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例1 一台SANTAK UPS—2KVA在线式UPS电源,市电断掉时,无电压输出。首先测量蓄电池端电压,为127V正常;在不接市电时,开机测量控制板上集成电路的供电电源端(0V),打开机壳检查,发现蓄电池端电压是直接送到控制板上的CN15+、CN15-,从此往后查,CN15+所接的3个10A/125V的保险全部开路,用一个30A的保除管替代,查后级电路未发现短路器件,加电,故障排除。例2 一台SANTAKM1000,开机没反应,无220V电压输出。(1)开机量CN3上的④、⑥脚电压正常(220
Example 1 a SANTAK UPS-2KVA online UPS power supply, the mains off, no voltage output. First, measure the terminal voltage of the battery, 127V is normal; when not connected to mains, turn on the power supply terminal (0V) of the integrated circuit on the control board and open the case to check that the terminal voltage of the battery is directly sent to the CN15 + , CN15-. From then on, the three 10A / 125V insurances connected to CN15 + are all open, replaced by a 30A protection tube, and no short-circuit devices, power-on and troubleshooting are found after the circuit is found. Example 2 A SANTAKM1000, boot no response, no 220V voltage output. (1) CN3 on the boot amount of ④, ⑥ pin voltage is normal (220