Service manual
34
Analogical circuitry:
The waste and system liquid sensors function through U6, U5 and U4, which generate and detect the signal responsible
for detecting the waste and system liquid. These signals are sent and received through the uid interconnection board
(connected to the CPU board by J9). The rack level detection is carried out in a similar way through U7, U8 and U2.
The signal injected to the base of the bottles goes to the uid interconnection board through J9 and is collected after it
has been amplied by J10 (connection with the needle board). There is also a circuit for conditioning the signal of the
thermistor associated with the thermostatation of the rotor that is made up of the U1 and U2 circuits. The thermistor
is connected to the rotor interconnection board, which is connected to the CPU board.
TP1 - Waste pump control signal
TP2 - Electrovalve control signal
TP3 - Rotor thermistor signal
TP4 - RESET
TP5 - WATCHDOG
TP6 - LSO_BOT bottle detection signal
TP7 - Bottle signal
TP8 - Needle detection signal
TP9 - LSO needle detection signal
TP10 - Attenuated LSO needle detection signal
TP11 - IN1 Needle Peltier Driver
TP12 - Needle resistance driver
TP19 - ASL
TP20 - HWR_L
TP21 - LWR_L
TP22 - WE_L
TP24 - CS_FPGA_L
TP25 - DVALID (photometry)
TP26 - 12 Volts analogical
TP27 - IN2 Needle Peltier Driver
TP28 - EF Needle Peltier Driver
TP30 - DOUT (photometry)
TP33 - RANGE (photometry)
TP34 - CLKAD (photometry)
TP35 - Conditioned thermistor signal
TP38 - DXMIT (photometry)
TP39 - Analogical GND
TP40 - Power GND
TP41 - Power GND
TP42 - Power GND
TP43 - Digital GND
TP44 - Digital GND
TP45 - Digital GND
LIST OF LED DIODES
DL1 - Electrovalve driver
DL2 - Waste pump driver
DL3 - PELTIER heating
DL8 - PELTIER cooling
DL4 - Needle resistance driver
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