Seeing I have a KOD disassembled in the shop, I thought I would assist on this. However I too am puzzled for the lack of locating a relay shown as "AS" 2 Coins Per Play, as well as "D" 2 play Relay.

On the underside of my play field there is a 4 bank relay as follows, "?" missing letter, "E", "F", "J". The last 3 are for the pop bumpers. I believe the "?" is "A" relay. Neither of these 2 missing relays are shown on the lower relay board.

So I would like to know if these machines did in fact have the "AS' and "D" relays installed.

Pic of the lower relay board.

IMG_0627 (resized).jpg

My machine has 2 chutes, 10 cents and 25 cents. Gottlieb did not install the "AS Relay, 2 Coins Per Play", nor the "D Relay, 2 Play Relay" on it. It does however have the "W 3rd Chute Relay".

A local collector just sent me pictures of his lower relay board. It does show 2 additional relays that my machine does not have. One is an "AG" type relay which looks to be the "D 2 Play Relay", and an "AS" type relay which is the "AS 2 Coins Per Play Relay". I compared the wiring to the schematic and it matches.

So depending how the machine was optioned for coin chutes, dictates the relay assemblies.

Here's a pic showing the 2 extra relays.

King of Diamonds with extra relays (resized).jpg

I know the feeling, as we all have been there a one point. Just one thing, as the score motor is spinning upon startup, do the score reels reset to zero?

First, with the machine off, manually advance the score reels to show points if not shown already. Then turn on the machine and activate the start relay. Do they reset, does the score motor continually spin?
If they don't reset, try manually activating the 100 point relay while the score motor is spinning. Does this advance the reel back to zero?