background image

中龙集团

Dragon Group China Limited 

                                                                                       

                             

                                     

BIRD

®

 

 

                                         
 

 

www.dragongroupchina.com

   

www.chinaemall.biz

 

 

2.Desoldering   

Put PCB on the positioning bracket, choose the appropriate hot-air reflow nozzle, set 

the right soldering temperature curve, and press the START button. After the procedure is 

over, move the hot-air nozzle away by hand, and use the vacuum suction pen to remove 

BGA.   

3.Clean the soldering pad.   

There are mainly 2 ways: one is use suction line to make it flat, the other is use the 

soldering iron to remove the dregs directly. It is better to remove the dregs soon after the 

desoldering  of  BGA,  for  the  BGA  has  not  cooled  down,  and  the  damage  caused  by 

temperature difference is less.To use some flux paste when cleaning the pad can increase 

the solder activity and achieve better cleaning effect. Be careful to not to destroy PCB pad! 

Try to use some volatile solvents.   

4.Reballing   

Lay  the  BGA  Flux  Paste  on  the  BGA  pad  evenly  with  a  brush.  Choose 

corresponding steel net, and plant the soldering ball on the BGA pad with a BGA Reball 

Kit.   

5.Soldering   

Put  the  BGA  on  the  bottom  heating  area  of  BGA  Rework  Station,  and  solder  the 

balls on the pad.   

6.Lay on Flux paste   

Lay the BGA Flux Paste on the BGA pad evenly with a brush, no more, no less.   

7.Mounting   

Mount the BGA on the right place of PCB. When we place in by hand, we can make 

use of the silk screen borders. We can touch the surface of the pad and the balls to know 

whether it is placed in the right area.   

8.Soldering   

Put PCB with new-mounted BGA on the positioning bracket, move the hot-air nozzle 

to  the  right  place,  choose  the  appropriate  hot-air  reflow  nozzle,  set  the  right  soldering 

temperature curve, and press the START button. After the procedure is over, turn on the 

cooling fan to cool down BGA for 30-40 seconds, and elevate the upper hot-air nozzle to 

be  8-10mm  away  from  the  surface  of  BGA.  Or  move  away  the  hot-air  nozzle  after  the 

START light is off, then remove PCB from the heating area.   

 

Summary of Contents for Bird AC-5K

Page 1: ...www chinaemall biz BGA Rework Station AC 5K Dragon Group China Limited Address Fuxin Building Office 12D No 318 Fuhua Road Shenzhen China 518000 Telephone 86 1 379 836 8284 86 755 83292149 Fax 86 755...

Page 2: ...upchina com www chinaemall biz Contents A BGA Rework Station B Installation C Safety Cautions D Introduction of Structure E Operation Steps F PLC Programmable logic Controller G Curve Program Controll...

Page 3: ...eatures of BGA a Types According to the encapsulation material BGA can be classified into the following types 1 PBGA Plastic BGA 2 CBGA Ceramic BGA 3 CCBGA Ceramic Column BGA 4 TBGA Tape BGA 5 CSP Chi...

Page 4: ...e design the assembly of PCB If many pieces of BGA gather on a small area of PCB it will cause the imbalance of PCB in the reflow oven If many big pieces of BGA gather on a certain area of PCB longer...

Page 5: ...d The ideal situation is no poor welding Poor welding may be caused by pollution or the uneven distribution of flux paste What s more warped PCB may also lead to poor welding Open circuit welding spot...

Page 6: ...tep can be omitted b Remove BGA If the BGA will not be reused and the PCB can endure high temperature we can use high temperature shorter heating period to remove it c Clean the pad Pad cleaning is ma...

Page 7: ...PBGA choose the higher reflux temperature For no clean solder paste its activity is lower than non no clean solder paste so the soldering temperature should not be too high and the soldering time shou...

Page 8: ...fire or explosion The PCB and other parts should be put on the PCB bracket 3 No vibration Handle it gently 4 Don t touch the heaters with your hands when it is working or you will get hurt 5 Don t use...

Page 9: ...u use the machine you must read the instructions attentively Note when the machine works it will produce some smell So ensure the comfortable healthy and safe operation environment please keep the air...

Page 10: ...orted high precision thermocouple to detect the top bottom temperature precisely 4 Top bottom heating can be controlled independently by the temperature graphs A cross flow fan cools rapidly to protec...

Page 11: ...y the BGA Flux Paste on the BGA pad evenly with a brush Choose corresponding steel net and plant the soldering ball on the BGA pad with a BGA Reball Kit 5 Soldering Put the BGA on the bottom heating a...

Page 12: ...Dragon Group China Limited BIRD www dragongroupchina com www chinaemall biz F PLC Programmable Logic Controller 1 Top bottom PLC a Panel introduction Model PC410 sectional type temperature controller...

Page 13: ...e meter the upper screen displays the basic model the lower shows the version of the software for the customized meter the customer should pay special attention to the software version to facilitate f...

Page 14: ...e meter is set to constant temperature controller the two display windows PTN and STEP PROFILE RUN these four lights were off OUT1 is used to indicate the working state of output 1 It is on when there...

Page 15: ...HAND switch is forbidden No parameter code Parameter name adjusting range If we set AUTO HAND switch parameter code for AH as Hand AUTO HAND can be switched without interference 3 Adjusting parameter...

Page 16: ...etting please set the differential time to OFF so that it is not changed when the meter is in the process of PID self setting In the system that doesn t allow output signals change frequently we shoul...

Page 17: ...e configuration code and meaning of function parameters Set the configuration password as 808 the parameter code Loc when the meter shows PV press button PAR and for 3 seconds to enter the menu of sof...

Page 18: ...Dragon Group China Limited BIRD www dragongroupchina com www chinaemall biz...

Page 19: ...Dragon Group China Limited BIRD www dragongroupchina com www chinaemall biz...

Page 20: ...he process of PID self setting the system can only set ProP ln and dEr The cooling parameter rEL C should be set by hand If the adjust method is set at positioning adjustment ProP is the difference of...

Page 21: ...g shift 6 SET process set Note DH48S showing time is the range of electrical continuing set by using the coding switch of panel b Explanation of the setting characters The following characters will sh...

Page 22: ...continuity of power is necessary We should minimize interference otherwise restart PID There may be some differences between two parameters of PID starting in the process of warming and starting on co...

Page 23: ...Controller 1 Parameter set of curve program a Pn0 saved curve program 0 4groups r1 the slope of Curve 1 End StEP 0 01 99 9 C min Set the slope at End When the curve program goes to this section it st...

Page 24: ...hen the meter stops it is used as a thermostatic controller We can set is at SP which will display in the lower screen When the meter finishes the curve control procedure it will go into the stop stat...

Page 25: ...f LC r1 L1 d1 r2 L2 d2 is valid only in this running and not saved Other parameters all can the modified and saved c When the meter stops LC r1 L1 d1 r2 L2 d2 and other parameters can be modified and...

Page 26: ...Dragon Group China Limited BIRD www dragongroupchina com www chinaemall biz...

Page 27: ...ad free tin paste The tin balls melt first and surround the tin paste so that the flux in the paste can t volatilize and form bubbles inside If there is via on the soldering pad there may be more bubb...

Page 28: ...burn the components Semi auto reflow retrieval system can save many temperature curves It is important to know the use of temperature curves An precise temperature is the key point in the production w...

Page 29: ...temperature curve Setting of temperature curve is the first and most important step of BGA rework Compared with reflow temperature curve the control of temperature in rework process is more strict be...

Page 30: ...tin absorption line to remove the residual tin In the rework process the pad is likely to be destroyed by the wrong operation of the technician thus the total process of BGA rework becomes a failure...

Page 31: ...Dragon Group China Limited BIRD www dragongroupchina com www chinaemall biz...

Page 32: ...m the positioning bracket 5 Before soldering BGA check the PCB pad and BGA balls one by one After soldering check the appearance one by one again If there is some problem stop assembling and check the...

Reviews: