E400001 - 索尼 电视

中文

含义

错误码E400001表示散热风扇故障。该代码由系统的风扇转速监控电路触发，表示检测到风扇转速低于设定阈值或完全停止，可能导致系统触发降频保护或过热关机。

常见原因

1. 风扇轴承进灰或润滑油干涸，转速下降或卡死
2. 风扇驱动信号（PWM）线断裂或连接器松动
3. 风扇霍尔传感器（Hall Sensor）失效，转速反馈信号丢失
4. 风扇供电电压不足（额定12V降至5V以下）
5. 风扇叶片变形或被线材阻挡导致停转

自助排查

1. 开机后听风扇是否有运转声，用手背感受出风口是否有气流
2. 断电后打开后盖，手动拨动风扇叶片检查是否转动顺畅
3. 使用万用表测量风扇供电电压是否为额定12V
4. 如风扇供电正常但不转，更换同规格风扇测试

English

Meaning

Error code E400001 indicates a cooling fan failure. This code is triggered by the system’s fan speed monitoring circuit, indicating that the fan speed has dropped below the set threshold or has stopped completely, which may cause the system to trigger throttling protection or thermal shutdown.

Common Causes

1. Fan bearing dust ingress or lubricant dried up, causing reduced RPM or seizure
2. Fan PWM drive signal wire broken or connector loose
3. Fan Hall Sensor failed, tachometer feedback signal lost
4. Fan supply voltage insufficient (rated 12V dropped below 5V)
5. Fan blade deformed or obstructed by internal wiring

Self-Check Steps

1. Listen for fan operation sound after power-on, feel for airflow at the vent with your hand
2. Power off, open the back cover, and manually spin the fan blades to check for smooth rotation
3. Measure the fan supply voltage with a multimeter — should be the rated 12V
4. If power is normal but the fan does not spin, replace it with an equivalent model