As the technology is adopted by cell phone jammer

As the technology is adopted by cell phone jammer .
Motherboard XY direction ability to locate appropriate; motherboard the BOSS hole and former Shell BOSS gap, 0.1mm copper nut ultrasonic hot-melt or inserts the way embedded within the first shell BOSS motherboard with the boss gap in 0.07mm. Self tapping BOSS. Motherboard front patch avoid as much as possible before the shell BOSS column boss column hidden distribution: M (screw diameter) +0.8 (before shell BOSS wall thickness) * 2 + 0.6 (before shell BOSS strengthen the tendon width) * 2 +0.4 (ribs and Devices gap) * 2 = M (screw diameter) +3.6 mm range of round. The motherboard on the back of the patch to avoid shell BOSS Kong: screw head diameter of 0.15 (conch and after shell hole unilateral gap) * 2 + 0.8 (Backshell BOSS hole wall thickness). The technology is utilized to manufacture cell phone jammer .
2 +0.6 (after the shell BOSS Kong to strengthen the tendon width) * 2 +0.4 (to strengthen the tendons and Devices gap) * 2 = M (screw head diameter) +3.9 mm, range round. Motherboard the BOSS hole circle 1mm floor of copper, an ESD grounding screw. BB pieces of cloth, the minimum distance plate side of the device PAD 8mil (8 * 0.025 = 0.2mm). No copper on the PCB through-hole four weeks 0.2mm. The key board through-hole to achieve the key PAD to consider this point. (Prohibited in principle on key PAD on the hole, because the sound will affect when the button is pressed). PCB frame dimension tolerance: Edge to edge 0.127; hole location: 0.075; specific to the PCB manufacturer to confirm. Locked in a PCB antenna, buttons, SPK bracket screws.
Clamshell machine, A shell is longer tendons to suppress the SUB LCD surrounding the pcb clearance 0.05 ~ 0.1mm. Prevent the LCD, but also to prevent the small screen was crushed in the shell before and after a rocky ledge. The length of the tendon as long as possible to prevent the drop top bad the main LCD. If the LCD is to add shielding cover, then the shield cover and LCD gap is 0.1mm. Z direction gap is 0mm. Around the small screen of clamshell machine A shell reinforcement to withstand, otherwise they will be crushed. Candybar or PDA mobile phones, the LCM module, the edge away from the button above the appearance of lines 2.5MM (FPC beyond the LCD holder at least 1mm), so that the structure for LCD positioning boxes and buttons flanging take Territories.
Without individual tolerances in accordance with the icon tolerance class 7. With "*" size for QC control size. Underlay materials for PET, thickness 0.08mm; pad high level of material is of PET, thickness 0.08mm sound hole area appropriate; 10% to 20% spk area (generally open the 1MM diameter hole). First sound chamber sealed sound chamber of sufficient size; before the sound chamber to improve the sound frequencies in the high-frequency part of the effect, also decided that the bass response of the sound (resonance amplitude). The first sound chamber height of at least 0.4 ~ 1mm (foam compressed) high-frequency sound will be loud and released; If you want to achieve the effect of bass sound chamber height at least 1 ~ 2mm.