Pioneer DV-454-K, Service Manual

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19
5 6 7 8
5 6
7
8
C
D
F
A
B
E
DV-454-K
1
IC301 - pin 3 [RF]
V: 200mV/div. H: 0.1
µ
sec/div.
5
Foot of R723 (IC711 - pin 3)
[AUDIO DAC -LRCK]
V: 2V/div. H: 5
µ
sec/div.
2
IC251 - pin 24 [FG]
V: 1V/div. H: 5msec/div.
3 4
IC711 - pin 16 [AUDIO DAC -MCK]
V: 1V/div. H: 20nsec/div.
Foot of R721 (IC711 - pin 1)
[AUDIO DAC -BCK]
V: 2V/div. H: 200nsec/div.
GND
15
IC601 - pin 116 [LOAD_DRV]
V: 1V/div. H: 5
µ
sec/div.
16
IC301 - pin 42 [SPDL_PDM]
7
6
Foot of R723 (IC711 - pin 3)
[AUDIO DAC -LRCK]
V: 2V/div. H: 500nsec/div.
Foot of R721 (IC711 - pin 1)
[AUDIO DAC -BCK]
V: 2V/div. H: 500nsec/div.
8
Foot of R722 (IC711 - pin 2)
[AUDIO DAC -DATA]
V: 2V/div. H: 500nsec/div.
(Waveform of DATA is unsettled.)
13
Foot of C832 (IC801 - pin 27, 28)
[S Video output -Y]
V: 1V/div. H: 10
µ
sec/div.
14
Foot of C822 (IC801 - pin 33)
[S Video output -C]
V: 1V/div. H: 10
µ
sec/div.
11
Foot of C501 (FJMB: IC801 - pin 24, 25)
[Video output -G]
V: 1V/div. H: 10
µ
sec/div.
12
Foot of C601 (FJMB: IC801 - pin 18, 19)
[Video output -B]
V: 2V/div. H: 10
µ
sec/div.
10
Foot of C403 (FJMB: IC801 - pin 21, 22)
[Video output -R]
V: 2V/div. H: 10
µ
sec/div.
9
Foot of C812 (IC801 - pin 30, 31)
[Composite Video output]
V: 1V/div. H: 10
µ
sec/div.
17
CN251 - pin 12, 11, 10
(IC251 - pin 2, 4, 7)
[Spidle driver -A3, A2, A1]
FJMB ASSY
B
SCRB ASSY
G
Note : The encircled numbers denote measuring point in the schematic diagram.
Measurement condition : No. 1 to 2 and 9 to 14 : reference A1 (DVD), T2-chp 19, Color-bar
No. 3 to 8 : reference A1 (DVD), T2-chp 1
GND
6
7
8
10
11
13
14
12
[Tray stops] [Tray is opening] [Tray is closing]
[PLAY]
[PLAY]
[STOP
→
PLAY
→
STOP] [STOP]
STOP STOP PLAY
Accelertar
ON
Brakes
ON
V: 2V/div. H: 500nsec/div. V: 2V/div. H: 500nsec/div. V: 2V/div. H: 2msec/div. V: 2V/div. H: 1sec/div.
GND-R(
0
)
→
GND-G(
-
)
→
GND-B(
=
)
→
3.1.3 WAVEFORMS