Crash N Score Mod for Randon Targets

Mod; "C1 is unpopulated"

No it isn't

Mod; "Lift pins 1,2,3,11,12, and 13 of C1

Thats a 555, my guy.


What is going on?
I love TTL mods, but whew this has me lost.

Also whats "Bet"?
 
You can bet it's between.
Shit you're right.

I'm pretty close to deciphering these notes, I'm just just stuck on;
Does he mean piggybacking onto the existing 555 at C1, and what the fuck is pin 11, 12, 13 of C1, because those don't exist.

- Clip and lift D4,P6 and E4,P9
- "Position C1 on board is open" ??
- Place a 555 in position C1 (Piggyback? Is that C1 or Csomething else?)

- Cut traces of C1,P1
P2
P3
P11 ??
P12 ??
P13 ??

- Place a .1uF capacitor in between of C1,P5 and P10
- Place a 30k resistor in between of C1,P6 and P9
- Place a .1uF capacitor in between of C1,P7 and P8

- P8 of 555 goes to Vcc, P1 of 555 goes to GND (duh)

(Mystery 14 pin NE555 I guess)
- Short Pin 1, 6 and 7
- Short Pin 8 and 11
- Short Pin 5, 9, 12, 13
- Short Pin 10 and 14
- Short Pin 2 and 4

- Short Pin C1,P3 to E4,P9

- Jump P2,555 to D4,P6
 
Actually it looks like the 7402 @ C1 was already removed from the design and replaced with a 555.

Those instructions are prob from a earlier rev of the board, and production has this in already:

1761744356086.png

1761744123940.png
 
LOL -- Should have just looked in the corner.

This manual:
1761744835542-png.857956


Arcarc manual:
1761744872332.png
 

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Both of my pcbs have the 555 at C1. My cab also has the red manual, which I just scanned and uploaded to the KLOV entry.
 

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