Pioneer PRO-720HD Service Manual page 30

1
PRO-720HD, PRO-620HD, PRO-520HD
3.1.7 DIGITAL CONV., CONNECTOR and CONV. AMP ASSYS
J
CONNECTOR
ASSY
A
K
CONV. AMP
ASSY
B
CN1653
CV-R
1
CV-G
2
CV-B
3
EEPROM
CV-BLK
4
SCL
SDA
CN1652
C DH.BLK
1
V.BLK0
2
CN1653
SCCY
7
CN1654
CSDA
2
CSCL
3
CBUSY
4
CPU RST
1
C.MUTE
7
CN1655
CSDA2
7
CSCL2
8
C.H.BLK2
11
V.SIZE ADJ
12
CN1653
V.BLK2
6
D
CN1652
DH.BLK
1
PIN.KEY
3
PD
2
CN1651
30
1
2
Digital Conver Block Digital Conver Block
V DEF Block V DEF Block
124k
EEPROM
SDA,SCL
2
8k
4
2
2
SCL
Digital
SDA
Conver
Conver
etc
UCOM IC
8 8
(70MHz)
3
SCL
2
SDA
PLL
IC
2
3
IC1410
I
EEPROM
Conver Conver
Microcomputer Microcomputer Microcomputer
Block Block
PD PD
Block Block
Conver Amp Block Conver Amp Block Conver Amp Block
I
DIGITAL CONV.
ASSY
DF
×4
AMP
RH,RV
×6
GH,GV
BH,BV
6
D/A
×4
6
AMP
WCLK
BCLK
H.BLK H. Pulse
Cancel
C.H BLK2
Waveform
Shape
PIN/KEY
V1
V2
V3
V.
Wave
3
Gen.
Rough
ADJ SW
3
4
DIGITAL CONV.
ASSY
IC1656
EEPROM
D923
(PD LED)
CN1652
H.V.
6
PARA
LPF
4
RH,RV
GH,GV
BH,BV
6 6
LPF
Conver
Amp
K
CONV. AMP
ASSY
V. Def.
Amp
Mute
PD
4
CN901
CN902
CN903
3
4
5
6
CN901
CN902
CN903
1
2