How do I know whether the memory module on an MPU is damaged or securely inserted on CE series switches

1

If no memory module is installed on the MPU, the MPU resets repeatedly and the RUN/ALM indicator of the MPU is steady green. Meanwhile, the following information is repeatedly displayed on the console port:
*************************************************************
*  Copyright (C) <2012-2013> Huawei Technologies Co., Ltd.  *
*****************K100********************************************

CloudEngine BIOS Version: 208  (Jul 02 2013 - 13:16:02)
Board Name ..................................... CE-MPUA
Error: invalid primary sdram width!

### ERROR ### Please RESET the board ###

If the memory module on the MPU is damaged or loosens, the MPU resets repeatedly and the RUN/ALM indicator of the MPU is steady green. Meanwhile, the following information is repeatedly displayed on the console port:
*************************************************************
*  Copyright (C) <2012-2013> Huawei Technologies Co., Ltd.  *
*************************************************************

CloudEngine BIOS Version: 208  (Jul 02 2013 - 13:16:02)
Board Name ..................................... CE-MPUA
SDR

When the memory module is working properly, the following information is displayed:
*************************************************************
*  Copyright (C) <2012-2013> Huawei Technologies Co., Ltd.  *
*************************************************************

CloudEngine BIOS Version: 208  (Jul 02 2013 - 13:16:02)
Board Name ..................................... CE-MPUA
SDRAM Memory Size .............................. 4 Gbytes
SDRAM ECC initializing ......................... DONE

Press CTRL+T for full memory test .............. skip

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