I replaced BNCtoECL cable of PiR 1R-16R, which includes the pion rejectors that have issues,17&32(only ped),18(very broad ped), and now all those three channels have normal peds. I will check the real signals once we have electron data.
Issues we have for both HRS: 1, LHRS s1-6R, s2-8R: broad pedestals (~50channels wide), I checked the signals and they are clean. I disconnected their ADC cables and took a cosmic ray data, which still shows the wide pedestals, so the ADC channels are bad. We need to move those two cables on upstair patch panel to other empty slots, for example, the one that includs 10 cerenkov cables, has two empty inputs. I did that but the replay complain an error related to BPM. I left them to where they were and wait for next time or other person to fix them. Anyway, no big issue and easy to fix.
1, RHRS: preshower 15R, 18R have broad pedestal peaks. I moved the cables to other ADC groups but did not help. So the ADC channels are fine and they could have issues of bad PMTs or bad connections. I did not check their PMT signals. I will ask David to do it.