1. SINGLE PRINTED CIRCUIT BOARD (Small, medium and large size in PCB)

SMT is a technology to mount various mounting parts on printed circuit board (PCB)

Air cleaned Bare PCB is processed to (Pb free) soldering in screen printer and sequentially surface-mounted
     with more than 600 ~2,000 parts by Auto Teaching Instruction of MOUNTER.
     And then, the PCB goes to next process of REFLOW and AOI in sequence.

2. DOUBLE SURFACE PRINTED CIRCUIT BOARD (Small, medium and large size in PCB)

PCB(Top surface) SMT production means that Bare PCB is soldered and mounted with more than 600~2,000 patrs
     and the electrical bonding between PCB's surfarce and the mounted components is made during REFLOW process.

PCB(Bottom) SMT production means that the(Top) PCB having a SMT(I) process is soldered and mounted again
     after upside down.

1. DFT(Digital Function Test)

Digital Function Test (DFT) performs the performance test on TV and monitor PCB/PCBA

PCB/PCBA for TV and monitor is tested for electrical conduction, video, voice, color and other functions
    in accordance with customer specification

2. SMT INSPECTION

PCB/PCB produced by SMT will go through inspection process as below.

3. INSPECTION TECHNIQUE FOR PCB WITH FALSE ALARM

False alarm and tilt type visual inspection

False alarm from 2D AOI (Automatic optical tester) is mostly test error of AOI device and 100% of these PCB with     false alarm also go through precision inspection ( by Tilting type 3D monitoring inspection).

Inspection Process

The PCBs rated as false alarm from 2D AOI go to be mounted on NG BUFFER sequentially.

PCBs automatically pulled out from NG BUFFER is monitored after tilting toward Z-axis and taken visual images.

Perform monitoring inspection on 3D visual images of upper, side and lower side of PCB by inspector.

PCBs passed the 3D precision test are forwarded to In-line and those which failed to pass will be remounted on
     NG BUFFER as sequence.

Defect location of PCB is automatically marked (Defect Location Numbering) to the PCB
     which is finally failed in quality.

4. DOUBLE SURFACE AOI INSPECTION

Double surface inspection device for PCB

Inspect double surfaces of PCB/PCBA at the same time

Suitable for test after the final SMT process

Optimized for PCB/PCBA by high resolution and high speed scanning technology

Provides objectivity and reliability in the mounted surface of PCB

Line Scan Camera

Image capture device consists of camera and optical part which converts an optical axis to horizontal axis.

Line scan camera scans each line of PCB interoperating with encoder of Servo- motor.

Coaxial Box Lights

Coaxial Box Lights is that optical axis from lighting device is located in same axis with the reflected
     light coming into camera

Lights consist of various lighting systems in order to perform inspection on false alarm or bird caging.