Sharp MX-M266N

MX-M316N 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 / O: LED OFF
<When an error occurs>
* In case of an error, the LED's flash as shown in the above table.
* : LED ON / O: LED OFF
LED status (Lighting) Process operation content Cause for halt during operation
OOOO CPU initial setting Reus ASIC trouble
OOO Memory adjustment Memory and its peripheral circuit trouble
OO O Memory check Memory and its peripheral circuit trouble
OO - -
O OO Program memory development Memory-related trouble
O O Interruption-related initialization Reus ASIC trouble
O O PCIe initialization PCIe and its peripheral circuit trouble (SoC/ACRE, etc.)
O Basic device initialization Reus ASIC trouble
OOO SD card initialization
SATA initialization
Reus ASIC trouble
SD card trouble
HDD trouble
O OS initialization (1) Reus ASIC trouble
O O Timer enabling Reus ASIC trouble
O Serial driver enabling
I2C driver enabling
Reus ASIC trouble
O LCD initialization Reus ASIC trouble
O Image process IP initialization Reus ASIC trouble
O OS initialization (2) Reus ASIC trouble
Main process Reus ASIC trouble
LED status (Flashing) Error content Cause
OOO Nonsupport memory Memory trouble
OO O Nonsupport memory (access speed) Memory trouble
OO Nonsupport memory controller Memory trouble
O OO DDR-PHY setting error Reus ASIC trouble
O O Interruption handler process error Reus ASIC trouble
OOO Memory check error Memory trouble
Memory combination error Memory trouble
LED No.
D25/D24/D23/D22
3 / 2 / 1 / 0