Search found 3 matches

by boffin
Tue Jan 07, 2020 12:00 pm
Forum: Test Equipment & RF Equipment Alignment
Topic: R2001D checksum warning
Replies: 3
Views: 6295

Re: R2001D checksum warning

Thanks for the suggestion. Yes, I've pulled A12 board and have the A13 jumper board installed. I checked the jumpers on the A13 board as they have a couple of positions but all four relate to the analogue side of the unit - AM MOD, 1Khz SINE, EXT MOD and INT MOD input and output lines. If I have the...
by boffin
Sat Jan 04, 2020 10:50 am
Forum: Test Equipment & RF Equipment Alignment
Topic: R2001D checksum warning
Replies: 3
Views: 6295

Re: R2001D checksum warning

An update on where I am with this issue. Thanks to jry , I now know my ROM images are intact and the checksums are correct. So the EPROM is fine. For good measure I've replaced the EPROM but no change. Each of the five ROM sockets have common supply, address and data lines. To eliminate any of these...
by boffin
Fri Dec 06, 2019 5:27 am
Forum: Test Equipment & RF Equipment Alignment
Topic: R2001D checksum warning
Replies: 3
Views: 6295

R2001D checksum warning

Hello, I'm based in the UK and very much new to the Motorola world. Motorola radio kit seems to be a fairly rare beast around these here parts. So, thanks to a well know auction site, I now am a somewhat confused owner of a R2001D set (actually it's a R2010D/HS but the cellular card is only fit for ...

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