Iot-Ess Communication Failure 19; Iot-Ess Initialization Failure; Page Sync Illegal Start; Page Sync Illegal Stop - Panasonic DP-C321 Service Handbook

3-12
003-356 IOT-ESS Communication Failure 16
BSD on : CH12.2B
[Detection Conditions]
The NAK that notifies the occurrence of the
communication failure is received. (An overrun error
is found in the hardware the UART itself has.)
[Actions]
Turn the power On/Off and perform the following if
the problem persists.
(1) Check the connection of the MCU PWB
Connection Harness.
(2) Software matching error. Perform re-installation of
the software.
(3) If the problem persists after the above actions,
replace the MCU PWB (PL13.1).
003-357 IOT-ESS Communication Failure 17
BSD on : CH12.2B
[Detection Conditions]
The NAK that notifies the occurrence of the
communication failure is received. (Abortion of
receiving is detected after a header is recognized.)
[Actions]
Turn the power On/Off and perform the following if
the problem persists.
(1) Check the connection of the MCU PWB
Connection Harness.
(2) Software matching error. Perform re-installation of
the software.
(3) If the problem persists after the above actions,
replace the MCU PWB (PL13.1).
003-358 IOT-ESS Communication Failure 18
BSD on : CH12.2B
[Detection Conditions]
The paper feed and paper output that are not
applicable to the NBR are detected.
[Actions]
Turn the power On/Off and perform the following if
the problem persists.
(1) Check the connection of the MCU PWB
Connection Harness.
(2) Software matching error. Perform re-installation of
the software.
(3) If the problem persists after the above actions,
replace the MCU PWB (PL13.1).

003-359 IOT-ESS Communication Failure 19

BSD on : CH12.2B
[Detection Conditions]
An abnormal parameter is set as the argument for the
receiving function.
[Actions]
Turn the power On/Off and perform the following if
the problem persists.
(1) Check the connection of the MCU PWB
Connection Harness.
(2) Software matching error. Perform re-installation of
the software.
(3) If the problem persists after the above actions,
replace the MCU PWB (PL13.1).
Chapter 3 Troubleshooting

003-360 IOT-ESS Initialization Failure

BSD on : CH12.2B
[Detection Conditions] IOT Driver initialization failure.
[Actions]
Turn the power On/Off and perform the following if
the problem persists.
(1) Check the connection of the MCU PWB
Connection Harness.
(2) Software matching error. Perform re-installation of
the software.
(3) If the problem persists after the above actions,
replace the MCU PWB (PL13.1).

003-362 Page Sync Illegal Start

BSD on : CH12.2C
[Detection Conditions]
At IOT output, the PageSync is active before the FIFO
becomes full by writing the output data.
[Actions] This failure is currently not displayed.

003-363 Page Sync Illegal Stop

BSD on : CH12.2C
[Detection Conditions]
At IOT output, PageSync is negated before the
specified paper size is output.
[Actions] This failure is currently not displayed.