Tuner Board: Main Tuner - Philips 32PF9968/10 Service Manual

Circuit Diagrams and PWB Layouts

Tuner Board: Main Tuner

1T04 A2 2T46 D11 2T59 D3 2T64 C3 2T81 F10 2T85 E13 2T89 E10 2T97 F11
1T06 C6 2T48 D13 2T61 D2 2T65 D11 2T82 F10 2T86 E8 2T90 E14 2T98 F10
1T55 A6 2T51 E13 2T62 C3 2T75 C2 2T83 G10 2T87 E8 2T91 F8 2T99 B13
2T45 F13 2T53 C1 2T63 E11 2T80 F11 2T84 E2 2T88 D10 2T92 G13 2TA1 E1 4
1 2 3
MAIN TUNER
T01B
A
1T04
TD1736F/FHFXP
TUNER
14 13
15 12
B
5T54
+5V-TUNER
220R
IT89
V2
C
V2 IT90
IT91
D
IT87
7T56
BC847BW
IT88 3T68
4K7
E
F
G
3139 123 6373.1
1 2 3
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PB52.1HU LA 7.
2TA2 G1 0 2TA6 B8 2TB1 F8 2TB5 E13 3T54 F10 3T58 E8 3T69 E2 3T76 D13
2TA3 D1 4 2TA7 B1 1 2TB2 D3 2TB6 E13 3T55 F10 3T59 E8 3T70 D2 3T77 D4
2TA4 D1 3 2TA8 B9 2TB3 C12 3T50 F14 3T56 E13 3T64 G8 3T74 G10 3T81 E14
2TA5 D1 2 2TA9 B9 2TB4 B1 2 3T53 D4 3T57 D14 3T68 D3 3T75 G10 3T82 E14
4 5 6 7
IF-OUT 1 4
I O1
2 5
IGND O2
FT60
3
GND
1T55
M1867D
45M75
AT62
IF-OUT IF-FILTP3
IF-FILTN3
5T61
IF-OUT 1 4
270n
I O1
2 5
IGND O2
3
GND ANALOGUE VIDEO
1T06
M1867D
45M75
IF-FILTP1
IF-FILTN1
FT53
4-MHz
FT52
TUN-AGC
9T51 IT78
SDA-SSB-MUX2
3T77
9T68 TUN-TDA-SDA
RES
47R
3T53
9T67
TUN-TDA-SCL
RES
47R
IT76
9T52 SCL-SSB-MUX2
TDA-IF-IN-N
IT80
FM-TRAP-SWITCH
TDA-IF-IN-P
FT73
IF-N
FT74
IF-P
TUN-AGC
CVBS-BO
4 5 6 7
159
3T83 F8 3TA2 B11 5T55 A11 7T54 A12 7T59 F9 9T63 F10 AT57 E1 4 FT52 C5
3T84 G9 3TA3 B9 5T60 B7 7T55 A10 9T51 D4 9T67 D4 AT58 E1 4 FT53 C5
3T98 F9 5T53 C12 5T61 B4 7T56 D2 9T52 D4 9T68 D4 AT59 F14 FT56 F13
3TA1 B11 5T54 B3 6T01 B10 7T57 D11 9T57 F8 AT56 E1 4 AT62 B5 FT57 G8
8 9 10
ATSC
+12V +3V3
7T55
L5970D
5T55
8 1
VCC OUT
5T60
4 5
COMP FB
1u5
3 2
INH SYNC
7 6
GND VREF
2T46
2T88
10n
2T65
2T63
2T89
10n
V1
9T63
TUN-AGC
9T57 TUN-AGC-MON
2T98 1n5
3T54 330R IT73
2T81
IT66
7T59
BC847BW
2T97
47p
IT63 2T82
FT72 3T83 3T55
IT67
68R 8K2 2n2
3T74 IT83
470R
3T75 IT75 2T83
FT57
2K7 4n7
8 9 10
FT60 A6 FT74 F7 IT62 F11 IT67 F9 IT73 F11 IT77 F11 IT83 G10 IT89 B3
FT70 C13 FT75 E11 IT63 F10 IT68 E13 IT74 F11 IT78 C5 IT84 F11 IT90 D4
FT72 F8 FT76 E11 IT65 E11 IT69 E13 IT75 G10 IT79 F13 IT87 D2 IT91 D4
FT73 E7 IT60 D11 IT66 F9 IT71 D13 IT76 D5 IT80 D5 IT88 D2 IT92 D13
11 12 13 14
7T54
LD1117DT50C
3 2
IN OUT +5V-TUNER
22u
COM
1
+5V-TUNER
IT93
FT70
V1
7T57
TDA9897HL/V2C
3T76 3K3
14
VP
Φ IT71
10n 45 IC 39 2TA3 100p
OPTXTAL
RES
IF IT92
2 46 2T48 100p
FREF
470n 5 PROCESSING
IT60 3T57 100R
100n 8 23
SDA
18 24 3T56 100R
NC SCL
35 32
BVS
37 25
ADRSEL
42
AT57
6 2T51 10n
A
26 IF1 7 2TA1 10n AT56
A B
27 OUT1
B
IT68
9 2T90 10n
A
2T85 10n
29 IF2 10
FT75 A B
30 OUT2 3T82 180R
FT76 B
2TB5 10n
3
A
3K9
47 IF3 4 3T81
TAGC B
31
2TB6
AUD
IT65 RES
33 17 IT69 3T50 100K
CVBS FILI
10n
EXT
12 21
1 FMI
16 MPP
2 FT56
36
AGCDIN
15
EXTFILO
2T80
IT74 13
VIF
11
220n TOP2
IT62
19
FM LF
IT84
100n 38
SYN1
RES IT77 1 28
SYN2 CAF1
IT79
20 34
CDEEM CAF2
GND GNDD GNDA
11 12 13 14
IT93 C12
15
T01B
A
B
C
D
4-MHz
SDA-SSB1
SCL-SSB1
IF-FILTN 1
IF-FILTP1
E
IF-OUT
AT58
IF-FILTP3
IF-FILTN3
AT59
TDA-IF-AGC
F
G
I_17500_057.eps
150408
15