Ssb: Dc-Dc Converter (B6) - Philips 32PF9968/10 Service Manual

Circuit Diagrams and PWB Layouts
SSB: DC-DC Converter
1 2
DC-DC CONVERTER
B6
A
FROM TOP CONNECTORS
+12VUNREG
2704
10u 16V
+5V
B
2706
10u
3708 10K
+12VUNREG
6709
6708 3709 2708
SS14 47u 16V
SS24 6K8 RES
C
I710
5709
10u 7710
I711
L5973D
NC
Φ
VCC VREF
2710 2711
OUT
10u 10u 3
INH
FB
2
SYNC
NC
COMP
SUP_GND2 SUP_GND2
D
GND GND_HS
SUP_GND2
SUP_GND2 SUP_GND2
FOR UFD ONLY
SUPPLY TO TUNER & HERCULES
E
+12VSW 5730
I731
10u
I705
2730
2734
10u
22n
25V
2733
220p
F 3736
4K7
SUP_GND1
SUP_GND1
SUP_GND1 SUP_GND1 SUP_GND1
7738
+12VSW 5738 L78M08CDT
1
IN OUT
3
120R
COM 2739 +3V3STBY
2738
47u 16V 47u 16V
2
G
+12VUNREG 6740 3740
I740 I741
7741
BC847BW
1K5
BZX384-C8V2
3741 2741
1K5 220n
FOR UFD ONLY
3139 123 6145.4 *
For LATAM diversity see table in chapter 10
1 2
LC4.8L LA
3 4
F701
+12VSW
I706
5704
16V
7708
LF33CPT
F710
I709
1 5
IN OUT
I708
2 4
CTRL NC NC
COM
2709
5712 5713
I712 I713
1
33u 10u
I714
3712
5
5K6
2715 1%
I715 I716
4
22n
6712 2714 3716 3713 2713
16V
SS36 220p 4K7 3K3 470u
1%
SUP_GND2 SUP_GND2 SUP_GND2 SUP_GND2
SUP_GND2
4710
BZX384-C6V2
7730
L5970D
6735
BAV99
8 I733
1
VCC OUT
7735 I735
4 5
COMP FB
BC817-25
3 2
INH SYNC
2735
7 6 I734 470p
GND VREF
6733
5733 3735
SS14
220u
1K0
SUP_GND1 SUP_GND1
5735
SUP_GND1
1m0
SUP_GND1
3732 5737
3K3 I736
3733
SUP_GND1 1% 10u
1K0 1% I732
3743
22K
3742
15K 2731
I742
470u 16V
7742
BC847BW
SUP_GND1
3 4
7. 29
5 6 7
FOR LCD ONLY
+3V3STBY
+5VSWI
5758
RES
2749
10u
3758
15K
FROM SCALER
7755
+3V3STBY I760
PDTC114ET
PANEL-PWR-CTL
(0V)
F755
0V6
SUPPLY TO SCALER
2716
470u 16V
+12VSW
I751
RES 3751 3752
5752
1R0 1R0
10u
6710
I752
32V9
F736 +VTUN
2753
3753 I753
470u 16V
TO TUNER CELL
1K0 1%
2736
22u
35V 6736
2754
BZX384-C33
GND
SUP_GND3
RES
SUP_GND3
SUP_GND1
SUP_GND1
TO HERCULES CELL
FROM HERCULES
3759
+5VSW
5V2 F737
1K0
0V
+8VSW_TV
8V F738
SC_STANDBY
F743
7756
POWER_DOWN
3V1
PDTC114ET
B5
2737
470u 16V
B7
B16
6701
BAS316
5 6 7
8 9 10
I757
7 6
5
+12VSW
4
I749
3
2
1
I750
5755 5756
1751
RES
RES
7754 5757
I756
SI2301BDS-T1-E3
11V5 2 3
120R
3755 2751
5759 7753
10K 100n
L4940D2T12
1 RES
6V8
I747
PAN_VCC
5700 F700
I759
1 3
IN OUT
120R
3760
COM
100R
2759
RES 2752 2700 2701
47u 16V 100p
RES RES
2760
1u0
25V
FOR UFD ONLY
7752
MC34063AD
8 DCOL SWC 1
11V7
S Q
R
3734
7 IS 820R
11V7
I755
SWE 2
IPK
I758
TIMC 3
OSC
2756 6751
REFERENCE 5753
470p SS14
6 220u
VCC REGULATOR
11V7
SUP_GND3
CIN_NEG GND 4
5
SUP_GND3
1V2
SUP_GND3
3754 5754 F754
I754
10u
3K3 1%
2757
2755
+3V3STBY
470u 16V
4n7
3V2
SUP_GND3
2750
2u2
3750 2762
22K 22u 16V
7758
4
SI9433BDY-T1-E3
I748 SI4433DY
3V2
3761
100R
2761
1u0
25V
FOR UFD ONLY
8 9 10
1751 B9 6740 G1
2700 B10 6751 E10
B6
2701 B10 7708 B3
2704 B2 7710 C2
2706 B2 7730 E3
2708 C2 7735 F4
2709 C2 7738 G1
2710 D1 7741 G2
A
2711 D1 7742 G3
2713 D4 7752 D8
2714 D3 7753 B9
2715 D3 7754 B8
2716 D5 7755 B7
2730 F1 7756 G7
2731 G4 7758 F9
2733 F2 F700 B10
2734 F2 F701 A3
2735 F5 F710 B5
2736 E5 F736 E5
TO EPLD
B 2737 G5 F737 G5
2738 G1 F738 G5
LVDS_VCC
2739 G2 F743 G5
2741 G2 F754 E10
11V5
2749 B7 F755 C7
2750 F8 I705 E2
2751 B8 I706 B3
2752 B9 I708 C3
2753 E7 I709 B3
2754 E7 I710 C1
2755 F8 I711 C2
2756 E9 I712 D3
C
2757 F10 I713 D4
2758 F10 I714 D3
2759 B8 I715 D3
2760 C8 I716 D4
2761 G8 I731 E1
2762 F8 I732 G3
3708 C1 I733 E4
3709 C2 I734 F4
3712 D4 I735 F5
3713 D4 I736 F4
3716 D4 I740 G1
3732 F3 I741 G2
D
3733 G3 I742 G3
3734 D10 I747 B8
3735 F4 I748 F8
3736 F2 I749 A9
3740 G1 I750 B9
3741 G1 I751 D7
3742 G2 I752 E7
3743 G3 I753 E7
3750 F8 I754 E8
3751 E7 I755 E9
3752 E7 I756 B8
E 3753 E7 I757 A8
3754 E8 I758 E9
3755 B8 I759 B8
3758 B7 I760 B7
TO SCALER CELL TO LIPSYNC
3759 F7
3760 B8
+5VSWI
3761 G8
5V4
4710 E5
5700 B10
2758
5704 B3
470u 16V
5709 C1
5712 D3
F
5713 D4
5730 E1
5733 F4
5735 F4
5737 F4
5738 G1
5752 E7
+3V3SW
5753 E10
5754 E10
5755 A8
5756 A8
5757 B9
G
5758 A7
5759 B8
6701 G7
6708 C1
6709 C2
6710 E5
6712 D3
6733 F4
6735 E5
H_16980_006.eps
6736 E6
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