Pioneer DV-525 Service Manual page 34

DV-525
WAVEFORMS
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
No. 18 to 20
No. 21 to 23
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 70 (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.
IC201 - pin 39 (EFM before slice)
5
V: 1V/div. H: 1µsec/div.
GND
IC201 - pin 1 (EFM)
6
V: 1V/div. H: 0.2µsec/div.
GND
34
: CD, ABEX-784 Track 1
: MJK1, Title 1-chp 4
: MJK1, Title 1-chp 5
: T2-19, Color-bar
: T2-1
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
WV and WY Types Only
IC18 - pin 39 (Y output)
13
V: 0.2V/div. H: 5msec/div.
GND
IC18 - pin 6 (C output)
14
V: 0.2V/div. H: 5msec/div.
GND
IC18 - pin 45 (C output when
B
15
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
R
17
selecting color difference output)
V: 2V/div. H: 5msec/div.
IC26 - pin 7
18
(R output when select RGB)
V: 50mV/div. H: 10µsec/div.
GND
IC26 - pin 4
19
(G output when select RGB)
V: 50mV/div. H: 10µsec/div.
GND
IC26 - pin 1
20
(B output when select RGB)
V: 50mV/div. H: 10µsec/div.
GND
IC26 - pin 17
21
(V COMP output when select video)
V: 50mV/div. H: 10µsec/div.
GND
IC26 - pin 19
22
(Y output when select video)
V: 50mV/div. H: 10µsec/div.
GND
IC26 - pin 22
23
(C output when select video)
V: 50mV/div. H: 10µsec/div.
GND