|Ukuran (L x W x H cm)||10 x 10 x 10|
|Tipe garansi||No Warranty|
|Watch Strap Color||Orange|
* colorful lighting
* life waterproof
* stopwatch function
* alarm function
This size: length * width * dial strap watch thickness: 21*3.7*1.4CM
Net weight of about 30 grams
Working principle of electronic watch:
Power supply - crystal oscillation frequency of 32768HZ - - - - - - - - - - - - - - - - - - - - - output
Non directional device (passive device):
Resistance: unit: Ohm
Inductance: unit: Frederick
Directional device (active device): electrolytic capacitor, diode, transistor, buzzer
Movement structure: power (battery), PCB, components, plastic cover, metal,
Test requirements: detection of environment, equipment, method.
Precision, operating current, static current, function. (service life)
Production process: PCB---COB--- solder - Test -----EL chip ----LCD---- into the cover - up board (on the hardware) ---- test ---- the battery - function test - stickers.
Common trouble shooting:
Whiteboard: 1, the first battery has electricity, no electricity, the replacement of the battery; there is electricity, the movement of the AC point can be. 2, the battery has electricity, short circuit is not good, repair PCB.
Hyphenation (ischemic stroke): 1, may be loose screws, tighten screws; 2, barge horse on dirt, reinstall the removal of dirt can be; 3, LCD or PCB bad, replace the above components.
According to the word light flash or wordless: 1, the battery power, battery replacement; 2, the battery voltage is normal, according to the word light flash is lighting interference, the interference of capacitance is increased;