Immediate shutter close

Symptome

The cycle seems to end almost instantly, as if both curtains were leaving nearly together, sometimes with intermittent behavior.

Contextes

A sign of a wider sequence malfunction, often seen on a case that also shows an incoherent cycle, incorrect Bulb, or abnormal mirror return.

Causes a envisager

The priority lead from Goblin is a small lever that does not return correctly to its stop in the MS clutch / 1st curtain brake area.

Checks utiles

• Directly observe the mechanism in this area
• Test with the lever manually returned to its stop
• Check again after targeted cleaning of the clutch / brake area

Heuristique

Treat immediate closing as a sign of a global sequence problem, then check the mechanical lever-return lead very early.