The Acorn A4 motherboard is about 10cm x 30cm, and is buried in the depths of the machine. You have to remove every single component of the machine to get at the motherboard. To make life easier when diagnosing faults I've scanned it with a flatbed scanner and the pictures are here - so there's no need to take your machine to bits to look at something.
The bottom of the board
The top of the board
Page by Theo Markettos (email at theo [at@] markettos.org.uk), last modified 2003-09-18
Return to Theo's A4 pages.