Ic Block Diagrams - Sanyo LCD-32XH3 Service Manual

IC Block Diagrams

IC003 < Sync. Separation> LA7217M-T
IC150 < Audio Control/ 3D Surround>NJW1167V
8
INa 1
VOL 1
AGC
INb 32 VOL 1
25
(On the ASSY, PWB, MAIN)
IC101 < AUDIO AMP. > LA4919N-E
AMP Standby
POWER GND
28
3 4 31 30
5
TONE
eala
&
SIMULATED
LPF
STEREO
TONE
2
29
27
-5-
Headphone Block
HP IN1
1
Ripple filter
2
HP IN2
H/P Standby SW
HP D.C
3
HP Standby 4
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
IN1 13
Input amplifier
14
7
VOL 2
VOL 2
Trimmer
VOL 2
6
26
28
HP OUT1
VG=6dB
Voltage
Vcc
Regulator
27
HP OUT2
VG=6dB
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
14 13
15
24 CVA
23
CVB
22 CVW
21 CTH
20 CTL
CSR
19
12 PORT1
PORT0
11
10 AUX1
9
AUX0
GND
16
BIAS
17 V+
18
-
+
+
-