[Elecraft] K2 - "INFO 80 " problem

[Christophe F8ACF-56]

hello juliano, 

I'll put the single "080 info" Book of troubleshooting, if it can help you



If you saw the message INFO 080, the 
I/O controller (IOC, RF-U1) or other auxBus 
device did not respond to messages from the 
main processor (MCU). Turn power OFF and 
back ON; if you hear some relays switching 
on power-up, the IOC may be OK, and the 
problem is likely to be with the AuxBus 
(081) 
  If you do not hear any relays switching on 
power-up, your IOC (RF-U1) may be 
defective. Inspect U1 carefully to see if you 
have installed it backwards or if any pins are 
bent. 
  Pull U1 out, check its pins, then re-install it, 
making sure all pins make good contact with 
the IC socket. Check the 4-MHz oscillator 
(075).
  Remove the bottom cover and verify that all 
pins of U1’s socket are soldered, as well as 
those of the 6V regulator (RF-U2), and U1’s 
4 MHz oscillator (RF-Z5). 
  With power ON, check all voltages 
associated with U1. You should see 6V at 
pins 1 and 20 at all times, even when the IOC 
is sleeping (not being accessed by the MCU).


 

K2 SN 7369


73 , Christophe F8ACF-56


________________________________
 De : Giuliano <giulianori at virgilio.it>
À : elecraft at mailman.qth.net 
Envoyé le : Jeudi 27 mars 2014 7h02
Objet : [Elecraft] K2 - "INFO 80 " problem
 

I bought a K2 SN 670 to complete my collection Elecraft.
I now have K1, K2 and K3 + P3.
The K2 serial number  is very low and I think some changes are essential 
and others less so. Can anyone tell me what mods are the really important?
I also have a problem that occurs very frequently: when I change band 
+/-, very often comes out "INFO 080". What can I do?
Thanks for the help
I0CG Italy
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