Zenith PRO 841x/851x

      >> Introduction 
      >> Layout and Setup Tips 
      >> Focus Block Replacement 
      >> CRT Tube Replacement 
      >> Manuals / Downloads 

Removal of the old focus block is very easy, and requires no more than a ¼” nut-driver. Carefully note where each wire connects to, and take out the old focus block. Note that the G2 and focus wires are cut to length, the longest wires go to the tube farthest from the focus block. This is the same with the new block.

To gain access to the wires going to the CRT’s, flip up the shielded video board to expose the CRT area.

The picture above shows the location of the 2 pin connector that comes from the focus block. Note that this picture was taken with the bottom of the chassis removed for clarity, you do not need to take the bottom cover off to remove the focus block.

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