Pioneer HD-V9000 Service Manual page 125

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AUDIO (MAIN AUDIO / HP / DIGITAL AUDIO)
A
14, 15/18 DECM SERVICE ASSY
D/A CONVERTER
LRCK (48 kHz)
IC1502
BCK
FPGA
(3.072 MHz)
AUDIO DATA
42
MAIN AUDIO Diagram
Gain
TE
27
L 13942296513 DAC IC OUT
[dB]
LEVEL
[Vp-p]
DIGITAL AUDIO Diagram
37
DIT IC OUT
LEVEL
[Vp-p]
JA5501 - pin 1
30
V: 2 V/div H: 200 μsec/div
JA5502 - pin 2
41
V: 0.5 V/div H: 100 μsec/div
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D
HPVB ASSY
3.5dB
& Active Filter
27
IC5503
L
PCM1753DBQ
(7)
R
(8)
IC5507
NJM4565MD
(3) (1) (2)
OP AMP
43 44
(24) (26) (28)
IC5501 IC5506
AK4114VQ TC7SET08FUS1
37
DIT (16) Level Shift
(3.3V -> 5V)
RCA OUT
3.5dB-AMP
(10 kΩ termina-
28 29 30
Buffer
& Filter
tion nothing)
* 5.49 (10 kΩ exists)
Pulse
38 39 40
Level Shift Buffer
Transformer
JA5501 - pin 3
31
V: 2 V/div H: 200 μsec/div
GND
IC5501 - pin 24
42
V: 1 V/div H: 5 μsec/div
x ao
y
i
GND
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6
8
Buffer
28 29
L L
MUTE
R R
MUTE
IC5509
NJM4565MD
OP AMP
Buffer
32
L
MUTE
R
MUTE
IC5513
NJM4565MD
OP AMP
IC5508
TC74VHCU04FT
38 39 40
Buffer
HP Diagram
Q Q Gain
3.5dB-AMP
28
27
DAC IC OUT 3 6 7 1 3
[dB] & Filter
LEVEL [Vp-p]
DIG OUT (75 Ω
NOTE:
termination
41
nothing)
• The encircled numbers denote measuring point.
• R ch is equal to L ch.
* 0.5 (75 Ω exists)
• The level of the diagram and signal waveforms show at the
"1 kHz, 0 dB (L/R)" audio playback.
JA9001 - pin 2
35
V: 2 V/div H: 200 μsec/div
GND
IC5501 - pin 26
43
V: 1 V/div H: 100 nsec/div
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GND
HD-V9000
6
7
2 9 9 4 2 8
AUDIO MAIN
JA5501
30
Lch
(1)
31
Rch
(3)
VR9001
Rotary SW IC9001
33
BH3544F
(4)
34
HP AMP
(1) (2)
(7) (3)
(5)
DIGITAL AUDIO
JA5502
41
(2)
32 33 34
1 5 0 5 Buffer 8 VR 2 9 9 4
JA9001 - pin 3
36
V: 2 V/div H: 200 μsec/div
GND
IC5501 - pin 28
44
V: 1 V/div H: 200 nsec/div
m
co
GND
7
8
9 9
A
B
HP
JA9001
35 : Lch
36
: Rch
C
HP-AMP IC Mini Jack
35
2 8 9 9
OUT (HP OUT)
D
E
GND
F
GND
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