Hi there!
I recently purchased a 1971 Gottlieb Lawman (Sheriff) and it wasn't working when I bought it.
So far, some progress has been made on getting things going, but I'm stuck on getting the startup procedure to complete. I have a manual, and schematic. I have been doing my best to read this schematic, but admittedly it starts to look like spaghetti after a while.
When powered up, the "QB" (game over) and "ZB" (1st ball in play) relays are sucked in. When inserting a coin, or pressing the replay button with credits on the credits wheel, the startup sequence begins. The "SB" (reset control relay) sucks in, and the arm on the control bank resets. None of these relays activate again during this sequence.
Simultaneously the bonus unit makes a few steps, and the inboard facing coil becomes latched on. While that is buzzing away, the 100's score reel is spinning constantly and not resetting on player 1. It does not carry over to any other reels, just spins around and around.
It looks like the latched coil on the bonus unit is activated by the "C" relay (advance bonus relay). The "C" relay is latched on as well, and if I push it out of position, it unlatches the solenoid on the bonus unit. This also allows the spinning 100's score reel to begin carrying the score over to the 1000's unit.
This is as far as the machine gets. I only let it run like this for a few seconds at a time to troubleshoot since I don't want the coil on the bonus unit to overheat. I have checked the switch positions on the 1st player 100s unit to confirm they work properly in 1-8, 0, and 9 positions. I have not verified they work electrically with a meter.
Some background. I have extensive knowledge of automotive 12v systems, and reading automotive vehicle schematics. These schematics are just something else. I have a good meter, and know how to use it, the problem I'm having is not knowing where.
Thanks in advance for reading my post. Hopefully we can get this thing figured out!