3-24 P/N 13772-002
Section 3 Cirrus Design
Emergency Procedures SR22
High Voltage on Main Bus 2
M BUS 2 Warning
1. Main Bus 1 Voltage (M1).................................................... CHECK
If M Bus 1 Voltage is greater than 32 volts
2. Perform M BUS 1 Warning Checklist
3. Main Bus 2 Voltage (M2).................................................... CHECK
If M Bus 2 Voltage is greater than 32 Volts:
4. ALT 2 Master Switch ...........................................................CYCLE
5. Main Bus 2 Voltage (M2).................................................... CHECK
If M Bus 2 Voltage remains greater than 32 volts
6. ALT 2 Master Switch ................................................................OFF
7. Perform ALT 2 Caution (Failure) Checklist (do not reset alternator)
Amplification
Main Bus 2 Voltage is excessive. Indicates an alternator voltage
regulator failure; will typically be associated with abnormally high bus
voltage indications on M2 and ESS, may also be associated with M
BUS 1 and ESS BUS Warning Messages.
M BUS 2
Reissue A
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