Grundig davio GBF6300 Service Manual page 13

Hauptplatte / Main Board – Tuner
3
2
TU100
ENV57K23G3F
Analog Tuner
READ is 0XC1
WRITE is 0XC0
L119
C195
4u7H/160mA
R122
100nF/50V
100
+5V
2 3
+
IF_TV
C200 C201
33uF/10V 0.1uF R208 100R
SDA_5V
SCL_5V
R209 100R
RF-AGC
+
C202 C203 C204
C205
47pF 47pF 47pF
47uF/16V
BG/DK I BG/DK/I/L/L'
SAW100 - - K9656M
SAW101 K2982M J1956M K3953M
IC110 TDA9885TS/V3 TDA9885TS/V3 TDA9886TS/V3
C215
CVBS2_INP
C222
CVBS2_INM
4 5
R201
4K7
T200
BC847B
R233
220k
R234
C234
R203 680k 10nF
15K
R204
+30V GND
1K
1 IN OUT2 5
SAW
D105
C198
10nF BA591
2 4
ING OUT1
SAW100
R210
K9656M
4,7K
SAW101
K2982M (K3953M)
1 OUT2 5
IN
SAW
R214 L120
*
1.0uH/NC 2 4
ING OUT1
R219
5.6K
C214 20p
100n
L122
3u3H 0805
C217 C218
330p 330p
100n
2 (31)
VIF2
1 (30)
VIF1
24 (27)
SIF2
23 (26)
SIF1
5V-IF +5V
L118
4u7H/160mA
+
C192
C193 R199
0.1uF
33uF/10V 12K
R232
22k
D106
4148_SOT23
X100
RF-AGC
4MHz
R200
1K
R202
100K
4
R206
100
IC110
TDA9885(6)TS/V3
READ is 0X87
WRITE is 0X86
R213
100
R216 R217
100R 100R
3
C207
10nF
C208
10nF SDA_5V
SDA_5V
C212
C211 SCL_5V
SCL_5V
470nF
390pF
2
C213
1uF
5
C224
R133
+5V
10
100n
R220
500mVrms
10k
C216
R222
T110
47uF/16V
TV_CVBS+
1k
BC858B
(1) (1) Not connected for TDA9885.
TOP TAGC VAGC VPLL
9 ( ) 8 14 (15) 1 6 1 ( ) 7 19 (21)
C AGC(neg)
C BL
TUNER AGC VIF-AGC RC VCO DIGITAL VCO CONTROL
VIF-PLL
TDA9885
TDA9886
SINGLE REFERENCE QSS MIXER
INTERCARRIER MIXER
AND AM DEMODULATOR
MAD
OUTPUT
SUPPLY SIF-AGC I 2 C-BUS TRANSCEIVER
PORTS
C AGC
(6, 12, 13, 14, 17,
19, 25, 28, 29, 32)
13 11 (10) 10 (9)
20 (22) 18 (20) 3 (1) 22 (24) 7 (5)
V P AGND n.c. O P 1 O P 2 SCL SDA DGND
5V-IF
T108
BC847B
R207
TV_CVBS+
75R
R211
R212
2k2 75
R112
+5V
10
C223
C206 NC
100n
1
T109 L121
R215
BC847B
SC_CVBS_OUT
75R 0
C209 C210
R218
2k2
* 47p
MONO_AUD
TUNER GND CUTOUT
R221 100
SC_LO
SC_RO
R223 100
C219 C220 C221
1n 1n 1n
REF AFC
1 5 1 ( ) 6 2 1 2 ( ) 3
AFC DETECTOR
SOUND CARRIER
(18) 17
TRAPS CVBS
4.5 to 6.5 MHz
(7) 8
AUD
AUDIO PROCESSING
(3) 5
AND SWITCHES
DEEM
(4) 6
AFD
NARROW-BAND
FM-PLL DEMODULATOR
4 (2)
12 (11)
SIOMAD F M P L L