Block Diagram Supply - Philips LC4.8E AB Service Manual

Block Diagrams, Test Point Overviews, and Waveforms

Block Diagram Supply

SUPPLY 37"
A1 MAINS FILTER + STANDBY
5303
5305
1308
5306 1350
1314
2
2 3
MAINS
T5AH
1 FILTER
1 4
HOT
COLD
6306
DF06M
1315
- +
T1AE
2303
LC4.8E AB 6.
A2 SUPPLY
3318 2319 6304 25V_HOT
6307
GBJ6J
400V_HOT
+
-
5007 5008 399V_HOT
7001
MC34067P
11
OSCC
3007 CONTROL
399V_HOT
7
ERROR
7011
25V_HOT
7012
11
SOST
SOFT
START
5
VREF
+
CURRENT
1
4 PROTECTION
7004
7307
7009
TCET1102
OVER
2 3
VOLTAGE
PROTECTION
SA2 STANDBY
+5V2
1 1
2 2
CONTROL Prot-OVV
3 3 7505/7509/7560/
PROT_AUDIOSUPPLY
5504 5505
1 1
2 2
1
2
N.C.
3
4
24
HOT
4
BIAS SUPPLY
3
3000
5017 6025 6024 5010
400V_HOT
5011
2003
7005
STP15NK50
5001
7007
HIGH
15
6
SIDE
VCC
DRIVE
7
5012
14 4
OA
7006
STP15NK50
12 2
OB
7008
10
FI
LOW
10
SIDE
DRIVE
9
5002
PRINTED
COMPONENT
HOT
SA2
SA1
COLD
HOT
5500
5110
5 6
7100
7101 5104 7
3
7105
8
2
7102
1
10
3104
CONTROL
3V MAX
3150
1V MAX STBY
3127 3128
4 1
7501
TCET1102
3100 3 2
3158
6150 6151 3155 3156
PROT-OVV
1 4
7150
TCET1102
2 3
COLD
3057
1
7002
TCET1102
2
7003
3031 DC_PROT
6019
STPS20L40CFP
+12V
4
3
2020
2
1
2029
5025 +24Va
6021
2022
6041
5026 2045
7010
TS2431
VS Voltage
Adj.
2042 +24Vb
5021
6031
6040
2049
5022
1M02
DC_PROT
7
1007 2009 VSND_POS
5020 6
T5A
5
6029
GND_SND
5018
4
3
6030
2
2021
5019 VSND_NEG
1
COLD
7507
7506
7512
STANDBY
7511
6504 3509
VTUN
RES
6140
+11V
2141
+12V
+8V6
6505
7131
RES
2513
5103 5506 +5V2
2512
3124 6122 3113 STANDBY
STANDBY: LOW = ON
HIGH = STBY
OVERVOLTAGE
7531
PROTECTION
+5V_SW
CONNECTIONS
SA1
1316
1
2
3 TO
DISPLAY
4
5
1317
1
2
+12V_A
4
3
TO
3 4
DISPLAY
2 5
+12V_+24V
1
1M10
TO 1M10
1
AL
2
AMBI LIGHT
(Optional)
TO 1M02
SA3
AUDIO
1M03
TO 1J00(1M03)
+5V2-RELAY-IO2_PWM 9
N.C.
B16
5
+5V_SW
CONNECTIONS
1M46
8
11
9 TO 1J01(1M46)
B16
4
CONNECTIONS
3
6
7
5
F_15420_025.eps
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