A/V Board - Philips LX9000R Service Manual

Circuit Diagrams and PWB Layouts
1701 C7 1705 D2 2720 B4 2724 B10 2729 C12 2733 D2 2737 E15 3701 A7
1702 E7 1706 F14 2721 B5 2725 D3 2730 C9 2734 D4 2740 F8 3702 A2
1703 D7 2713 A3 2722 B8 2727 C8 2731 C9 2735 E1 2741 F4 3703 A3
1704 F14 2719 B5 2723 B8 2728 C11 2732 D1 2736 E2 2742 F8 3704 C1
1 2 3

A/V BOARD

1
FRONTEND VIDEO FV
4
A
5SW 33VSTBY
GND GND
5SW
I732
B
C
I733
1705
UV1316K 1 7 9
D
AGC VCC +33V
GND GND
11
2
TU IF
F701
8
3
AS NC|ADC
I734
I715 3727
4
SCLSW SCL
10
1R
5
2
SDA NC
I735
I716 3729
SDASW
GND
6
1R
12 13 14 15
E
F707
GND GND
GND
F
G
H
I
...V DC voltages measured in Stop mode
1 2 3
LX9000R
3705 C14 3715 B12 3724 B8 3728 D13 3732 E15 3736 F15 3740 F9
3710 A9 3716 B5 3725 B12 3729 E1 3733 G4 3737 E6 3741 D14
3711 A4 3717 E12 3726 C5 3730 D5 3734 F15 3738 E6 3742 F6
3714 B11 3720 B9 3727 D1 3731 F13 3735 F14 3739 F10 3743 G8
4 5 6
F704
5SW
for MSTD only
40,4-ADJUST
5SW
7KMY 5710
2721 I702
4
3
120p
2
2719
6
1
220p
8 7
GND GND
F709
1
I704
2
7704
PDTC124EU
GND
F710 2734 7705
PDTC124EU
1n
GND
GND
GND
I706
5SW 5SW
OFWK9656M
2741
I729
1
1n
6705 I730
2
BA591
GND
4701
delete for MSTD
5SW 5SW
I731
7706
7712
PDTC124EU
PDTC124EU
GND
GND I739
F713 3745
7714
BC847BW
5K6
GND
GND
2
for MSTD only
4 5 6
7. EN 91
3744 G8 4700 E4 5709 B11 5714 G14 7701 A10 7706 H6 7713 D12 F701 D2
3745 H5 4701 G5 5710 B6 6703 C5 7702 D15 7710 C8 7714 H6 F702 C11
3746 H6 5704 A2 5711 C10 6704 E5 7704 C6 7711 F14 7716 D14 F703 D7
3758 G6 5705 B4 5713 D13 6705 F5 7705 D6 7712 H4 7717 G7 F704 A4
7 8 9
I717
I745
3701
0V
680R
7701
PDTC124EU
GND
GND GND GND
AGC-ADJUST
AFC-ADJUST
8
I746
6
2731
I709
4
8p2
7KMY
N750
3,3V
4
*
1701
7710
OFWK3953M
TDA9817 22 15 4 6 7 19 18
5 3,3V
3
14
TUNER VIF
F703
AGC AGC
GND
1 4 3,3V 1
VCO
FPLL
*
VIF
I707 TWD
1703
3,3V 2
AMPLIFIER
OFWG3956M
I708
2 5
3,2V 23
QSS MIXER
SIF
3 INTERCARRIER MIXER
3,2V 24
AMPLIFIER AM DEMODULATOR
GND
SIF
INTERCARRIER
MODE SWITCH
AGC
1,4V 3,2V
5 3 2V 12
I727 I728
1702
4
5
GND
GND
3 GND
GND
5SW
3743
7717
BC847C
56K
GND
2 5
7 8 9
F707 E3 F713 H5 I706 E6 I711 C9 I717 A9 I725 F13 I729 F5 I733 C2
F708 B11 I701 D2 I707 D7 I712 C9 I721 G9 I726 E10 I730 F5 I734 D1
F709 C6 I702 B6 I708 D7 I715 D1 I723 F15 I727 E8 I731 H4 I735 E1
F710 D3 I704 C5 I709 C8 I716 E1 I724 E14 I728 E9 I732 B3 I739 H6
10 11 12 13
2
5SW 5SW
F708
3715
10K
7
1
2
3
5711
GND GND GND GND GND
GND
for MSTD only
17 21 20
VOLTAGE
REFERENCE
AFC
DETECTOR
BC857BW
I749
3728
16
2,7V
100R
VIDEO DEMODULATOR
AND AMPLIFIER
8
I751
FM-PLL DEMODULATOR
13 9 10 11
I726
*
I725
3731
270R
GND
Pos.
1703
I
B/G L L' D/K
1704
1706
PSS 1 1 0 0 1
3731
4700
SB1 0 0 0 1 0
4701
7710
SFS_TS 1 1 1
0 1
10 11 12 13
I742 D5 I746 B9 I754 D13
I743 E7 I748 C9
I744 E7 I749 D12
I745 A8 I751 D13
14 15
A
B
AFC
2
C
5SW
3741
7716
BC857BW
4K7
7702
SB1
PDTC124EU
5713
2
D
15u
I754
GND
5SW
E
I724
7711
GND
BC857BW I723
*
1704
VFV
3 1
O I 2 7
5MHZ5
F
TPSR
2 G
GND
GND
*
1706
GND
GND
3 1
TPS VFV I723
2
GND
5714
G
15u
A: DC, 500mV/Div
10us/Div
* VERSION TABLE
H
PAL BG (/01) PAL I (/07) MULTISTD (/39)
G3956M K3953M G3956M
TPS 5,5 MHz -- TPS 5,5 MHz
-- --
TPS 6,0 MHz
330R 270R
270R
0R 0R --
I
--
0R 0R
TDA9817 TDA9817 TDA9818
A/V board LX9000R, 090703
14 15