I have an 8562a that shows ERR303 and ERR304 indicating an unlock condition. Is this typically an issue on the A14 board or, the YTO? 300MHz cal signal is close but not exact, off by a few Mhz, everything else appears to be working. Any help, suggestions welcome...
Bob
bfehn at metcom dot org
Bob
bfehn at metcom dot org
ERR 303 is the Transfer Roller Oscillator Unlock error and ERR 304 is the Main Roller Oscillator Unlock error.
The roller oscillators are on the A14 Frequency Control board. Check to make sure these are the ONLY errors (press RECALL, MORE, RECALL ERRORS and use the up/down arrows to scroll through all the errors in the error queue).
Assuming there are no other error messages, the A14 board is your most likely culprit.
I hope this helped -