JVC Model 200 service manual Convergence/Deflection PCB

Chapter 2---System Description

2.3.9 Convergence/Deflection PCB

The Convergence/Deflection Board is located on the bottom side of the card cage under the Horizontal/Vertical Deflection Board. This board drives the convergence coils of the projectors.

The following functions are provided by C/D Board:

•Generation of various waveforms for the horizontal and vertical axes

•Height control

•Generation of waveforms for dynamic focus

•Various geometry correction functions for the horizontal and vertical axes

•Convergence output amplifiers for all colors and both horizontal and vertical axes

•Convergence enable and raster fill function

•ILA® assembly driver circuitry with temperature compensation

•Phase locked loop for ILA® assembly drivers

•IIC serial bus interface

The Convergence/Deflection Input/Output diagram (Figure 2-15) and the list of inputs and outputs (Tables 2-12 and 2-13) provide information for the technician to perform module level troubleshooting.

Model 200 Service Manual 2-51