MX-M264U TROUBLESHOOTING 7 – 22
(4) Relation between the MFPC PWB LED status and errors
When the machine cannot be booted, check the LED status of the MFPC PWB to presume the error content and its cause.
<Process content and LED display>
* : LED ON / : LED OFF
<When an error occurs>
* In case of an error, the LED's flash as shown in the above table.
* : LED ON / : LED OFF
LED status (Lighting) Process operation content Cause for halt during operation
CPU initial setting Reus ASIC trouble
Memory adjustment Memory and its peripheral circuit trouble
Memory check Memory and its peripheral circuit trouble
––
Program memory development Memory-related trouble
Interruption-related initialization Reus ASIC trouble
PCIe initialization PCIe and its peripheral circuit trouble (SoC/ACRE, etc.)
Basic device initialization Reus ASIC trouble
SD card initialization
SATA initialization
Reus ASIC trouble
SD card trouble
HDD trouble
OS initialization (1) Reus ASIC trouble
Timer enabling Reus ASIC trouble
Serial driver enabling
I2C driver enabling
Reus ASIC trouble
LCD initialization Reus ASIC trouble
Image process IP initialization Reus ASIC trouble
OS initialization (2) Reus ASIC trouble
Main process Reus ASIC trouble
LED status (Flashing) Error content Cause
Nonsupport memory Memory trouble
Nonsupport memory (access speed) Memory trouble
Nonsupport memory controller Memory trouble
DDR-PHY setting error Reus ASIC trouble
Interruption handler process error Reus ASIC trouble
Memory check error Memory trouble
Memory combination error Memory trouble
LED No.
D25/D24/D23/D22
3/ 2/ 1/ 0
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