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LIFEPAK 20/20e Defibrillator/Monitor Troubleshooting
Service Code Table (continued)
A01 System PCB A03 Power Module A07 Battery
Code Service Code Description Corrective Action
503a Bus error reported by USB UI channel 1. Clear error and perform PIP
2. Replace the A05 UI PCB
3. Replace the A01 System PCB
503b Bus error reported by USB therapy channel 1. Clear error and perform PIP
2. Replace the A04 Therapy PCB
3. Replace the A01 System PCB
503c USB host driver cannot create transfer descriptor 1. Clear error and perform PIP
2. Replace the A01 System PCB
503d USB host driver received message larger than
maximum allowed
1. Clear error and perform PIP
2. Replace the A01 System PCB
5040 Inconsistent RTC time Replace the A01 System PCB
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