Philips BJ2.4U Service Manual page 59

Circuit Diagrams and PWB Layouts
SSB: MPIF Main: IF & SAW Filter
1C51 A4 1C61 A5 2C50 A5 2C57 B7 2C65 C9 2C72 E2
1C52 B4 1C62 B5 2C52 A1 2C58 B8 2C67 C6 2C75 B7
1C53 D4 1C63 C5 2C53 A1 2C60 B1 2C68 C8 2C78 C6
1C54 A10 2AB8 B10 2C55 A7 2C63 B6 2C70 D2 2C79 C8
1 2
MPIF MAIN: IF + SAW FILTER
B3C
+8VMPIF-MAIN
A
IC51
5C52
+8VaM
220R
+5VMPIF-MAIN
IC52
+5VaM
B
C
+8VaM
FC73
2C70
IF-TER2
10n
D
IC56
3C60
9C58
SEL-IF-LL2
27K
+8VaM
7C55
VISUAL-CHECK
E
BC847BW
3104 313 6145.2
1 2
BJ2.4U/BJ2.5U PA
2C83 C6 3C55 C9 3C59 D3 3C66 D4 3C73 B9 5C52 A1
3C50 D3 3C56 D2 3C60 D1 3C67 E2 3C74 B10 5C53 A7
3C51 A6 3C57 D2 3C61 D4 3C70 B9 3C75 B10 5C54 B1
3C53 B7 3C58 D4 3C65 D3 3C71 A9 3C76 B9 5C57 D2
3 4
1C61
X7351P
1
I
14
IGND
2
6
GND
11
1C51
40M4
2
I
9C51 3
ISWI
1
9C52
4
IC85
5
6
9
10 GND
13
14
15
18
1C62
X7351P
1
I
14
IGND
2
6
GND
11
1C52
OFWK3953L
9C53
2
I1
3
I2
1
4
5
6
IC55
9C54
9
10 GND
AC05
IC84 13
9C56 14
15
18
9C57
1C63
X7351P
1
I
14
IGND
2
6C51 IC74
6
GND
11
BA591 +8VaM
IC54
1C53
+8VaM
OFWK3955L 38M
2
I1
3
I2
1
4
5
6
3C59 IC57
9
7C53
BC847BW 10 GND
22K
13
14
7C54
BC847BW 15
18
IC58
3 4
7. 59
6C51 C4 7C53 D4 7C57 A9 9C54 C4 9C59 C9 AC03 C6
6C52 D3 7C54 D3 9C51 A4 9C56 C4 9C61 C7 AC04 C6
6C59 C9 7C55 E2 9C52 A4 9C57 C4 AC01 B6 AC05 C4
7C00-2 B7 7C56 B10 9C53 B4 9C58 D2 AC02 C6 FC52 C6
5 6
44M
7
O
8
OGND
4
9
GND
13
3C51
+5VMPIF-MAIN
2C50
7
O1 2R2
8
O2 10n
11
OFWK9656L
12
NC 16
17
IC75
5C53
+5VbM
220R
44M
7
O
8
OGND
4
9
GND
13
IC60
2C63 IC59
3C53
390R
100n
38M9
AC01
7
O1
8
AC02
O2
AC03
11
12
AC04
NC 16
17
IC61
FC52
9C61
44M
7
2NDSIFEXTM
O
8
OGND
4
9
GND
13
7
O1
8
O2
11
12
NC 16
17
5 6
FC73 D1 IC55 C3 IC59 B7 IC64 C8 IC75 A6 IC79 B9 IC87 B8
IC51 A1 IC56 D2 IC60 B7 IC65 C8 IC76 A9 IC84 C4 IC88 B8
IC52 B1 IC57 D4 IC61 C7 IC72 B7 IC77 A9 IC85 A4
IC54 D3 IC58 E2 IC63 C9 IC74 C4 IC78 B10 IC86 B8
7 8 9
+5VbM
3
1 7C57
BC847BW
3C71
2
IC77
IC76
IC72
IC88
2C58
10n
IC86
IC87
3C73
7C00-2
100R
PNX3000HL/N2
111 120
VIFPLL CVBSOUTIF
107 IF PART 116
VIFINP DTVOUTP
108 117
VIFINN DTVOUTN
99
SIFINP
122
+5VaM
VCC1_VSW
100
IC63
SIFINN 6C59
118
VCC_SUP
BAS316
101
125
SIFAGC VCC2_VSW +5VaM
IC64
114
2NDSIFAGC
105
TUNERAGC
102
DTVIFAGC
113
2NDSIFEXT
IC65
106
FUSE4
7 8 9
10
B3C
A
1C54
1 3 2NDSIFEXTM
I O
1K0
2
GND
SFSKA
4M5
+5VbM
B
3 CVBSOUTIF-MAIN
IC79
1 7C56
BC847BW
3C74 3C75
2
180R 180R
IC78
3C55
+5VMPIF-MAIN
330R
C
+5V-AUD
D
E
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