COPYRIGHT © 1997 MERIT INDUSTRIES, INC.
TN12.doc 11/24/98
Tech Notes
Page 1 of 2
7HFK1RWHV
Date: 6-26-97
merit industries, inc.
Re:
To prevent the catch rings from being damaged, a beveled shim
has been designed to fit between the spider and the catch ring.
Contact Merit Customer Service to order
Installation
1. Turn off the game and disconnect it from power
2. Open the target section door
3. Disconnect the matrix switch cable (J-2), the piezo strip connector (J-5), and the CPU ribbon
connector (J-1), from the RDP28 board (see Figure 1 for RDP28 board location).
4. Remove the four (4) target assembly mounting screws securing the assembly to the target
door (the matrix target assembly includes the matrix switch wood panel, rubber sheet(s),
spacer and target).
5. Place the matrix switch wood assembly, face down, on a flat surface, with the matrix tail
facing away from you (so that the edge closest to you corresponds to the top of the target
section door).
6. Loosen the thumbnuts and slide latch to remove matrix switch wood panel and the rubber
sheet(s). See Figure 1.
7. Remove the four (4) target spacer nuts and carefully remove the spider assembly. See Figure
2.
8. To install the target shims, hold them so that the beveled edge faces down (towards the front
of the target). place the end of one shim at 12 o’clock (i.e. where the number 3 target section
is located ) and wrap it around the inside of the hole. place the end of the other shim against
the end of the shim just installed. Wrap the shim along the inside of the hole until the end
snaps into place against the other shim. See Figure 3.
9. Re-secure the spider assembly to the spacer. Make sure to orient the spider correctly; a small
letter “G” is printed on the edge of the spider; the side with the letter “G” should face 9 o’clock
when the spacer is oriented with the top edge closest to you.
10. Replace the rubber sheet(s) and matrix switch wood panel and re-install the assembly in the
game.
11. Re-connect the matrix switch cable (J-2), the piezo strip connector (J-5), and the CPU ribbon
connector (J-1) to the RDP28 board.
12. Close the target section door, plug in the game and turn on the power.