Early Z31 ECU installation

[raddy]

Hello Matt

Can I kindly ask you to check below picture of early Z31 ECU, if Nistune board should be installed at direction as pictured?
Thank you

[bachig24u]

it looks correct in comparison to the direction of other IC's around it.

to be sure, look at the semi-circle at one end of the printed pattern on the ecu board.

match it up with the semi-circle on the nistune board.

every IC has a notch, a dot (meaning pin 1) or a semi circle at one end to identify the direction it goes in the PCB.

the nistune board one can be clearly seen on top of the board in your picture on the right hand side of the rectangular print on the Nis Board.

z31.jpg

(240.78 KiB) Downloaded 1947 times

[raddy]

Thanks for hint, that make sense.

[Matt]

I really hate these earlier model ECUs because the number of changes required and very delicate tracks

Yes the orientation is correct (cresent at top of board). However why is there an angle to the board compared to other chips?

[raddy]

nistune board is not fitted to the socket at all,just placed there for reference.