26
LC4.8A AA
6.
Block Diagrams, Testpoint Overviews, and Waveforms
Block Diagram Audio
B2
HERCULES
B1
TUNER & IF
AUDIO
B22
DIGITAL IO
B23
CINCH ANALOGUE
D
SIDE AV
B17
SIDE CONNECTORS
B23
CINCH ANALOGUE
B12
HDMI
B5
AUDIO PROCESSING
B17
SIDE
CONNECTORS
D
SIDE I/O
AUDIO
B16
SA3
CONTROL
J
LED PANEL
B2
HERCULES
E
CONTROL BOARD
B17
SIDE CONNECTORS
B3
SYNC INTERFACE
B6
DC-DC CONVERTER
60
61
7217
TDA15021H
1102
UV1316E/A I H-4
RF IN
RF OUT
TUNER
2106
11
4
5
SCL
SD
A
QSS Mixer
AM Demod.
AM
1106
7
8
2
SIF1
SIF2
AD Conv.
Std Stereo
Decoder
SC1_L_RF_OUT
SC1_R_RF_OUT
AudioIN2L
AudioIN2R
53
54
SC1_COMP_AV1_L_IN
SC1_COMP_AV1_R_IN
SC1_COMP_AV1_L_IN
SC1_COMP_AV1_R_IN
34
35
SC2_L_MON_OUT
SC2_R_MON_OUT
SC2_L_IN
SC2_R_IN
56
57
62
63
36
37
29
30
33
IF-TER
IFOUT
F108
AUDIO
SELECT
ADC/DAC
AUDIO
CONTROL
Vol/Treb/
Bass
Features
DACs
I2S
Processor
QSS/FM
F_15420_050.eps
130705
4110
6104
7101
3
SEL_IF_SDM
B2
MUTE
OUT_MUTE
7202
1302
6
6
8
8
L_FRONT_IN
R_FRONT_IN
FRONT_L_IN
FRONT_R_IN
49
50
1M36
1K04
SC2_L
SC2_R
Only on
DVB Sets
SC2_L_MON_OUT
SC2_R_MON_OUT
AUDIO
L/R IN
1R06
1R03
SC2_L_IN
SC2_R_IN
1R07
AV3_L
AV3_R
3Q30
3Q31
AV3_LEFT
AV3_RIGHT
7D05
14
12
2
15
19
1
18
2
7D03
SII9993CT
HDMI
PANELINK
RECEIVER
13
1
16
14
1Q03
4
12
7
9
10
6
3
1
RX2+
RX2-
RX1+
RX1-
RX0-
RX0+
RXC+
RXC-
HDMI
97
96
92
91
87
86
84
83
PC
AUDIO
IN L/R
CVI-1
AUDIO
IN L/R
AV3_HDMI-AUDIO_SEL
10,11
AUDOUTLSR
AUDOUTLSL
1K04
10
10
1M36
11
11
HP_LOUT
HP_ROUT
HEADPHONE
SOUND L-HEADPHONE-OUT
SOUND R-HEADPHONE-OUT
MUTE
OUT_MUTE
POWER_DOWN
SOUND_ENABLE
4211
4212
1J04
(1M52)
1
1
1739
3
3
8
8
SOUND-ENABLE_1
7606
7601
TS482ID
1
7
2
6
1010
2
3
5
7
7
DETECT
EXT_MUTE
2
1
9
10
7602
74HC08PW
B16
B2
B2
6
8
OUT_MUTE
&
&
&
3
5
9
9
POR_AUDIO
B5
&
3628
3629
13
12
+5V
POR_AUDIO
B16
7
7
PWM
7700
TDA7490
5731
1736
1
3
Speaker L
15W/8
Ω
Speaker R
15W/8
Ω
1M02
6
5
2
1
7
TO 1002
SUPPLY
SA
-16 V-19V
+16V+19V
-16V-19V
SOUND
ENABLE
DCPROT
SOUND-ENABLE
AUDIO
SUPPLY
PROT, CIRCUIT
+16 V+19V
PROT_AUDIOSUPPLY
7701:7707
POR-CLASSD
3718
3717
PROT1
5701
5702
stby-mute
10
6
18
3
23
4,22
2,24
AUDIO-L
AUDIO-R
3764
6703
3761
6702
-16 V-19V
+16 V+19V
7709/7710
PWM
OSC
5730
1735
1
3
AUDIO-L
AUDIO-R
N.C.
4219
4618
N.C.
AUDIO
OUT L/R
N.C.
1704
1705
1702
1701
1706
Channel-
Volume-
Power
3
3
5
5
0345
1K00
6050
6051
7062
7052
7051
3063
1040
GND
+5V2-STBY
VS
OUT
2
2
4
4
6
6
LED2
LED1
RC
3061
+5V2-STBY
Red
Green
PC-TV-LED
LED_SEL
IR
+5V2-STBY
KEYBOARD
97
7217
TDA15021H
115
107
120
7430
+3v3STBY
+5VSW
3431
6F00
114
SEL_IF_SDM
4022
116
STATUS_1
B3
SERVICE
SDM
119
STATUS_2
B3
102
EXT_MUTE
B5
111
SOUND-ENABLE
B5
122
SC_STANDBY
B15
B6
B1
HERCULES
2
3
1
6070
1
1
LIGHT-SENSOR
LIGHT_SENSOR
1703
Menu
1M01
2
2
1K02
(1M01)
KEYBOARD
+3V3STBY
ITV_IR_SW_RESET
123
1202
127
AV2_DMMI_SW
11
10
3432
RES
7756
3759
3750
+3V3STBY
+3V3SW
SC_STANDBY
7755
PANEL-PWR-CTL
3758
3755
LVDS_VCC
5756
5754
PAN_VCC
+12VSW
B8
B2
B15
3051
7758
7754
B7
AV
AUDIO
IN L/R