Service manual
46
3.3 Needle Board (CIIM00008)
This board conditions the thermistor signal associated with the thermostatation of the needle, the preamplification of the
level detection signal and the Z home. It receives, from the needle-fan unit associated with thermostatation, the Peltier
cell, the thermistor and the level signal detected by the needle itself.
Two sets of cables leave this needle and join this board with the CIIM00006-01 board (specifically with the J29 and J27
connectors) for its J1 and J2 connectors.
TP1 - Needle signal
TP2 - Output preamplifier needle signal
TP3 - Output amplifier thermistor signal
TP4 - Thermistor
12V - 12V voltage
5V - 5V voltage
AGND - GND
Connector Function Pins
J1 CPU board connection (CIIM00006) 1 - Fan control
2 - Home Z
3 - Thermistor
4 - Sensor level
5 - GND
6 - 12V
J2 CPU board connection (CIIM00006) for the Peltier 1 - Peltier
2 - Peltier
3 - Chassis
J3 Thermistor 1 - GND
2 - Thermistor
J4 Peltier 1 - Peltier, red
2 - Peltier, black
J5 Fan 1 - Fan control
2 - 12V
J6 Needle connection for level detection 1 - needle
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