Thanks for the reply radiosrfun! I don't believe this radio is in a
lock mode as I don't see the lock "key" symbol indicating on the lcd
display (as it should indicate). It basically seems that the radio has
one symptom which is that the Function key has no effect (other than to
indicate that it's basically working by causing a beep when pressed).
Having said that, I can not reset anything either so despite not
indicating a LOCK condition, the processor doesn't seem to be
re-configurable.


radiosrfun wrote:

Sounds to me, like you're missing a "lock out" command too. Check the manual
for such a function. You're probably right about the "Mic" lock switch, if
it is as I've usually seen.


"Gord S" wrote in message
...

Howdy Dave and thanks for the reply......at this point I've been sent a
schematic and am studying it. The current operational status of the radio
is that it has programmed frequencies and the display is in CHANNEL mode
and, as programmed, the radio transmits normally (including DTMF) and
receives normally. I can't change the display however or enter into VFO
mode. The rotary encoder works (just selects these channels). The MR or
memory recall button only functions to activate a scan of the channels (by
holding it in for 1sec). All pushbuttons indicate with a beep when
pressed (and a second beep is emitted after approx 1.5 secs if held
pressed). In reply to your questions......

Dave Dunfield wrote:


Per the subject line or would like to talk to anyone who is familiar with
the memory or mode control of the memory or processor in this
radio. I'm looking at a function "F" button (switch) that works (beeps
and will cause a press-time-out) but doesn't otherwise effect any
control.


Sorry, no tech info, but a couple of thoughts.

The fact that it beeps indicates that the key is being scanned, and that
the microprocessor is running. When you way "Press timeout" do you
mean that the "F" indicator lights, then goes out after an appropriate
time
out period of no activity.


Agreed. The "F" indicator should show a second "F" on the LCD display if
I read the basic instruction manual correct - and it doesn't. There is a
beep when I press the button, and a second one approx 1.5 secs later if
held pressed (my reference to a timer), however the display doesn't change
with any attempt at a function change.



If so, this tells us that the key is being scanned correctly (interpreted
as
Function). If no "F" indicator, there may be a fault in the keyboard
matrix
which is causing the key to be interpreted as something else.


Good point - will investigate.



Do all of the other keys work normally? If so, and the "F" indicator is
lighting when you press Function, then it pretty much has to be a
"software" issue, the microprocessor is not acting on the key properly.


As mentioned above.....keys beep but no change can be made, no alternative
display or menu can be brought up.



If other functions don't work, then the radio could be locked - Press F
then LOCK (leftmost key iirc) to unlock it.


I'm not seeing a LOCK key except for a lock slide switch on the rear of
the mic. I doubt this does more than disable the mic keys but I tried it
with any combination I could think of - zippo.



If that't not it, try a full reset - hold MR while power-on, then
release,
and when you get "all segments on" on the LCD, press MR again.


I had hoped this might work, but it doesn't.....As above, the button will
beep if pressed and cause a channel scan if pressed 1sec but otherwise
will not effect a reset when pressed in conjunction with the power on (I'm
used to having done this on other equipment). No "all segments on"
either.....just a power up to the channel display operating condition.



That should restore the radio to factory defaults (you will use you
programmed memoryies etc.).



I'm currently looking at the diagram to see where the key-pressed "beep"
comes from......thinking if it's the micropro, then it is probably
receiving the command (but may be otherwise disabled at another pin). If
external, then I've got more digging to do.



Gord VE1AJF


Dave VE3DRD





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