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GRUNDIG Service
Chassis – COFDM Demodulator
3V3A_DIG_FE
GND
GND
GND
C129
C130
GND
82pF
82pF
C131
IFD1
L105
1nF
C132
470nH
IFD2
GND
+5V
1nF
3V3A_DIG_FE
C133
R129
R130
4.7K
4.7K
GND
100nF
R131
SDAT
100R
SCLT
100R
R133
VCC3.3V_D
L106
60R/100Mhz
C137
L107
10uF
60R/100Mhz
GND
power on (trigger: +12V)
3
7
GND
C126
47pF
X100
R124
20.48MHz
100R
R125
2.2M
1V2D_DIG_FE
3V3D_DIG_FE
1V2A_DIG_FE
GND GND
GND
49
AINP_Q
50
AINM_Q
51
AVDD
52
AVSS
53
GUARD_Q
54
DAREFP
C128
55
DAREFM
100nF
COFDM Demodulator
56
GUARD_I
57
AINM_I
CXD1976
58
AIN_I
59
AVSS
60
AVDD
61
REFIN
62
REFOUT
63
TUNERDAT
64
TUNERCLK
GND
1V2D_DIG_FE
R134
IFAGC
C135
3
1K
C143
470nF
NC
GND
GND
VCC1.2V_D
3V3A_DIG_FE
L108
C134
C136
60R/100Mhz
100nF
1uF
3V3D_DIG_FE
GND
L109
C138
C139
C140
C141
60R/100Mhz
1uF
100nF
100nF
100nF
294126R
GND
!
C127
47pF
R126
GND
3V3D_DIG_FE
10k
1V2D_DIG_FE
GND GND
GND
GND
IC102
CXD1968BR
32
TMS
31
TDI
30
TDO
29
TCLK
28
CVSS
27
CVDD
26
SDA
25
SCL
24
DVDD
23
DVSS
22
TSDATA7
21
TSDATA6
20
TSDATA5
19
TSDATA4
18
TSDATA3
17
TSDATA2
GND
GND
1V2D_DIG_FE
3V3D_DIG_FE
R135
4*47R
TS_CLK
1
2
TS_VALID
3
4
TS_START
5
6
7
8
RESET
1V2A_DIG_FE
C142
100nF
GND
1V2D_DIG_FE
C148
C147
C146
C145
C144
100nF
100nF
100nF
100nF
1uF
GND
@
2 -
R127 10k
GND
GND
1V2D_DIG_FE
SDA_MD
SDA_COFDM
7
SCL_MD
SCL_COFDM
3V3D_DIG_FE
GND
4*47R
R128
TS_DATA7
1
2
TS_DATA6
3
4
TS_DATA5
5
6
TS_DATA4
7
8
4*47R
R132
TS_DATA3
1
2
TS_DATA2
3
4
TS_DATA1
5
6
TS_DATA0
7
8
TS_DATA[0..7]
TS_DATA[0..7]
14
13
TS_CLK
12
TS_VALID
TS_START
11
#
$
Chassis DH
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