Inspection procedure

Service Manual M695

09/93 3691-DMF

Doc Code 636 718

5.1Cleanliness of optical components

•All surfaces of optical components in the observation and illumination beam paths must be clean,

5 . 2 Z o o m

•Focus on the object and operate ZOOM UP and ZOOM DOWN at their minimum speeds.

The image sharpness should remain constant over the entire zoom range.

lThe image should not jump suddenly when ZOOM UP and ZOOM DOWN are being operated.

6.1Rotation

•The tiltable joint must be easily and smoothly tumable after the brake has been released.

6.2Brakes

•As the braking knob is applied, the movement becomes steadily less free and finally the joint locks completely. When the brake knob is turned the other way, the movement steadily becomes easier.

6.3Clip-on handles

•The sterilizable clip-on handles must be convenient to put on and take off again. They must click in and out perfectly.

6.4Gas spring

•The vertical adjustment must be smoothly adjustable from one end to the other.

•At maximum loading, and with the weight compensation at 10, the swingarm must not drift downwards.

6.5Weight compensation

•The adjusting spindle must be adjustable from 0 to 10.

6.6Safety hook

•The safety hook must engage faultlessly. When it is moved sideways, the ratchet bolt must remain in position.