Pioneer DV-626D Service Manual page 36

DV-626D
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
DVDM ASSY
Foot of R169 (RF)
1
V: 100mV/div. H: 0.2µsec/div.
GND
CN201 - pin 5, 6 (RFO)
2
V: 500mV/div. H: 0.1µsec/div.
GND
IC701 - pin 170 (MY CHIP input)
3
V: 1V/div. H: 0.2µsec/div.
GND
CN201 - 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
36
: CD, ABEX-784 Track 1
: MJK1, Title 1-chp 4 or T2-1
: MJK1, Title 1-chp 5 or T2-19
: T2-19, Color-bar (WY and WV Types only)
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
VQEB ASSY
Q541 Base (Composite Video output)
12
V: 0.1V/div. H: 10µsec/div.
GND
Q551 Base (Y output)
13
V: 0.1V/div. H: 10µsec/div.
GND
Q531 Base (C output )
14
V: 0.1V/div. H: 10µsec/div.
GND
Q541 Base (C output when selecting
15 B
color difference output)
V: 0.1V/div. H: 10µsec/div.
GND
Q551 Base (Y output when selecting
16
color difference output)
V: 0.1V/div. H: 10µsec/div.
Q531 Base (C output when selecting
17
R
color difference output)
V: 0.1V/div. H: 10µsec/div.
GND
Q501 Base
18
(R output when select RGB)
V: 0.1V/div. H: 10µsec/div.
GND
Q521 Base
19
(G output when select RGB)
V: 0.1V/div. H: 10µsec/div.
GND
Q511 Base
20
(B output when select RGB)
V: 0.1V/div. H: 10µsec/div.
GND