To disassemble CCU:

1. remove the thumbscrews
2. remove the six black phillips head screws holding the cover and remove the cover
3. remove the final 2 stainless steel philllips head screws to disassemble completely

Schematic XTPSB000rev2.pdf after February 2005, S/N over 3000, electron multiplier upgradeable

Schematic_XTPSBx00.pdf S/N to 2999

Schematic_XTRFBx00.pdf

Schematic_XTELBx00.pdf