Main Deck Screws - HP 8560A Service Manual

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.
For Option 001 analyzers:
17.
rear-panel connector J 10.
For Option analyzers:
18. 002
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.
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.
Procedure 13. Rear Frame/Rear Dress Panel
Use a 5/16-inch wrench to disconnect W19, coax 83, from
Use a 5/16-inch wrench to disconnect Jll from the rear panel.
Figure 3-22. Main Deck Screws
Assembly Replacement 3-41