Notes about problems with MCM 159

MCM-159 was tested 16-Nov-99.  It has 9 bad channels. These are channel # 49, 67, 77, 85, 117, 179, 205, 241, 245. These channels have different ADC gains and pedestals.
Preamp spies of ch#117 and 245 show bad signals. Preamp spies of ch#49, 67, 85, 179, 205, 241 look as though they worked ok but close look at it shows that they have different DC levels from the others.  Both of preampy spy and AMU/ADC spy look OK for ch# 77.


updated 23-Nov-1999
Sangsu Ryu