车间维修的一台65G8210机机器出现背光亮，黑屏问题。连接串口，有如下打印信息：
[2182 ERROR-HI_PDM]:DRV_PDM_GetPanelIndex[922]:Medium panel index[19] is out of range[18]!
[2201 ERROR-HI_PDM]:DRV_PDM_GetPanelIndex[922]:Medium panel index[19] is out of range[18]!
[2209 ERROR-HI_PDM]:DRV_PDM_ReadPanelBody[998]:ERR: HI_DB_GetKeyByName Failure!
[2216 ERROR-HI_PDM]:DRV_PDM_GetPanelParam[1021]:Call PDM_ReadPanelBody Failure!
[2223 ERROR-Invalid]:PANEL_DRV_CheckPanelRect[64]:[Func]:PANEL_DRV_CheckPanelRect [Line]:64 [Info]:[2231 ERROR-Invalid]:PANEL_DRV_CheckPanelRect[64]:Panel width invalid!
[2238 ERROR-Invalid]:HI_DRV_PANEL_Init[1407]:[Func]:HI_DRV_PANEL_Init [Line]:1407 [Info]:[2245 ERROR-Invalid]:HI_DRV_PANEL_Init[1407]:Get PanelInfo from PDM failed or PanelInfo Illegal!!
[2268 ERROR-HI_PDM]:DRV_PDM_GetPanelIndex[922]:Medium panel index[19] is out of range[18]!
[2287 ERROR-HI_PDM]:DRV_PDM_GetPanelIndex[922]:Medium panel index[19] is out of range[18]!
[2295 ERROR-HI_PDM]:DRV_PDM_ReadPanelBody[998]:ERR: HI_DB_GetKeyByName Failure!
[2302 ERROR-HI_PDM]:DRV_PDM_GetPanelParam[1021]:Call PDM_ReadPanelBody Failure!
[2321 ERROR-HI_PDM]:DRV_PDM_GetPanelIndex[922]:Medium panel index[19] is out of range[18]!
[2340 ERROR-HI_PDM]:DRV_PDM_GetPanelIndex[922]:Medium panel index[19] is out of range[18]!
[2348 ERROR-HI_PDM]:DRV_PDM_ReadPanelBody[998]:ERR: HI_DB_GetKeyByName Failure!
[2355 ERROR-HI_PDM]:DRV_PDM_GetPanelParam[1021]:Call PDM_ReadPanelBody Failure!
根据打印信息显示，当前EEPROM中的屏参为19，而软件支持屏参范围只到18 ，因此会出现黑屏问题。可能是由于升级了8200-8H80的软件导致。
尝试进入recovery模式重新升级，但是无法进入到recovery（有可能是已经进入，但是屏幕无法显示），因此，使用Hitool工具重新烧写boot程序，然后进入recovery模式，重新升级65G8210主程序后，故障排除。