Sega Blast city PSU 12V issue

[Francky]

Hello,

I would like to know about CN1 connector back of the PSU when pluged in the Blast ,wich wire have already the 12V out when going to the I/O card ?

 

[skusuma]

Based on the wiring diagram at link below, it's 26th pin on the 32 pins hirose connector. It should be red color.
https://wiki.arcadeotaku.com/images/b/b9/SegaBlastCityWiring2.jpg

 

[skusuma]

The pins order should be as I indicated on picture below.

 

[Francky]

yes thank you , i was at the same status today , my 12V was good at this point, i will check it now at the input /output of the I/0 board and tell you soon
CN1 Input I/O board #10 ---12V
Ground #11-12-13-14-15
CN3output I/O board #1 #7#13----12V
Ground#2#3#4#5#6