Video Converter - Grundig SEDANCE 27 Service Manual

GRUNDIG Service
Hauptplatte – Video-Konverter / Main Board – Video Converter
L101
+5V
10uH
R101
R120
SC2_OUT_V
75R
22R
C147
2N2
R102
Q100
CVBS_TXT
BC848B
100R
R112 R111
220R 1K
11
GND
GND
SVHS_Y
SVHS_C
SC2_IN_V
CVBS_IF
SC1_IN_V
C111
B_TXT
C112
100N
G_TXT
C113
100N
R_TXT
C114
100N
SC_B
C115
100N
SC_G
C116
GND
100N
SC_R
100N
R119
RESET
C117
220R
GND 100N
3
GND
GND
power on (trigger: +12V) switch on with RC (trigger: +5V)
3 3
# $
C125 C101 C102 C103 C127
R121 100U16V 100N 100N 100N 220P
22K
C119 C121
GND C135
390P 220N 1N5
C137
GND GND GND
22U50V
8
NC
61
NC
R117
22K 12
GND
70
C129
VOUT
72
VIN1
220N
C100 71
CIN
10N C130
C131 73
VIN2
74
VIN3
220N
C132
220N
75
VIN4
220N
79
FB_TXT FB1IN
1
B1/CB1IN
2
G1/Y1IN
3
R1/CR1IN
4
B2/CB2IN
5
G2/Y2IN
6
R2/CR2IN
C139 78
VREF
C123
47N 10U
17
C140
GND VGAV
C124
47N 10U 66
VRT
18
YCOEQ
15
RESQ
C118
R108
13
SCL5V SCL
100N 14
6 100R
SDA
R109
GND
SDA5V
100R
7
C133
63
XTAL2
62
XTAL1
3P3
Y100
63V 67
I2CSEL
C134
20.25MHz
16
TEST
3P3
GND
J100
GND
0R
R110
+5V
10K
GND
6
%
+3.3V
C104 C105 C106 C107 C108
100N 100N 100N 100N 100N
C136
390P
U100 GND
C145
100U16V
41
C7
42
C6
43
C5
44 VCLK_INV
C4
47
C3
48
C2
49
C1
50
C0
RG100
31 47R YUV7
Y7
32 YUV6
Y6
33 YUV5
Y5
34 YUV4
Y4
37 YUV3
Y3
38 YUV2
Y2
39 YUV1
Y1
40 YUV0
Y0
RG101
47R
VPC3230D
J102
27 VCLK_INV
LLC2
28
0R
LLC1
53 C143
INTLC
13 14
57 10P
VS
54 GND
AVO
56
MSY/HS
55
FSY/HC
R114
58
FPDAT
100R
R116
10K
15
60
CLK5
24
CLK20
GND
23
FFOE
22
FFRE
21
CIN
FFRSTW
20
FFWE VIN1
19
FFIE
VIN2
VIN3
VIN4
VOUT
RGB/
YCrCb
FB
RGB/
YCrCb
!
7
&
2 - 0
Chassis
L100
10uH
C109 C110 C128 C126
100N 100N 220P 100U16V
GND
C120 C122
220N 1N5
GND GND
L102
+3.3V
10uH
C144
17
100N
BK1608HM601
U101
L103
1 4
VCLK
2 5 C142
+3.3V
22P
C141 GND
100N
GND
GND
YUV[0..7]
YUV[0..7]
R113
O_HS
100R
R115
O_VS
10K
GND
Analog Adaptive Color Y Y 2D Scaler
Frontend Comb Decoder
PIP
Filter
Panorama
NTSC Cr Cr
Mode
Mixer
PAL
SECAM
AGC NTSC
Contrast
2×ADC PAL Cb Cb
Brightness
Saturation
Peaking
Tint
Y/G
Y
2
Analog I C Bus
Processing
Component
Matrix
U/B Cr
Front-End
Contrast
Saturation
V/R Cb
Brightness
Clock
Tint
4 x ADC Gen.
FB FB
VPC3230D
2
20.25 MHz I C Bus
@
L5A-26"...32"
Output
Y OUT
Formatter
CrCb
ITU-R 656 OUT
ITU-R 601
YCOE
Memory
FIFO
Control
CNTL
LL Clock
Sync
+
H Sync
Clock
Generation
V Sync
AV O