Panasonic DP-C321 Service Handbook page 83

003-334 IISS-ESS Communication Failure 15
BSD on : CH12.2A
[Detection Conditions]
SCOPE-FD receiving error that will be detected by the
Controller (Flaming Error)
The NAK that notifies the occurrence of the
communication failure is received. (A Flaming 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 IIT/IPS (PL16.3)
Connection Harness.
(2) Software matching error. Perform re-installation of
the software.
(3) If the problem persists after the above actions,
replace the IIT/IPS (PL16.3).
003-335 IISS-ESS Communication Failure 16
BSD on : CH12.2A
[Detection Conditions]
SCOPE-FD receiving error that will be detected by the
Controller (Overrun error)
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 IIT/IPS (PL16.3)
Connection Harness.
(2) Software matching error. Perform re-installation of
the software.
(3) If the problem persists after the above actions,
replace the IIT/IPS (PL16.3).
3-9
003-336 IISS-ESS Communication Failure 17
BSD on : CH12.2A
[Detection Conditions]
SCOPE-FD receiving error that will be detected by the
Controller (Receiving Abortion Error)
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 IIT/IPS (PL16.3)
Connection Harness.
(2) Software matching error. Perform re-installation of
the software.
(3) If the problem persists after the above actions,
replace the IIT/IPS (PL16.3).
003-340 IOT-ESS Communication Failure 1
BSD on : CH12.2B
[Detection Conditions]
An abnormal parameter is set as the argument for the
sending 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).
003-341 IOT-ESS Communication Failure 2
BSD on : CH12.2B
[Detection Conditions]
ACK cannot be received after resending it twice. (The
Sequence No. of the message packet that has been sent
is not correct.)
[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).
003-342 IOT-ESS Communication Failure 3
BSD on : CH12.2B
[Detection Conditions]
ACK cannot be received after resending it twice. (The
Packet No. of the message packet that has been sent is
not correct.)
[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