电赛期间电路故障快速检查单 Rev1.0
电赛备赛时随手写的一个 Quick Reference Handbook。
辛苦搭建好的电路没有实现预期功能？别急着怀疑自己的硬件设计或者写好的代码，先按照这个 QRH 来把一些基础问题排查一下。
相信你有过这样的经历：忙活了半天，查来查去费了老大劲儿，最后发现是某个模块电源没接......
一、上电前检查单
- 释放静电·······························执行
- 导线连接·······························执行
- 电路极性·······························检查
- 电压电流设定·······················调整
- 交叉检查·······························建议
二、上电时检查单
- 电源指示灯··················(如果有)·················检查
- (如果)亮度低或不亮——
- 断电
- 电压电流设定检查
- 电路连接检查（包括断路、短路）
- 亮度正常——
- 继续
- (如果)亮度低或不亮——
- 温度···························································检查
- (如果)明显偏高——
- 断电
- 万用表测量电阻值
- 检查元件是否损坏
- (如果)明显偏高——
- 冒烟···························································检查
- (如果)冒烟——
- 断电
- 移除故障元件
- 检查电路连接
- 检查电压电流电阻
- 更换元件
- (如果)冒烟——
- 功能测试···················································执行
- (如果)功能异常——
- 杜邦线·········································检查
- 连接紧固性··························检查
- 通断性··································检查
- SMA线紧固性·····························检查
- SMA线接头虚接脱落··················检查
- 杜邦线·········································检查
- 功能正常——
- 完成
- (如果)功能异常——
三、上电后检查单
- 电源······································切断
- (如果)锂电池供电——
- (建议)检查剩余电量
- (如果)锂电池供电——
- 外部导线·······························移除
- 散热······································按需
- 防静电袋·······························按需
- 塑料泡沫·······························按需
=== 祝愿 ===
祝大家在以后的学习与工作中，以下都不会发生：
上电冒烟，电容爆炸，电阻发光，二极管击穿，三极管烧毁，运放自激，继电器不吸合，晶振不起振，线圈开路，烙铁头氧化，发热芯折断，芯片烫手指，镊子扎手掌，烙铁戳手腕，风枪撞大腿，锡膏挤不出，松香洗不净，线头虚接，引脚虚焊，焊盘脱落，BGA、QNF连锡，元件买到假货，器件买完降价，仿真软件卡死，layout 完成没保存，编译器满屏 Error，程序跑飞，MCU不定时死机，USB不隔离炸电脑，静电打坏开发版…… etc. 红红火火，噼里啪啦。