Pioneer PRO-720HD Service Manual page 29

1
3.1.6 SUB VIDEO SERVICE ASSY
H
SUB VIDEO SERVICE ASSY
Sub Video Block
CN3002 Y
Cb
Cr 3
32
33
IC3202
34
Y
Pb
CN3002
Pr
26
3
27
28
G or Y
IC4052
VD
SYNC SEP. Copy Guard
HD
HD
Block of Cancel Block of
External Double External Double
2
Speed input Speed Signal
Signal
1
2
I/P Block I/P Block
Fresh Tone Block Fresh Tone Block
Y
IC4051
Pb
IC3001
Y
Pr
Cb
Fresh I/P
Cr 3 3
Tone Conversion
BLock BLock
Refer to
AUX SW
I/P System
RGB SEL
Block.
IP_CLP
IP_BLK
VD
2
HD
H.OSC.SW2
HD
DH
IC4053
IC4054
DH
DV
2
SYNC SW NTSC
SYNC SW HD
VD
2
3
PRO-720HD, PRO-620HD, PRO-520HD
Double Speed
Sync. Sep. Block
Sub-microcomputer Sub-microcomputer
Block Block
Clamp Pulse & Clamp Pulse &
Copy Guard Canceller Copy Guard Canceller
Block Block
Sharpness Sharpness
Block Block
Y
APL
DH,BLK Block
IC4055
IC4001
EQ
SYNC
Y
Y
Block
Mask
(EQ SW)
Block
CP
IC4056
Clamp
CP
Pulse
Generator
Block
3
4
Zoom Zoom
V Scroll V Scroll
Block Block
CN3002
APL
IC4301
Y
CN3001
Pb
Sharpness
Y Pr
VM
Block
3
Pb
CN2201
Pr
VM-Y
2
CP
VM. BLK
CN3001
CP
V.MUTE2
CP
V.MUTE2
Generator
Block
DH
CN2201
DV
2
HS
VS
(To Sub-microcomputer)
2
4
A
B
1
C
8
9
10
2
36
11
4
6 D
29