normal, the fault is solved