Batboard

Does anyone have a S1347D variable DC power supply? If so can they please tell me what is the voltage stamped on the Dialco indicator just to the left of the DC On / Standby switch? The one I have is marked 28 volts. Better yet can anyone that might have a schematic please tell me what is the voltage of the zener diode that is part of the M9763 transistor circuit? I believe part of this drives the front panel DC circuit. The zener I have is blwon and is marked 56C 36 and I assumed this was a 36 volt zener but now I am not sure.


Thanks
-Tom

48-82256C36 is a 28V Zener diode