Procedure 2. Al Front Frame/Al8 CRT
22.Use a 9/16-inch nut driver to remove the dress nut holding the front-panel CAL OUTPUT connector to the front panel. If necessary, drill out the nut driver to fit over the BNC connectors and cover the tip with heatshrink tubing or tape to avoid scratching the enameled front panel.
23.Remove screw (3) securing the line-switch assembly to the front frame. See Figure 3-3.
24.Gently remove the line-switch assembly, using caution to avoid damaging AlWl and power indicator LED AlWlDSl.
25.Remove AlWl and AlWlDSl from the line-power switch assembly.
26.Remove the three screws (1) securing the front-frame assembly to the analyzer’s right side frame. See Figure 3-4.
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Figure 3-4. Front-Frame Mounting Screws
27.Remove the three screws securing the front-frame assembly to the analyzer’s left side frame.
28.Remove the four screws (1) (F’g1ure 3-3) securing the CRT clamps to the deck.
29.Pull the cable tie (1) to free W9. See Figure 3-5. Gently pry W9, the CRT cable, from the end of the CRT assembly.
30.Support the Al8 CRT assembly while gently pulling the front frame and CRT ou of the analyzer one or two inches.
31.Disconnect A18W1, the trace align wires, from A17J5. Remove the front-frame and CRT assemblies.
32.Gently pull the CRT assembly off of the front-frame assembly.