汤姆TOMA M-900D型照相机具有结构简单,使用方便,体积小巧,价格便宜等特点,社会拥有量较大。其电路如图所示。下面谈谈该相机的一些常见故障的快速检修。 一、不卷片,弱光时指示灯不亮。1.镜头开关S_1接触不良;2.电池弹片接触不良;3.电源线脱焊。 二、不卷片,弱光时指示灯亮。按住压片开关S_6,拨动卷倒片开关S_5,能够倒片。1.快门按钮连杆螺丝脱落;2.八牙轮卷片开关S_4损坏;3.三极管V_4 Tom TOMA M-900D-type camera with simple structure, easy to use, small size, low price and other characteristics, the community has a larger amount. The circuit shown in the figure. Let’s talk about some of the camera’s quick troubleshooting of common faults. First, not volume film, light when the light does not shine. 1 lens switch S_1 bad contact; 2 poor battery shrapnel contact; 3 power line desoldering. Second, do not roll film, light indicator light. Hold down the tablet switch S_6, turn the reel rewind switch S_5, can rewind. 1. Shutter button connecting rod screw off; 2. Eight-wheel reel switch S_4 damage; 3. Transistor V_4