Waveforms [Dvdm Assy] - Pioneer DV-45A Service Manual

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3.12 WAVEFORMS [DVDM ASSY]

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Note : The encircled numbers denote measuring point in the schematic diagram.
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DVDM ASSY
Measurement condition : No. 1 to 4 and 6 to 11 : MJK1, Title 1-chp 1
IC101-pin 3 (RF)
1
V: 200mV/div. H: 0.1µsec/div.
Q106-emitter (RFO)
2
V: 500mV/div. H: 0.1µsec/div.
3
TE
L 13942296513
IC101-pin 42 (Tracking Error)
4
(AI-Inner Tracking Off)
V: 500mV/div. H: 2msec/div.
IC201 - pin 39 (EFM before slice)
5
V: 0.5V/div. H: 0.2µsec/div.
IC201 - pin 1 (EFM)
6
V: 1V/div. H: 0.2µsec/div.
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5
http://www.xiaoyu163.com
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No. 5 : 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 R964 (V)
12
V: 0.2V/div. H: 10µsec/div.
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GND
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6
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2 9
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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.
GND
Foot of R960 (Y)
14
V: 0.2V/div. H: 10µsec/div.
GND
Foot of R959 (Y)
15
V: 0.2V/div. H: 10µsec/div.
Q Q
3 6 7 1 3 1 5
GND
Foot of R958 (Pb)
16
V: 0.2V/div. H: 10µsec/div.
GND
Foot of R957 (Pr)
17
V: 0.2V/div. H: 10µsec/div.
GND
Foot of R959 (Y)
18
V: 0.2V/div. H: 10µsec/div.
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DV-45A
7
9 4 2 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.
0 5 8 2 9 9 4 2 8
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8
9 9
A
B
C
9 9
D
E
F
39
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