Pioneer PDP-507XD Service Manual page 127

5
SUS-B ADJUSTMENT
50X MAIN DRIVE Assy
from
DIGITAL Assy
IC1001_A2
XSUS-U
Pin
3
from
DIGITAL Assy
IC1001_A1
XSUS-B
Pin
2
50Y MAIN DRIVE Assy
from
DIGITAL Assy
IC2003_A4
YSUS-U
Pin
5
from
DIGITAL Assy
IC2003_A4
YSUS-B
Pin
4
SUS-D ADJUSTMENT
50Y MAIN DRIVE Assy
1 Measure the SUS-D pulse width (Tsus-D).
from
DIGITAL Assy
IC2002_A7
YSUS-D
Pin
8
5
6
1 Measure the SUS-U input delay time (∆ Tsus-u).
IC1101
IC1102
Photo
Coupler
2 Adjust the SUS-B input delay time so that it becomes "∆ Tsus-u + α ± 5 nsec."
VR1001
IC1205
Photo
Coupler
1 Measure the SUS-U input delay time (∆ Tsus-u).
IC2101
IC2102
Photo
Coupler
2 Adjust the SUS-B input delay time so that it becomes "∆ Tsus-u + α ± 5 nsec."
VR2001
IC2209
Photo
Coupler
VR2002
PDP-507XD
6
7
Q1102
Q1213
IC1204
Q1209
Q2103
Q2221
IC2208
Q2215
2 Adjust the pulse width of the SUS-D input signal for
the DK module so that it becomes "Tsus-D ± 5 nsec."
IC2104
Q2106
7
8
TP1106
IC1104
Pin 2
X DK
Module
TP1260
Q1210
FET
Q1211
FET
TP2105
IC2107
Pin 2
Y DK
Module
TP2276
Q2210
FET
Q2216
FET
TP2107
IC2107
Y DK
Module
127
8
A
B
C
D
E
F