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産業機器 Dinghua DH-A1L-CのPDF マニュアルをオンラインで閲覧またはダウンロードできます。Dinghua DH-A1L-C 16 ページ。 Bga rework station

put out, withdraw the hot wind head.Finally, take away the PCB board from the heating zones.

(1) null welding：

Because of counterpoint by hand will cause deviation between chip and welding plate, surface

tension of tin ball will make BGA chip and welding plate in the process of automatic correction.

Once heating, BGA falls not evenly, which cause the chip drops not evenly.If stop reflowing at

this time, the chip will not fall normally,which will cause th phenomenon of empty welding and

false welding.So you need to extent time of third 、forth temperature zones or add the bottom

pre-heating temperature to make ,the tin balls meltdown and drop evenly.

(2) short circuit：

When the ball reached the melting point,it is in a liquid state , if too long or too high temperature

and pressure,it will destroy surface tension of solder balls and the supporting role, resulting in

short-circuit phenomenon when reflows,the chips fall entirely on the PCB pads the , so we need to

appropriately reduce the heating section of the third and fourth soldering temperature and time , or

reduce the bottom of the preheat temperature.

Note: In normal use rework station it will produce small quantities of bad smelly, in order to ensure

comfortable, safe and healthy operating environment, pls keep indoor and outdoor air flow.

六、Procedure setting and usage

Introduction of touch screen operation

1. Open the control power, the BGA rework station can connect with electricity.The home page of

touch screen will appear the interface like the following picture, and then you can choose the

language interface as required.

When we choose Chinese, it will appear the working interface like the following picture:

2、

、Input password, then click to enter LOAD.

Click the button of "current curve", enter "START" to operate the heating lines we

need.They are seperately target temperature, onstant temperature time,and the speed of

heating ( the speed of heating

Three-zone tempertures can be set 6 levels of variable and constant temperature controls.If

need,you can change the related parameters,but it‟s not saved,just can heat it with this line.

If saveing is necessary, please refer to relative information of ingredient setting！Ifthe temperature

curve doesn‟t meet to the needed welding temperature; please press the return button, returning to

the

main Interface.

3. Press"Curve Selection", it will show the fllowing interface after entering.

with ℃/SEC

calculation).