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<7. MAINTENANCE>
7-4
IM 12E04A02-02E
5. Replace the lamp. In doing this, con
fi
rm that the boss of the new lamp is placed in the
position shown in Figure 7.2.
Cover
Four C screws
Clamp
Two B screws
Lamp holder
Lamp boss
Side view of detector
Front view of detector
Terminals P1 and P2
Terminal AG
Terminal S1
P1 P2
F0703.ai
Figure 7.2 Lamp replacement
6. Temporarily set the clamp lightly in place for later adjustment.
7. Using a cotton swab soaked in alcohol or relevant cleaning solution, clean the backside of
the lens in the detector.
8. Tighten terminals P1 and P2 to the terminal board and also the two B screws.
9. Turn on the power. Wait about 5 minutes or more until the brightness of the lamp has
stabilized.
10. Carry out lamp control reference value calibration.
Select FUNCTION "C" in the <MAINT.> mode.
11. Press the [ENT] key and the reference signal voltage is displayed and the lamp voltage is
fi
xed at about 3.6 V.
12. Set the calibration plate to the detector.
13. Connect a tester or relevant device between terminals S1 (-) and AG (+) to measure DC
voltage. While checking the voltage, slowly move the lamp up and down to determine the
position where the maximum absolute value of the measured voltage occurs. Depending
on the lot of the calibration plate, the maximum occurs generally in a range of 30 to 100 mV.
The higher the value of the calibration plate, the greater the output. At the optimum position
(a slight displacement does not matter), tighten the clamp to 0.7 N
·
m torque. This can be
done by fully tightening with a
fl
at head screwdriver. Make sure that the torque is suf
fi
cient,
otherwise the lamp may move when the detector is opened/closed.
3rd Edition : May. 31, 2010-00
Содержание TB400G-A1 Series
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