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Chapter 2, Machine Part Replacement Reference
2-17
Bowl Optics Reassembly Notes
Refer to Chapter 4, Calibration, to properly adjust and calibrate the optics
after reassembly.
1. Remove the front and rear panels. (See page 2-2.)
2. Disconnect P504 from the backplane card (located in the lower right
hand corner).
3. Disconnect the display ground wire from the ground bus on the
cabinet side (located on the left side when looking from the front of
the cabinet).
4. Remove the (2) lower Phillips head screws securing the membrane
panel ribbon cable to the upper deck (located above the card cage at
the rear of the cabinet).
5. Using a #10 hex bit, remove the (2) shoulder screws securing the top
cover assembly to the top deck while supporting the top cover assembly.
Membrane Panel Assembly
1. Remove the (2) Phillips head screws securing the fiberglass decorative
panel to the top cover assembly (inside hinge area).
2. Remove the (3) Phillips head screws securing the membrane panel to
the top cover assembly.
3. Simultaneously pull the base of the membrane panel down and away
from the top cover assembly to disengage the top panel catches from
the catch plate.
4. Carefully pull the top of the membrane panel down to expose the
inner wiring of the membrane panel.
5. Remove the (1) Phillips head screw on the top cover, securing the
ground wire from the membrane panel to the top cover ground
surface.
6. Disconnect the ribbon cable from the card cage assembly by
following steps 1-4 of the disassembly instructions for the top cover
assembly or go to step 7.
7. Using a 1/4" wrench (or equivalent), remove the (2) #4-40 nuts
securing the ground from the ribbon cable to the top cover mounting
plate.
8. Using a 1/4" wrench (or equivalent), remove the (2) #4-40 nuts
securing the ribbon cable strain relief.
9. Disconnect P804 from the display distribution board.
Top Cover
Assembly
Содержание PCS 2
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