?HC HC8813 Maintenance Manual page 38

HO CHIER
fixing screws are loose..
(3)檢測變壓器是否引起高溫。
Check the transformer Whether it causes high temperatures.
(4)定期清潔灰塵，切記請勿使用壓縮空氣清潔。
Clean the dust regularly, remember not to use compressed air to clean.
(5)檢視 RELAYS 接點是否積留太多的碳。
Check if the RELAYS contact has accumulated too much carbon.
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