Author Topic: MARCONI 2022D RF GENERATOR  (Read 271 times)

0 Members and 1 Guest are viewing this topic.

Offline RADIOAMAT

  • Newbie
  • Posts: 3
  • Country: fr
MARCONI 2022D RF GENERATOR
« 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
792549-0
« Last Edit: July 23, 2019, 09:40:05 am by RADIOAMAT »
 

Offline hendorog

  • Super Contributor
  • ***
  • Posts: 1445
  • Country: nz
Re: MARCONI 2022D RF GENERATOR
« Reply #1 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
 

Offline RADIOAMAT

  • Newbie
  • Posts: 3
  • Country: fr
Re: MARCONI 2022D RF GENERATOR
« Reply #2 on: July 23, 2019, 10:26:39 am »
Hi
Thank-You for your reply, i will post too, on this forum
« Last Edit: July 23, 2019, 11:38:26 am by RADIOAMAT »
 

Offline RADIOAMAT

  • Newbie
  • Posts: 3
  • Country: fr
Re: MARCONI 2022D RF GENERATOR
« Reply #3 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
 


Share me

Digg  Facebook  SlashDot  Delicious  Technorati  Twitter  Google  Yahoo
Smf