Magnavox 19MF301B Service Manual Page 54
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- TROUBLESHOOTING
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9-5
FL11.0ABLP
5. Power Supply Block Diagram
CAUTION !
Fixed voltage (or Auto voltage selectable) power supply circuit is used in this unit.
If Main Fuse (F601) is blown , check to see that all components in the power supply
circuit are not defective before you connect the AC plug to the AC power supply.
Otherwise it may cause some components in the power supply circuit to fail.
For continued protection against risk of fire,
replace only with same type 4 A, 125V fuse.
CAUTION ! :
ATTENTION : Utiliser un fusible de rechange de même type de 4A, 125V.
4A/125V
NOTE:
The voltage for parts in hot circuit is measured using
hot GND as a common terminal.
HOT COLD
MAIN CBA
HOT CIRCUIT. BE CAREFUL.
Q602
SWITCHING
CONTROL
14
3 2
IC601
T631
3
LINE
FILTER
L601
CN601
BRIDGE
RECTIFIER
D601- D604
1
2
7
8
9
10
11
12
6
5
FEED
BACK
Q601
SWITCHING
Q631
CN201
CN301
Q202,Q203
SWITCHING
Q206
SW-12V
Q402
IC202
+13V REG.
Q634
Q633
Q400
Q638,Q639
IC631
+3.3V REG.
AC601
AC CORD
4A/125V
F601
4A/125V
Q641
P-ON-H1
TO
SYSTEM CONTROL
BLOCKDIAGRAM
P-ON-H2
+5V REG.
PROTECT1
SWITCHING
P-ON+24V
+11V
11
P-ON+24V
AMP+11V
AL+5V
LCD MODULE ASSEMBLY
DIGITAL MAIN CBA UNIT
PANEL-7.1V8
PANEL+3.3V6,7
PANEL+24V4
PANEL+13V2,3
13,14
16,17
AMP+11V13,14
P-ON+24V16,17
AL+5V11
Q211, Q212
SW+24V
VCOM10
VCOM-PWM
CN3701
IC201,Q207,
Q208,Q209
DRIVE
1
2
- SERVICE MANUAL 1
- IMPORTANT SAFETY NOTICE 2
- TABLE OF CONTENTS 3
- SPECIFICATIONS 4
- < AUDIO > 5
- IMPORTANT SAFETY PRECAUTIONS 6
- Precautions during Servicing 8
- Safety Check after Servicing 9
- STANDARD NOTES FOR SERVICING 10
- Example : 12
- <Incorrect> 13
- <Correct> 13
- [TYPE A] 14
- [2] Rear Cabinet 15
- [1] Stand Assembly 15
- 4-3 FL11.0-A_DC 16
- TV Cable Wiring Diagram 17
- 4-7 FL11.0-B_DC 20
- 4-11 FL11.0-C_DC 24
- Test Equipment Required 26
- 1. Purity Check Mode 27
- 2. VCOM Adjustment 27
- 3. White Balance Adjustment 28
- HOW TO INITIALIZE THE LCD TV 29
- FIRMWARE RENEWAL MODE 30
- Software Upgrade 31
- TROUBLESHOOTING 32
- 8-2 FL11.0ATR 33
- 8-3 FL11.0ATR 34
- [Video Signal Section] 35
- [Audio Signal Section] 36
- 8-7 FL11.0BTR 38
- 8-8 FL11.0BTR 39
- 8-9 FL11.0BTR 40
- 8-11 FL11.0BTR 42
- 8-13 FL11.0BTR 44
- 8-14 FL11.0BTR 45
- 8-16 FL11.0CTR 47
- BLOCK DIAGRAMS 50
- 2. Video/Audio Block Diagram 51
- FL11.0ABLVA 51
- FL11.0ABLD 52
- 4. Inverter Block Diagram 53
- FL11.0ABLINV 53
- FL11.0ABLP 54
- 5. Power Supply Block Diagram 54
- FL11.0BBLS 55
- 9-7 FL11.0BBLV 56
- 2. Video Block Diagram 56
- 3. Audio Block Diagram 57
- FL11.0BBLA 57
- FL11.0BBLD 58
- 5. Inverter Block Diagram 59
- FL11.0BBLINV 59
- FL11.0BBLP 60
- 6. Power Supply Block Diagram 60
- FL11.0CBLS 61
- FL11.0CBLVA 62
- FL11.0CBLD 63
- FL11.0CBLBD 64
- FL11.0CBLP 65
- Standard Notes 66
- Indicates that the voltage 67
- FL11.0SCMA1 68
- FL11.0SCMA2 69
- FL11.0SCMB1 70
- FL11.0SCMB2 71
- FL11.0SCMB3 72
- FL11.0SCMB4 73
- FL11.0SCMC 74
- FL11.0SCJB 75
- FL11.0SCFA 76
- FL11.0SCFB 77
- FL11.0SCFC 78
- FL11.0SCIRA 79
- FL11.0SCIRC 80
- FL11.0SCLC 80
- FL11.0SCDA1 81
- FL11.0SCDA2 82
- FL11.0SCDA3 83
- FL11.0SCDA4 84
- FL11.0SCDA5 85
- FL11.0SCDB1 86
- FL11.0SCDB2 87
- FL11.0SCDB3 88
- FL11.0SCDB4 89
- FL11.0SCDB5 90
- FL11.0SCDB6 91
- FL11.0SCDC1 92
- FL11.0SCDC2 93
- FL11.0SCDC3 94
- FL11.0SCDC4 95
- FL11.0SCDC5 96
- BA17N5F01011 97
- Main CBA Top View [TYPE A] 97
- Main CBA Bottom View [TYPE A] 98
- Main CBA Top View [TYPE B] 99
- BA01NDF01014 99
- Main CBA Bottom View [TYPE B] 100
- BA1170F0101 1 101
- F601 4A/125V 102
- BA01NDF0102 3 A 103
- BA01NDF01023 104
- WAVEFORMS 105
- [TYPE B] 106
- WIRING DIAGRAM 107
- [TYPE C] 109
- FL11.0CWI 109
- EXPLODED VIEWS 110
- Cabinet [TYPE B] 111
- Cabinet [TYPE C] 112
- Packing [TYPE A] 113
- Packing [TYPE B] 114
- Packing [TYPE C] 115
- Mechanical Parts 116
- Electrical Parts 117
- 2011/05/11 14-3 A17N7EL.fm 118
- 2011/05/11 14-4 A17N7EL.fm 119
- 2011/05/11 14-5 A17N7EL.fm 120
- 2011/05/11 14-12 A17N2EL.fm 127
- 2011/05/11 14-13 A17N2EL.fm 128
- 2011/05/11 14-14 A17N2EL.fm 129
- JACK ASSEMBLY 130
- FUNCTION CBA 131
- 2011/05/11 14-17 A17N2EL.fm 132
- 2011/05/11 14-20 A11N5EL.fm 135
- REVISION HISTORY 136
- COMPARISON LIST OF MODEL NAME 137
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