Supply - Philips LC4.2E Service Manual

Circuit Diagrams and PWB Layouts
TV & Scaler Board: Supply
1 2 3

SUPPLY

A
2970 1n0
2964 1n0
B
2965 2966
1n0 1n0
PROVISION FOR 1.5A 5V
1951
1
2
F952
3
4
F953
5
C
RES
+5VSWI
D
F955
PANEL-PWR-CTL
E
F
I951
3951
1R0
5952 I952
+12VSW
10u
2953
470u 16V
G
GND SUPP_GND
SUPP_GND
(..V) STANDBY
H
3139 123 5804.2
1 2 3
LC4.2E AA 7.
4 5
+12VSW
+3V3STBY
+12VUNREG
POWER_DOWN
A9
BU_LIGHT_ADJ1
A7
LAMP_ON-OFF
2968 2969
1n0 1n0
7953
L4940D2T12
11V4
5959
I959 F960
1 3
+3V3STBY +12VUNREG IN OUT
14V3
12V
COM
2959
100n
5960 5955
5956
RES
RES
SS = 4V9
5957
I956
2 3 RES
7954
3955 2961 SI2301DS-T1
10K 10n
1
8V7
I961
3958
15K
I958
0V
7955
3V3
PDTC114ET
(0V)
7952
MC34063AD
8 DCOL SWC 1
14V3
S Q
R
7 IS
I955
SWE 2
IPK
1V3
3952
1R0
TIMC 3
OSC
2956 5953
REFERENCE
6 470p 220u
VCC REGULATOR
14V3
I953 SUPP_GND
3953
5 CIN_NEG GND 4
SUPP_GND
1V2
1K0 1%
SUPP_GND
2954 3954 5954
I954
5V4
10u
RES 3K3 1%
2957
2955
470u 16V
4n7
SUPP_GND
4 5
37
6 7 8
11V6
5958 F958
+12VSW
2962
100n
SUPPLY FOR SCALER
PAN_VCC
2960
47u 16V
+3V3STBY
1
3V3
2992
100n
+3V3STBY
I995
3
6951 2V95
SS14
2995
100n
5V4
F954
+5VSWI
2958
470u 16V
6 7 8
9 10 11
+3V3STBY
5984
+3V3_PLL
5985
+3V3_ADC
5986
+3V3_DVI
5987
+3V3_IO
5988 F988
+3V3_LBADC
5989
+3V3_LVDSA
5990
+3V3_LVDSB
5991
+3V3_LVDS
7992
LF25CDT
2V5
I992 5994
3
+2V5_DDR
IN OUT
2V5
COM
2993 2994
1n0 470u 16V
+1V8
5996
7995
+1V8_ADC
LD1086D2T18
1V8
5997
I996
2
+1V8_DVI
IN OUT
1V8
COM
5998
2996 +1V8_CORE
47u 16V
9 10 11
12
1951 C2
2953 G3
2954 G3
2955 G4
2956 F5
2957 G6
2958 G6
2959 C5
2960 C6
2961 D4
2962 B6
A
2964 A3
2965 B3
2966 B3
2968 B3
2969 B4
2970 A3
2992 E8
2993 E9
2994 E10
2995 G8
2996 G9
B 3951 F3
3952 F3
3953 G3
3954 G4
3955 D3
3958 D4
5952 G2
5953 G6
5954 G6
5955 C3
5956 C4
5957 D5
C
5958 A6
5959 C5
5960 C3
5984 C10
5985 C10
5986 D10
5987 D10
5988 D10
5989 D10
5990 D10
5991 E10
5994 E10
D
5996 F10
5997 F10
5998 G10
6951 G6
7952 E4
7953 C5
7954 D4
7955 E4
7992 E9
7995 F9
F952 C3
F953 C3
E
F954 G6
F955 E3
F958 A6
F960 C6
F988 D11
I951 F3
I952 G3
I953 G3
I954 G4
I955 F5
I956 D4
F
I958 E4
I959 C5
I961 D4
I992 E9
I995 F8
I996 F9
G
H
E_14490_038.eps
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