Block Diagram Video - Philips L04HU Service Manual

Block Diagrams, Testpoint Overviews, and Waveforms

Block Diagram Video

VIDEO
J1
INTERFACE MODULE (VIDEO PART)
- for "SYSTEM" version only -
VIDEO INTERFACE
7705,7706
PULSE
N.C.
FORMER
HD
7716
11 HSYNC_OUT
22
CVBS_OUT CVBS0
18 G_IN
DCM
17 B_IN
MODULE
19 R_IN
7708 G
20 FBL_IN
B
12 VSYNC_OUT
31 Y_VIDEO_IN
R
32 C_VIDEO_IN
FBL
7720
SC
PULSE
FORMER
Y/CVBS
Cin
TO
See block
SSIF
AUDIO diagram
PART AUDIO
(optionel)
A4
HERCULES
7200-A (IF)
A3
TUNER IF
7003
9002
A2 VT_SUPPLY SSIF
+5V
6001
9003 5001 BZX79-C33
PHASE
+5VS
DISC
1000 6, 7 9
VT
F002
1002
FM-RADIO 10
ERR
FM 1003
FM 10 TUNER
VIF_1 24
F004
+
11
IF
VIDEO
TV TUNER
IF
TV VIF_2 25
AGC
5 4 1
I002
3001
RF 31
A4 SDA TUNER IF
I001 AGC
3000
A4 SCL
SIF1 29
AUDIO IF
SIF2 30
QSS/AM
A8
REAR I/O CINCH
1229
1
SC2_Y/CVBS_IN
Y/CVBS_IN
2
2 3
SC2_CHROMA_IN
SVHS
3
1 4 Cin
5
AV1
SC1_CVBS_IN
V
AV2
V
YUV INPUT
SC1_GREEN_IN
Y
SC1_BLUE_IN
U
SC1_RED_IN
V A5 CONNECTION
7606
MONITOR
7607
OUTPUT
SW_SC2_CVBS
SC2_CVBS_OUT
V
D SIDE AV 1252
Y 7
6
SVHS
1207
2 3 SIDE_CHROMA_IN
C 5
7
1 4
OR
5
6
OR SIDE_Y/CVBS_IN
VIDEO
5
IN
I2
FRONT AV
1252
Y/CVBS_IN
5
L04HU AA 6.
A5
1219 1219
1 6
2 7 N.C.
See block
3 8 HD_PIP A4
diagram
DEFLECTION
4 9 ITV_V1OUT
1212 1212
4 INT_Y/GREEN_IN
6 INT_Pb/BLUE_IN
2
3 8 INT_Pr/RED_IN
4 9 INT_FBL
10 SANDCASTLE See block
A4
diagram
DEFLECTION
6
7
1229
1
2
3
7200-B (CVBS I/O + FILTERS + COLOUR DECODING)
SWITCH 86
SW_SC2_CVBS 81
VCO
PLL
SC1_CVBS_IN 74
SOUND
VIDEO
TRAP SC2_Y/CVBS_IN 71
DEMOD
SIDE_Y/CVBS_IN 78
CVBS1
PLL
SC2_CHROMA_IN 70
FM/QSS SIDE_CHROMA_IN 77
SOUND
TO
MIXER
AUDIO
PART
AM
AM
SOUND See block
diagram
DET.
AUDIO
F205 F206
F201 2V / div DC
F203 2V / div DC
500mV / div DC 1V / div DC
10ms / div 20µs / div
F216 F217 F218
1V / div DC 1V / div DC 1V / div DC
20us / div 20us / div 20us / div
A4
HERCULES
7200-D (YUV PROCESSING)
WHITE/BLACK
Y
STRETCH
Pr GAMMA COR.
PEAKING
Pb
TINT CONTROL
SATURATION
SKINTONE
SCAVEM
PROC.
23
OUTPUT 65 INTF_CVBS_OUT
SWITCH
N.C.
Yint Yint
CVBS/Y
INPUT
COMB
SWITCH
FILTER
&TRAP
SWITCH Uint
PAL, NTSC
C CHROMA/CVBS
SECAM
DECODER
Vint
SC1_FBL
N.C.
VIDEO
IDENT
SC1_FBL
F240 F241 F242 F331 F332
500mV / div DC 500mV / div DC 500mV / div DC 500mV / div DC 500mV / div DC
20µs / div 20µs / div 20µs / div 20µs / div 20µs / div
F224 F225 F226 F338 F339
500mV / div DC 500mV / div DC 500mV / div DC 50V / div DC 50V / div DC
20us / div 20us / div 20us / div 20us / div 20us / div
7200-E (RGB PROCESSING + CATHODE CALIBRATION)
FROM µP PART
R
BLUE
BRIGHTNESS
CLAMP
STRETCH +
RGB G + OSD
& PEAK WHITE
ADDER INSERTION
MUTE
CONTRAST LIM.
B
BEAM
R_Y CURRENT
LIM.
G_Y
MATRIX
B_Y
64
(RGB/YPrPb/YUV
7200-C INPUT SWITCHING)
51 50 49 53 54 55 57
YPrPb2/ RGB2/
YPrPb3 RGB3
SELECTION SELECTION
DVD RGB DVD YUV
TO TO TO TO
DVD DVD YUV DVD
Yint
Uint
Vint
52 INSSW3 YUV
SELECTION RGB
LOGIC
DVD
F333
B1 B2
CRT SCAVEM
500mV / div DC
20µs / div
ROT
F341
50V / div DC
20us / div
SVM
A5
F240
F241
F242
F331
1204 1331 7330
3226
3
42 BOUT 1 B
1
3227 F332
CATHODE OUTPUT 43 GOUT 2 2 G
CALIBRATION STAGE 1
3228
44 R
ROUT 3 3
2
IBLACK 4 4
5 5 F333
BC_INFO
45
SVM 6 6 SVM
7 7 ROT
VSVM FILAMENT
F353
+200V
46
F354
3351
7308
+200VA
BCL 2351
A2 A4
1351 1351
1 2 3
to 1401
A2
DEFLECTION
58 59
DIGITAL SIGNAL PROC.
- 4:3 LINEAR/NON-LINEAR SCALING
- DOUBLE WINDOW PROC.
ADC DAC
Y
Pr
Pb
FILAMENT
1381
1
ROTATION
ROTATION
COIL
OUTPUT 2
(OPTIONAL)
FILAMENT VSVM
1361
1
SCAVEM
SCAVEM
COIL
2
OUTPUT
(OPTIONAL)
+200VA
F341
3332 1332
7 B AQUADAG
11
F338
3334
B
9 G 6
G CRT
8
F339
3336 R
8 R
10 9 5 7 1
5
25kV
5352
EHT-b
A2
FROM DEFLECTION
E_14820_008.eps
4 5
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