Grundig 26-3821, Service Manual

Page: 16 / 46

GR
UNDIG Ser
vice
Chassis SC
2 -
HDMI_SOURCE_SEL
RX1P
RX0P
RXCM
RXCP
RX1M
RX2M
RX0M
HP_RST
RX2P
PWR0
HOT_PLUG_3
D307
ZMM55C9V1
R344
10K
VCC
8
SDA
5
SCL
6
WP
7
VSS
4
A0
1
A1
2
A2
3
U300
24C02
C307
220pF/25V
R
31
6
10
K
R328
100R
R326
10R
R338
10K
Q305
2N7002K
R335
5K6
D302
BAV70
R343
0R
R
31
5
10
K
C303
0.1UF/25V
R327
100R
PWR0
HDMI_SCL
HDMI_SOURCE_SEL
HDMI_SDA
HP_RST
HOT_PLUG_3
RX0M
RX0P
RX1M
RX1P
RX2M
RX2P
RXCM
RXCP
P5V_STBY
VIDEO IN (HDMI)
Q309
BC848B
RX2+
1
GND2
2
RX2-
3
RX1+
4
GND1
5
RX1-
6
RX0+
7
GND0
8
RX0-
9
CLK+
10
GND_CLK
11
CLK-
12
CEC
13
N.C.
14
SCL
15
SDA
16
CEC_GND
17
5V
18
HP_DETECT
19
20 21
22 23
S301
RX2+
1
GND2
2
RX2-
3
RX1+
4
GND1
5
RX1-
6
RX0+
7
GND0
8
RX0-
9
CLK+
10
GND_CLK
11
CLK-
12
CEC
13
N.C.
14
SCL
15
SDA
16
CEC_GND
17
5V
18
HP_DETECT
19
20 21
22 23
S303
N
C
1
N
C
2
G
N
D
3
N
C
4
N
C
5
V
C
C
6
N
C
7
N
C
8
G
N
D
9
N
C
10
N
C
11
V
C
C
12
N
C
13
N
C
14
G
N
D
15
V
S
A
D
J
16
Y4
17
Z4
18
VCC
19
Y3
20
Z3
21
GND
22
Y2
23
Z2
24
VCC
25
Y1
26
Z1
27
GND
28
SCL_SINK
29
SDA_SINK
30
HPD_SINK
31
S1
32
S
2
33
E
Q
34
H
P
D
1
35
S
D
A
1
36
S
C
L1
37
B
11
38
A
11
39
V
C
C
40
B
12
41
A
12
42
G
N
D
43
B
13
44
A
13
45
V
C
C
46
B
14
47
A
14
48
VDD
49
HPD2
50
SDA2
51
SCL2
52
B21
53
A21
54
VCC
55
B22
56
A22
57
GND
58
B23
59
A23
60
VCC
61
B24
62
A24
63
NC
64
U302
TMDS251
1st HDMI
2nd HDMI
R
32
2
47
K
R
32
9
47
K
R
36
3
47
K
R
36
4
47
K
R
31
7
4K
7
R
31
9
4K
7
R
31
4
1K
/N
C
R307
4K02 %10
R
35
9
4K
7
R
36
0
0R
/N
C
R
35
8
4K
7
HDMI_3V3
HDMI_3V3
HDMI_3V3
HDMI_3V3
HDMI_3V3 HDMI_3V3
HDMI_3V3
HDMI_3V3
HDMI_3V3
C312
0.1UF/25V
C313
0.1UF/25V
C314
0.1UF/25V
C315
0.1UF/25V
HDMI_3V3
P5V_STBY
P5V_STBY
P5V_STBY
HDMI_3V3
L4_D3V3
H
D
M
I_
5V
R
30
8
1K
/N
C
R
36
1
1K
/N
C
D305
BAV70
2HDMI_5V
2HDMI_5V
1HDMI_5V
1HDMI_5V
CEC
CEC
C316
47UF/16V
L302 BEAD
L4_D3V3
R362 4K7
HDMI_3V3
R313 100R
R356
100R
1HDMI_5V
VCC
8
SDA
5
SCL
6
WP
7
VSS
4
A0
1
A1
2
A2
3
U303
24C02
R
36
6
10
K
D306
BAV70
R
36
5
10
K
C317
0.1UF/25V
P5V_STBY
R367 100R
R368 100R
2HDMI_5V
1HDMI_SCL
1HDMI_SDA
1HDMI_SCL
1HDMI_SDA
2HDMI_SCL
2HDMI_SDA
2HDMI_SCL
2HDMI_SDA
1st HDMI
2nd HDMI
R371
1K
R369
1K
Q302
BC848B
Q303
BC848B
Q306
BC848B
R373
1K
R370
1K
R372
10K
A5V
R357
10K/NC
P5V_STBY
L303 BEAD
3V3_ASTBY
SCL_SINK
SDA_SINK
HPD_SINK
S1
S2
Control
Logic
Y4
Z4
VSADJ
TMDS
Driver
TMDS
Driver
TMDS
Driver
TMDS
Driver
EQ
VDD
TMDS
Rx
TMDS
Rx
TMDS
Rx
TMDS
Rx
TMDS
Rx
TMDS
Rx
TMDS
Rx
TMDS
Rx
A14
B14
A13
B13
A12
B12
A11
B11
A24
B24
A23
B23
A22
B22
A21
B21
HPD1
HPD2
SCL1
SDA1
SCL2
SDA2
Y3
Z3
Y1
Z1
Y2
Z2
HPD/DDC
TMDS251
Chassis - HDMI