Convergence Deflection Pcb - JVC 250 Service Manual

Hughes-jvc projector service manual

Table of Contents

Chapter 5---Electronics

Horizontal Vertical Deflection PCB - Remove and Replace

The Horizontal/Vertical (H/V) Deflection PCB is located in the upper portion of

the Electronic Module card cage.

Tools Needed:

#1 Pozi-drive Phillips-head screwdriver

Parts Needed:

Horizontal Vertical Deflection PCB p/n 105236

To remove the Horizontal/Vertical (H/V) Deflection PCB:

1. Power off the projector by IR Remote or PC, and allow the cooling fans to

run until they shut off automatically.

2. Turn the AC Circuit Breaker to the OFF position and unplug the AC

Power Cord.

3. Remove the rear cover.

4. Disconnect six connectors; J34, J35, J36, J41, J42, and J43 (see Figure

5-15). Move the cables out of the way.

5. Loosen (it is not necessary to remove) the 5 Pozi-drive Phillips-head

screws that secure the Horizontal Vertical Deflection PCB to the

electronic module cage.

6. Remove the Horizontal Vertical Deflection PCB by sliding it toward the

left side of the projector (this is the upward direction if the electronic

module is tilted up) so that the mounting screws clear the access holes.

Then lift the side of the PCB that is nearest the front of the projector first

and angle it upward so that the side closest to the rear clears the lip of the

electronic module frame. Be careful when removing or reinstalling the

PCB to avoid damaging it on the fan screws or cable clamps.

7. Reinstall the Horizontal Vertical Deflection PCB by lowering the side that

is nearest to the rear of the projector in first until it clears the electronic

module edge, then lowering the other side. Carefully fit the board over the

mounting screws and slide the board into position. Tighten the screws and

reconnect the connectors.

5.7