Nidec Automatic Chart Projector CP-690

Warning: This procedure requires technical knowledge and should be performed by trained personnel only.

No. 8 of the DIP switch on the BA01 board turned to the ON position

Ensure the main body is installed on a stable and level surface.

Chart projected on the screen and focus roughly adjusted

Operate the remote control as follows so that the first projected chart and open mask become horizontal.

VA UP button pressed to move the chart up

VA DOWN button pressed to move the chart down

START button pressed to move the mask up

Remove the top and bottom cover ASSYs and disk cover (M030)

Turn the power switch ON, project the chart onto the screen and adjust the focus

Loosen SB4 × 10 (n=4) , SW4 (n=4) and PW4 (n=4) fixing the mask motor

Make fine adjustments of the mask motor position to satisfy the conditions

If the adjustment can not be completed by moving the mask motor, move the chart position by making fine adjustments of the chart sensor position

When the chart sensor is moved, perform Adjustment of the fixed mask position

Single letter mask position: When applying the single letter mask to the charts, the alphabetical letter shall be in about the center of the mask

R/G filter position: The boundary between the red and green filters shall be in the middle of the chart horizontally

Blocking of the astigmatism clock dial chart: The projected astigmatism clock dial chart shall be not blocked

NOTE! The parts around the lamp become hot. Do not touch the parts directly by hand.

Turn the power switch ON, project the chart on the screen and adjust the focus.

Turn the power switch OFF, remove the top cover ASSY and disk cover (M030).

Disconnect the connectors from J3 and J5 on the BA01 board.

Unscrew BS3 × 6ZnC to remove the VA mask (M029).

Turn the power switch ON again, rotate the chart and mask disks by hand to check the position (tilt) of the fixed mask.

Loosen HH3 × 4 (n=2) to rotate the fixed mask by hand. Adjust it to satisfy the following conditions.

Tighten the loosened screws while pushing the fixed mask into the lamp side.

Assemble the removed parts in reverse order.

NOTE! For variable power lens barrel, set the lens position as below before adjustment.

Remove the top and bottom cover ASSYs and turn the power switch ON.

Place a piece of white paper at a position of 0 to 10 mm from the lower side of the front cover.

The LED image appear on the paper as follows.

Loosen TH screw (n=3) fixing LED ASSY. Adjust the focus of the LED image by pushing and pulling the LED ASSY. Fix TH screw where the reflection image is focused.

Loosen PC screw (n=4) fixing LED ASSY. Move the LED ASSY in order that LED image becomes center of circle. Fix the screw where the reflection image of LED becomes center.

Project the chart onto the screen to check that the chart brightness is even.

Remount the top and bottom cover ASSYs.

Sign off on the lamp adjustment

No. 8 of the DIP switch on the BA01 board turned to the ON position

Warning: When turning the DIP switch to the ON or OFF position, slide the switch without loading the circuit board. If not, a failure may occur.

Voltage between TP1 and TP3 on the BA01 board for chart sensor

Voltage between TP1 and TP3 within the applicable range (4.5 V to 5.0 V)

VA DOWN button on the remote control pressed twice and the VA UP button once

Voltage between TP1 and TP3 on the BA01 board for chart sensor after pressing buttons

Voltage between TP1 and TP3 within the applicable range (0.5 V or less)

VA UP button on the remote control pressed once