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

Block Diagrams, Test Point Overviews, and Waveforms
Block Diagram Audio & Video
B1 TUNER + IF
A 3
+5VSW +VTUN
F312
1328
VIF2
2321 4327 2
F306 7
1302 6,7 9
11
TV
VIF1
4331 3 8
10
FM
F305
F313
4 3311
5 1 RF_AGC
SCL
B1
SDA
2
1
F314
6323 1330
3 4333 S IF2
2 7
1331
7316
S IF1
4334 3 8
3323
SSIF
+5VSW
B2
F315
7320
SEL_IF
B2
B10 REAR IO SCART
A 3
10
CVBS_SC1_AV1_IN
SCART 1
21
10
20 CVBS-In
9 TER-Out
FBL-In
7 R-In
7101
6 G-In EF
9 SC1 _CVBS_RF_OU T
Status
5 B-In
L-In
L-Out
2
2 R-In
1 R-Out 1
7
6
5
B2
2
L
1
R
D SIDE I/O
(AV Part)
1108 1010
AV3_C_IN
C 4 4
Y/CVBS AV3_CVBS_Y_IN
4 3 2 2
SVHS
2 1 AV3_LR_IN
7101
5
PC_AUDIO_LR
CVBS
6 6
L
7 7
R
L 9 9
SVHS
R 10 10
AUDIO IN
B2 HERCULES (AUDIO)
7011 - SOUND
QSS/FM
I2S Proc
AD Conv
Std Stereo
SSIF(Tuner FM) 33
Decoder
B1
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
LC4.1E AB
B2 HERCULES (IF+VIDEO)
7011
TDA120001H1
104
Sound CVBS1
Tr aps
105
AGC
98
Detect
CVBS/Y- X
99
QSS/FM
QSS Mixer/
AM Demod.
100
AM
CVBS_SC1_AV1_IN 74
AV3_CVBS_Y_IN
71
AV3_C_IN
70
SC1_CVBS_RF_OUT
86
SC1_FBL_IN
SC1_R_V_IN
SC1_G_Y_ IN
SC1_B_U_IN
LR_SC1_AV1_IN
SC1_LR_RF-OUT
AUDIO AMPLIFIER (2X2W)
B4
(14, 15, and 17'')
AUDOUT SL
AUDOUT SR
B2
AUDOUT SL
AUDOUT SR
SOUND_ENABLE
POWER_DOWN
B2
12
61 AUDOUTLSR EXT_MUTE
13
AUDOUTLSL
60
Audio
Control
Vol/Treb/
Bass
I
Features
DACs
1
62,63
2
3
4
5
70
OUT_MUTE
FROM 1,2-1200
INVERTER PANEL
6. 18
Input
sw.
cvbs/y
Y
int
Dig. 2H/4H
INA..D
Combfilter
Y Delay Adj.
Chroma
C-X
c
PA L/NTSC/ U
int
SECAM
CS1A..D
H/V Decoder &
V
Baseband int
Delay
Output
sw.
RGB/YP P
+
R B
YUV Interface
cvbs
52 51 50 49 55 54
5013
Y_NOTCH
B6
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
MODE
MUTE
MUTE
1706
STANDBY 1
B2
AUDOUT SL 2
3
7706
74LVCO8AD AUDOUT SR 4
1
MUTE MUTE
5
3
&
2
7710
OUT_MUTE
11
&
AUDIO AMPLIFIER (2x5W) 20 & 23''
7709
1704
TDA7297D
1706
1
STANDBY 19 L+
2
AUDOUT SL 14 16 L-
AUDOUT SR 7 3
4
9 2 R+
7703-1
R- 5
MUTE 8 5
1703
AUD_SUP
7703-2
CON BRI
RO 44 7013
RGB Matrix RGB Matrix
Blue & Black Blue & Black GO 43
Stretch Stretch
BO 42
Gamma Corr. Gamma Corr.
Skin Tone
U/V Tint
Saturation
SAT
YUV
Peaking
SCAVEM
SCAVEM
on Text
U/V Delay
cvbs/y
YUV IN/OUT
HOUT 62 H_CS_SDTV
Sync Sep
H-OSC
Insert H-Shift
H/V FB/SC 66
H-Drive
VDRA
106
Vertical & East-
West Geometry
VDRB V_SDTV
107
53 59 58 57
2057
2056
2027
SIDE AV
D
(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
EF B8
G_SDTV
SEE
7012
I039 BLOCKDIAGRAM
EF SCALER
B_SDTV
B8
B8
F_15310_035.eps
210306