Unico SQ Series, Service Manual

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Electronic System
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Pin 3, 4, 5: DC +12V
Pin 8, 9, 10: GND
J2---To (Main) Amplifier PCB
Pin 1: DC +9V
Pin 2: GND
Pin 3: DC -9V
J3---To Transferring PCB(In Upper Case)
Pin (1, 3): AC 1200V
J4---To Main CPU PCB
Pin 1, 2: DC +12V
Pin 3, 4: GND
Pin 5, 6: DC +5V
J5---To Slave Amplifier PCB
Pin 1: DC +9V
Pin 2: GND
Pin 3: DC -9V
5.2 Control and Drive System
The working principle as follow (shown in figure 5.10, 5.11 and 5.12):
1. User setup the “Test Parameters” by operating the Keypad. The main
CPU (on “Main CPU PCB”) command the motor to goto the setup
wavelength, select the correct light source and filter;
2. Halogen or deuterium lamp to supply the light, the Monochromator to
isolate the wavelength of interest and eliminate the unwanted second
order radiation, the sample compartment to accommodate the sample
solution;
3. The detector to receive the transmitted light and convert it to an
electrical signal, the slave CPU (on “Slave CPU PCB”) control to
amplifier the electrical signal and convert it to be digital signal, send it to
main CPU;
4. The main CPU gets the digital signal, process and outputs the results
(display, print or send to PC, and so on).