10042 - +15 VDC to SC-770 Controller? +15 VDC to SC-770 Controller? Yes Go to 9095 - 9093 - Replace SC-771 Controller Board - Formal Procedure, Notes: 9007 No Go to 9083 - 8997 - AC LED on LD-260 illuminated? - Decision, Notes: 8998 Note 9946 - Restart the RPM by cycling the on/off switch on the LD-260 8118 - When the LD-260 is switched ON both the green and amber LEDs should be lit. 10043 - Verify that +15 VDC is available to the SC-770 controller: ... 9043 - Is there approximately +15 VDC present?