Supply Voltage Overview - Philips LC4.1U AA Service Manual

Block Diagrams, Testpoint Overviews, and Waveforms

Supply Voltage Overview

TV SUPPLY
SUPPLY A5
PANEL
1910
(INVERTER)
1
1200
2
3
4
1001
5
6
7
8
9
POWER_DOWN
10
STANDBY
11
BACK_LIGHT_ADJ1
12
LAMP_ON_OFF
7930
MC34063AD
3935
8 1
SUPPLY
IC
5930
+12VSW
6 2
7920
L78M08CDT
5920
+12VSW 1 3
SUPPLY
A9
5955
+3V3STBY
PANEL_PWR_CTL
A7
*
SEE DIVERSITY LIST
LC4.1U AA 6.
F903
+5VSW
A5
AUD_SUP AUD_SUP
A4
+VTUN
A5
F905
+3V3STBY
A5
+3V3STBY +3V3STBY
A8
A7
A6
A4
A3
A2
A1
+3V3STBY
A5
F906
A9
+12VSW +12VSW
+8VSW_TV
A14 A5
A2
A2
A5 +5VSW
A7
3936
A7
3937
7936
A10
A8
A7
F913
A2
5931 5932
+5VSW A1
5910 F911 +3V3STBY
A5
6910
+VTUN A1
3910
6911
-/C33
7910
F912
+8VSW_TV +8VSW_TV A2
+3V3STBY
A5
7955
A6
+1V8 +1V8
+5VSW
A5
*
7953
7954
5959
S D
G
AUDIO_SUP
A5
CONTROL
7404
*
5957
+3V3STBY
A5
A5 +3V3STBY
5961
A9 +1v8
A5 +3V3STBY
A5 +5VSW
EN 22
TUNER IF
A1
+5VSW
+VTUN
+3V3STBY
(FOR ITV ONLY)
HERCULES
A2
+3V3STBY
+8VSW_TV
3374
6005
TO 45 - 7011
+5VSW
7011
+1V8_B
14
HERCULES
+1V8_A
127
A3
+3V3STBY
HERCULES
(SUPPLY) 7001
+1V8_A
7004
CONTROL
7003
+1V8_B
7002
7061
7070
CONTROL
+5VSW
AUDIO AMPLIFIER (2x2W)
A4
AUDIO_SUP
+3V3STBY
SCALER (ANA IN)
A6
+3V3STBY
+3V3STBY
5401
+3V3_AVDD
+3V3_AVDD
5404
+3V3_DVDD
+3V3_DVDD
+1V8
5402
+1V8_AVDD
5403
+1V8_DVDD
SCALER (LVDS OUT)
A7
+3V3_DVDD
+3V3_AVDD
+3V3STBY
LVDS
1404
LCD
CONN.
+5VSW 1
DISPLAY
2 OR
PAN_VCC
1402
36
38
OR
42
TT4
CONN.
A8 SCALER IO
+3V3STBY
A5
+3V3STBY
5520
VDD
+5VSW
A5
+5VSW
5
15
3469
VGA 9 VGA_5V
CONN.
(OPT.)
11 1
A10 REAR IO CINCH
+5VSW
A5
+5VSW
J FRONT IR/LED
1007
1870
5
5
+3V3STBY
D SIDE AV
1111
1401
1
1
+3V3STBY
I AUDIO AMPLIFIER (2x5W)
(20" & 23")
1703
1
AUD_SUP
2
6460
DCC_VGA_5V
3470
E_14520_059.eps
230904