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例1机型:CLD—S260型故障现象:通电开启电源开关后,激光头一直往一个方向移动,整机无法工作。分析检修:卸下该机的上盖,开启电源开关观察,激光头组件就一直朝影碟机的后边移动,并且移动速度很快,一直移到碰后边的机壳时。激光头驱动电机还没有停止动作,只好断电强制移动停止。通过分析怀疑激光头驱动集成电路IC_(607)(LA6501)或其供电可能有故障,测量其各脚直流电压,发现激光头驱动集成电路的两组(+12V、-12V)供电+12V正常,而-12V却
Example 1 Model: CLD-S260 type Symptom: Power Turn on the power switch, the laser head has been moving in one direction, the machine can not work. Analysis and Maintenance: Remove the machine cover, open the power switch to observe the laser head assembly has been moving toward the rear of the DVD player, and moving fast, has been moved to touch the rear case. Laser head drive motor has not stopped action, forced to stop moving forced shutdown. By analyzing the suspected driver IC IC 607 (LA6501) or its power supply may be faulty, measuring the DC voltage of each pin and found that two sets of laser head driver integrated circuits (+ 12V, -12V) power supply + 12V normal, But -12V is