xxiii
8.3.3.1 When the on/off button is pressed and the main screen displays "Diagnostic Ultrasound
System", but the system cannot continue..........................................................................................388
8.3.3.2 The system displays "Diagnostic Ultrasound System" and then the screen goes black .................388
8.3.3.3 The system displays the Doppler startup screen, but no further step can be performed.................389
8.3.4 Image Errors ................................................................................................................................ 390
8.3.4.1 The probe can be recognized but no echo signal is detected in the ultrasound image
region...............................................................................................................................................390
8.3.4.2 Dark or bright strips exist on the B image .....................................................................................391
8.3.4.3 There is noise on the B or C image...............................................................................................392
8.3.5 Probe Recognition Errors ............................................................................................................ 393
8.3.5.1 A Single Probe Cannot Be Recognized by Any Probe Port ...........................................................393
8.3.5.2 No Probes Can Be Recognized....................................................................................................393
8.3.6 Display and Related Errors.......................................................................................................... 394
8.3.6.1 The device startup is normal, a black screen occurs on the main display, and the display
indicator is green. .............................................................................................................................394
8.3.6.2 The device startup is normal, a black screen occurs on the main display, and the two display
indicators are off...............................................................................................................................395
8.3.6.3 The device startup is normal, the main display displays "No Signal", and the display signal
indicator is orange ............................................................................................................................396
8.3.7 IO Port System Errors.................................................................................................................. 397
8.3.7.1 Both speakers are mute. ..............................................................................................................397
8.3.7.2 Only a single speaker is mute.......................................................................................................398
8.3.7.3 The USB port failed to recognize the connected USB drive...........................................................398
8.3.7.4 The wired network is disconnected or abnormal. ..........................................................................399
8.3.7.5 Failed to recognize WIFI. .............................................................................................................400
8.3.7.6 The main display is normal and no information is displayed on the external HDMI display.............401
8.3.7.7 The main display is normal. The external HDMI resolution is inappropriate. ..................................402
8.3.7.8 The main display is normal and the HDMI external display has strips or blinks..............................402
8.3.8 ECG Error .................................................................................................................................... 403
8.3.8.1 Failed to enable ECG functions....................................................................................................403
Diagnostic Ultrasound System
Service Manual
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