Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems.

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Posts: 8
Default WTD: Schematic or link to online source for same Kenwood TM261A

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.

Gord VE1AJF

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Posts: 9
Default WTD: Schematic or link to online source for same Kenwood TM261A

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.

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.

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.

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

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

Gord VE1AJF


Dave VE3DRD


--
dave06a@ Low-cost firmware development tools: www.dunfield.com
dunfield. Classic computer collection: www.classiccmp.org/dunfield
com Some stuff I have for sale: www.dunfield.com/sale

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Posts: 8
Default WTD: Schematic or link to online source for same Kenwood TM261A

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





--
dave06a@ Low-cost firmware development tools: www.dunfield.com
dunfield. Classic computer collection: www.classiccmp.org/dunfield
com Some stuff I have for sale: www.dunfield.com/sale



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Posts: 136
Default WTD: Schematic or link to online source for same Kenwood TM261A

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





--
dave06a@ Low-cost firmware development tools: www.dunfield.com
dunfield. Classic computer collection: www.classiccmp.org/dunfield
com Some stuff I have for sale: www.dunfield.com/sale





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Posts: 8
Default WTD: Schematic or link to online source for same Kenwood TM261A

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





--
dave06a@ Low-cost firmware development tools: www.dunfield.com
dunfield. Classic computer collection: www.classiccmp.org/dunfield
com Some stuff I have for sale: www.dunfield.com/sale








  #6   Report Post  
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Posts: 136
Default WTD: Schematic or link to online source for same Kenwood TM261A

Do you have the "owners" manual to do a "reset" - even though you said you
tried doing one? I looked for a copy of the manual - but - the one I found,
all the pages weren't there. It was missing about the last 15 or so.

I hope you can find the issue..... If someone has a "full" copy of the
"owners" manual, "schematic" or "Service" manual, maybe some ideas can be
tried. I'll look around, but hopefully others can hop in and help.

"Gord S" wrote in message
...
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





--
dave06a@ Low-cost firmware development tools: www.dunfield.com
dunfield. Classic computer collection: www.classiccmp.org/dunfield
com Some stuff I have for sale: www.dunfield.com/sale








  #7   Report Post  
Posted to sci.electronics.repair,rec.radio.amateur,rec.ham-radio
external usenet poster
 
Posts: 8
Default WTD: Schematic or link to online source for same Kenwood TM261A

I do have the owners manual, so that I can see how the radio is supposed
to operate and be reset if desired. Nothing seems ambiguous to the
instructions. This isn't my radio and was brought to my bench for the
appearance of the problem as described - owner is competent in it's
operation etc. Thanks for taking the time to reply so far!

radiosrfun wrote:

Do you have the "owners" manual to do a "reset" - even though you said you
tried doing one? I looked for a copy of the manual - but - the one I found,
all the pages weren't there. It was missing about the last 15 or so.

I hope you can find the issue..... If someone has a "full" copy of the
"owners" manual, "schematic" or "Service" manual, maybe some ideas can be
tried. I'll look around, but hopefully others can hop in and help.

"Gord S" wrote in message
...

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





--
dave06a@ Low-cost firmware development tools: www.dunfield.com
dunfield. Classic computer collection: www.classiccmp.org/dunfield
com Some stuff I have for sale: www.dunfield.com/sale








  #8   Report Post  
Posted to sci.electronics.repair,rec.radio.amateur,rec.ham-radio
external usenet poster
 
Posts: 1
Default WTD: Schematic or link to online source for same Kenwood TM261A

Just wish I had a copy of the "Service Manual" to help more - but I
don't......... I'm sure they're out there - for the purchase - which is what
it appears the next step "might" be. I don't know what else to suggest being
I don't have any of the manuals here to refer to. Sorry "I" can't be of more
help at the moment. Sometimes, it is a matter of overlooking the minor
stuff - which is why I also asked if you had done that. I've been there and
done that as I'm sure you and many other's have. IF I can come up with
anymore info - I'll pass it along. Right now - without schematics, etc....
I'm in the dark too. Good luck!

Just a sec...... Got to "Rec.Radio.Swap" - there was a guy - not sure if he
floats in these groups or not - his name is Cliff. Used to have a Kenwood
Shop. Ask for him - or post your query there - maybe he'll pick up on it and
be able to give a hand.



"Gord S" wrote in message
...
I do have the owners manual, so that I can see how the radio is supposed
to operate and be reset if desired. Nothing seems ambiguous to the
instructions. This isn't my radio and was brought to my bench for the
appearance of the problem as described - owner is competent in it's
operation etc. Thanks for taking the time to reply so far!

radiosrfun wrote:

Do you have the "owners" manual to do a "reset" - even though you said
you tried doing one? I looked for a copy of the manual - but - the one I
found, all the pages weren't there. It was missing about the last 15 or
so.

I hope you can find the issue..... If someone has a "full" copy of the
"owners" manual, "schematic" or "Service" manual, maybe some ideas can be
tried. I'll look around, but hopefully others can hop in and help.

"Gord S" wrote in message
...

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





--
dave06a@ Low-cost firmware development tools: www.dunfield.com
dunfield. Classic computer collection: www.classiccmp.org/dunfield
com Some stuff I have for sale: www.dunfield.com/sale










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