Tsarin PCB da tsarin samarwa yana da kusan matakai 20,talaka tina kan allon kewayawa na iya haifar da irin su sandhole na layi, rugujewar waya, hakoran kare layi, bude kewaye, layin rami na yashi; Pore ​​jan karfe bakin ciki mai tsanani rami ba tare da jan karfe; Idan bakin bakin ramin jan karfe yana da tsanani, ramin jan karfe ba tare da jan karfe ba; Detin ba shi da tsabta (lokacin dawowar tin zai shafi suturar detin ba ta da tsabta) da sauran matsalolin inganci, don haka haɗuwa da tin mara kyau yana nufin cewa buƙatar sake waldawa ko ma ɓata aikin da ya gabata, yana buƙatar sake gyarawa. Saboda haka, a cikin PCB masana'antu, yana da matukar muhimmanci a gane musabbabin matalauta tin

Bayyanar matalauta tin gabaɗaya yana da alaƙa da tsabtar PCB fanko allo. Idan babu gurbatar yanayi, ba za a sami dala mara kyau ba. Na biyu, mai siyar da kanta ba shi da kyau, zazzabi da sauransu. Sannan allon da'ira da aka buga ya fi nunawa a cikin abubuwa masu zuwa:

1. Akwai ƙazantattun ƙwayoyin cuta a cikin murfin farantin, ko kuma akwai ɓangarorin niƙa da aka bari a saman layin yayin aikin masana'anta na substrate.

2. Alla mai maiko, ƙazanta da sauran abubuwa, ko kuma akwai ragowar mai na silicone.

3. Tsarin farantin yana da takardar lantarki a kan tin, murfin farantin yana da ƙazantattun ƙwayoyin cuta.

4. High m shafi ne m, akwai farantin kona sabon abu, farantin surface takardar ba zai iya zama a kan tin..

5. The tin surface hadawan abu da iskar shaka da jan karfe surface dullness na substrate ko sassa ne tsanani.

6. Ɗayan gefen murfin ya cika, ɗayan ɓangaren ɓangaren yana da kyau, ƙananan ramukan ramuka yana da alamar haske mai haske.

7. Low m ramukan da bayyananne haske baki sabon abu, high m shafi m, akwai farantin kona sabon abu.

8. Tsarin walda ba ya tabbatar da isasshen zafin jiki ko lokaci, ko daidai amfani da ruwa

9. Low m babban yanki ba za a iya tinned, da jirgin saman yana da kadan duhu ja ko ja, daya gefen shafi ne cikakke, daya gefen shafi ne bad.