Block Diagram Audio - Philips LC4.9E Service Manual

Block Diagrams, Test Point Overviews, and Waveforms

Block Diagram Audio

AUDIO
B1
TUNER & IF
1102
UV1318S
F108
2106 1106
4110
IF-TER
11 2
RF IN IFOUT
TUNER
3
7101
4 5
B2 SEL_IF_SDM
B15 SCART ANALOG IO
1G01
6 SC1_COMP_AV1_L_IN
1
2 SC1_COMP_AV1_R_IN
4G11
21
4G12
EXT 1
SCART 1
7G07*
1G02 74HC4053D
1
6 SC2_L_IN
13
2 SC2_R_IN 1
14
21
15
EXT 2
SCART 2
1G03
6 DMMI_L_IN 12
K5
4 DMMI_R_IN 2
10,11 AV2_DMMI_SW
*Only for
DMMI
DVB Set
CONNECTOR
D B17 SIDE CONNECTORS
SIDE I/0
1M36 1K04
1002
L 6 6
AUDIO
L/R IN R 8 8
B14 DIGITAL IO
2 2
4
3
7
CONTROL
E B17
CONTROL BOARD SIDE CONNECTORS
1703
Channel+
1704
Channel-
1705
Menu
1702
Volume+
1701
Volume-
1706 2 2
Power
J LED PANEL
+5V2-STBY
1040
3
VS
2
1 3 3
GND
OUT
6070
1 1
+5V2-STBY
6050
7052 7062 2 2
Green
6051
3051
7051 Red 5 5
+5V2-STBY
4 4
6 6
LC4.9E AB 6.
B2
HERCULES
7217
TDA15021H
SIF1 29 AM
7
QSS Mixer
AM Demod. QSS/FM
SIF2 30
8
33 AD Conv.
Std Stereo
Decoder
34
SC1_COMP_AV1_L_IN
SC1_COMP_AV1_R_IN 35
I2S
Processor
56
SC2_L_IN
SC2_R_IN
57
AUDIO
SELECT
ADC/DAC
B2
FRONT_L_IN 49
FRONT_R_IN
50
53
AudioIN2L
AudioIN2R 54
B2
HERCULES
HERCULES
B3 SYNC INTERFACE
3431
+3v3STBY
+3V3STBY
7430
6F00
+5VSW
3432
RES
24
B5
AUDIO PROCESSING
4212 4618
60 AUDOUTLSL AUDIO-L
4211 4219
61 AUDOUTLSR AUDIO-R
AUDIO SOUND-ENABLE_1
CONTROL
POR_AUDIO
B5
Vol/Treb/
Bass
Features
DACs
7601
TS482ID
2 1
6 7
OUT_MUTE
7602
74HC08PW
2
3 &
1
6 &
5
9
OUT_MUTE
8 &
10
12
POR_AUDIO
&
B16 13
62
SC2_L_MON_OUT
63 SC2_R_MON_OUT
OUT_MUTE
MUTE
36
37
MUTE
B6 DC-DC CONVERTER
B1
4022
+12VSW
3758
7755
B3
B3
B8
+3V3STBY
B5
B5
B6 B15 B2
B15
10
1202
11
B16 SA3
AUDIO
+16V+19V
7700
TDA7490 4,22
1 1 AUDIO-L 10
PWM
6 stby-mute
OSC
3 3 AUDIO-R
PWM
18
2,24
-16V-19V
7701:7707
8 8 SOUND-ENABLE PROT1
SOUND
9 9 ENABLE
POR-CLASSD
7709/7710
6703
AUDIO
PROT_AUDIOSUPPLY
7 7
N.C. SUPPLY
6702
PROT, CIRCUIT
B17 D
SIDE SIDE I/O
CONNECTORS
10 10 SOUND L-HEADPHONE-OUT
HP_LOUT
HP_ROUT 11 11
SOUND R-HEADPHONE-OUT
7 7
DETECT
N.C.
MUTE
RES
SOUND_ENABLE
B2 B15
SCART ANALOGUE IO
POWER_DOWN B16
EXT_MUTE
B2
3628
+5V
SC2_L
SC2_R
SC1_L_RF_OUT
SC1_R_RF_OUT
SC1_L
SC1_R
5756 5754
7754
LVDS_VCC
PAN_VCC
7758
+3V3SW
3759
7756
1736
5731
5701
3 1
3718
3
Speaker L
1735
15W/8Ω
5730
5702
1
23
3717
3
Speaker R
15W/8Ω
1M02
7
DCPROT
TO 1002
6
SA
+16 V+19V
5
3764
SUPPLY
-16 V-19V 2
3761 -16 V-19V
1
+16 V+19V
2
3
5
1G02-1
1
SC2_L_MON_OUT
3
SC2_R_MON_OUT
1
21
EXT 2
SCART 2
1G01-1
1
SC1_L_RF_OUT
3
SC1_R_RF_OUT 1
21
EXT 1
SCART 1
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