Nidec Ophthalmic Yag Laser System Nidek YC-1600

Warning: This procedure requires trained personnel with PPE!

Microscope arm swung more than 45o to right or left

SB3 × 6 (n=2) loosened and display board ASSY removed

New display board ASSY assembled in the reverse order

Sign off on the Display Board Assy Replacement

Horizontal Slit Image Adjustment

Mount the focusing rod and set the magnification of microscope to 10×

Make the slit image horizontal and long

Check if the knife edges of the slit are parallel

Verify the position where the slit starts to be closed

Turn the slit image 180o and verify that the slit image position coincides with the position described in the previous step

If the slit image position does not coincide with the position described in the previous step, adjust with the adjustment screw

Open the knife edges by tightening the adjustment screw on A side

Loosen the adjustment screw on B side for fine adjustment to close the knife edges

Start the Optical Axis Microscope Check

Set the magnification of the microscope to 10×

Verify the position of the slit image on the focusing rod by looking through the microscope with each eye respectively

Remove the binocular tube and attach it changing its up-and-down direction

Verify the opposite side of the binocular tube of the step 2

Sign off on the Optical Axis Microscope Check

Chin support goes down during use?

If yes, replace SL5HR-1L M007 (the vertical driving axle)

Unscrew PC3 × 104,HH4 × 64 and PC4 × 62 and remove the head rest AS

Unscrew the screws in A and B in the right figure

Unscrew M015 and remove the sub-assembly A.

Remove M347 (grip) form the sub-assembly A.

Unscrew the fixing screw (FK2×43) and remove M344

Unscrew the fixing screw (FK2×43) and remove M014

Unscrew M015 and remove it from M007 (the vertical driving axle)

Warning: This procedure requires trained personnel!

Connector reconnected and key switch turned ON

4th pin of J103 on the master board verified

Detection light interrupted by inserting a board or metal plate into the slot of the sensor for the aiming shutter (1 position; PI3)

Sign off on the Aiming Shutter Sensor Check