Tek
Probe 
2225
Tektronix 2225 Oscilloscope Teardown and Calibration - EEVblog #208
2225 Operators Manual P/N: 070629801
2225 User Manual P/N: 070629801
SM
focus pot
marked:2M2 827
withstand: 2KV
R984 was increased to ~2M, instead of 1M, as mentioned in the schematic ... I have replaced the part.
オシロスコープの修理
withstand: 2KV
R984 was increased to ~2M, instead of 1M, as mentioned in the schematic ... I have replaced the part.
オシロスコープの修理