Circuit Diagrams And Pwb Layouts; Ssb: Dc/Dc - Philips LC7.2HU Service Manual

Circuit Diagrams and PWB Layouts

7. Circuit Diagrams and PWB Layouts

SSB: DC/DC

1 2
DC - DC
B02
A
GNDSND
GNDSND
5B10 -12V2
22u
-AUDIO_POWER
+12V2
5B11 22u
+AUDIO_POWER
GNDSND
5V2
+5V_STANDBY
B
* *
4C55
4C56
* *
4C61
4C62
RES * *
4C57
+5V_SW
RES
4C58
RES * *
4C59
RES
4C60
*
LCD 4C55 / 4C56 / 4C61 / 4C62
PDP 4C57 / 4C58 / 4C59 / 4C60
C
BL_ADJUST
FC26
RES
POWER_DOWN 4C01 IB18
BL_ON_OFF FC27
FB32
BACKLIGHT_BOOST
FB33
STANDBY FC28
+5V_STANDBY
FC29 FB34
+12V_DISP
D
+5V_STANDBY
ITV Connector
1B11
1
E 2
3
4 5
B3B-PH-SM4-TBT(LF)
ONLY FOR LCD
FB15
F
IB17
3B18
STANDBY
0V(5V)
4
6K8
G (---V) MEASURED IN STANDBY
H
3139 123 6266.2
1 2
LC7.2HU LB 7.
3 4 5
5B01 FB10
+5V_SW
1C01
10u
FB21 FB22
7B01
1
FB23 FB24 L5973D 8
2
FB25 FB26 VCC
3
FB27 FB28
4
FB29 3
5 INH
FB30
6
FC25 2
7 SYNC
8
FB31
9
GND GND_HS
B9B-PH-K
1P11
2V9
1
2V8
2
3
4
1V6
5 GNDDC
0V(5V)
6
7
8
B8B-PH-K-S
7B02
LD1117DT33C
FB13
3 2
+3V3_STBY
IN OUT
COM
+5V_STANDBY
7B05
SI4423DY
+5V_SW
3 4 5
31
6 7 8
RES
5B05
33u
Φ
VREF
IB11 5B03
1
OUT
33u
IB13
5
FB
IB12
4
COMP
IB20
9
IB19
3B12
470R
IB15
IB14
7B03
2N7002
GNDTUN
7B04
LD1085D2T33
FB16 FB17
3 2
+5V_SW IN OUT
COM
7B06
LD1117DT33C
FB19
3 2
+5V_SW IN OUT
COM
7B08
LD1117DT
FB20
3 2
+5V_SW IN OUT
COM
Partlist maintained in B03F DTV MOJO Analog Back End
6 7 8
9 10 11
RES
IB10
4B01
5B02 FB11
+1V8S_SW
10u
2B11
FB14
34V
+VTUN
+3V3_SW
+3V3_MOJO
+1V2_MOJO
FOR DTV ONLY
9 10 11
1B11 E3 IB17 F2
1C01 B3 IB18 C3
1P11 C3 IB19 C7
B02
2B10 B9 IB20 B8
2B11 B9
2B12 B5
2B13 B8
2B14 B6
A
2B15 B7
2B16 C8
2B17 E2
2B18 E4
2B19 D9
2B20 D8
2B21 E7
2B22 F3
2B23 F7
2B24 G4
2B25 G4
2B26 G7
B
2C55 A2
2C56 A3
2C57 C2
2C58 D2
2C59 B3
2C60 A3
2C61 A3
3B10 B8
3B11 C7
3B12 C7
3B13 D7
C 3B14 C7
3B15 D7
3B17 F2
3B18 F2
3B19 C7
4B01 B9
4C01 C2
4C55 B2
4C56 B2
4C57 B2
4C58 B2
4C59 C2
D
4C60 C2
4C61 B2
4C62 B2
5B01 B4
5B02 B9
5B03 B8
5B04 D7
5B05 B8
5B06 D7
5B10 B2
5B11 B2
6B01 B8
E
6B02 D9
6B03 D8
7B01 B5
7B02 D3
7B03 D7
7B04 E7
7B05 F3
7B06 F7
7B08 F7
FB10 B5
FB11 B9
F FB13 D4
FB14 C9
FB15 F3
FB16 E6
FB17 E8
FB19 F8
FB20 F8
FB21 B3
FB22 B3
FB23 B3
FB24 B3
FB25 B3
G
FB26 B3
FB27 B3
FB28 B3
FB29 B3
FB30 B3
FB31 B3
FB32 C3
FB33 C3
FB34 D2
FC25 B3
FC26 C2
FC27 C2
H
FC28 C2
FC29 D2
IB10 B8
IB11 B8
IB12 B6
H_16990_001.eps IB13 B7
090707
IB14 D7
IB15 D8