Electronic System
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Pin 7: GND
J17---To Program Switch for Software Update
Pin 1: DC +5V (0V). +5V: instrument is working on “Test
Mode”, or it working on “Program Mode”.
Pin 2: GND
J18---To Contrast Adjustor
Pin 1: DC -20.5V
Pin 2: DC +5V- -20.5V, contrast adjust
Pin 3: DC +5V
CN1---To Drive PCB
Pin 1-4: Control slit step motor
Pin 5: Slit Photo-coupler signal
Pin 6: Wavelength Photo-coupler and limit switch signal
Pin 7: Filter Photo-coupler signal
Pin 8: Lamp limit switch signal
Pin 9,11,13,15: GND
Pin 10,12,14,16: DC +12V
CN2---To Drive PCB
Pin 1: GND
Pin 2: DC +5V
Pin 3-6: Control wavelength step motor
Pin 7-10: Control filter step motor
Pin 11-14: Control lamp Change step motor
5.2.2 Drive PCB(SST8.414.103 or SST8.414.104)
The layout of the Drive PCB is shown in figure 5.14, 5.15 and 5.16
Figure 5.14 Layout of UV-2800 Drive PCB