Block Diagram Supply 42 - Philips LC4.8A Service Manual

Block Diagrams, Testpoint Overviews, and Waveforms

Block Diagram Supply 42"

SUPPLY 42"
MAINS FILTER + STANDBY PART A
A1
5400
1308 5401
5403 1450
1400
1
2
MAINS
F4A
MAINS INPUT
2 FILTER
1
6506
DF06M
+
-
MAINS FILTER + STANDBY
A3
PART B HOT
COLD
1
5D00
5D01
5D03
1D00
2
MAINS
T4A
FILTER
LC4.8A AA 6.
SUPPLY PART A
A2
3810 25V_HOT_A
3
6807
GBJ6J
400V_HOT_A
+
-
4
2816
2815
China
7017
7018
PROTECTION
HOT
STANDBY
SA2
COLD
+5V2
1 1
2 2
CONTROL
3 3
7505/7509/7560/
1401
5504
1 1
2 2
T1A
2503
3406
1 1
2 2
3 3
4 4
A4 SUPPLY PART B
4
1D50
3H10
25V_HOT_B
3
6H07
GBJ6J
400V_HOT_B
- +
2H15 2H16
China
7U17
7U18
PROTECTION
28
HOT
3028
BIAS SUPPLY 3000
5017 6080 6077 6078 5010
2003
5007 5008
7005
STP15NK50ZFP
5001
7007
7001
HIGH
MC34067P 15
6
SIDE
VCC
DRIVE
11
OSCC 5040
7
3007
CONTROL
14 4
OA
7
ERROR 7006
STP15NK50ZFP
12 2
OB
11 SOST
7008
10
FI
SOFT LOW
10
START
SIDE
5
VREF
+ DRIVE
CURRENT
9
7004
7009
OVER
VOLTAGE
PROTECTION
HOT
Prot-OVV
PROT_AUDIOSUPPLY
STANDBY
COLD
HOT
5505
5
7100
5104
7101
3
7105
2
7102
1
3104
CONTROL 3V MAX
3150
1V MAX STBY
3127
4
3100 3
6150 6151 3155 3156
3U28
HOT
BIAS SUPPLY 3U00 6U79 6U77 6U78
5U17 5U10
2003
8
5U07 5U08
7
7U05
STP15NK50ZFP
5U01
7U07
7U01
HIGH
15
MC34067P 6
SIDE
VCC
DRIVE
11 OSCC
5U40
7 3
CONTROL
14 4 5
OA
7 7U06
ERROR
STP15NK50ZFP
12 2
OB
11 7U08
SOST
10
FI
SOFT
LOW
10
START SIDE
5
VREF
+
DRIVE
CURRENT
9
7U04
7U09
OVER
VOLTAGE
PROTECTION
HOT
COLD
4 1
7002
7030
TCET1102 DC_PROT
DC_PROT
3 2
5002
8
6044
5027 STPS20L45CT
9
7
3
+12V
10 2 4
3
2020
2
5028
11
1 +24Va
1
3 12
2022
5
13
6021
5025
STTH2003CFP
14
1
6014
15 2
7010
5026 TL431ACD
16
3
VS Voltage
Adj.
COLD
+5V2-RELAY-IO2_PWM
N.C.
7507
7506
3534 3539
7512
STANDBY
RES
RES
5500
7511
6504 3509
5110 VTUN
6 RES
6140 +11V
7
2141
8
10
+12V
+8V6
6107
7131
RES
5103 2513 5506 +5V2
3128 3124 6122 3113 2512
STANDBY
1
STANDBY: LOW = ON
7501 HIGH = STBY
TCET1102
2
OVERVOLTAGE
7531
PROTECTION
+5V_SW
3158
PROT-OVV
1 4
7150
TCET1102
2 3
3U57 3U52
COLD
4 1
7U02
DC_PROT
TCET1102
DC_PROT
+24V
1
3 2
2
2U22
3
5U02
4
9
10
11
1U07 2B91
5B93
12
T5A
6B91
13
5B91
6U21
5U25
14 STPS20H100
1
6B93
2B93
15 2 5B92
7U10
TL431ACD
5U26
16
3
3U24
VS Voltage
Adj.
COLD
CONNECTIONS
SA1
1316
1
2
3 TO
DISPLAY
4
5
+12V_A
4
3
2
+12V_+24V
1
1M10
TO 1M10
1
AL
2
AMBI LIGHT
1M03
9
TO 1M03
+5V_SW 5
B5E
VIPER
2
POR
1M46
8
11
TO 1M46
9
B1B
4
DC/DC
CONNECTIONS
3
6
7
5
1317
1
2
TO
3
DISPLAY
4
+24V_2
1 5
2
3
4
1M02
DC_PROT 7
VSND_POS
6
TO 1M02
5
SA3
4
AUDIO
3
2
VSND_NEG
1
F_15420_051.eps
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