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ER170, K4FP comm failure: Contact was lost with the front panel
module, which may result in incorrect basic functionality. This may
be due to a dislodged or intermittent USB cable or other hardware
problem. Contact Elecraft for possible troubleshooting
instructions.
ER171, DUC comm failure: Contact was lost with the digital up-
converter module, which may result in incorrect transmit behavior.
This may be due to the module being unplugged or other hardware
problem. Contact Elecraft for possible troubleshooting
instructions.
ER172, DDC1 comm failure: Contact was lost with the main
receiver's digital down-converter module, resulting in incorrect
main or sub receiver behavior. This may be due to the module
being unplugged or other hardware problem. Contact Elecraft for
possible troubleshooting instructions.
ER173, DDC2 comm failure: Contact was lost with the sub
receiver's digital down-converter module, resulting in incorrect sub
receiver behavior. This may be due to the module being unplugged
or other hardware problem. Contact Elecraft for possible
troubleshooting instructions.
ER174, DAP comm failure: Contact was lost with the digital audio
processor module, which may result in incorrect DVR behavior, loss
of streaming audio during remote control, or other audio issues.
This may be due to the module being unplugged or other hardware
problem. Contact Elecraft for possible troubleshooting instructions.
ER175, DDC/DUC comm failure: Contact was lost with both the
digital up-converter and digital down-converter modules, which
may result in incorrect receive and transmit behavior. This may be
due to a problem with the DPU module (digital processing unit)
which acts a mother board for the DUC and DDC modules. Contact
Elecraft for possible troubleshooting instructions.