Siemens MOBILETT Plus Service Instructions Manual page 55

HT and single tank error diagnosis
CH1: 20 mV/div, (100 A/div), 10 µs/div (Inverter current);
CH2: 500 mV/div, 20 kV/div (HT)
HTPOS
on D1
Inverter
current
Fig. 8 High speed HT discharges (Defective tube, transformer, capacitor)
CH1: Inverter current 50 A/div, 10 µs/div
Inverter
current
Fig. 9 Abnormal inverter current (Defective single tank)
Siemens-Elema AB
Solna, Sweden
T
SPR8-215.898.02
Rev. 01 01.02
Page 11 of 12 MOBILETT Plus/ Plus E
SPS-UD
6 - 11
CH1
CH2