Akai EWI3020m Disassembly & PCB Pictures

The EWI3020m's "non-volatile" memory battery is soldered directly to the main PCB, which means you have to take the whole PCB out in order to desolder and replace it. I took my newly acquired EWI3020m apart a few days ago to replace the hardwired battery with a coin-cell battery holder.

Every one of the boards are single-sided Phenolic Paper PCBs populated solely with through-hole components and even jumper wires. You can see in the pictures that even some of the ICs (the CEM3374 VCO and EPROM for example) are socketed! Certainly makes repairs a happier experience.

Here are a few pictures of the disassembly and the main PCB itself; apologies for not having a suitable scanner!

Main PCB Images

EWI3020m Main PCB
EWI3020m Main PCB (traces)
Composited view of the component-side and trace side

Re-Assembled with Battery Holder Installed

Coloured wires are the "instrument in" cable
"Instrument In" connection to the I/O PCB


  1. Great job for publishing such a nice article. Your article isn’t only useful but it is additionally really informative. Thank you because you have been willing to share information with us. Edge Inter Connectors for sale

  2. Solder is essentially the metal alloy material wrapped around a cylinder that’s used alongside the soldering iron to establish a connection between electronic components. Know more about Raspberry Pi.


Post a Comment

Popular posts from this blog

Sony PVM 1454QM Disassembly