Hello all,
I have two Rohde & Schwarz SMG 1GHz Signal generators I'm trying to repair that both get ERR 6 on power up. (I have to press the flashing status button to get the error. The center LCD says ERR 6, and the right hand LCD states OP 1) According to the minimal documentation I have, it's saying that the CMOS battery is low. After replacing the depleted 3.6V lithium batteries on the CPU cards, the problem persists. I tried removing the two SRAM chips to allow them to completely lose all their data, when I did this, on the first power up I get an ERR 6 OP 1.2.3; and on subsequent power ups I get the original ERR 6 OP 1 again. I verified that backup power is getting to the SRAMs when the power is off. So, I am guessing that perhaps I need to somehow clear the error, but I have no information on how to do this. Is anyone familiar with this unit that could give me some advice?
Thanks.