Tuner - Grundig Toronto 32-7830 T Service Manual

GRUNDIG Service
Hauptplatte / Main Board – Tuner
5
L601
4u7H/160mA
5V-IF
+
C608
C606
0.1uF
10uF/16V
GND
T602
R609
BC807-40
15R
R610
15R
T601
R607
5V-IF
BC858B
1K
R624
10K
R608
*
T600
BC847B
GND GND
R614
6.8K
D602
C609
10nF BA591
IF_TV
R615
2,2K
GND
L606
R637
51R
1.0uH/NC
GND
(1)
TOP TAGC VAGC VPLL
9 ( ) 8 14 (15) 1 6 1 ( ) 7 19 (21)
C AGC(neg)
C BL
TUNER AGC VIF-AGC
2 (31)
VIF2
VIF-PLL
1 (30)
VIF1
SINGLE REFERENCE QSS MIXER
24 (27)
INTERCARRIER MIXER
SIF2
AND AM DEMODULATOR
23 (26)
SIF1
OUTPUT
SUPPLY SIF-AGC
PORTS
C AGC
(6, 12, 13, 14, 17,
19, 25, 28, 29, 32)
13
20 (22) 18 (20) 3 (1)
V P AGND n.c. O P 1
6 7
TU302 GND
ENV57DD3H6F
Hybrid Tuner
5 6
R525
0R
5V-Tuner
L603
IC319
14
I2CSDA_5V
X X0
FB0603
X1
C629
15
I2CSCL_5V
Y
1uF
Y0
R740 1K
4
Z Y1
C639
1nF 8
Z0
VSS
Z1
GND 16
+5V VDD A
GND 7
VEE B
6
EN C
C495
0.1uF
M74HC4053_TSSOP16
A/D
GND
R618
220K
T603
BC847B
R617 C610
680K 10nF
R616
1K
GND
SAW600
GND
K9656M
IN OUT2
1 5
SAW
2 4
ING OUT1
GND
SAW601
K3958D
1 IN OUT2 5
SAW
2 4
ING OUT1
A/D
R638
5.6K
GND
(1) Not connected for TDA9885. REF AFC
1 5 1 ( ) 6 2
RC VCO DIGITAL VCO CONTROL AFC DETECTOR
SOUND CARRIER
TRAPS
4.5 to 6.5 MHz
TDA9885
TDA9886
AUDIO PROCESSING
MAD
NARROW-BAND
2
I C-BUS TRANSCEIVER
FM-PLL DEMODULATOR
11 (10) 10 (9)
22 (24) 7 (5) 12 (11)
O P 2 SCL SDA DGND SIOMAD
TU303
THOMSOND TT75407
5 6
GND
5V-Tuner
L333
IFD1
4.7uH/160mA
5V-IF
IFD2
1 2
IFAGC
IF_TV
+
C787
7
12
SDA5V
470uF/16V 470uF/16V
13
SDAT
Only for
2
PCB index XLB190R-8 > –
SCL5V
1
SCLT
5
RFAGC
3
RFMON
5V-IF
RFAGC
R575
11
10
I2CSDA_5V
10K
9
I2CSCL_5V
C624 C625
47pF 47pF
GND
GND_T
5V-OUT
L602
10uH/160mA
+
C615
R619 C607
0.1uF
10uF/25V
22K
GND
GND
X600
4MHz
GND
CVBS
IC600
TDA9886TS/V3
140mVrms
C612
C611
R633 R634
10nF 100R 100R
10nF
C631
10nF
C630
C617
390pF
470nF
R640
1k
14
GND
1 2 ( ) 3
6 5
R639
1k
(18) 17
CVBS
(7) 8
AUD
(3) 5
AND SWITCHES
DEEM
(4) 6
AFD
4 (2)
F M P L L
2 - 31
Chassis BL (LX prime IDTV)
$
TU301
UV1316/ADH4
GND
Analog Tuner
5 6
GND
5V-Tuner
C494
+
0.1uF
C492
GND
R613
1K
R630 100R
RF-AGC +
R631 100R
SDA5V
C623
C668
100nF/50V 47U/50V
R632 100R
SCL5V
C626
GND GND
47pF
GND
5V-IF
L604
+ 600R Bead 0603
C600
R621
0.1uF
C786 C619
12K
10uF/16V 10nF
GND GND GND
Only for PCB index
> – XLB190R-8
R623
RF-AGC
1K
R622 C620
+
100K 47uF/16V
+5V
GND
R840
0R
8
R605
4K7
5
SCL5V
SDA5V
6
T604
2N7002
+3.3V
R641
4
5V-IF
R642
10R
R645 0R C603
0.1uF
T606
TUNERGNDCUTOUT
BC848B
R644 0R C604 0.1uF
GND
C632
R643
NC
10K
R603 C605 0.1uF
820R
MONO
R604
C633
GND
10K
100pF
GND
4
7
IF_TV
RFAGC
I2CSDA_5V
I2CSCL_5V
+33V
+5V_SW
+5V_SW
R841
10K
R606
4K7
T605
2N7002
+3.3V
I2C_SCL
I2C_SDA
3
SIFP0
SIFM0
AUMONO