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Block Diagrams, Testpoint Overviews, and Waveforms
27
LC4.9E AA
6.
Block Diagram Audio
B5
AUDIO PROCESSING
B17
SIDE
CONNECTORS
D
SIDE I/O
B2
HERCULES
B1
TUNER & IF
AUDIO
CONTROL
J
LED PANEL
B2
HERCULES
C
AUDIO AMPLIFIER
(CLASS-D)
B16
B15
SCART ANALOGUE IO
B14
DIGITAL IO
B15
SCART ANALOG IO
D
SIDE I/0
B17
SIDE CONNECTORS
E
CONTROL BOARD
B17
SIDE CONNECTORS
B3
SYNC INTERFACE
B6
DC-DC CONVERTER
1735
1
3
1
3
LEFT
SPEAKER
RIGHT
SPEAKER
60
61
AUDOUTLSR
AUDOUTLSL
1K04
10
10
1M36
11
11
HP_LOUT
HP_ROUT
HEADPHONE
SOUND
L-HEADPHONE-OUT
SOUND
R-HEADPHONE-OUT
7217
TDA15021H
1102
UV1318S
RF IN
TUNER
2106
11
4
5
SCL
SD
A
QSS Mixer
AM Demod.
AM
1106
7
8
2
SIF1
SIF2
AD Conv.
Std Stereo
Decoder
21
1
1G02-1
21
1
1G01-1
21
1
SC1_L_RF_OUT
SC1_R_RF_OUT
SCART 1
SCART 2
PC
AUDIO
IN
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
SC2_L_IN
SC2_R_IN
56
57
21
1
SCART 1
SCART 2
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
1704
1705
1702
1701
1706
Channel-
Volume-
Power
3
3
5
5
0345
1K00
6060
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
SERVICE
SMD
116
STATUS_1
B3
119
STATUS_2
B3
MUTE
OUT_MUTE
102
EXT_MUTE
B5
POWER_DOWN
SOUND_ENABLE
111
SOUND-ENABLE
B5
122
SC_STANDBY
B15
B6
F_15430_053.eps
281105
B1
HERCULES
4110
6104
7101
3
SEL_IF_SDM
B2
MUTE
OUT_MUTE
MUTE
4211
4212
1J04
3
3
1M52
1
1
8
8
SOUND-ENABLE_1
7606
7202
7201
1G01
6
2
1G02
6
2
1002
6
6
8
8
L
R
FRONT_L_IN
FRONT_R_IN
49
50
1M36
1K04
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
7601
TS482ID
1
7
2
6
SC1_L
SC1_R
SC2_L
SC2_R
11
10
1F01
2
4
3
7
2
1010
2
3
5
7
7
DETECT
EXT_MUTE
2
1
9
10
7602
74HC08PW
B16
B2
B2
6
8
4G11
4G12
SC1_L_RF_OUT
SC1_R_RF_OUT
SC2_L_MON_OUT
SC2_R_MON_OUT
OUT_MUTE
&
&
&
3
5
3432
RES
7756
3759
3750
+3V3STBY
+3V3SW
SC_STANDBY
7755
PANEL-PWR-CTL
3758
3755
LVDS_VCC
5756
5757
PAN_VCC
+12VSW
B8
B2
B15
EXT 1
EXT 2
AUDIO
L/R IN
EXT 2
EXT 1
3
1
3
1
AUDIO-R
AUDIO-L
3
5
1
7
7700
LM393PT
5702
5700
SOUND-ENABLE
CLASS_D
AMPLIFIER
7701
TDA8925ST
17
1
11
7
9
9
POR_AUDIO
SOUND
ENABLE
7706-7710
4
DC-PROT
1736
7
5
1M02
6
2
1
-19-16V
+19-16V
TO 1M02
PDP
SUPPLY
A
B5
POR
&
3628
3629
13
12
+5V
POR_AUDIO
B16
7
7
PROTECT_AUD
1J00
8
AUDIO
SUPPLY
PROT,CIRCUIT
7715-7717
-19-16V
6702
6705
TO PDP
SUPPLY
3051
PROT-AUDIOSUPPLY
7758
7754
AUDIO-L
AUDIO-R
4219
4618
N.C.