Tuner - Grundig Vision 7 Service Manual

Chassis - Tuner
TUN600
THOMPSON Tuner Option
DTT75407
15
14
13
12
5V_SW
R603 15R/603
Q600
BC857BL
R604 15R/603
C661
100nF/25V
Q601
BC857BL
C610
5V_SW
1uF/10V
R608
10k/603
Q602
ANTPOWER
BC847BL
R610
R612
C628
R629 NC(603) SAW600
10nF/50V
K9656M
L607
1
IN1
NC(1uH/805_ALT)
5V_IFDEMOD
2
IN2
5V_IFDEMOD
R632
R634
2.7k
D600
6.8k
3
GND
BA591
Q606 PORT
R637
SAW601
2.7k
K3958D R666
BC847BL
680k/603
U601
1
VIF1 SIF2
2
VIF2 SIF1
AN/DIG R676100R/603
3
OP1 OP2
R667 5.6k/603
C646 10nF 4
FMPLL AFC
C645 390pF/50V
C647 10nF 5
DEEM VP
C663 470nF/10V 6
AFD VPLL
7
DGND AGND
C667
AUMONO
R647 10k 8
AUD CVBS
100nF 9
TOP VAGC
SDA5V
C659 R648 100R R644 10
SDA REF
10k
100pF
SCL5V 100R
R642 11
SCL TAGC
SIF_OUT
R646 0R 12
SIOMAD N.C.
TDA9886TS
TUN601
1
APW
7
5V_TUNER
VCC
2
RAG
AS
3
CAS
SCL_T
4
SCL
SDA_T
5
SDA
1
6
6
GPO
8
IFA
IF_AGC
9
IAG
10
IF2
11
IF1
5V_TUNER
L603
5V_SW
10uH/805
C611 C612 C671
470uF/10V
470uF/10V
100nF/25V
100R/603 SDA_TUNER
100R/603 SCL_TUNER
2 1
5V_SW
R671
1k
5
OUT2
SCL5V
1
Q604
2N7002/SOT
4
5V_SW
OUT1
R672
1k
SDA5V
Q605
2N7002/SOT
2
SCL5V
SDA5V
5V_IFDEMOD
24
R636
23
22k
R665
PORT
22
220k/603
21 C639
5V_IFDEMOD 5V_IF
10nF
L610
20
C643 1.5nF/50V 600R Bead 0603
19 C638 C644 C664
100nF/25V 10uF/25V
220nF/16V
18
R638 330R/603
17 R641 1k
5V_IFDEMOD
CVBS_RF
16 C640 470nF/10V
Y601
R663
15
12k
C656 22pF
R674 1k
14 4MHz
13
R639 C665
100k/603 47uF/16V
TU601
ENV57K23G3F
1
R654
0R/603
AGC_AN
R614 100R
5V_TUNER
2
6
C614
RFAGC
100nF/50V R613
1k/603
33V
SCL_COFDM
1
SCL5V
R675
RFAGC_HYBR
RFAGC
C670
1nF/50V
3V3_SW
SCL_MAIN
3
C666
10nF
4
SDA_MAIN
R677 100R SCL_TUNER
VIF2
R678 100R SDA_TUNER
VIF1
SIF2
SIF1
5V_SW
L609
NC(1uH/805)
R643
C648
NC(10R/603)
NC(100nF)
C650 0R/CAP
SIF_OUT
Q607
R649 0R R650
0R
C657
AGC_AN
R651
22pF
NC(820R)
C658
R653 0R
3 4
2
5V_SW 5V_IF
L608
600R Bead 0603
C637
100uF/16V
RFAGC
C672
S1 11
47pF
RFAGC_HYBR
0R
R679
5V_IF
C668
S2 10
U602 100nF
1 16
2Y1 VCC
R628 100R SCL_TUNER
2 15
2Y0 2Z
R627 100R SDA_TUNER
3 14
3Y1 1Z
1k
SDA_COFDM
4 13
3Z 1Y1
SDA5V
5 12
3Y0 1Y0
R673 10k
6 11
5V_IF
E S1 2
7 10
VEE S2
R635 100R AN/DIG
8 9
GND S3
S3 9
On digital mode only COFDM accesses tuner
74HC4053
the AN/DIG signal is 0V
On analog mode COFDM sleeps,
AN/DIG is 3v3
TOP TAGC VAGC VPLL
9 14 1 6 19
C AGC(neg)
C BL
TUNER AGC VIF-AGC RC VCO DIGITAL VCO CONTROL
2
VIF-PLL
1
TDA9885
TDA9886
SINGLE REFERENCE QSS MIXER
24
INTERCARRIER MIXER
AND AM DEMODULATOR
23
MAD
OUTPUT
2
SUPPLY SIF-AGC I C-BUS TRANSCEIVER
PORTS
C AGC
13 11 10
20 18 3 22 7
V P AGND n.c. O P 1 O P 2 SCL SDA DGND
Vorabversion
C651
SIF_P
100nF
Preliminary Version
100nF
SIF_M
6
E V
CC
6 16
74HC4053
13 1Y1
LOGIC
LEVEL DECODER 12 1Y0
CONVERSION
14 1Z
1 2Y1
2 2Y0
15 2Z
3 3Y1
5 3Y0
4 3Z
8 7
GND V
EE
REF AFC
1 5 2 1
AFC DETECTOR
SOUND CARRIER
17 CVBS
TRAPS
4.5 to 6.5 MHz
8 AUD
AUDIO PROCESSING
5 DEEM
AND SWITCHES
AFD
6
NARROW-BAND
FM-PLL DEMODULATOR
4
12
SIOMAD F M P L L