Pioneer PDP-5010FD, Руководство по обслуживанию

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PDP-5010FD
142
1 2 3 4
1 2 3 4
C
D
F
A
B
E
DELAY ADJUSTMENT OF THE CONTROL SIGNAL (SUS-D)
1
Measure the pulse width of the SUS-D signal.
2
Check the pulse width of the SUS-D input signal (gate terminal of Q2111).
Adjust the variable control so that the pulse width of the SUS-D input signal (gate terminal of Q2111) becomes the
same pulse width
±
5 nsec as the SUS-D signal.
Note: • Be sure to set the Drive to OFF for adjustment.
• For details on measuring points of waveform, see the figure below.
50 % of the crest value 50 % of the crest value
50 % of the crest value 50 % of the crest value
SUS-D pulse width: Tsus - Dg
Adjust so that "Tsus - Dg = Tsus - D
±
5 nsec," using the variable
control shown in the table below:
SUS-D signal
(input to the DRIVE Assy)
SUS-D signal
(input to the gate terminal of Q2111)
SUS-D pulse width
Tsus - D
SUS-D pulse width
Tsus - Dg
Assy VR
Y DRIVE Assy VR2001