Grundig Toronto 26-7831 T Service Manual page 30

Tuner
Vorabversion
Preliminary Version
5V-VIF
R302 R303
6K8 2K2
C303
F6-01
10n
D300
BA591
R308
F6-02
2K2
T303
BC848B Q1-01
8
F301
8
K3958M
1
AIFP AIFP
2
AIFN
AIFN
R318
R317
L302
0R
NC
1u
C301
REF4MHZ
NC/100p
X300
4MHz XTAL
Option
F300
K9656M
R309
1 5
330R
SIF2
5V-VIF
C304
1n5
2 4
SIF1
C307
R336
220n
100K
R311
OUT2
4K7
C308
10n
5
VIF1
4
VIF2
C313
C316 C314
10n
C317
10n 470n
R320 390p
5K6
VCC3.3V-ST
5V-VIF
C300
CAN Tuner için
22p
R305
R304
NC/12K 12K*
R306
RFAGC3
10K
TAGC
RFAGC3
R310
C306
100K D301
4148 10u/16V
C305
470n
IC300
TDA9885
R312
9
100R
9
C318
SIF
100n
SCL-01 I2C-SCL-Tuner
R321 100R
SDA-01 I2C-SDA-Tuner
R322 100R
TOP TAGC VAGC VPLL
9 14 1 6 19
C AGC(neg)
C BL
TUNER AGC VIF-AGC RC VCO DIGITAL VCO CONTROL
VIF2 2
VIF-PLL
VIF1 1
SINGLE REFERENCE QSS MIXER
SIF2 24
INTERCARRIER MIXER
AND AM DEMODULATOR
SIF1 23
MAD
OUTPUT
2
SUPPLY SIF-AGC I C-BUS TRANSCEIVER
PORTS
C AGC
20 18 13 3 22 11 10
V P AGND n.c. O P 1 O P 2 SCL SDA
5V-VIF
L300 L301
4u7
1u
C311 C309 C328
C310
10u 100n 1u
220u/16V
Q2-01 T304
BC847B
C312
R313 R314
75R %1
47R
100n
C331
R316
R315
C330
75R %1
220R
NC
C315
NC R319
47R
100n
6
I2C-SCL-Tuner
5
I2C-SDA-Tuner
5
REF AFC
1 5 2 1
AFC DETECTOR
SOUND CARRIER
17 CVBS
TRAPS
4.5 to 6.5 MHz
TDA9885
TDA9886
8 AUD
AUDIO PROCESSING
DEEM
5
AND SWITCHES
AFD
6
NARROW-BAND
FM-PLL DEMODULATOR
7 12 4
DGND SIOMAD F M P L L
VCC5V
TV_CVBS+
TV_CVBS+
TV_CVBS-
TV_CVBS-
6