JRWR

Thanks to those who replied - I believe I've now resolved this problem.

I managed to find a PDF of the "CF126 designers' guide" on line which shows that the inhibit lines from the MPU are to be high when inhibited (the CF input expects the MPU to sink current when not inhibited so any broken connections would also be interpreted as inhibit). However, when I put a meter on the inhibit lines from the MPU they were all low (500mV).

So, using the DIL and rotary switches on the CF126 I reprogrammed it to 'not inhibit' £1 coins (not sure why there are 2 £1 coin channels) and cleaned the coin path (where 10p coins were sticking) and it now works!

I also found that someone had wired the lamp strobe lines 8, 9 and 11 together (well, they're all yellow so why not?!) so undoing that restored a little more sanity. I now need to replace the blown lamps (at least 30 I'd guess) and fit a replacement refill key and it looks like this machine might be restored to health.

Cheers all
JRWR

P.S. Does anyone know if this machine is rare or desirable? I estimate it's cost me £15 (machine) + £15 (new Scorpion 4 MPU) + £4 (refill switch) + £7.50 (100 bulbs) to repair. Am I likely to be able to sell it for £41.50 or more?

Hi again

Does anyone know if the four 'off' flashes of the Cashflow 126's green diagnostic LED occur:

1) only when the coin inhibit inputs on the 17 way connector are enabled (looking at the circuit diagram it seems the MPU would have to sink current from these by pulling them to 0v).

2) only when the coin has been programmed to be inhibited by someone using the rotary data switch and configuration DIL switches.

3) either of the above?

4) would any inputs to the route inhibit connector ever cause this?

Cheers
JRWR

Thanks for the replies. Yes, it is a cashflow 126 and it does have a green light on the side when it's powered up. When I put a coin in the green light flashes four times which, according to the user guide I found on-line, means there's "... either a software or hardware inhibit being applied." (Whatever that means - is my MPU telling the coin mech not to accept coins?)

I've not yet buzzed through the cables between the MPU and the coin validator but I'll do that this evening if I get chance. Just wondered if there might be some simple reason that 'inhibit' would be being applied.

Thanks again
JRWR