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Service manual M695
Description of control unit MEL64/65
Doc code 636 718
09/93 3077-HWE
Travelling to mid-position
This function is activated from the handswitches or footswitches A and B,
using the key (SL->). A timer (Monoflop) sets FOCUS SPEED to GND
potential for about 30 milliseconds, using a transistor.
The impulse is recognized on the focus servo in the motor driven objectiv
(MOBxxx), and the system is steered to the mid-position.