Circuit Diagrams And Pwb Layouts; Ssb: Dc / Dc 3V3, Vtun, & 5V_Sw - Philips LC7.5E Service Manual

Circuit Diagrams and PWB Layouts

7. Circuit Diagrams and PWB Layouts
SSB: DC / DC 3V3, VTUN, & 5V_SW
1 2
DC / DC - 3V3 & VTUN & 5V_SW
B01A
5B01 FB10
+5V_SW
A
10u
B
GNDDC
C
7B02
LD1117DT33C
+5V_STANDBY
3 2
IN OUT
COM
D
E
ONLY FOR LCD
F
IB49
3B18
STANDBY
0V(5V)
6K8
3139 123 6273.1
(---V) MEASURED IN STANDBY
1 2
LC7.5E LA
3 4
7B01
L5973D 8
VCC VREF
Φ
1
OUT
3
IB51
INH
5
FB
2
SYNC IB12
4
COMP
GND GND_HS
9
IB19
IB14
1
FB13
+3V3_STBY
+5V_STANDBY
FB15
7B12
4
FB40
+5V_SW
SI4423DY
3 4
7. 44
5 6
5B05 5B08 FB11
IB50
22u 10u
2B27
IB20
3B12
1K5
FB14
IB15
7B13
2N7002
GNDTUN
ONLY FOR ANALOG TUNER
5 6
7 8
+3V3_SW
+VTUN
34V
5V2
+5V_STANDBY
* *
4B04
4B05
* *
4B06
4B07
RES
* *
4B08
+5V_SW
RES
4B09
RES * *
4B10
RES
4B11
*
LCD 4B04 / 4B05 / 4B06 / 4B07
PDP 4B08 / 4B09 / 4B10 / 4B11
3B68
BL_ADJUST FB36
RES
POWER_DOWN 4B12 IB52
BL_ON_OFF FB37
FB32
BACKLIGHT_BOOST FB33
STANDBY FB38
+5V_STANDBY
FB39 FB34
+12V_DISP
7 8
9
1B12 D9
1B13 F9
2B06 E8
B01A
2B10 A6
2B12 B2
2B18 D2
2B19 C6
2B20 C5
2B21 F3
A
2B22 F2
2B24 F3
2B25 B3
2B26 B4
2B27 B7
2B63 F8
2B65 D1
2B66 B5
2B67 B5
2B68 F9
3B10 A5
3B12 B5
B
3B15 D4
3B17 F2
3B18 F2
3B19 B5
3B65 B4
3B66 B4
3B67 C4
3B68 F9
4B04 E8
4B05 E8
4B06 E8
4B07 E8
C
4B08 E8
4B09 E8
4B10 E8
4B11 E8
4B12 F8
5B01 A2
5B05 A5
5B06 C4
5B08 A6
6B02 C6
6B03 C5
D
6B30 B5
7B01 A3
7B02 D2
7B12 F2
7B13 C5
1B12
FB07 E9
FB27 FB28
FB10 A2
1
FB29
2
FB11 A6
FB30
3
FB13 D2
FB07
4
FB14 C6
5
FB31
FB15 E2
6
FB27 D9
440054-6
E
FB28 D9
FB29 E9
FB30 E9
FB31 E9
FB32 F8
FB33 F8
FB34 F8
1B13
2V9
100R
FB36 F8
1
2V8
FB37 F8
2
3 FB38 F8
4
FB39 F8
1V6
5
0V(5V)
FB40 F3
F
6
IB12 A4
7
IB14 C4
8
IB15 C5
440054-8
IB19 B4
IB20 B5
IB49 F2
IB50 A5
H_17370_001.eps
IB51 A4
010804
IB52 F8
9