Pioneer DV-470-K, Руководство по обслуживанию

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DV-470-S
18
1 2 3 4
1 2 3 4
C
D
F
A
B
E
3.2 WAVEFORMS
Note : The encircled numbers denote measuring point in the schematic diagram.
Measurement condition ;
No. 2 to 9 : reference A1 (DVD), T2-chp 19, Color-bar
No. 10 to 15 : reference A1 (DVD), T2-chp 1
DVDM ASSY
B
3
IC201-pin 39 [TROPENPWM]
V: 1V/div. H: 5
µ
sec/div.
4
Foot of R201 (IC201-pin 37) [DMSO]
V: 1V/div. H: 10
µ
sec/div. V: 1V/div. H: 10
µ
sec/div. V: 1V/div. H: 2sec/div.
2
IC101-pin 24 [FG]
V: 1V/div. H: 5msec/div.
7
7
8
9
JA401 [Component Video Out-Y]
V: 1V/div. H: 10
µ
sec/div.
8
JA401 [Component Video Out-P
B
]
V: 2V/div. H: 10
µ
sec/div.
9
JA401 [Component Video Out-P
R
]
V: 2V/div. H: 10
µ
sec/div.
6
JA401 [Composite Video Out]
V: 1V/div. H: 10
µ
sec/div.
5
CN102-pin 11, 10, 9 (IC101-pin 14, 13, 12)
[SPINDLE (WVU)]
V: 2V/div. H: 2msec/div.
10
IC501-pin 16 [PCMCK]
V: 100mV/div. H: 20nsec/div. fs=48kHz
11
IC501-pin 1 [PCMBCK]
V: 2V/div. H: 200nsec/div.
GND
GND
GND
GND
GND GND GND
GND
GND
GND
GND
GND
GND
GND
PLAY
Tray :
opening
OPEN KEY ON PLAY KEY ON :
starting a turn of disc
OPEN KEY ON :
The condition which braking is worn in a turn of disc.
Braking a turn of disc
[Tray stops]
[DMSO_OPEN] [DMSO_PLAY] [DMS~3]
[Tray is opening] [Tray is closing]