Shimadzu GCMS-QP2010 Series, Service Manual, Page: 108 / 168

108
According to PWM of Duty in comparison to 0
〜
100%, 0 voltage,
〜
+24V comes out.
３．
Confirmation of a TC temperature measurement circuit
It is the voltage amplifier of 200 times.
CP1[TMP-DI]
：
Voltage
≒
0.008
×
(measurement temperature
℃
-23) it becomes. ( 0.8V at the time
of123
℃
)
When DI probe comes off and TC is not connected and, when TC be snapping ,it becomes
4.8V over.
The voltage of CP1 TMP-DI can be measured even with checkpoint CP11 [TMP DI] on a
MAIN CTRL-A foundation.
In the case that the CP11 voltage on the CP1 voltage and MAIN CTRL-A on DI CTRL-A do
not agree, The defectiveness of the buffer amplifier on defective or MAIN CTRL-A of
connection cable is conceivable.
４．
Confirmation of LED illumination
The control of the illumination of LED is not DI CTRL-A. The control of the illumination of
LED is conducted with MAIN CTRL-A.
In the case that LED is not lighted connection defective etc. of the cable between defective,
DI-MAIN of defective, probe of introduction cable are conceivable.
5
．
Confirmation of automatic recognition
The automatic recognition of DI option conducts it with the presence of the installation of the
connection connector with the introduction.
In the case that it is not recognized automatic the connection defectiveness of the cable
between defective, or DI-MAIN of introduction cable is conceivable.