18
3.3.
Preamp Board ASSY (B1)
ASSY P/N
321-71085 (Detector ASSY 321-71279)
Board P/N
321-710
8
7
Circuits Mounted
Displacement sensor signal amplification
Standard power mounting
Magnet temperature sensor signal amplification
Check Voltage
CP 1
Displacement sensor signal output
Allowable range of output voltage : +1.5v to +2V, -1.5v to -2V
CP 2
Standard power voltage (about +5 V)
CP 3
Signal GND (0 V)
J1 (1)
= CP1
J1 (2)
= CP2
J1 (3)
Power (about +12 V)
J1 (4)
Power GND (0 V)
J1 (5)
Power GND (0 V)
J1 (6)
Power (about -12 V)
J1 (7)
Temperature sensor signal output (about 2 to 3.2 V) (in environment of 5 to
35
C)
3.4.
Power Board ASSY (B4)
ASSY P/N
321-71075
Board P/N
321-71077
Circuits Mounted
Generates ±12 V, d5 V from AC adaptor input voltage (DC12 V/1 A)
I/F communication circuit
Check Voltage
J3 (1)
TXD signal
J3 (2)
DSR signal
J3 (3)
DTR signal
J3 (4)
RXD signal
J3 (5)
Main power (AC adaptor, with external battery) check voltage (about
+3.7 V)
J3 (6)
Power (about +12 V)
J3 (7)
Power GND (0 V)
J3 (8)
Power GND (0 V)
J3 (9)
Power (about -12 V)
J3 (10) Power (about +5 V)
J3 (11) Main power (about 11.5 V with AC adaptor)
