Waveforms [Dvdm Assy] - Pioneer DV-656A-S Service Manual

5

3.13 WAVEFORMS [DVDM ASSY]

WAVEFORMS
Note : The encircled numbers denote measuring point in the schematic diagram.
B
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.
AC mode
GND
Q106-emitter (RFO)
2
V: 500mV/div. H: 0.1µsec/div.
AC mode
GND
3
IC101-pin 42 (Tracking Error)
4
(AI-Inner Tracking Off)
V: 500mV/div. H: 2msec/div.
AC mode
GND
IC201 - pin 39 (EFM before slice)
5
V: 0.5V/div. H: 0.2µsec/div.
GND
IC201 - pin 1 (EFM)
6
V: 1V/div. H: 0.2µsec/div.
GND
5
6
: CD, ABEX-784 Track 1
IC251 - pin 24 (FG)
7
V: 1V/div. H: 5msec/div.
GND
Foot of R261 (FPWM)
8
V: 1V/div. H: 10µsec/div.
GND
Foot of R262 (VPWM)
9
V: 1V/div. H: 10µsec/div.
GND
Foot of R263 (PPWM)
10
V: 1V/div. H: 0.2msec/div.
GND
Foot of R264 (RPWM)
11
V: 1V/div. H: 5msec/div.
GND
Foot of R964 (V)
12
V: 0.2V/div. H: 10µsec/div.
DV-656A-S
6
7
No. 12 to 14 : DVD-REF-A1, T2-Chap.1
No. 15 to 20 : DVD-REF-A1, T2-Chap.19
Foot of R963 (C)
13
V: 0.2V/div. H: 10µsec/div.
Foot of R960 (Y)
14
V: 0.2V/div. H: 10µsec/div.
Foot of R959 (Y)
15
V: 0.2V/div. H: 10µsec/div.
Foot of R958 (Pb)
16
V: 0.2V/div. H: 10µsec/div.
Foot of R957 (Pr)
17
V: 0.2V/div. H: 10µsec/div.
Foot of R959 (Y) Progressive
18
V: 0.2V/div. H: 10µsec/div.
7
8
Foot of R958 (Pb) Progressive
19
V: 0.2V/div. H: 10µsec/div.
Foot of R957 (Pr) Progressive
20
V: 0.2V/div. H: 10µsec/div.
8
A
B
C
D
E
F
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