Philips 42PF9945 Service Manual page 89

Circuit Diagrams and PWB Layouts
Small Signal Board: 2FH Interface
2724 E2 2842 A6 2858 E5 3700 A2 3723 C5 3796 E3
2806 F2 2844 C3 2862 E5 3701 A5 3794 E1 3797 F3
2837 A3 2852 C6 2863 E5 3702 C2 3795 F1 3798 E4
1
2FH INTERFACE
B19C,F
B3A,C
A
9736
B19f
SWITCH-2FH
Y-2FH-7
Y-2FH-6
Y-2FH-5
Y-2FH-4
Y-2FH-3
B
Y-2FH-2
Y-2FH-1
Y-2FH-0
C 9742
B19f
SWITCH-2FH
UV-2FH-7
UV-2FH-6
UV-2FH-5
UV-2FH-4
UV-2FH-3
UV-2FH-2
UV-2FH-1
UV-2FH-0
D
+3V3_FBX
2724
100n
7747
74LVC1G126
B3a
2
CLK32P
E
B3f
3794
1
SWITCH-2FH
EN
10R
2806
100n
7748
74LVC1G125
B3d
3856
2
CLK32I
B19f 56R 3795
F 1
EN
SWITCH-2FH 10R
8204 000 8323.2
1
FTP1.1E
3799 E4 3848 F6 3852 E3 3856 F1 5702 D5
3846 F4 3849 F6 3853 A6 5700 D2 5715 A6
3847 F4 3851 D6 3855 F5 5701 E4 6845 D6
2 3
7742
74LVC245APW
1
3EN1
B3C,D
3EN2
FF75
19
G3
2 18 YF-BUFF(7)
1
2
3 17
YF-BUFF(6)
4 16
YF-BUFF(5)
5 15
YF-BUFF(4)
6 14
YF-BUFF(3)
7 13
YF-BUFF(2)
8 12
YF-BUFF(1)
9 11
YF-BUFF(0)
7744
74LVC245APW
1
3EN1
B3C,D
3EN2
FF74
19
G3
2 18
UVF-BUFF(7)
1
2
3 17
UVF-BUFF(6)
4 16
UVF-BUFF(5)
5 15 UVF-BUFF(4)
6 14
UVF-BUFF(3)
7 13
UVF-BUFF(2)
8 12 UVF-BUFF(1)
9 11
UVF-BUFF(0)
BAS316
100R
B3a
3V3_FAULT_FBX
6846 3852
5
3796
4
100R
3
CLK32O
B3c
3797
4
100R
2 3
7. 49
6846 E3 7743 A5 7746 E5 9703 E4 9737 A5
6847 A6 7744 C3 7747 E2 9707 E4 9738 A2
7742 A3 7745 C5 7748 F2 9736 A2 9739 A5
4 5 6
BAS316
6847
FF71
7743
74LVC245APW
9737 1
3EN1
FF76
3EN2
B19f
19
SWITCH-1FH
G3
2 18
1
YF(0) YF-BUFF(0)
2
3 17
YF(1) YF-BUFF(1)
4 16
YF(2) YF-BUFF(2)
5 15
YF(3) YF-BUFF(3)
6 14
YF(4) YF-BUFF(4)
7 13
YF(5) YF-BUFF(5)
8 12
YF(6) YF-BUFF(6)
9 11
YF(7) YF-BUFF(7)
B3A,B
7745
74LVC245APW
9743 1
3EN1
FF77
3EN2
B19f 19
SWITCH-1FH
G3
2 18
1
UVF(0)
2
3 17
UVF(1)
4 16
UVF(2)
5 15
UVF(3)
6 14
UVF(4)
7 13
UVF(5)
8 12
UVF(6)
9 11
UVF(7)
+3V3_FBX
B3B
BAS316 100R
+3V3_FBX
6845 3851
16V 100u
2858
2863
100n
2862
7 100n
7746
CY23S02
VDD
9703 4
FS0
9707 5 6
FS1 OUT1
3846 3849
2 8
IN OUT2
10R
56R
1
FBIN
3847
GND
10R
3
4 5 6
9742 C2 9749 C5 FF75 A2
9743 C5 FF71 A6 FF76 A5
9748 C2 FF74 C2 FF77 C5
7
100R
3853
3V3_FAULT_FBX
5715
B3a
+3V3_FBX
A
B
B3C,D
C
UVF-BUFF(0)
UVF-BUFF(1)
UVF-BUFF(2)
UVF-BUFF(3)
UVF-BUFF(4)
UVF-BUFF(5)
UVF-BUFF(6)
UVF-BUFF(7)
D
B3C,D
3V3_FAULT_FBX
B3a
B3d
3848
CLK32I
10R
B3c
CLK32E
CL 36532075_016.eps
151003
7
E
F