Y/C Processing - Grundig GT 2005 Service Manual

ST 03

Y/C Processing

VIDEO_A
SCL
SDA
VERT_DRIVE
+5V
C806
R800
4n7
1K
10%
5%
X7R
A
HORIZ
FLBACK
TR800
BC847B
CN800
6WAY_WIRE_HOLDER
2.5mm_PITCH
MOL
51052
R801 TR801
1
BC847
RED 100R
R802
5%
2
GREEN 100R
R803
5%
3
BLUE 100R
5%
4
CHR_GND
5
R804 R805
CHR_GND
18K 220R
5% 5%
6
DARKI
D804
LL4148
Stereo Pal Stereo
Table Sys.
Stereo Pal I Stereo Eire
B/G Secam LL
NF NF NF NF
SAW601
NF NF NF NF
D400
NF NF TPS 6.5MB NF
CT400
TPS 5.5MB TPS 6.0MB TPS 5.5MB TPS 6.0MB
CT401
SALCOMP SALCOMP SALCOMP SALCOMP
TUN600
1590R 1490R 1590R 1590R
NF NF NF NF
CF400
IC800 4 4 0 0 7 4 4 0 0 7 4 4 0 0 2 4 4 0 0 7
SAW600 G3270 J3252 K3261 J3252
–o–o– –o–o– 1N4148 –o–o–
D600
NF NF 10K NF
R461
680n 680n 100n 680n
C406
68R 68R 330R 68R
R412
STV8224 STV8224 STV8224A STV8224
IC400
2n2 2n2 47n 2n2
C417
100R 100R 1K 100R
R422
R407 NF NF NF 4K7
LNK504 –o–o– –o–o– –o–o– NF
GRUNDIG Service
Layout of the PCBs and Circuit Diagrams
+5V
C812 C811 R821 R822 R823 R824
10n 4u7 51K 47K 12K 4K7
10% 50V 5% 5% 5% 5%
X7R 20%
AE
R827
D801
33K
LL4148
5%
IB_SENSE
R836
C850
2M2
470n
10%
50V
5%
C841
MKT
39p
COG
5%
C840
CHR_GND
100n 5
10%
Z5U
R840
TABLE_CRT
5%
C807 C808 C809 C810
R841
10n 33u 100n 82n
1K
10% 16V Z5U 63V
5%
X7R 20% 10% 10%
AE MKT
R845
470R
CHR_GND
5%
+5V
R810 D802
R806 R808
680R LL4148
680R 680R
5%
5% 5%
TR802
BC847
R815 R813 C802
R811
TR803
100K 47K 1n5
33K
BC847
5% 5% 63V
5%
10%
R816
MKT
10M
5%
C801 C803
R807 R809 R817 100n 4n7
R812
220R 220R 100K 63V 63V
220R
5% 5% 5% 10% 10%
5%
MKT MKT
CHR_GND
ST 03
R825 R826
4K7 1M
5% 5%
+5V
VIDEO_1
C813
100n
R835
63V
270K
10%
5% R832
MKT
1R
TEXT
1/4W
5%
R828 MFF
TABLE_SYS
1K SAFE
5%
1 40
TEXT
A.C.C VIDEO 1
2 39
VIDEO IN 2 CHROMA PL1
R819
3 38
CURRENT REF IDENT
330R
4 37
CLOCK I2C R-Y O/P
5% 5 36
C823
DATA I2C B-Y O/P
100nF
R820 6 35
50V
VERT RAMP +5V
330R 10%
7 34
VERT DRIVE SUPPLY GND
5% MKT
8 33
E/W DRIVE XTAL 17.7
9 32
XT800
BEAM LIMIT XTAL 14.3
17.7MHz
10 31
BEAM L SANDCASTLE
11 30
SECAM CAL SYS SELECT
12 29
HORIZ Y 1 O/P
13 28
FLYBACK I/P Y 1 CLAMP
14 27
H LOOP 2 R-Y I/P
15 26
H LOOP 1 B-Y I/P
16 25
SIG GND Y2 I/P C861
17 24 100p
R O/P RED I/P 5%
18 23 COG
C860
G O/P GREEN I/P
100p
19 22
5%
B O/P BLUE I/P
C804 COG
20 21
100n
AUTO GREY FAST S/W
63V
10%
MKT
10
C818 C817
100n 100n
10% 10%
C805
X7R X7R
100p
5%
COG
4 - 15 GRUNDIG Service
C828
22n
10%
Z5U
C814
220u
6.3V
20%
AE
6
C815
47n
10%
R829 C830 +5VA
7
47K 100n
Z5U
5% 10%
Z5U
1
CK
C821 2
C819
3n9 LNK801 VDD
22p
10% LINK 3
PED 5%
X7R VSS
COG
4
NF
SC
5
SS
6
9
IN1B
7
OUT1
8
C824
EXT1
100n
C825
10%
100n
X7R
10%
C820
X7R
47n 8
C822 C826 C827
10%
100n 4u7 120p
Z5U
10% 50V 5%
Z5U 20% COG
AE
CHR_GND
C816
100n
10%
X7R
RED_T
GREEN_T
BLUE_T
BL_T
Layout of the PCBs and Circuit Diagrams
Y/C
PROCESSING
+5V
C831 C832 C833 R831
1u 1u 100n 47R
50V 50V 63V 1/2W
20% 20% 10% 5%
AE AE MKT CF
16
BIAS
15
R830
IN1A
68K
14
5%
IN2A
13
VDD
12
VSS
11
IN2B
10
OUT2
9
EXT2
LNK800
LINK
NF
C834 C835 C836
10n 33u 10n
10% 16V 10%
X7R 20% X7R
AE
4 - 16