Pioneer DV-S755AI Service Manual page 85

5
WAVEFORMS
Note : The encircled numbers denote measuring point in the schematic diagram.
B
DVDM ASSY
Measurement condition : No. 2, 4 and 8 to 11
Q106-emitter (RFO)
2
V: 500mV/div. H: 0.1µsec/div.
AC mode
GND
IC101-pin 42 (Tracking Error)
4
(AI-Inner Tracking Off)
V: 500mV/div. H: 2msec/div.
AC mode
GND
5
6
: MJK1, Title 1-chp 1
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.
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)
18
V: 0.2V/div. H: 10µsec/div.
DV-757Ai
7
8
Foot of R958 (Pb)
19
V: 0.2V/div. H: 10µsec/div.
Foot of R957 (Pr)
20
V: 0.2V/div. H: 10µsec/div.
8
A
B
C
D
E
F
85