Revision:1.0(2023-01-12)
397
2. The CPU outputs signals.
3. Signals output by the CPU are normal, but the display conversion board or signal cable
connection is abnormal (low possibility).
4. Circuit identification in the display is abnormal.
Resolve Path
1. If the fault persists after the external display is connected through HDMI, the CPU or main
board is faulty. In this case, replace the PC module assembly or main board assembly.
2. If the display is normal after the external display is connected through HDMI, the display
conversion board, display conversion board signal cable, or display is abnormal.
Solution
1. If the fault persists after the external display is connected through HDMI, the CPU or main
board is faulty. In this case, replace the PC module assembly or main board assembly. For
details, refer to 7.11.2
Disassembly and Assembly or 7.13.2 Disassembly and Assembly.
2. If the display is normal after the external display is connected through HDMI, remove the
display and check whether the display conversion board and display conversion board signal
cable are damaged. If so, replace the damaged part. For details, refer to 7.14.2
Disassembly
and Assembly
and 7.5.2 Disassembly and Assembly.
3. If no physical damage occurs, replace the display first. For details, refer to 7.2.2
Disassembly
and Assembly
.
8.3.7 IO Port System Errors
88..33..77..11 Both speakers are mute.
Fault Description
Both speakers are mute.
Involved FRU
PC module assembly and main board assembly
Severity
Maintenance as soon as possible
Handling Level
Contact the device provider for onsite handling.
Possible Cause
Diagnostic Ultrasound System
Service Manual
8 Troubleshooting
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