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Team Tekno World ke free mobile repairing course mein aapka swagat hai! Main hoon Rakesh Chauhan, aur yeh humara Lesson 12 hai.
Pichle lesson mein humne Soldering Iron ka use seekha tha. Lekin mobile repairing mein sirf iron se kaam nahi chalta. Agar aapko SMD Rework Station kaise use kare, yeh nahi pata, toh aap Charging Jack, Mike (Mic), aur ICs (CPU/Power) kabhi nahi badal payenge.
SMD Rework Station (jise hum Blower ya Hot Air Gun bhi kehte hain) mobile repairing ka “Heavy Artillery” hai. Is machine ko chalana aasaan hai, lekin “Sahi Setting” (Heat & Air) pata hona sabse zaroori hai. Galat setting se aap poora board jala (burn) sakte hain.
Aaj hum seekhenge: Sahi Temperature, Air Flow aur Hand Skill.
1. SMD Rework Station Kya Hai? & SMD Rework Station Kaise Use Kare
Yeh ek machine hai jo Garam Hawa (Hot Air) fenkti hai. Isse hum solder ko pighla kar component ko nikaalte ya lagate hain.
Best Machine: Jaisa humne Lesson 7 mein dekha, Quick 857DW+ market ki sabse best machine hai.
Ismein 2 main controls hote hain:
- Temperature (Heat): Hawa kitni garam honi chahiye.
- Air (Wind): Hawa ka bahaav (speed) kitna hona chahiye.
2. SMD Rework Station Kaise Use Kare – Sahi Settings (The Secret Formula)
Har kaam ke liye alag setting hoti hai. Naye log yahi galti karte hain. Yeh chart yaad kar lein:
| Kaam (Work) | Temperature (Heat) | Air (Speed) |
| Plastic Parts (Mic, Sim Tray, Battery Connector) | 250°C – 300°C | 3 – 4 |
| Normal Components (Capacitor, Resistor, Coil) | 300°C – 350°C | 3 – 4 |
| Charging Jack / Connectors (Metal + Plastic) | 350°C | 4 – 5 |
| ICs (Power, CPU, eMMC) (Lead-Free Solder) | 350°C – 380°C | 3 – 5 |
| Desoldering (Safai) | 300°C | 4 – 5 |
⚠️ Tip: Yeh settings Quick 857DW+ ke hisaab se hain. Aapki machine ke hisaab se 10-20 degree upar-neeche ho sakta hai.
3. SMD Rework Station Kaise Use Kare- Sahi Tareeka (Hand Skill)
Sirf machine chalana kaafi nahi hai, aapka haath kaise chalta hai, wo maayne rakhta hai.
- Gol-Gol Ghumayein (Circular Motion):
- Kabhi bhi gun ko ek jagah (one spot) par roka kar mat rakhein. Isse board jal jayega aur phool jayega.
- Gun ko hamesha component ke upar dheere-dheere gol-gol ghumate rahein taaki garmi chaaron taraf barabar faile.
- 90 Degree Angle:
- Nozzle ko hamesha board ke bilkul upar (seedha) rakhein. Tedha rakhne se hawa aas-paas ke chhote parts ko uda degi.
- Nozzle Ka Chunaav:
- Chhoti IC/Parts: Chhoti Nozzle lagayein.
- Badi IC/Jack: Badi (Moti) Nozzle lagayein.
4. Component Nikaalne Ka Process (Step-by-Step)
Maan lijiye hamein ek Charging Jack nikaalna hai:
- Protect: Paas mein lage Mic ya Plastic parts par Silver/Golden Tape lagayein taaki wo jale nahi.
- Flux: Jack ki pins par achha Flux Paste lagayein.
- Heat: SMD ko 350°C / 4 Air par set karein. Jack ko gol-gol heat dein.
- Check: Beech-beech mein Tweezer se hila kar dekhein. Jab solder pighal jaye (shiny ho jaye), tab jack ko seedha upar utha lein.
- Cool Down: Nikaalne ke baad board ko thanda hone dein.
5. Sabse Zaroori: Machine Ko Band Kaise Karein?
Yeh galti aapki machine kharab kar sakti hai.
- Galat: Kaam khatam hote hi Main Switch band kar dena.
- Sahi: Handle ko Stand par rakhein. Achhi machines (Auto-Cut) mein handle rakhte hi “Heater” band ho jaata hai aur sirf “Thandi Hawa” chalti hai jab tak temperature 100°C se neeche na aa jaye.
- Jab display “—“ ya “OFF” dikhaye, tabhi main switch band karein. Isse heater element ki life badhti hai.
Conclusion (निष्कर्ष)
SMD Rework Station mobile repairing ka engine hai. Shuruaat mein scrap board par practice karein taaki aap heat ko control karna seekh sakein.
💡 Aaj Ka Aapka Task – Lesson 12 (Comments & Forum)
- Practical (Scrap Board Par):
- Apne purane board se koi bhi Plastic Connector nikaalne ki koshish karein bina usey jalaye. (Yahi asli test hai!).
- Fir ek badi IC nikaalne ki koshish karein.
- Comment (नीचे): Aapne plastic connector nikaala toh kya wo pighla ya bach gaya? Sach batayein!
- Forum: Apni machine ki settings ki photo Forum (forum.teamtw.in) par share karein aur poochein ki kya yeh sahi hai.
Agla Lesson: Tools seekh liye! Ab hum apne pehle “Practical Diagnosis” ki taraf badhenge. Agla lesson hai: “Lesson 13: DC Power Supply Ka Use (Dead phone check karna aur Shorting pakadna)”।
