Moved the pinball one floor upstairs. Since I cannot lift to heavy I've dismounted the back box and the playfield to be able to move them separately. Upstairs I've assembled all back together again. Before all this action everything was working very well.
Now all opto switches on my Cactus Canyon are not working. I've checked everything visually under the playfield and cannot see any damage from dismounting/moving.
The A-20246 10-0pto PCB looks good, all connectors plugged in and unplugged again.
The 12 volt fuses (I don't know which one is for the opto board) F101 Regulated 12V, F109 Unregulated 12V are intact.
TP103 (unregulated 12 V) I also measured, 12V are present.
Currently I do not know where the error could be.

Strange thing I want to check the J141 for +12V

The schematic manual states that J143 pin2 is +12V and pin 3 is GND.
The manual states the following: J141-2 and J141-3 are both +12V
Can anyone help me and know what is correct. Whether pin 3 is GND or +12V?

Think I've found it, its a mistake in the manual J141-3 is GND

Thanks a lot

Thanks for hints
J41SchematicManual (resized).jpgManualJ141 (resized).jpg

Fixed: Found the issue, ground cable was detached from J141-3.