Primedic Defi B Service Manual Work ((top))
| Error | Meaning | Service action | |-------|---------|----------------| | E-001 | Battery low | Replace battery | | E-105 | Capacitor charge failure | Check capacitor and charging circuit | | E-201 | ECG frontend error | Check patient connector/PCB | | E-301 | Therapy relay stuck | Internal repair required |
Visual inspection (passed—no swollen caps or burnt traces). Step 2: Battery voltage under load (passed—11.9V, well within 11.0-12.6V). Step 3: Check MOSFET Q7 (gate drive signal). This required an oscilloscope and the manual’s specific pinout diagram on page 187. primedic defi b service manual work