Sony STR-DE898 Service Manual page 48

STR-DE898/DE998
Ver. 1.1
• IC Block Diagrams
IC2560 BD3842FS-FD2 (VIDEO (AU) BOARD)
24 23 22 21
LOGIC
*
F-SW1:INPUT FUNCTION1
F-SW2:INPUT FUNCTION2
1 2 3 4
IC3601 CXD2064Q (VIDEO BOARD (2/2))
36 35 34 33
4fsc
FIN 37
CKSL 38
PLSL 39
PHASE
MCKO 40 COMPARATOR
ADCK 41
CPO 42
1/2 1/4
PLVS 43
VCV 44 VCO
PLVD 45
CLVD 46
NTSC: 1H
A/D
CLPEN 47 PAL : 2H
CLVS 48
CLAMP
LOGICAL OPERATION
1 2 3 4 5 6
STR-DE898/DE998
20 19 18 17 16 15 14 13
5 6 7 8 9 10 11 12
32 31 30 29 28 27 26 25
24 DTR
23 PNR
22 VEH1
21 VEH2
20 VEH3
19 MOD1
18 DVSS
VERTICAL CONTOUR
ACCENTUATION CIRCUIT
17 MOD2
NTSC: 1H
PAL : 2H
16 DVDD
+ +
+ +
DL D/A
– –
15 TEST
ADAPTIVE
FILTER
OPERATION
D/A 14 VB
13 IRF
7 8 9 10 11 12
SECAM
S GND 31
KILLER
DELAY
TOT
ACC
TOT ON
32
C IN
SUB CONT
CV/YC
A PED 33
VIDEO SUB
CVBS/Y IN 34
SW CONT
ADRS 35
SCL 36 I 2 C BUS
DECORDER
37
SDA
V. SYNC
V SYNC 38
SEP
H SYNC 39
LOCK AFCH
V HOLD 40
H. SYNC PHASE
SEP DET
48 48
IC3701 CXA2199Q (VIDEO BOARD (2/2))
30 29 28 27 26 25
24
X' TAL PIN
4.43/3.58
SW
CHROMA
CHROMA PHASE
LPF
DET
VCO SHIFT
HUE
DEM
COLOR PHASE
AXIS
KILLER DET
ID AXIS
BST AMP PAL ID FF
2fH
NT/PAL
ACC
HUE
DET
SUB HUE
NT/PAL
SUB COLOR
SECAM
SHP f0
TRAP ON
TRAP
PRE
DELAY OVER
SHARPNESS
TRAP
CLAMP
DELAY SHARPNESS
V COUNT V2 PED V2 DRIVE
DOWN
V2 PED
V2 DRIVE
50/60
C MODE
2fH
1/32
32fH
IREF
VCO
1 2 3 4 5 6 7
23
22 21
CLAMP
DET SW
COLOR
EXT COLOR
NT/PAL
COLOR
V PED
V PED 20 V OUT
U PED
U PED 19 U OUT
18 Y OUT
Y DRIVE
17 SGND2
AUTO
Y DRIVE
PEDESTAL
SCP
16
H. DRIVE 15 H TIM
14 V TIM
V2 IN
13
U2 PED U2 DRIVE 12 U2 IN
U2 PED U2 DRIVE
Y2 DRIVE 11 Y2 IN
-
ABL
ABL CENT
Y2 DRIVE
8 9 10