Pioneer XR-VS500D Service Manual page 74

5
WAVEFORMS for DVD MAIN ASSY
Note : The encircled numbers denote measuring point in the schematic diagram.
Measurement condition : No. 1 to 4 and 6 to 11 : Disc MA1, Title 1-chp 1
No. 5
No. 12 to 14
No. 15 to 17
Foot of R169 (RF)
1
V: 100mV/div. H: 0.2µsec/div.
GND
CN7 - pin 5, 6 (RFO)
2
V: 500mV/div. H: 0.1µsec/div.
GND
IC12 - pin 170 (MY CHIP input)
3
V: 1V/div. H: 0.2µsec/div.
GND
CN7 - pin 9, 10 (Tracking Error)
4
(AI-Inner Tracking Off)
V: 500mV/div. H: 2msec/div.
IC2 - pin 39 (EFM before slice)
5
V: 1V/div. H: 1µsec/div.
GND
IC2 - pin 1 (EFM)
6
V: 1V/div. H: 0.2µsec/div.
GND
5
6
: CD, ABEX-784 Track 1
: MJK1, Title 1-chp 4
: MJK1, Title 1-chp 5
Q281 - Collector (FG)
7
V: 1V/div. H: 5msec/div.
GND
Foot of R261 (FPWM)
8
V: 1V/div. H: 5msec/div.
GND
Foot of R262 (VPWM)
9
V: 1V/div. H: 5msec/div.
GND
Foot of R263 (PPWM)
10
V: 1V/div. H: 5msec/div.
GND
Foot of R264 (RPWM)
11
V: 1V/div. H: 5msec/div.
GND
IC18 - pin 45
12
(Composite Video output)
V: 2V/div. H: 1msec/div.
GND
6
7
IC18 - pin 39 (Y output)
13
V: 0.2V/div. H: 5msec/div.
GND
IC18 - pin 36 (C output)
14
V: 0.2V/div. H: 5msec/div.
GND
IC18 - pin 45 (C output when
15 B
selecting color difference output)
V: 0.2V/div. H: 5msec/div.
GND
IC18 - pin 39 (Y output when
16
selecting color difference output)
V: 0.2V/div. H: 5msec/div.
GND
IC18 - pin 36 (C output when
17 R
selecting color difference output)
V: 2V/div. H: 5msec/div.
7
8
XR-A9800D
A
B
C
D
21
8