Train doors were not proven closed at Rear M2 car B4 door. TC opened and closed train doors once to clear fault. ~~~~~ No door related FC observed
Found 2607 B4 (LHS) outer roller delaminated.

After door roller replacement:
Open Close speed pass: Y
FOD found: N
Door cycle 20x: Y
Rubbing marks: N
Door Push/Pull force: ok
Door mating gap: ok
Check Door Lock Switch red line when door closed - ok
Door Lock Switch Cushion Rubber intact: Y
Door Close Switch distance from actuating plate - ok
Door Wobble: N
Rectification Actions:
- Replaced the main door rollers at 2607 B4 LHS door.
- Preventively serviced J-rail and guide rail.