Block Diagram Audio & Video - Philips LC4.1U AA Service Manual

Block Diagrams, Testpoint Overviews, and Waveforms
Block Diagram Audio & Video
A1 A 3 TUNER + VIF
+5VSW +VTUN
F312
1328
2321 VIF2
4327 2
6,7 F306 7
1302 9
11
TV
VIF1
4331 8
3
FM 10
F305 F313
3311
4 5 1
SCL RF_AGC
A1
SDA
2
1
F314
6323 1330
3 4333 7 S IF2
2
1331
7316 S IF1
4334 8
3
3323
SSIF
A2 +5VSW
F315
7320
SEL_IF
A2
A10 A 3 REAR IO CINCH
Y
Pb
Pr
CVBS_SC1_AV1_IN
SC1_R_V_IN
SC1_G_Y_ IN
CVBS
SC1_B_U_IN
L
R
L_SC1_AV1_IN
R_SC1_AV1_IN
D SIDE I/O
(AV Part)
1108 1010
AV3_C_IN
C 4 4
Y/CVBS AV3_CVBS_Y_IN
2 2
4 3
SVHS
2 1
7101
5
CVBS
6 6
L
7 7
R
9 9
L
SVHS
R 10 10
AUDIO IN
A2 HERCULES (AUDIO)
7011 - SOUND
QSS/FM
I2S Proc
AD Conv
Std Stereo
SSIF(Tuner FM) 33
Decoder
A1
L/R_SC1_AV1_IN
34,35
AV3_LR_IN
49,50
Audio Select
ADC/DAC
56,57
PC_AUDIO_LR 53,54
36,37
SC1_LR_RF_OUT
73 70
LC4.1U AA
A2 HERCULES (IF+VIDEO)
7011 - IF
25
Sound CVBS1
Tr aps
24
31 AGC
Detect
CVBS/Y- X
30
QSS/FM
QSS Mixer/
AM Demod.
29
AM
C-X
HERCULES 7011
TDA15001H NAFTA
TDA15011H AP-NTSC / LATAM
TDA15021H EU / AP-PAL
CVBS_SC1_AV1_IN 55
AV3_CVBS_Y_IN
58
51
AV3_C_IN
59
52
43
64
SC1_R_V_IN
SC1_G_Y_ IN
SC1_B_U_IN
L_SC1_AV1_IN
R_SC1_AV1_IN
A4 AUDIO AMPLIFIER (2X2W)
(14, 15, and 17'')
AV3_LR_IN
AUDOUT SL
PC_AUDIO_LR
AUDOUT SR
A2
AUDOUT SL
AUDOUT SR
7706
74LVCO8AD
SOUND_ENABLE
1
POWER_DOWN
2
A2
12
61 AUDOUTLSR EXT_MUTE
13
60 AUDOUTLSL
Audio
Control
Vol/Treb/
Bass
I AUDIO AMPLIFIER (2x5W) 20 & 23''
Features
DACs
1706
1
62,63
2
3
4
5
1703
OUT_MUTE
FROM 1,2-1200
INVERTER PANEL
6. EN 16
Input
sw.
cvbs/y
Y
int
Dig. 2H/4H
INA..D
Combfilter
Y Delay Adj.
Chroma
c
PA L/NTSC/ U
int
SECAM
CS1A..D
Decoder &
H/V
V
Baseband int
Delay
Output
sw.
RGB/YP P Insert
+
R B
YUV Interface
cvbs
77 78 79 80 74 75 76
5013
Y_NOTCH
A6
SECAM
only
AUD_SUP
7712
TDA1517ATW
15,16
1701
I706 I710
2718 2736
1
3 8,9
2
I707 I711
2712 2737
3
18 12,13
7702
7703
STANDBY
17
MUTE MODE
MUTE 1706
STANDBY
1
A2
AUDOUT SL
2
3
AUDOUT SR 4
MUTE MUTE
5
3
&
7710
11 OUT_MUTE
&
7709
1704
TDA7297D
1
STANDBY 19 L+
AUDOUT SL 2
14 16 L-
3
AUDOUT SR 7
12 R+ 4
2
7703-1
5
MUTE 13 5 R-
AUD_SUP
7703-2
CON BRI
85
RO 7013
RGB Matrix RGB Matrix
EF
GO 86
Blue & Black Blue & Black
Stretch Stretch
BO 87
Gamma Corr. Gamma Corr.
A3 HISTOGRAM
Skin Tone
U/V Tint
Saturation
SAT
7015
YUV
Peaking
SCAVEM
SCAVEM
on Text
U/V Delay
cvbs/y
F007
YUV IN/OUT
HOUT 67
Sync Sep
H-OSC
H-Shift
FB/SC 66
H/V SANDCASTLE
H-Drive
F006
VDRA
23 VSYNC
Vertical & East-
West Geometry
VDRB
22
70 71 72
2057
2056
2027
D SIDE AV
(LS CONN. PART)
1110
1
2
3
OR
1105
4
1106
HEADPHONE
R
3
4Ω/2W
OR
2
8Ω/5V
1 L
OR
1107
1
2
3
4
5
7014
I044
EF
R_SDTV
TO
I041
A8
G_SDTV
SEE
7012
I039
BLOCKDIAGRAM
EF
SCALER
B_SDTV
2014
+5VSW
7005# 7006#
8 8
VCC VCC
6 2 6
2
THR TR THR TR
4 4
RES RES
7 7
DISC DISC H_CS_SDTV
3
OUT OUT
3
CTRL CTRL
A8
5 5
2015
2028 2029 2034
# = NE555 TIMER
2040
+5VSW
7016
3031
7007#
8
3036
VCC
6 2
THR TR
4
RES
7
V_SDTV
DISC
3
OUT
CTRL
A8
5
2042 2045
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