-6-
IC001 < AUDIO AMP. > LA4919N-E
IC Block Diagrams
2
1
3
4
6
5
7
8
10
9
12
13
14
17
18
19
20
21
22
23
26
HP IN1
Headphone Block
27
Ripple filter
Ripple filter
Voltage
Regulator
Vcc
28
VG=6dB
VG=6dB
H/P Standby SW
15
16
A
B
AMP. Standby
SW
Output
amplifier
Output
amplifier
Nonlinear
amplifier
24
25
Muting circuit
used at power
on
Intput
amplifier
H. L. S
Switching regulator Block
Switching
Drive
A B C D
*
H. L. S
Higher Level
Signal Selector
Headphone stage
Input amplifier stage
Switching regulator stage
Power TR stage
VCC
C
D
Output
amplifier
Output
amplifier
Nonlinear
amplifier
OUT1
+
OUT1
-
Output amplifier
stage
11
REF amplifier
Input amplifier
HP IN2
HP OUT2
HP OUT1
HP D.C
HP Standby
AMP Standby
D.C
DDL
ON TIME
IN2
PRE GND
PRE VCC
IN-VREF
IN1
POWER GND
POWER GND
SW GND
SWB
SWE
SW OUT
OUT2
+
OUT2
-
IC101 < IF-PLL Demodulator > TDA9886TSV4P
VIF2
TUNER AGC
VIF-AGC
SIF AGC
OUTPUT
PORTS
I
2
C-BUS TRANSCEIVER
SINGLE REFERENCE QSS MIXER
INTERCARRIER MIXER
AND AM DEMODULATOR
VIF-PLL
RC VCO
DIGITAL VCO CONTROL
AFC DETEVTOR
SOUND TRAPS
4.5 to 6.5MHz
AUDIO PROCESSING
AND SWITCHES
NARROW-BAND
FM-PLL DEMODULATOR
SUPPLY
MAD
1
2
3
4
6
5
7
8
10
9
12
13
14
11
17
18
19
20
21
22
23
15
16
24
VIF1
SIF2
SIF1
Vp
AGND
N.C.
OP1 OP2
SCL
SDA
DGND SIOMAD
Sound intercarrier output
and MAD select
FM-PLL
FM-PLL filter
cAGC
cAF
de-emphasis
network
cAF
DEEM
AUD
Audio output
CVBS
Video output: 2Vp-p
(1.1vp-p without trap)
VPLL
REF
AFC
External reference signal
or 4MHz crystal
VIF-PLL filter
VAGC
cVAGC
(pos)
TOP
TAGC
cAGC(neg)
cBL
IC3501 < BBE/Bass Sound Processer >
NJM2155M
2
1
3
4
6
5
7
8
10
9
12
13
14
17
18
19
20
21
15
16
11
LOWOUT-L
OUT-L
Vcc
IN-L
FILTER
MACH3
HOUT-L
LOWIN-L
IN-R
HIN-R
HOUT-R
22
23
24
HIL-L
BBE
BBE
Mach3
Bias
Control
LOWIN-R
LOWOUT-R
OUT-R
VREF
GIN
GOUT
LPIN
LPOUT
GND
BBE
PROCESS
LO CONTOUR