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Electronics => Repair => Topic started by: RADIOAMAT on July 23, 2019, 09:37:34 am

Title: MARCONI 2022D RF GENERATOR
Post by: RADIOAMAT on July 23, 2019, 09:37:34 am

Hi
I have my RF generator MARCONI 2022D and
it remains blocked on the start-up phase with the display 2022
This is the version with EPROM 27C512 soft 01
I tested it by injecting an external source 10MHz but still the same problem!
if you have any information, thank you!
73s
(http://)[attach=1]

Title: Re: MARCONI 2022D RF GENERATOR
Post by: hendorog on July 23, 2019, 10:01:10 am

Have you tried the marconi yahoo group. There are guys on there who know these inside out.

https://groups.yahoo.com/neo/groups/marconi_test_instruments/info

Title: Re: MARCONI 2022D RF GENERATOR
Post by: RADIOAMAT on July 23, 2019, 10:26:39 am

Hi
Thank-You for your reply, i will post too, on this forum

Title: Re: MARCONI 2022D RF GENERATOR
Post by: RADIOAMAT on July 23, 2019, 03:05:32 pm

I found the fault, no RST pulse of microcontroller 8085 on pin 9, coming from 4020 IC4 change it 4020

Best regards