Pioneer PDP-6070PU, Service Manual

Page: 132 / 224

PDP-6071PU
132
1 2 3 4
1 2 3 4
C
D
F
A
B
E
1
Measure the delay time for the SUS-U signal.
2
Check the delay time for the SUS-B signal.
Adjust the variable control so that the SUS-B delay time becomes "SUS-U delay time +
α ±
5 nsec."
Note: For details on measuring points of waveform, see the figure below.
1.5 V
1.5 V
5 V
SUS-B delay time:
∆
Tsus-b
Adjust so that "
∆
Tsus-b =
∆
Tsus-u +
α ±
5 nsec," using the variable
controls shown in the table below:
SUS-U signal (input to the DRIVE Assy)
Value of
α
SUS-U signal (input to the DK module)
SUS-B signal (input to the DRIVE Assy)
SUS-B signal (input to the MSK module)
5 V
SUS-U delay time
∆
Tsus-u
SUS-B delay time
∆
Tsus-b
Assy VR Time
X DRIVE VR1002 70 nsec
Y DRIVE VR2010 85 nsec
DELAY ADJUSTMENT OF THE CONTROL SIGNAL (SUS-B)
1
Measure the delay time for the SUS-D signal.
2
Check the delay time for the SUS-G signal.
Adjust the variable control so that the SUS-G delay time becomes "SUS-D delay time +
β ±
5 nsec."
Note: For details on measuring points of waveform, see the figure below.
1.5 V
1.5 V
5 V
SUS-G delay time:
∆
Tsus-g
Adjust so that "
∆
Tsus-g =
∆
Tsus-d +
β ±
5 nsec," using the variable
controls shown in the table below:
SUS-D signal (input to the DRIVE Assy)
Value of
β
SUS-D signal (input to the DK module)
SUS-G signal (input to the DRIVE Assy)
SUS-G signal (input to the MSK module)
5 V
SUS-D delay time
∆
Tsus-d
SUS-G delay time
∆
Tsus-g
Assy VR Time
X DRIVE VR1001 120 nsec
Y DRIVE VR2011 100 nsec
DELAY ADJUSTMENT OF THE CONTROL SIGNAL (SUS-G)