Pioneer PX-7 Service Manual page 110

PX-7
a:
RGB OUTPUT
(R
OUTPUT)
5V/div
(when
RGB
pack inserted)
b:
TP-6
(VR104 comparator
reference voltage)
500mV/div
c:
TP-4
500mV/div
Photo. 13-8 16
color bar
RGB
generator
circuit
waveforms
a:
RGB OUTPUT
(B
OUTPUT)
5V/div (When
RGB
pack
inserted)
b:
TP-6 (VR104
comparator reference voltage)
500mV/div
c:
TP-5
500mV/div
Photo. 13-9
a:
TP-1 (DC
shift
B-Y
signal)
500mV/div
b:
TP-3
(VR103
comparator
reference voltage)
500mV/div
c:
IC104 PIN
7
(OVLYF
signal)
5V/div
Photo
13-11
OVLYF
in
computer mode
Picture synthesis
flag interval
a:
TP-1
(DC
shift
B-Y
signal)
500mV/div
b:
TP-3
(VR103 comparator reference voltage)
500mV/div
c:
1C
1
04
PIN
7
(OVLYF
signal)
5V/div
Photo. 13-12
OVLYF
in
picture synthesis
mode
a:
RGB OUTPUT
(G
OUTPUT)
5V/div
(When
RGB
pack
inserted)
b:
TP-3
(VR103
comparator reference
voltage)
500mV/div
c:
TP-2
500mV/div
Photo. 13-10
1
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