Procedure 13. Rear Frame/Rear Dress Panel
15.Remove the two flathead screws securing the rear-panel battery assembly, and remove the assembly. Remove the battery and unsolder the two wires attached to the battery assembly.
16.Use a 9/16-inch nut driver to remove the dress nuts holding the BNC connectors to the rear frame. If necessary, drill out the nut driver to fit over the BNC connectors, and cover it with heatshrink tubing or tape to avoid scratching the dress panel.
17.For Option 001 analyzers: Use a 5/16-inch wrench to disconnect W19, coax 83, from
rear-panel connector J 10.
18.For Option 002 analyzers: Use a 5/16-inch wrench to disconnect Jll from the rear panel.
19.Disconnect the two cable ties holding ribbon cable W7 to the A19 HP-IB assembly.
20.Remove four screws (1) securing the rear frame to the main deck. See Figure 3-22.
21.Remove the six screws securing the rear frame to the left and right side frames.
22.Use a 3/8-inch nut driver to remove the nut securing the earphone jack. Carefully remove the jack using caution to avoid losing the lock washer located on the inside of the rear-frame assembly. Replace the washer and nut onto the jack for safekeeping.
23.Remove the rear-frame assembly.
24.To remove the rear dress panel, remove the two spring clips located on the inside of the rear frame near the display adjustment holes.
SK147
Figure 3-22. Main Deck Screws
Replacement
1.If the rear dress panel is removed, secure it to the rear frame using two spring clips. Take care to seat the panel tight against the frame.
2.Place the analyzer on its front panel allowing easy access to the rear-frame area.
3.Place the rear frame on the analyzer and use a 3/8-inch nut driver to secure the earphone jack. A lock washer should be used on the inside of the rear frame and a flat washer on the outside.
