Ic Block Diagrams - Sanyo LCD-32XL2 Service Manual

IC Block Diagrams

IC001 < AUDIO AMP. > LA4919N-E
Headphone Block
HP IN1
1
Ripple filter
2
HP IN2
HP D.C
3
HP Standby 4
AMP. Standby
AMP Standby 5
SW
6
D.C Ripple filter
7
DDL
Muting circuit
8
ON TIME
used at power
on
9
IN2
Intput
amplifier
PRE GND 10
Output amplifier
11
PRE VCC
stage
REF amplifier
12
IN-VREF
13
IN1
Input amplifier
POWER GND 14
IC101 < IF-PLL Demodulator > TDA9886TSV4P
TOP TAGC
9
14
c AGC(neg)
TUNER AGC
VIF2
2
VIF1
1
SIF2
24
SIF1
23
SUPPLY
20
18
Vp
AGND
28
HP OUT1
VG=6dB
Voltage
Vcc
Regulator
27
HP OUT2
VG=6dB
H/P Standby SW
26
POWER GND
Output
A
amplifier
25
OUT2
Nonlinear
B
amplifier
24 OUT2
Output
amplifier
23
SW GND
Switching regulator Block
Switching
H. L. S
22
SWB
Drive
A B C D
21
SWE
*
H. L. S
Higher Level
Signal Selector
20
SW OUT
Headphone stage
19
VCC
Input amplifier stage
Switching regulator stage
18
Power TR stage
17
Output
C
amplifier
16
OUT1
Nonlinear
D
amplifier
15
OUT1
Output
amplifier
c VAGC
VIF-PLL filter
(pos)
VAGC
VPLL
16
19
c BL
VIF-AGC RC VCO
VIF-PLL
SINGLE REFERENCE QSS MIXER
INTERCARRIER MIXER
AND AM DEMODULATOR
MAD
OUTPUT
2
SIF AGC I C-BUS TRANSCEIVER
PORTS
c AGC
3 22
13 11
OP1 OP2 SCL
N.C.
IC3501 < BBE/Bass Sound Processer >
NJM2155M
IN-L
HIL-L
HOUT-L
-
LOWIN-L
+
LOWOUT-L
OUT-L
FILTER
BBE
PROCESS
LO CONTOUR
MACH3
Vcc
+
-
External reference signal
or 4MHz crystal
REF
AFC
15 21
DIGITAL VCO CONTROL AFC DETEVTOR
SOUND TRAPS
4.5 to 6.5MHz
AUDIO PROCESSING
AND SWITCHES
NARROW-BAND
FM-PLL DEMODULATOR
7
10 12 4
DGND SIOMAD
SDA
Sound intercarrier output
and MAD select
-6-
CVBS
17
Video output: 2Vp-p
(1.1vp-p without trap)
AUD
8 Audio output
DEEM
5
de-emphasis
network
c AF
6
c AF
FM-PLL
FM-PLL filter
IN-R
HIN-R
HOUT-R
LOWIN-R
LOWOUT-R
OUT-R
VREF
GIN
GOUT
LPIN
LPOUT
GND