Quoted from Dantesmark:3 things.
Would the optos affect if the diverter wont open?
Never worked on optos... just wipe them off and lineup positioning?
Can u test optos in the menu?
Yes, as the opto is what tells the machine that a ball has passed which triggers the positioning of the diverter.
For the 2 ramp entrance and SC loop opto pairs (see #37 & #38 on page 2-38) you will use T.3 Single Switches (this will be the one you want to test the opto pair on the entrance ramp which communicates to the gate to divert to loop, and the one on the SC loop which communicates to the gate to open so ball exits loop). According to the switch matrix (p 3-4), the entrance ramp opto is switch #85, and the loop made opto is switch #84
To test the 3 optos related to the magnets in the supercharger, that would be T.12 (p 1-16). You enter this test, then you can test various combinations of the magnets being enabled, but as the ball loops continuously, you will also see the opto state for each of the 3.
If you don't have a manual, you can d/l a searchable PDF version here: https://www.ipdb.org/search.pl?any=getaway#1000
Sometimes wiping them is good, other times they are burned out. One opto in the pair should be clear (transmitter) and the other black (receiver). As they age/deteriorate the clear one turns black and does not perform as well.
If you do end up replacing them, the opto board set is the way to go if you want to make it easy on yourself when replacing them. You would just unsolder the two wires for the old one then remove it, put the new one in and solder the wires tot the pads. If you have stripped out or broken opto mounts, then you'll need to purchase the full opto assembly set. Also, I know it is money, but if you replace one set you might as well replace all 5, as one going bad is indicative that they others of the same age probably don't have much longer either.
Board Sets
Marco's | https://www.marcospecialties.com/pinball-parts/A-14231-2
PBL | https://www.pinballlife.com/williamsbally-led-and-pcb-board-set.html
Assembly Sets/Bases
PBL | https://www.pinballlife.com/williamsbally-infared-led-opto-assembly-set.html
Marco's (white) | https://www.marcospecialties.com/pinball-parts/03-8506-1
Marco's (black) | https://www.marcospecialties.com/pinball-parts/03-8506