Tuner - Philips 26MF337B/27 Service Manual

Scaler Board Schematic Diagram-Tuner
1 2
A
B
TP200
TU201
+5V_T
C201
100N 16V
15
GND
16
GND
NC/470N 10V
1
AGC MONITOR (NC)
C217
2
ANT SUPPLY (+5V)
3
+5V
C
SCL
4
SCL
5 SDA
SDA
6 AGC
IF AGC
FAT+
7
DIF
FAT-
8
DIF
R203 NC/0R05 1/10W
9
AS TUNER
10 R204 NC/0R05 1/10W
AS IF
11 SIF
2ND IF SOUND
NTSC_CVBS
12
CVBS
+5V_IF
13
+5V IF
MONO
14
AF/MPX
17
GND
18
GND
C206
FQD1236/F H-5
100N 16V
D
PHILIPS COMBO-TUNER
E
NEARLY TUNER
NTSC_CVBS
R207 C210
75R 1/10W 47P 50V
F
SIF
C214 47U/25V
MONO
R213
G 4K7 1/10W
H
1 2
3 4 5
TU201 AND TU202 IS SAME LOCATION
TU202

TUNER

TU201
PHILIPS FQD1236 NC
ALPS
NC TDUQ2
CLOSE TO TUNER
FB201 FB203 +5V_TUNER
1 2 1 2
220R/2000mA 220R/2000mA
C202 C203 C215
100UF/25V 100UF/25V 100N 16V
L201 2.2uH TUNER_SCLO
L202 2.2uH TUNER_SDAO
R202 4K7 1/10W IF_AGC
C204
10N 50V
TP201
1
TP202
+5V_TUNER
FB202
1 2
120R/500mA
C205
10U 25V
R205 0R05 1/10W FAT_IN+
R206 0R05 1/10W FAT_IN-
ROUTE SYMMETRICALLY
NEARLY MT5372
R201
C207 47N 16V CVBS0
100R 1/10W
NTSC CVBS
C212 5P6 50V MPX1
R2120R05 1/10W
C213
15P 50V
SIF (4.5MHz)
R214 R215 C211 47U/25V
MPX2
39K 1/10W 39K 1/10W
C209 C208
15P 50V
15P 50V
MONO
3 4 5
7.Circuit Diagrams and PWB Layouts
6 7 8
S-03
C216 R217
R207 R219 R220 C218 R216
NC NC 75R NC NC NC
NC
100K
10N 2K2 NC 220K 100N 0R
TU202
NC/TDQU4-507A
20
TH1
21
TH2
1
NC or OOB
2 +5V_T
B1_+5V
3
GND or SIF O/P
NTSC_CVBS
4
GND or CVBS
R220
5
RF_AGC (Mon)
NC/100K 1/10W 5%
6
NC or AFT
7
NC or IF_AGC(Mon)
8 +5V_IF
NC or B2_Ana_+5V
C218
100N 16V
9
TU_+32V
10
GND
11
GND
SCL
12
SCL
SDA
13
SDA
R216
14
AS
15 NC/0R05 1/10W
B_IF O/P
16 AGC
D_IF_AGC
17
NC
FAT+
18
D_IF_O/P_1
FAT-
19
D_IF_O/P_2
22
TH3
23
TH4
ALPS-TUNER
+5V_TUNER
DV33
R208 R209
10K 1/10W
10K 1/10W
TUNER_SDAO 3
TUNER_SCLO
3
TUNER I2C LEVEL SHIFTER
6 7 8
9 10
+5V_TUNER
2 +5V_TUNER
DV33
2,4,5,6,7,11,13,14,16 DV33
GND
1,2,4,5,6,7,8,9,10,11,12,13,14,15,16,17 GND
AFT
5 AFT
IF_AGC
4 IF_AGC
C216 FAT_IN+
4 FAT_IN+
NC/10N 50V FAT_IN-
4 FAT_IN-
SIF
TUNER_SCL
4 TUNER_SCL
TUNER_SDA
4 TUNER_SDA
AFT
TUNER INTERFACE
R217
NC/2K2 1/10W 5%
R219
NC/220K 1/10W
CVBS0
5 CVBS0
MPX1
5 MPX1
MPX2
5 MPX2
AGND_AFE
1,2,4,5,6,7,8,9,10,11,12,13,14,15,16,17 AGND_AFE
TUNER - ANALOG OUTPUT
C201 C3
C203 C4
C205 D3
C207 E4
DV33
C209 G3
C211 G4
C213 F4
C215 C5
R210 R211 C217 C2
2N7002 FET 4K7 1/10W FB201 B3
4K7 1/10W
Q201
FB203 B5
L202 C3
2 TUNER_SDA
Q202 F8
R202 C4
R204 C3
R206 D4
R208 F7
TUNER_SCL
2
R210 F9
R212 F3
Q202
2N7002 FET DV33 R214 G3
R216 D7
R219 C8
TP200 B3
TP202 D3
9 10
TPM1.0U LA 23
11
A
B
C
D
E
C202 C3
C204 C4
C206 D3
C208 G4
C210 F3
C212 F4
C214 G2
C216 C9
C218 C7
FB202 D3
L201 C3
F
Q201 F8
R201 E3
R203 C3
R205 D4
R207 F2
R209 F7
R211 F9
R213 G2
R215 G4
R217 C9
R220 C8
TP201 C3
TU201 C1
G
H
11