Philips 15MF227B/27 Service Manual page 27

Scaler Schematic Diagram - Tuner
Board
1 2
S-A03
A
B
TU201
GND
GND
AGC MONITOR (NC)
ANT SUPPLY (+5V)
C
+5V
SCL
SDA
IF AGC
DIF
DIF
AS TUNER
AS IF
2ND IF SOUND
CVBS
+5V IF
AF/MPX
GND
GND
FQD1236/F H-5
D
E
NTSC_CVBS
R207
75R 1/10W
F
SIF
C214
MONO
G
R213
4K7 1/10W 5%
H
1 2
3 4
TU201 AND TU202 IS SAME LOCTION
TUNER
TU201 TU202 C216
FQD1236
ALPS
CLOSE TO TUNER
FB201
+5V_T
1 2
C201 120R/500mA
100N 16V
C203 C215
15
100UF/25V
C202 100N 16V
16
100UF/25V
470N 10V
1
C217
2
3
SCL L201 2.2uH
4
SDA L202 2.2uH
5
6 AGC R202 4K7 1/10W
FAT+
7
FAT-
8
R203 NC/0R05 1/10W C204
9
R204 NC/0R05 1/10W 10N 50V
10
SIF
11
12 NTSC_CVBS
13 +5V_IF +5V_TUNER
MONO FB202
14
17 1 2
18
120R/500mA
C206 C205
100N 16V 10U 25V
R205 0R05 1/10W FAT_IN+
R206 0R05 1/10W FAT_IN-
R201
C207 47N 16V CVBS0
100R 1/10W
C210
47P 50V
C212 5P6 50V MPX1
R2120R05 1/10W
C213
15P 50V
47U/25V R214 R215 C211 47U/25V
MPX2
39K 1/10W 39K 1/10W
C209 C208
15P 50V 15P 50V
3 4
7.Circuit Diagrams and PWB Layouts
5 6 7
R217 R219 R220 R207
FB203
+5V_TUNER
1 2
120R/500mA TU202
20
TH1
21
TH2
1
NC or OOB
TUNER_SCLO
2
B1_+5V
TUNER_SDAO
3
GND or SIF O/P
IF_AGC 4
GND or CVBS
5
RF_AGC (Mon)
6
NC or AFT
7
NC or IF_AGC(Mon)
8
NC or B2_Ana_+5V
9
TU_+32V
10
GND
11
GND
12
SCL
13
SDA
14 R216
AS
15 NC/0R05 1/10W
B_IF O/P
16
D_IF_AGC
17
NC
18
D_IF_O/P_1
19
D_IF_O/P_2
22
TH3
23
TH4
NC/TUN_ALPS_TDQU2
+5V_TUNER
DV33_DM
R208 R209 4K7 1/10W 5%
10K 1/10W
10K 1/10W 2N7002 FET
Q201
TUNER_SDAO
3 2
TUNER_SCLO
3 2
Q202
2N7002 FET DV33_DM
TUNER I2C LEVEL SHIFTER
5 6 7
8 9 10
C216
+5V_T NC/10N 50V
SIF
NTSC_CVBS
R220 AFT
NC/100K 1/10W 5%
+5V_IF
R219 R217
NC/220K 1/10W NC/2K2 1/10W 5%
SCL
SDA
AGC
FAT+
FAT-
2 +5V_TUNER
2,4 DV33_DM
DV33_DM 1,2,4,5,6,7,8,9,10,11,12,13,14,15 GND
R210 R211
4K7 1/10W 5% 4 AFT
4 IF_AGC
4 FAT_IN+
TUNER_SDA
4 FAT_IN-
4 TUNER_SCL
4 TUNER_SDA
TUNER_SCL
5 CVBS0
5 MPX1
5 MPX2
1,2,4,5,6,7,8,9,10,11,12,13,14,15 AGND_AFE
CP NR. CL6xxxx
Title
DS 15MF237S MAIN BOARD (TUNER)
Size Document Number
E157C2NKA1PMNS (715T2225-1)
C
Date: Nov 29, 2006
8 9 10
TPM1.0U LA 27
11
A
C201 C3 B
C202 C4
C203 C4
C204 C4
C205 D3
C206 D3
C207 E4
C208 G4
C209 G3
C210 F3
C211 G4
C212 F4
C213 F4
C214 G2
C215 C5
C216 C9
C
C217 C3
FB201 C4
FB202 D3
FB203 C5
L201 C3
L202 C3
Q201 F7
Q202 F7
R201 E3
R202 C4
R203 C3
R204 C3
R205 D4
R206 D4
R207 F2
R208 F6
D
R209 F6
R210 F8
R211 F8
R212 F3
R213 G2
R214 G3
R215 G4
R216 D7
R217 C9
R219 C8
R220 C8
TU201 C2
TU202 C6
E
+5V_TUNER
DV33_DM
GND
AFT
IF_AGC
FAT_IN+
FAT_IN-
F
TUNER_SCL
TUNER_SDA
CVBS0
MPX1
MPX2
AGND_AFE
G
H
Rev
1
Sheet 3 of 15
11