Power Supply; Tuner - Grundig 32 GLX 6052 Service Manual

GRUNDIG Service
Chassisplatte – Netzteil / Chassis Board – Power Supply
VCC3.3V-ST
IC 900
L904
6
+5V2_STBY EN
120R/100MHz
TP39
5
VINA
C901
4
VINB
10uF / 10V
ST1S06PUR
VCC1.2V-ST
+3.3V_STBY
450mA
L909
FB
IC901 +1.2V_STBY
3 2
VIN VOUT
TP120
C915
D500 1
ADJ
S2A
1uF
C918 C907
NCP1117DTARK
100n F
10uF 6.3V
X5R
Pd=0.6W
Thermal pad required
VCC1.2V-ST
IC904
+5V2_STBY
L912
R933
6 1
EN FB
120R/100MHz 2K
TP144
5 2
VINA GND
C921 L914
4 3
VINB SW
10uF / 10V
3u3
R932
ST1S06PUR
2K
1 4
9 0
Chassisplatte / Chassis Board – Tuner
TU301
LG-TDTC-G4XXD
L103
60R/100Mhz
VCC5V L500
10uH C509
R512
+
0R
C513 C511
100n
-
100n
100UF/16V
R515
RF_AGC_A
R516
1K
100R
R517
100R
C514 C515 C516
1nF 33pF 33pF
R900 R913
1
FB
84.5K 1%
0R
2
GND
L907 L906
3
SW
120R/100MHz
3u3
NR4018T3R3M
R901
C902 C903 C904
26.2K %1
3x 10uF 6.3V X5R
VCC2.5V
T901
DMN3150L
3 2
+3.3V_STBY VCC2.5V
TP121
Pd=0.6W
R928
R905
C917
100R
VCC5V
10uF 6.3V X5R
100R
2
IC902
ZTL431AFFTA
R930
NC
OPTION FOR 0.5W
R934
2K
L913
TP143
+1.2V_STBY
120R/100MHz
C922 C923 C924
C925
10uF 6.3V X5R
3x 10uF 6.3V X5R
5
R500
R528 R529 R530 2.2K
0R* 0R* 0R*
GND
R505
6.8K
SAW101
K9656M
1
D101
R508
BA591
C107 0R
R531
2
IF_TV
0R
10nF
R513
2.2K
5
SECAM L ONLY
SDA_5V
SCL_5V
SAW100
K2982M/K3958M
4
1
R519
NC
L104
1uH
2
S100
POWER
TP114
1
2
3
4
5 TP115
max 1200mA TP116
6
TP117
7
TP118
8
TP28
+3.3V_STBY
9
10 TP119
4x 120R/100MHz
C905
11
12
10uF 6.3V X5R
13
14
VCC5V
T904
DMN3150L-7
3 2
+5V2_STBY VCC5V
TP123
C908
Pd=0.6W
10uF X7R
R915
R912
C913
+ 12V 5.36K 1%
5.6K
1n
C909
2
R920
1u 16V
IC 903 5.36K 1%
ZTL431AFFTA
V V
IN_A IN_SW
ST1S06
+
I_SEN
–
MOSEFET
Control
Logic
+
–
VO/FB
OSC
REF
Soft Start
Shut Down
INH GND
6
TOP TAGC VAGC
9 ( ) 8 14 (15) 6 1 1 (
C AGC(neg)
TUNER AGC VIF-AGC
2 (31)
VIF2
1 (30)
VIF1
SINGLE REFERENCE QSS MIXER
24 (27)
SIF2
23 (26)
SIF1
SUPPLY SIF-AGC
13 (6, 12, 13, 14, 17,
20 (22) 18 (20)
19, 25, 28, 29, 32)
V P AGND n.c.
C501
R502
100nF
47K
T103
BC847BWT
R504
R506
10K
C503
330R
C502
1.5nF
10nF
C504
5 C506 470nF
220nF
4
5
R520
4
10K
C519
C523
470nF
10nF
R532
NC
R525
9.1K
C522
8
390pF
C520
10nF
2 - 22
+5V2_STBY
L900
120R/100MHz
L901
120R/100MHz
L902
L903
+24V
L905
L908
+12V
C911 C912
100nF 50V
100nF 50V
R906
EXT_DIM_OUT
C906
4. 7 K
R9
100nF
+5V2_STBY +5V2_STBY
4K 7
04
R902
+3.3V_STBY
R903 1K
EXT_DIM_OU T 5
2
+3.3V_STBY
R910
10K
T902
BC847BDW1T1
R911
STBY
10K
Panel Power
L910
+5V2_STBY
120R/100MHz
C900
C920
R914
1uF
10uF
L911 22K
+12V 16V
120R/100MHz
+5V2_STBY
+3.3V_STBY
R917
4.7K
SW
R918
47K
PANEL_ON R919 1
T905
47K
BC848BLT1G
7 8
(1)
VPLL (1) Not connected for TDA9885. REF
) 7 19 (21) 5 1 1 ( ) 6
C BL
RC VCO DIGITAL VCO CONTROL AFC DETECTOR
SOUND CARRIER
VIF-PLL
TDA9885
TDA9886
AUDIO PROCESSING
INTERCARRIER MIXER
AND SWITCHES
AND AM DEMODULATOR
MAD
2
OUTPUT I C-BUS TRANSCEIVER
PORTS FM-PLL DEMODULATOR
C AGC
3 (1) 22 (24) 11 (10) 10 (9) 7 (5) 12 (11)
O P 1 O P 2 SCL SDA DGND SIOMAD
L100
VCC5V
10uH
R501
12K
C500
10uF/6.3V
R503
RF_AGC_A
1K
D100
IMBD4148
X101
R507
4M Hz
100K
C505
47uF/16V
7
C507
22pF C508
100nF
R509 R510
TUNER_CVBS
1K 47R
R511
1K
C510
NC
VCOM0
C512
100nF
IC500
TDA9885(6)TS/V3
6
C517 C518
100 nF 100nF
R521
SCL_5V
R522
100R
SDA_5V
R523 2.2K C322
100R
4
C521
100nF
R526
AUMONO
10K
100nF
R527
10K
Chassis TD / TE
C910
100nF
+3.3V_STBY
R907
R908
10K
T900
R909
1 BCKL_ON
10K
BC847BWT
T903
DMP2215
2 3
PANEL-VCC
TP122
R916
10K
AFC
1 2 2 ( ) 3
(18) 17
TRAPS CVBS
4.5 to 6.5 MHz
(7) 8
AUD
(3) 5
DEEM
(4) 6
AFD
NARROW-BAND
4 (2)
F M P L L
9
10
R518
SIF_P
47R
R524
SIF_M
47R