M. k=1,000 OHM M=1,000,000 OHMICRO FARAD. P=MICRO-MICRO FARADARE MEASUERD AT NO SIGNAL INPUTCT TO CHANGE WITHOUT PRIORWARNING:Parts marked with this symbol have critical characteristics.Use ONLY r eplacement parts recommended by the manufacture.CAUTION:Before returning the unit to the customer, make sure you make either (1) aleakage current check or (2) a line to chassis resistance check. If the leakagecurrent exceeds 0.5 milliamps, or if the resistance from chassis to either sideof the power card is less than 460 kohms, the unit is defective.WARNING:DO NOT return the unit to the customer until the problem is located andcorrected.SCHEMATIC DIAGRAMS (14/15)1U-3317-1 CONTROL UNIT76CDEFGH+ 5V+ 15V- 15V