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Service Manual M695
Inspection procedure
Doc Code 636 718
09/93 3691-DMF
3.5 Inspect zoom range.
•
Travel to zoom end positions 7 and 36 using max. SPEED. Zoom should not touch
mechanical stop. Relevant magnification is seen centred in window.
4.1
4.2
4.3
4.4
4.5
Turn FOCUS SPEED potentiometer from min. to max. and from max. to min.
•
Reading on test box: FOCUS SPEED
min./max. 1.25...1.7V/5V ±5%
The focus speed is continuously adjustable.
Use foot-/handswitch to FOCUS UP.
•
Reading on test box: FOCUS UP
Use foot-/handswitch to FOCUS DN.
Low/High <0.2V/>4.75V
•
Reading on test box: FOCUS DN
(Fault location in FOCUS control: page 4-9)
Mechanical focus movement
•
Focus moves uniformly in both directions.
Activate yellow knob on motorized focusing: FOCUS reset
•
Focus automatically returns to basic position.
(Use FOCUS UP and DN to travel away from basic position, and repeat test)