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7b)
Remove the four CRT mounting bolts (A) (with springs and spacers) and remove the mounting
bracket (D).
8b)
Remove the four CRT mounting ear screws.
Note: The CRT mounting ear screws are not used on some assemblies.
9b)
Gently remove any metal shavings from around the screw holes. Do not allow the metal shavings to
get into the fluid.
10b) Note the position of the high voltage anode cap with respect to the coupler.
11b) Carefully remove the CRT from the coupler. Wipe any excess fluid from the faceplate of the CRT. Set
the CRT aside.
12b) Use an empty coupling fluid bottle to extract the remainder of the fluid from the coupler.
Note: Complete removal of the coupling fluid is not necessary when only replacing the CRT.
13b) Clean any remaining fluid from the coupler and the CRT gasket channel using absorbent tissue. Refer
to "C". Cleaning the Coupler, C-element Lens and CRT Faceplate procedure if the fluid is discolored
or contaminated.
14b) Make all necessary repairs.
C. Cleaning the Coupler, C-element Lens and CRT Faceplate
1c)
Remove CRT coupling fluid as described in steps 1b through 13b.
2c)
Using denatured alcohol on a cloth made of 100% cotton or a lens cleaning tissue, gently clean the C-
element (fisheye) lens, coupler and the CRT faceplate. Thoroughly clean the coupler assembly,
including the expansion chamber bladder, and allow to fully dry.
Caution: Do not use soap or detergent type substances to clean the coupler and its related
assemblies. Water can be used as an alternative to denatured alcohol, but the assemblies must be
completely dry prior to reassembly of the coupler and the addition of the coupling fluid. A hair dryer
may be used to dry the coupler and its assemblies prior to reassembly. If contaminated fluid is
discovered, the coupler and its related assemblies must be completely disassembled and cleaned to
prevent a reoccurrence.
3c)
Replace the CRT and C-element lens gaskets.
4c)
Reassemble the C-element lens and the output lens to the coupler.
5c)
Refer to "Replacing the CRT Coupling Fluid" upon completion of necessary repairs and cleaning of
the optical/coupler assemblies.
D. Replacement of the CRT
1d)
Remove CRT coupling fluid as described in steps 1b through 13b.
2d)
Remove the plastic protective coating (if present) from the faceplate of the replacement CRT.
3d)
Refer to "Replacing the CRT Coupling Fluid" to complete the CRT replacement.
E. Repair or Replacement of the Optical/Coupler Assembly
1e)
Remove CRT coupling fluid as described in steps 1b through 13b.
2e)
Remove the four inverted-type Torx screws which secure the Delta output lens to the coupler. An
inverted-type Torx socket can be purchased using part number 483539517303.
3e)
Removal of the Delta output lens will allow access to the C-element lens, C-element gasket, coupler,
and its assemblies.
4e)
Refer to "Replacing the CRT Coupling Fluid" upon completion of necessary repairs to the
optical/coupler assemblies.
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