Waveforms - Pioneer DV-575A-S Service Manual

1

3.2 WAVEFORMS

QQ
3 7 63 1515 0
Note : The encircled numbers denote measuring point in the schematic diagram.
B
DVDM ASSY
A
Measurement condition ;
No. 2 to 9 : reference A1 (DVD), T2-chp 19, Color-bar
No. 10 to 15 : reference A1 (DVD), T2-chp 1
B
IC201-pin 39 [TROPENPWM]
3
V: 1V/div. H: 5µsec/div.
[Tray stops]
C
Foot of R201 (IC201-pin 37) [DMSO]
4
V: 1V/div. H: 10µsec/div.
TE
L 13942296513
[DMSO_OPEN]
D
OPEN KEY ON :
The condition which braking is worn in a turn of disc.
CN102-pin 11, 10, 9 (IC101-pin 14, 13, 12)
5
[SPINDLE (WVU)]
V: 2V/div. H: 2msec/div.
E
JA401 [Composite Video Out]
6
V: 1V/div. H: 10µsec/div.
www
F
24
1
http://www.xiaoyu163.com
2
IC101-pin 24 [FG]
2
V: 1V/div. H: 5msec/div.
[Tray is opening]
GND
V: 1V/div. H: 10µsec/div.
GND
JA401 [Component Video Out-Y]
7
V: 1V/div. H: 10µsec/div.
JA401 [Component Video Out-P
8
V: 2V/div. H: 10µsec/div.
JA401 [Component Video Out-P
9
V: 2V/div. H: 10µsec/div.
GND
IC501-pin 16 [PCMCK]
10
V: 100mV/div. H: 20nsec/div. fs=48kHz
x ao
y
GND
. i
2
http://www.xiaoyu163.com
3
8
GND
GND
Q Q
3 6 7
[DMSO_PLAY]
GND
]
B
7
]
R
8
9
u163
GND
DV-575A-S
3
4
2 9 9 4
[Tray is closing]
V: 1V/div. H: 2sec/div.
1 3 1 5 0 5 8 2 9
[DMS~3]
Tray :
opening
PLAY
OPEN KEY ON PLAY KEY ON :
starting a turn of disc
Braking a turn of disc
IC501-pin 1 [PCMBCK]
11
V: 2V/div. H: 200nsec/div.
m
co
.
4
2 8
9 9
GND
9 4 2 8 9 9
GND
GND
GND
GND
GND