Sanyo CP29AF2 Service Manual page 6

IC Block Diagrams
IC501 < Vertical Output > LA7841
THERMAL
PROTECTION
LA7841
2
1 3
IC1920 <Audio Control> UPC1857ACT
MFO MF1 LF1 1/2Vcc
29 30 28
+
+
1/2Vcc
-
LPF
Lin 26
+
-
+
+
PHASE
TRANSFER
-
PS1 PS2 PS3 PS4
+
+
27
Rin
Mix 25
UPC1857ACT
2 3 4 5
FC1 FC2 FC3 FC4
IC301 <COMB Filter> TC9090ANM
3 LINE
VIDEO ADC
MEMORY
CLAMP
4fsc
19
CLOCK
PLL
fsc
PUMP
UP
-
AMP
+
7
6
4
5
DGND ADS SDA SCL Vcc
24 23 22 21 20 15
2
I C BUS
INTERFACE
L
+
L+R
+
L+φ
+
+
φ
EFFECT
LPF
CONTROL
-
R-φ
+
+
R +
6 1
LF2 AGND
SECAM
VERTICAL
CORING
ENHANCER
4.43 NTSC
BPF
DYNAMIC
1 LINE DOT
BPF
COMB FILTER
IMPROVEMENET
BPF
4fsc
IC001 < Sound Output > LA4270
LA4270
300
Ripple
Filter
OFL1 OFL2 LBC LTC VOL-C
19 18 10 9 17
14 Lout
TONE
+
OFFSET
CONTROL
+
VOLUME
BALANCE
CONTROL
MUTE
+
13 Rout
+ TONE
OFFSET
CONTROL
11 12 8 7 16
OFR1 OFR2 RBC RTC BAL-C
+
PEDESTAL
+
+
CLIP
-
CHROMA KILLER
BPF
BPF
2
I C BUS
8/9
BUS
-6-
30K
-
CH1
+
Thermal
Shutdown
Over
Voltage
+
CH2
-
30K
Vcc
300
25
Y DAC Y-OUT
23
C DAC C-OUT
TC9090ANM