HP 5890 SERIES II Service Manual page 39

Handle the heater and sensor cartridges with care to prevent breakage. The cartridges
(particularly the smaller sensor cartridge) are fragile.
14. Carefully slide the heater and sensor cartridges out of the heated block portion of the inlet.
15. Use a Pozidriv screwdriver to remove the two screws securing the inlet to the instrument.
16. Lift the inlet enough to expose the heated block.
17. If installed, remove the cryo- blast tube from the inlet weldment.
(a)
18. Remove any insulation from around the inlet.
Use caution to avoid sharp bends when bending tubing. Sharp bends may crimp the tubing.
19. If the inlet is to be replaced, prepare the replacement inlet by pre- bending its tubing into orien-
tations similar to that of the removed inlet.
20. Replace any insulation that was removed from around the inlet.
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(b)
SVC 2- 18