Revision:1.0(2023-01-12)
383
Solution
1. Repair the external power socket.
2. Replace the Retractable AC Cable Assembly. For details, refer to 7.33.2
Disassembly and
Assembly
.
3. Replace the AC-DC power board. For details, see 7.32.2
Disassembly and Assembly.
88..33..11..22 The AC indicator is on, and the power indicator has no response
after the power key is pressed.
Fault Description
The AC indicator is on, and the power indicator has no response after the power key is pressed.
Involved FRU
On/off Button Board (low possibility), trolley spring cable, trolley battery management board, and
Main Board Assembly
Severity
Suspension
Handling Level
Contact the device provider for onsite handling.
Possible Cause
1. The On/off Button Board is abnormal (extremely low possibility).
2. The trolley spring cable is abnormal (low possibility).
3. The battery management board is abnormal.
4. The Main Board Assembly is faulty.
Resolve Path
1. Check whether the charging indicator of the battery pack is on.
2. Check whether indicators 5VSTB and 3V3STB (1/4) on the rear of the main unit box are on.
3. If the above factors are eliminated, it is probably that the main board or On/off Button Board is
faulty (extremely low possibility).
Solution
1. If the charging indicator is off, it is probably that the trolley battery management board is faulty.
Diagnostic Ultrasound System
Service Manual
8 Troubleshooting
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