Revision:1.0(2023-01-12)
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2. Check whether the fault exists on a specific probe groove. If yes, clean the probe groove. If the
fault persists after cleaning, replace the probe board assembly. For details, refer to 7.9.2
Disassembly and Assembly.
3. Check whether the fault exists on a specific probe. If yes, replace the probe.
4. If the fault appears on all probes, cross-test or replace the main board. For details, refer to
7.13.2
Disassembly and Assembly.
8.3 Troubleshooting for Errors Without Alarm
Reporting
8.3.1 Power-on Errors (AC Power Supply)
88..33..11..11 AC Indicator: Off
Fault Description
AC Indicator: Off
Involved FRU
Retractable AC Cable Assembly and AC-DC Board
Severity
Suspension
Handling Level
Contact the device provider for onsite handling.
Possible Cause
1. The external power supply is abnormal.
2. The Retractable AC Cable Assembly is damaged (low possibility).
3. The AC-DC Board is faulty.
Resolve Path
1. Use the multimeter to check whether the power supply of the power outlet is normal.
2. Use the multimeter to check whether the power cord output is normal.
3. Use the multimeter to check whether the voltage output from the power input assembly to the
AD-DC power board is normal (Note: The power input assembly only serves as a power
connection, and the possibility of failure is extremely low).
4. If the above factors are eliminated, the AC-DC power board is faulty.
Diagnostic Ultrasound System
Service Manual
8 Troubleshooting
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