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ER151, DUC missing: The digital up-converter module was not
detected on power-up, 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.
ER152, DDC1 missing: The main receiver's digital down-converter
module was not detected on power-up, which may result 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.
ER153, DDC2 missing: The sub receiver's digital up-converter
module was not detected on power-up, which may result in
incorrect sub receiver behavior. This may be due to the module
being unplugged or other hardware problem. Contact Elecraft for
possible troubleshooting instructions.
ER154, DAP missing: The digital audio processor module was not
detected on power-up, which may result in incorrect DVR behavior,
loss of streaming audio during remote control, or other audio
issues. This may be due to the DAP controller being un-
programmed or other hardware problem. Contact Elecraft for
possible troubleshooting instructions.
ER155, DDC/DUC missing: Both the digital up-converter and digital
down-converter modules were not detected on power-up, 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.