Specifications

47
ERR FW2
General firmware problem.
d=nnn identifies the type of
error (report to Elecraft).
Follow steps shown for ERR DS1.
ERR IOA,
ERR IOB
RF board I/O expander A or B
unresponsive.
Turn power off and open the KX3’s enclosure. Make sure
the cable between the Control Panel board and RF Board
is fully seated at both ends and is not damaged. Close the
enclosure. Turn power on. Reload MCU and DSP
firmware. If error codes persist, turn power off, remove all
option modules (KXAT3, KXFL3, etc.), and turn power
back on. Turn off associated option module enables in the
menu (pg. 35), then turn power off and back on. If this
corrects the problem, re-install the option modules one at a
time to see which one may be causing the problem. If
errors persist, the Control Panel or RF Board may have to
be replaced. Write down error codes and data values (on
VFO A) before contacting Customer Support.
ERR KEY,
ERR PTT
Attempt to key the transmitter
or activate PTT during power-
on sequence. (Note: If ERR
PTT occurs, VOX transmit is
disabled in all modes. Re-
enable using the VOX switch.)
Usually caused by an incorrect setting of MENU:MIC
BTN for the current microphone, or an external device
shorting the KEY or PTT line to ground, or a shorted
KXPD3 keyer paddle. Turn power off, then disconnect the
KXPD3 (if applicable) and everything plugged into the
left side panel, except for the power supply. Turn power
back on. If the problem has disappeared, plug devices
back in one at a time to see which one caused the error.
ERR OSC
Synthesizer IC unresponsive
Follow steps for ERR IOA.
ERR RFB
RF board may be disconnected
from Control Panel board
Follow steps for ERR IOA.
ERR RFK
RF board relay failure (on VFO
A, d=nnn identifies the failing
relay, e.g. 001 for relay K1)
Follow steps for ERR IOA.
ERR TX6,
ERR TX7
Transmit power MOSFET Q6
or Q7 bias out of range
Follow steps for ERR IOA.
ERR TXG
Transmit gain constant out of
range
If this only occurs on one or two bands, there could be a
problem with a band-pass or low-pass filter. Also try re-
doing Transmit Gain calibration (pg. 33).
ERR TXC,
ERR TXS
Transmit attempt without first
calibrating TX BIAS in CW
(TXC) or SSB (TXS) mode
Perform Transmit Bias calibration (pg. 33). This is a
fully-automated procedure that requires no test equipment.
ERR TXN
Transmit attempt without first
nulling the carrier on present
band
Transmit Carrier calibration must be redone (pg. 34).
This procedure requires a spectrum analyzer and is
normally done only at the factory.
ERR TXO
Transmit attempt without first
nulling the opposite sideband
on present band
Transmit Sideband calibration must be redone (pg. 34).
This procedure requires a spectrum analyzer and is
normally done only at the factory.
ERR TXP
Transmit attempt without first
calibrating gain on present band
Follow steps for ERR TXC.
ERR TOS,
ERR TPA
Synthesizer or power amplifier
temperature sensor out of range
Follow steps for ERR IOA.
ERR VOX
VOX activation detected at
power-on
Usually caused by audio at the mic at power-on, with
VOX enabled for voice modes. Turn power off, then
disconnect the mic. Turn power back on. Turn voice-mode
VOX off or reduce VOX gain.