Use multimeter measuring machine interface socket BATT voltage and voltage normal ACC. To be removed in machine, all the connecting cable inside the machine after the collapse of a careful check all normal. Even on the host, after electrify intermittently reversal lifting motor, but again outage protection. At this point, the elevator heart machinery is located in the most high-end, the disk position. 8 in the motor intermittently turn when down and working voltage are tested according to the main board is normal. Because of all sorts of voltage are normal, analysis the CPU to understand that there is no problem; Lifting motor intermittently inversion, the CPU is unable to correctly detect elevator position. The heart is because the CPU is through the photoelectric circuit breaker D117 to detect the location of the elevator heart, therefore doubt D177 dirt or damage, the CPU test does not reach the designated position Tuo information. Hence clean with anhydrous alcohol photoelectric circuit of transmitting and receiving groove surface after commissioning, failure remains. Directly replace D177 still is invalid. ufLservice manual download site
 ufLservice manual download site
 ufLservice manual download site
Normal, initialized the machine after the electricity will be set up, the elevator heart at a lowest place mechanical device (1) disc, after electrify, pull hook would accept with and out, and then lifting motor driven elevator heart moved to disc 8 position, then return to the lowest he. And this machine elevator heart has been in 8 disc position, after the electric hoist motor begins to intermittently turn, even if the human heart will lift move to the location of the first disc, after electrify will still move it to the position of the disc 8, and then repeat the action. The machine in the CPU detection elevator heart disorder, location information can make the CPU cannot judge elevator heart of the current position, it closes the SW01 start lifting motor, counter to count in the position of the CPU. After the electricity use multimeter to measure the CPU 58 feet no voltage, doubt is a fault detection circuit, lead to no voltage IC600 58 feet. Check SW01, R681 were normal. After cleaning circuit board is invalid, then segmented isolation method is used to check, will take off after electrify, J601 IC600 58 foot measuring voltage, up to 5 v, use tweezers to J601 short sub, IC600 58 feet voltage and reduced to 0 v, doubt is SW01 leakage. Because at that time can't find the parts replaced. Hence will take off, SW01 into banana water for more than three hours after trial, troubleshooting.

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