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6. High Voltage Protect Circuit
High Voltage Regulation and Output Circuit
G1 Voltage (-33Vdc)
HV Protect Circuit
HV Protect circuit will be activated by the Microprocessor when the signal at HV DET, Microprocessor pins#18 reaches a
+5vdc level. HV DET indicates the level of the primary current developed by the 270V winding of the FBT through R543,
Beam Current Protect
Troubleshooting Hints
No HV / No Power
No G1 Voltage
Protect Malfunction
SHUTDOWN LOG TABLE
Bit Register value
Shutdown Mode
Comment
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17
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