Figure 6.7.11 Track Following Timer Adjustment - Fujitsu M2361A Customer Engineering Manual

f. Offset Adjustment of Desired Velocity Curve (RV6)
CD
Connect the test points
WIR
and W19 to a digital voltmeter.
CD
Adjust the potentiometer R6 so that IVW18 - VW191 is O.SmV,
VW18 and VW19 are Voltages of w18 and w19 respectively.
g. Track Following Timer Adjustment (RVll)
CD
Turn power off.
CD
Connect CN04 which is the output cable of the power amplifier to
the coil of rotary actuator.
(~
Turn power on.
QD
Turn on the start switch on the operator panel and wait for one
minute. If the ready lamp does not light after one minute,
adjust coarsely the potentiometer RV3 toggling the MRZ switch on
the CE panel so as to get READY.
CD
Connect the CNB-Il to an oscilloscope and trigger with
negative-going edge of this signal.
GD
Toggle the MRZ switch repeatedly and adjust the potentiometer
RVl1 so that TTFis 2.Sms±O.lms as shown in Figure 6.7.11.
T TF
=
2.5 ms to.l ms
Figure 6.7.11 Track Following Timer Adjustment
h. DAC Output Adjustment (RVI0)
CD
Connect the test point W18 to an oscilloscope.
CD
Execute the diagnostic routine mode 02, which issues repetitive
seek command between cyl.384 and cyl.640, and adjust the
potentiometer RVI0 so that V
DA
is 6.0V±0.IV as shown in Figure
6.7.12.
B03P-482S-0002A .•. 02
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