Waveforms - Pioneer DV-79AVi Service Manual

1

3.13 WAVEFORMS

Note : The encircled numbers denote measuring point in the schematic diagram.
A
A
DVDM ASSY
Measurement condition : No. 1 to 4 and 6 to 11 : MJK1, Title 1-chp 1
No. 5
IC101-pin 3 (RF)
1
V: 200mV/div. H: 0.1µsec/div.
B
Q106-emitter (RFO)
2
V: 500mV/div. H: 0.1µsec/div.
3
C
IC101-pin 42 (Tracking Error)
4
(AI-Inner Tracking Off)
V: 500mV/div. H: 2msec/div.
D
IC201 - pin 39 (EFM before slice)
5
V: 0.5V/div. H: 0.2µsec/div.
E
IC201 - pin 1 (EFM)
6
V: 1V/div. H: 0.2µsec/div.
F
40
1
2
: CD, ABEX-784 Track 1
IC251 - pin 24 (FG)
7
V: 1V/div. H: 5msec/div.
AC mode
GND
Foot of R261 (FPWM)
8
V: 1V/div. H: 10µsec/div.
AC mode
GND
Foot of R262 (VPWM)
9
V: 1V/div. H: 10µsec/div.
Foot of R263 (PPWM)
10
V: 1V/div. H: 0.2msec/div.
AC mode
GND
Foot of R264 (RPWM)
11
V: 1V/div. H: 5msec/div.
GND
Foot of R968 (V)
12
V: 0.2V/div. H: 10µsec/div.
GND
2
3
No. 12 to 14 : DVD-REF-A1, T2-Chap.1
No. 15 to 20 : DVD-REF-A1, T2-Chap.19
Foot of R959 (S_C)
13
V: 0.2V/div. H: 10µsec/div.
GND
Foot of R963 (S_Y)
14
V: 0.2V/div. H: 10µsec/div.
GND
Foot of R960 (Y/G) [interlace]
15
V: 0.2V/div. H: 10µsec/div.
GND
Foot of R958 (Cb/B) [interlace]
16
V: 0.2V/div. H: 10µsec/div.
GND
Foot of R957 (Cr/R) [interlace]
17
V: 0.2V/div. H: 10µsec/div.
GND
Foot of R960 (Y/G) [progressive]
18
V: 0.2V/div. H: 10µsec/div.
DV-79AVi
3
4
Foot of R958 (Cb/B) [progressive]
19
V: 0.2V/div. H: 10µsec/div.
Foot of R957 (Cr/R) [progressive]
20
V: 0.2V/div. H: 10µsec/div.
4