JVC 330, 370 SC, 340 SC service manual CRT Yoke Rotation

Chapter 3---Service Adjustments

1.Press the Power ON key to turn on the projector (press both power keys simultaneously if using the tethered remote). The Ignitor circuit will ignite the arc lamp and power will be applied to the electronics system.

NOTE: If using a terminal or PC, turn full power on by typing CTRL-P. To power up the electronics only, type CTRL-E. To power up the lamp only, type CTRL-L. These are toggle commands; repeated issuance of the commands toggles these power sources on and off. The lamp and electronics cannot be powered up separately with the remote controls.

3.2CRT Yoke Rotation

The CRT deflection yokes are factory set. If the CRT image is not level, adjust the individual CRT deflection yoke as required (see Figure 3-1).

WARNING!!! To prevent possible electrical shock when performing the yoke rotation, always wear ANSI/ASTM 10,000 volt rated safety gloves for protection from high yoke voltages present. Ensure the gloves are not cracked!

To adjust the deflection yokes:

2.Press TEST 2 to display the White X-hatch pattern.

3.Cutoff R and B and view G.

4.Remove the rear projector cover (see Section 4.2).

Model 330, 340SC, 370SC Service Manual 3-3