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Knowledge Base

How to handle a HARD_ERR alarm reported by the LWXS board

Publication Date:  2012-07-25  |   Views:  224  |   Downloads:  0  |   Author:  t00116129  |   Document ID:  EKB0000347184

Contents

Issue Description

The LWXS board reports a HARD_ERR alarm, of which the parameters are 0x15, 0x02, 0x04, 0xff, and 0xff.
The details of the LWXS board is as follows:
Board type: TN11LWXTS03
Version information:
PCB Version : TN11LWX VER.B
BIOS Version : 2.23
ExtBIOS Version : 2.23
Software Version : 1.15
Logic Version : (U62)110 
 

Alarm Information

HARD_ERR alarm (reported by the LWXS board), of which the parameters are 0x15, 0x02, 0x04, 0xff, and 0xff 

Handling Process

Patch the LWXS board through Load Patch Software of the T2000.
Patch name: LWX1.15PACH001
Location of the patch: http://support.huawei.com/support/pages/editionctrl/catalog/ShowVersionDetail.do?actionFlag=getDetail&node=000001354374&colID=ROOTWEB|CO0000000065 
 

Root Cause

As explained by the R&D Department, the alarm parameters have the following meanings:
0x15: indicates equipment.
0x02: indicates an I2C component.
0x04: indicates an AND2818 chip.
The cause of the alarm is as follows: Hardware design is modified to remove an AND2818 chip, but the software is not modified accordingly and still checks the chip. As a result, the software detects abnormal communication and reports that the chip fails. This problem should be solved through a patch. 
 

Suggestions

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