间歇性失去心跳失败的原因有两个：
1）检查鼠笼式鼓风机风扇。
即使您努力清洁过滤器，笼子本身也会充满污垢并使测试头过热。
2）如果您有ASTEC MPU，请检查与启用接线内联的电缆线束中的电阻器。
39欧姆坏，68欧姆好。
以上来自于谷歌翻译
以下为原文
Was having intermittent lost heartbeat failures for two reasons:
1) check the squirrel cage blower fans. Even if you diligently clean the filters, the cage itself can fill with crud and allow the testhead to overheat.
2) If you have an ASTEC MPU, check the resistor in the cable harness wired inline with the enable wiring. 39 ohm bad, 68 ohm good.
间歇性失去心跳失败的原因有两个：
1）检查鼠笼式鼓风机风扇。
即使您努力清洁过滤器，笼子本身也会充满污垢并使测试头过热。
2）如果您有ASTEC MPU，请检查与启用接线内联的电缆线束中的电阻器。
39欧姆坏，68欧姆好。
以上来自于谷歌翻译
以下为原文
Was having intermittent lost heartbeat failures for two reasons:
1) check the squirrel cage blower fans. Even if you diligently clean the filters, the cage itself can fill with crud and allow the testhead to overheat.
2) If you have an ASTEC MPU, check the resistor in the cable harness wired inline with the enable wiring. 39 ohm bad, 68 ohm good.
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