Hi Scott, Finally got to dig out my MSF manuals for a look.
Looking on the schematic, I see JU1 and JU2 being related to the HSR (High Speed Ring) data bus. If this is the JU1 you moved, then it would change the communication path between the SSCB and the TTRC and/or the SECURE board(s). That likely explains the crash on boot when it can't find the modules its looking for since it can no longer talk to them. Here is what my manual (68P81082E20-A) says about Power Control Servicing: When servicing the station, it may be necessary to override the power control circuits to key the station. While this service mode is enabled, SSCB requests to key the transmitter will disregard and power control failure indications. To enable this mode, depress and hold the SELECT/SET switch in the SET position (display cursor should not be active at this time). While holding the SET switch, press and hold the PL DIS/XMIT switch in the XMIT position. When tSt appears in the Status display, release the SET switch first, and then the XMIT switch (station will key after the SET switch is released and until XMIT is released). While this mode is active, the DISABLE LED will flash. Toggle the RESET switch to take the station out of the Power Control Service Mode. The DISABLE LED should stop flashing. Cheers! Lee --- In Repeater-Builder@yahoogroups.com, Scott Zimmerman <n3...@...> wrote: > > This station was working as a station before it went dead. In other > words, "no, it's not hacked up." > > Can anyone tell me for sure where the service jumper - JU1 is. I found > 'a' JU1 on the SSCB board, but it seems relatively hidden for a service > jumper. Also, when I move it's position I get an error on the LED > display, then the station resets. > > Scott > > Scott Zimmerman > Amateur Radio Call N3XCC > 474 Barnett Road > Boswell, PA 15531 > >
