2M Technology 2MTHWT-HMD Podręcznik użytkownika - Strona 16
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Walkthrough Metal Detector with Single Wrist Thermal Sensor 2MTHWT-HMD
2. If the alarm failure still exists though the oscillation signal is normal, the DC power values of the motherboard shall be
checked for being +8V, -8V and +12V respectively with a multimeter.
3. If the DC power values of the motherboard are +8V, -8V and +12V, the reference voltage shall be checked for being
3.6V with a multimeter.
4. If the reference voltage is 3.6V, the 3rd-pin DC voltage of Q21 and Q25 of the motherboard shall be checked for being
close to -8V and OV respectively with a multimeter.
V. Wiring diagram of circuit board:
Mother Board + Switch power supply + Zone LED PCB + Keyboard PCB + Speaker
STANDARD COMPLIANCE
This product meets the Technical Code for GB15210-2003 Walk-through Metal Detector (WTMD).
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