Grundig 26-3821, Руководство по обслуживанию

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GRUNDIG Service Chassis SC
2 - 0
IIC1_SCL
IIC1_SDA
R709 100R
C702
0.1UF/50V
R708 100R
IIC1_SCL
IIC1_SDA
VCC_33V
L330
4.7uH/160mA
C493
0.1uF
C514
47pF
C513
47pF
+
C
49
0
47
0u
F
/2
5V
LE
S
R
A5V
A5V
T331
BC807-40
R567
15R
T316
BC857B
R568
15R
ANTPOWER
T309
BC847B
R572
1K
L335
FB0603
Hybrid Tuner
R
52
1
0R
R
52
8
0R
C522
1uF
C495 0.1uF
I2
C
S
D
A
_5
V
I2
C
S
C
L_
5V
IIC1_SDA
IIC1_SCL
RFAGC
C523
1nF
C512
47pF
IFAGC
IFD2
IFD1
SDAT
SCLT
RFMON
IF_TV
TUNER_5V
R569
10K
3
10 11
R740
1K
A
P
W
1
R
A
G
2
C
A
S
3
S
C
L
4
S
D
A
5
33
V
(
4M
H
z)
6
5V
7
IF
A
8
IA
G
9
IF
2
10
IF
1
11
G
N
D
12
G
N
D
13
G
N
D
14
G
N
D
15
TU303
THOMSON DTT75407
R
74
7
0R
R
74
6
0R
3 1 2
13
A5V
12
2
T
H
O
M
S
O
N
T
U
N
E
R
O
P
T
IO
N
0 Analog
1 Digital
1 Enable
0 Disable
3V3A_DIG_FE
3V3D_DIG_FE
1V2D_DIG_FE
C648
100N
C649
100N
C651
100N C650
100N
C652
100N
C655
100N
C657
100N
C654
100N
C656
100N C658
100N
L371
1uH
L372
FB
1uH
L370
L373
FB
1V2A_DIG_FE
C660
100N C659
100N
FROM MPEG DECODER EMM2LL
CXD1976
COFDM Demodulator
R725
1K
R721
4K7
R722
4K7
R724
100R
R723
100R
C662
1N
C709
1N
C665
*
C664
470N
R
F
_I
F
A
G
C
_Q
1
IF
A
G
C
_I
2
C
V
S
S
3
C
V
D
D
4
IN
T
R
P
T
N
5
R
E
S
E
T
N
6
T
S
E
R
R
7
T
S
S
Y
N
C
8
T
S
V
A
L
ID
9
T
S
C
LK
10
D
V
S
S
11
D
V
D
D
12
T
S
D
A
T
A
0
13
T
S
D
A
T
A
1
14
C
V
D
D
15
C
V
S
S
16
TSDATA2
17
TSDATA3
18
TSDATA4
19
TSDATA5
20
TSDATA6
21
TSDATA7
22
DVSS
23
DVDD
24
SCL
25
SDA
26
CVDD
27
CVSS
28
TCLK
29
TDO
30
TDI
31
TMS
32
T
E
S
T
M
O
D
E
33
T
R
S
T
N
34
A
0
35
D
V
D
D
36
D
V
S
S
37
C
V
S
S
38
C
V
D
D
39
O
S
C
N
40
X
V
D
D
41
X
T
A
L
I
42
X
T
A
L
O
43
X
V
S
S
44
D
IV
D
D
45
D
IV
S
S
46
P
A
D
V
S
S
47
P
A
D
V
D
D
48
AINP_Q
49
AINM_Q
50
AVDD
51
AVSS
52
GUARD_Q
53
DAREFP
54
DAREFM
55
GUARD_I
56
AINM_I
57
AIN_I
58
AVSS
59
AVDD
60
REFIN
61
REFOUT
62
TUNERDAT
63
TUNERCLK
64
U700
CXD1968
R733 100R
R734 100R
X700
20.48MHz
R739
100R
R738
2M2
C666
33p
C667
33p
R736
10k
R735
10k
C663
100N
C645
100N
1V2A_DIG_FE
1V2D_DIG_FE
1V2D_DIG_FE
1V2D_DIG_FE
1V2D_DIG_FE
1V2D_DIG_FE
3V3D_DIG_FE
3V3D_DIG_FE
3V3D_DIG_FE
3V3A_DIG_FE
3V3A_DIG_FE
3V3A_DIG_FE
R726
*
TS_DATA[0..7]
TS_DATA0
TS_DATA1
TS_DATA2
TS_DATA3
TS_DATA4
TS_DATA5
TS_DATA6
TS_DATA7
T
S
_D
A
T
A
[0
..
7]
TS_ERROR
TS_CLK
TS_CLK
TS_VALID
TS_VALID
TS_START
TS_START
RESET_COFDM
IFAGC
SDA_MD
SCL_MD
SDAT
SCLT
IFD1
IFD2
1
3
5
7 8
6
4
2
R732 47R
1
3
5
7 8
6
4
2
R731 47R
1
3
5
7 8
6
4
2
R730 47R
P5V
1V2_ASTBY
SDA_MD
SCL_MD
+
C623
10uF/16V
3V3_ASTBY
From MPEG
To MPEG
TUNER_CVBS
5V-IF
T325
BC857B
T321
BC848B
R542
1K
R543
3K6
R553
1K8
R566
270R
R545
390R
R549
330
R551
39
C521
100
C520
180
R550
68
T322
BC848B
R546
2K2
R548
62R
C509
82
C508
180
R552
330R
5V-IF
R547
0R
C507
100N
IF_VID_OUT
2 4 6 0 0
1 3
L332
814111136000
T330
BC848B
R565
47K
C518
10N
C478
330pF/NC
L328
0R/0805
C477
330pF/NC
GR_DELAY
R678
680R
R687
470R
R688
1K
IF_VID_OUT 1Vpp
2Vpp
R710 4K7
+
C701 10UF/50V
AGC_OUT
R711 0R/NC
9
AV1_TUN_CVBS
R707
150R
R701
3K9
R706
150R
5V-IF
R705
1K8
SCART_VOUT
R700
680R
R702
75R
Q700
BC848B
Q702
BC848B
Q701
BC857B
A
G
C
T
U
A
S
S
C
L
S
D
A
N
C
V
S
7
N
C
V
T
N
C
IF
1
G
14
G
15
G
13
G
12
TU500 ENV57K23G3F
R
59
2
0R
1
R
F
A
G
C
2 6
TUNER_5V
8 9 10 11
R
59
3
0R
IF
_T
V
A
N
A
L
O
G
O
N
L
Y
T
U
N
E
R
O
P
T
IO
N
IF_A/D_5V
A5V
R589
4K7
Q506
BC848B
Q505
BC848B
R591
100R
R590
100R
IF_A/D
R588
4K7
IF_A/D_5V
0 Analog
1 Digital
TUNER_5V
3V3D_DIG_FE
AGC_OUT
IF_VID_OUT
S
IF
O
U
T
R754
100R
L700
10uH/160mA
R749
NC
+
C706
10uF/25V
R756
1k
C708
10nF
R
7
4
4
3
3
0
R
C722
NC
C
7
1
5
2
2
p
F
SAW
ING 2
OUT1
4
G
N
D
3
OUT2
5 IN 1
SAW700
K9656M
C
7
1
2
2
2
0
n
F
C717
10nF
D
G
N
D
7
T
O
P
9
V
IF
1
1
V
IF
2
2
R
E
F
15
N
C
(5
)/
V
A
G
C
(6
)
16
D
E
E
M
5
S
C
L
11
O
U
T
1
3
N
C
13
A
U
D
_
O
U
T
8
S
D
A
10
F
M
P
LL
4
T
A
G
C
14
A
F
D
6
S
IO
M
A
D
12
C
V
B
S
17
A
G
N
D
18
V
P
L
L
19
V
P
P
20
A
F
C
21
O
U
T
2
22
S
IF
1
23
S
IF
2
24
IC700
TDA9886TS/V3
R752
10R
R748
51R
R720
22K
R743
6.8K
R757
820R
R742
100K
+
C710
47uF/16V
C
7
1
1
1
.5
nF
R755
0R
R745
2,2K
D700
BA591
R741
1K
C721
0.1uF
T701
BC848B
L702
1.0uH/NC
R727
12K
C719
390pF
C705
0.1uF
R729
680K
C714
10nF
C718
10nF
C720
470nF
R750
5.6K
C716
10nF
C
7
1
3
4
7
0
n
F
R737
1K
SAW
ING 2
OUT1
4
G
N
D
3
OUT2
5
IN 1
SAW701
K3958D
R751
1k
T700
BC847B
R728
220K
R753
100R
SIF_OUT
5V-IF 5V-OUT
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
5V-IF
GND
Reserve this circuit for SIF OUT
140mVrms
GND
IF_TV
C707
10nF
L701
600R Bead 0603
C704
0.1uF
GND GND
X701
4MHz
SIF_OUT
II
C
1_
S
C
L
II
C
1_
S
D
A
IF
_P
O
R
T
A5V
TU700
NXP TD1318AF
7
5
4
1 2 3 4 5
R
71
8
0R
IF_TV
7
R719 0R
R
70
3
0R
IFAGC
11
10
6
8 9
A
P
W
1
R
A
G
2
C
A
S
3
S
C
L
4
S
D
A
5
IF
A
6
5V
7
IA
G
8
33
V
9
IF
2
10
IF
1
11
G
N
D
15
G
N
D
14
G
N
D
13
G
N
D
12
G
N
D
16
TU701
SAMSUNG
DTOS403PH172A
9
6
+
C700
100uF/16V
8
1N4148-SOT23
D701
R760
22K
C723
100nF
R
7
5
8
2
2
K
AFT_OUT R759 0R
AFT_OUT
1B
1
1C
2
2B
3
2C
4
3B
5
3C
6
4B
7
4C
8
GND
9
4A
10
3A
11
2A
12
1A
13
S
14
OE_N
15
VDD
16
IC319
STMAV340
R713 NC
R715NC
TUNER_CVBS
D_CVBS_IN
AV1_TUN_CVBS
R714
75R
AV1_TUN_CVBS
AV1_TUN_CVBS
D_CVBS_IN
R712NC
R716NC
I2CSDA_5V
I2CSCL_5V
T
U
N
_
A
G
C
TUN_AGC
IIC1_SCL
IIC1_SDA
RFAGC
TUNER_CVBS
R717 NC
R761NC
AV1_TUN_CVBS
I2CSDA_5V
I2CSCL_5V
SDAT
SCLT
D_CVBS_IN
R762NC
R763
100R
R764
0R
470nH
L374
C647
82p
C646
82p
R544
2K2
R626
390
R625
39
R627100R
R628 100R
R629 4K7
R630 4K7
A5V
5 4
L703
600R Bead 0603
C703
100N
R765
0R/NC
C724
330pF/NC
STMAV340
Flow Cont rol
A
A
A
A
1B
1C
2B
2C
3B
3C
4B
4C
OE_N
1
2
3
4
S
FFT Window
Position
Zero IF, Low IF
or High IF Input
Device Configuration
2K/8K FFT
Channel
Estimation &
Correction
MPEG2-TS
Interfaces
(Parallel &
Serial)
Power
Estimation
(AGC)
Power
Estimation
(AGC)
TPS Cell Decode & Frame
Synchronization
Symbol
deinterleave,
Demapper,
Bit deinterleavel
10/12-bit
IF AGC
PWM
10/12-bit
IF AGC
PWM
Pilot
Processing
Hi Priority/
Lo Priority
Stream Select
IFAGC_I
I 2 C Interface
and
Quiet I 2 C
Configuration
and Debug/
Monitor
Registers
Clock & Test,
JTAG
AINP_I
A/D
10-bit
A/D
10-bit
Forward Error
Correction ("FEC")
CXD1968AR COFDM Demodulator
SDA SCL
XTAL
I
XTAL
O
RESET
N
TM
S
TC
K
TD
I
TD
O
TRST
N
INTRPT
N
TUNERDAT
Quiet I 2 C
10-bit RF
AGC PWM &
GPO
Symbol
Resampling
ACI & CCI
Rejection &
Digital AGC
Carrier
Offset
Timing
Offset
Viterbi Decoder,
Byte Deinterleaver,
RS Decoder,
Energy Dispersal
Transport
Stream
Smoothing
Buffer
TESTMODE
TUNERCLK
Time, Frequency and Symbol
Synchronization
IF to Baseband Conversion
DC Offset Correction
I/Q Phase Offset Correction
RF_IFAGC_Q
Auto
Recovery
Acquisition
Controller
AINM_I
AINP_Q
AINM_Q
OSCE
N
OSC, PLL &
Clock
Generator
ADC & Logic Clocks
BER
Measurement
Data
20.48MHz Crystal
or 4 to 20MHz Tuner
Crystal Reference Input
ZIF Enable
Impulse
Noise
Canceller
TSDATA[7:0]
TSVALID
TSCLK
TSSYNC
TSERR
CXD1968AR
DIGITAL VCO CONTROL AFC DETECTOR
RC VCO
VIF-PLL
VIF-AGC TUNER AGC
SUPPLY SIF-AGC
AUDIO PROCESSING
AND SWITCHES
NARROW-BAND
FM-PLL DEMODULATOR
SINGLE REFERENCE QSS MIXER
INTERCARRIER MIXER
AND AM DEMODULATOR
SOUND CARRIER
TRAPS
4.5 to 6.5 MHz
TAGC
CAGC(neg)
CBL
VAGC TOP
14
VPLL
19 1 2 5 1 6 1 9
4 10 11 12 18 20
2
1
17
8
5
6
REF AFC
AUD
CVBS
SIOMAD SDA SCL
MAD
VP
CAGC
13
n.c. AGND
7
DGND
OUTPUT
PORTS
I
2
C-BUS TRANSCEIVER
22 3
L L P M F 2 P O 1 P O
DEEM
AFD
VIF2
VIF1
24
23
SIF2
SIF1
TDA9885
TDA9886
13
12
15 14
#
@
@
$ %
12
Chassis - Tuner