TC reported of arcing spotted at car 1601 and train was jerky while travelling from SOM SB to CTH SB . ~~~~~ 1601 TC reported of arcing spotted and train was jerky while travelling from SOM SB to CTH SB CE: 1601 inverter input drop  1601 A1 Shoe fuse blown replaced. A1& A2 CCD shoes pitted & cracked - replaced both CCD shoes. Meter check on all CCD shoes fuses -OK. B1 & B2 CCD shoes condition - OK. Checked all CCD ht, cables, fuses & shoe conditions - All OK. Limited movement depot shumt-OK, No jerky or inverter voltage drop & no APS Fault. (Out put frequency-50Hz) (Out put voltage  -400VAC) (Out put voltage DC-108) (Batt.voltage    DC 108) Hanafi/ChanSW 44560