Pioneer DV-414 Service Manual page 28

DV-515, DV-414
• WAVEFORMS OF DVDM ASSY
Note : The encircled numbers denote measuring point in the schematic diagram.
Measurement condition : No. 1 to 4 and 6 to 11 : Disc MJK1, Title 1-chp 1
No. 5
No. 12 to 14
No. 15 to 17
Q109-Emitter (RF)
1
V: 100mV/div. H: 0.1 S/div.
TP (RFO)
2
V: 500mV/div. H: 0.1 S/div.
IC301-pin 19 (RF for A/D converter)
3
V: 1V/div. H: 0.2 S/div.
TP (Tracking Error)
4
V: 1V/div. H: 2mS/div.
IC201-pin 39 (EFM before slice)
5
V: 1V/div. H: 1 S/div.
IC201-pin 1 (EFM)
6
V: 1V/div. H: 0.2 S/div.
28
: CD, ABEX-784 Track 1
: MJK1, Title 1-chp 4
: MJK1, Title 1-chp 5
Q281-Collector (FG)
7
V: 1V/div. H: 5mS/div.
DC 2V
Foot of R261 (FPWM)
8
V: 1V/div. H: 10 S/div.
Foot of R262 (VPWM)
9
V: 1V/div. H: 10 S/div.
Foot of R263 (PPWM)
10
V: 1V/div. H: 0.2 S/div.
Foot of R264 (RPWM)
11
IC801-pin 45 (Composite video output)
12
V: 500mV/div. H: 10 S/div.
IC801-pin 39 (Y output)
13
V: 500mV/div. H: 10 S/div.
IC801-pin 36 (C output)
14
V: 500mV/div. H: 10 S/div.
IC801-pin 45 (C
15
selecting color difference output)
V: 500mV/div. H: 10 S/div.
IC801-pin 39 (Y output when
16
selecting color difference output)
V: 500mV/div. H: 10 S/div.
IC801-pin 36 (C
17
selecting color difference output)
V: 500mV/div. H: 10 S/div.
DC1.4V
GND
GND
GND
output when
B
GND
GND
output when
R