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I bought an HP3596B off EBay.
?I have a service manual on order.
?First thing I did was remove the leaky battery and thoroughly clean the PS board.
It looks good, however if I look down to the edge connector inside the unit I can see it has the blue
buildup on it from the battery leak. I'll save that until I disassemble to clean and lube the switches.
?At power up the self calibration comes back with CE-F.
One poster suggested I put in? Recall, Decimal point, Center Frequency ,8, when I do it comes back with
Fail? 1? 0.
?Anyone have info on what the error codes denote?
????????????????????????????????????? Thanks, Lamont

Lamont,

CE-F F is Weighed Filter under CAL cards A21, A22, A70 If A60S2(2) is OPEN and an A70 impairments board (Option 003) is not installed, CE-F will always occur during the CAL Cycle.

I have found connectors causing this problem.
All this stuff is clearly documented, just Google and read the documentation. This unit is a popular piece of equipment, and there is no lack of weeks upon weeks worth of user input.

Dennis



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One thing to note, is when the keyboard springs fail,
the button feels dead, but can get stuck in a depressed
position, which bothers the power on self test.

If you have any dead keys, fix them first.

-Chuck Harris

nojunk@... [hp_agilent_equipment] wrote:

I have an A70 board, so not a switch problem, I have removed, wiped doen the edge connector, it already looked good and reseated it. That didn't help.
?As a troubleshooting method can I remove the A70 PCB, can I close the A60S2(2) switch, then rerun the CAL.
If it doesn't respond with CE-F, can I conclude a problem with A70?
???????????????????????? Thanks, Lamont

I have not noticed any dead keys, but I'll run another check. I have some that click with slight force and others that work but don't click.
???????????????????????? Thanks, Lamont

Lamont,

Associated circuitry in A21, A22, would also need to be verified before you conclude defective A70.

Dennis

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The keypad switches have a leaf spring that has to buckle
in order for the switch contact to actuate.

Those that make a loud and forceful clunk have sticky grease
that is effectively gluing the leaf to the plastic parts.

If a button doesn't spring, and then suddenly release, as you
press it, it is probably defective.

As a way of visualizing what is happening, the leaf spring has
holders on each of its ends that because the spring is longer
than the space between the holders, force the spring into a
curved "L" shape up against the key plunger, and base. When
you press the key, you are making the space even shorter, and
the spring's curve presses even tighter into the crook of the
"L". When the key's pressure makes it so tight that the spring
cannot move any farther into the crook, the spring pops up,
making a knee, on the bottom of the "L".

If you cannot feel that happen, the spring is either missing, or
is creased. Missing springs will usually be hanging around
somewhere in the front panel area, and can be replaced. Bent
springs can usually be straightened by stroking the crease out
of the spring with a small stick.

Chuck Harris

nojunk@... [hp_agilent_equipment] wrote:

>Associated circuitry in A21, A22, would also need to be verified before you conclude defective A70.

?I'm a little confused by that, if I remove A70 and close the switch and it then the unit runs a proper CAL,
?wouldn't that say A21 and A22 were good?
????????????????????? Thanks, Lamont

P.S. I'm not sure what the A70 boards does, maybe an explanation of that would help.