Re: apc SUA1500 Repair

The ZIP file is in fact an tar.gz archive... and the file owners name is "mjstefl". Its a good dump rev .3, probably GEN3.6. This is to my knowledge the last generation where schematics are available. The newer GEN4 has slightly different hardware, i found that the Chip select between the ADC and 93C56 eeprom is using only pin (I think) P3.7 and unfortunately the CPU goes to the CS of the ADC and the eeprom CS is connected directly to a inverter output. So I had to solder the memory out because it was impossible to read in circuit. But from two units...

Re: New Members - please post your introductions here

Hello to all, i would like to introduce myself. I have some experience in electronics and a bit in SW too. I hope i will come along with others. Sorry for my bad english.