JVC Model 200 Vertical and Horizontal Size Settings, Inverted Vertical Jumper Setting

Chapter 3 Service Adjustments

2.Remove the projector rear cover (Section 4.2).

3.Verify that the jumper is plugged into JA50 and J101 for rear projection or J50 and J100 for front projection (See Figure 3-7). Change jumper if necessary.

4.Replace the projector cover.

5.When changing jumpers for front or rear screen projection, Centering, convergence and shading must be rechecked.

3.9.2Inverted Vertical Jumper Setting

The Ceiling/Floor jumpers invert the image vertically for use in situations using mirrors or ceiling projections. Figure 3-7 illustrates the location of the jumpers on the Scan Reversal Board and indicates the proper location for ceiling or floor projection. The Model 200 Projector is shipped in the normal vertical projection position with the jumper plug inserted into J53. For an inverted vertical setup this jumper plug must be inserted into J53A. (Refer to Figure 3-7).

To invert the vertical image:

1.Turn power off at the projector and wait for the arc lamp to cool.

2.Remove the projector rear cover (Section 4.2).

3.Tilt the electronic module up (Section 3.3).

4.Verify that the vertical jumper is inserted in the correct jacks for appropriate application, (see Figure 3-7). Change jumpers if necessary.

5.Replace the electronic module and rear cover.

6.When changing jumpers for floor or ceiling screen projection, Centering, convergence and shading will need to be rechecked.

3.10Vertical and Horizontal Size Settings

Adjust the vertical height pots and horizontal size coils when replacing the Horizontal/Vertical Deflection board, Scan Reversal board, or CRT/Yoke assembly. They may also be needed when the convergence adjustment procedures fail to bring the colors into convergence.

3-12 Model 200 Service Manual