SECTION 3 ELECTRONICS
3.1 PCB Locations............................................................................................................................................3-1
3.2 Block Diagram and Power Source..............................................................................................................3-2
3.3 PCB No. 2132 (PD; Photo Diode, Pre-Amplifier, LED Relay) ....................................................................3-6
PCB No. 2156 (PD2; Photo Diode, Pre-Amplifier, LED Relay) ..................................................................3-6
3.4 PCB No. 2133 (THERMO; Thermister) ......................................................................................................3-8
3.5 PCB No. 2134 (Y-Z RELAY; Liquid Surface Sensor, Probe Crash,
Y-Axis Home Position Sensor, Z-Axis Relay).............................................................................................3-8
PCB No. 2157 (Y-Z RELAY2; Liquid Surface Sensor, Probe Crash,
Y-Axis Home Position Sensor, Z-Axis Relay).............................................................................................3-8
3.6 PCB No. 4086 (PS; Power Source, Motor Driver) ....................................................................................3-11
3.7 PCB No. 6350 (PRCN-1; Printer Control Board) ......................................................................................3-15
PCB No. 6375 (PRCN-3; Printer Control Board) ......................................................................................3-15
3.8 PCB No. 6362 (MAIN; CPU, I/O, Motor Control, Temperature Control, A/D)...........................................3-16
PCB No. 6373 (MAIN-2; CPU, I/O, Motor Control, Temperature Control, A/D) .......................................3-16
3.9 PCB No. 7015 (MEMORY; Program Memory) .........................................................................................3-23
3.10 PCB No. 9258 (LED2; LED for scattered light).........................................................................................3-23
8
3.11 PCB No. 9259 (LED1; LED for transmitted light)......................................................................................3-24
3.12 PCB No. 9260 (X RELAY; X-Axis Relay)..................................................................................................3-24
3.13 PCB No. 9263 (VR; LCD Contrast Volume) .............................................................................................3-25
3.14 PCB No. 9264 (Z RELAY; Z-Axis Relay, Z-Axis Home Position Sensor).................................................3-25
3.15 PCB No. 9265 (PR RELAY; Operation Panel, Syringe Motor, SV 1 Relay) .............................................3-26
PCB No. 9303 (PR RELAY2; Operation Panel, Syringe Motor, SV 1 Relay) ...........................................3-26
CA-500 Series S/M Revised December 2001
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