I bought this working Daiichi pachinko (2004, "X-Model") a few days back. During transport, the machine probably got bumped around.

Now, an error code 7 is displayed less than a second after powering up.

Question 1: Does this indicate a problem with the 'reward' ball path?

Question 2: Does this disable the shooter?

The balls in both paths empty without incident, and when empty a code 1 is shown, reverting to a 7 when refilled.

Other than the disabled shooter, the game seems to operate properly. The dongle appears to be OK physically.

Question 3: Is there a reset switch somewhere?

Question 4: Is there a wiring diagram available?

Question 5: What should I do next?

Thanks!
DrOrb