Vizio GV46LHDTV10A Manuel de service télécharger pdf (Page 96)

CONFIDENTIAL – DO NOT COPY

Page 8-60

File No. SG-0176

3. Mode selection

In the L32 LCD TV TDA8946AJ has two functional modes, which can be selected by applying the

proper DC voltage to pin MODE.

a. Mute — In this mode the amplifier is DC-biased but not operational (no audio output).

This allows the input coupling capacitors to be charged to avoid pop-noise. The device is in mute

mode when 3.5 V < V

MODE < (VCC − 1.5 V).

b. Operating — In this mode the amplifier is operating normally. The operating mode is activated at

MODE<1.0V.

1 2 ... 91 92 93 94 95 96 97 98 99 100 101 ... 132 133

Service Manual 1
Table of Contents 2
Chapter 1 Features 4
Chapter 2 Specification 5
Page 2-3 7
10~90%RH (Non-condensing) 9
959.9mm 10
311.0mm 10
748.4mm 10
25.9kgs 10
Page 2-7 11
Main unit button 12
TV Source 12
PC Analog Mode 13
DIGITAL HD MODE 14
Video Sources 15
DTV Sources 16
Page 3-6 17
Page 3-7 18
Page 3-8 19
Page 3-9 20
Page 4-1 21
Chapter5 Pin Assignment 22
Page 5-3 24
Page 5-4 25
Chapter 6 Block Diagram 29
Page 6-2 30
Main Board Block Diagram 31
Video Board Block Diagram 32
J7 CONNECTION (TOP→BOTTOM) 33
J1 CONNECTION (TOP→BOTTOM) 33
CONNECTION (TOP→BOTTOM) 34
MT8205 Application 38
Page 8-3 39
Page 8-4 40
Page 8-5 41
(480i~1080i) F 43
(480i~1080i) G 43
(HDMI) H 43
Page 8-8 44
Page 8-9 45
Page 8-10 46
Page 8-14 50
Page 8-16 52
Page 8-17 53
MT5111 Application: 57
Page 8-22 58
MT5351 Application : 59
Page 8-24 60
Page 8-25 61
Page 8-26 62
Page 8-27 63
STANDBY MODE 69
RESET OPERATION 69
WRITE PROTECT (WP) 70
WRITE OPERATION STATUS 70
Fig D. READ TIMING WAVEFORMS 72
Fig E. RESET TIMING WAVEFORM 73
Functional Description 74
Block Diagram (16Mb x 16) 75
Mode Register Operation 77
Extended Mode Register 78
Truth Table a: Commands 79
Auto Refresh 80
Self Refresh 80
Operations : 81
Read Command 83
Write Command 84
Data Input (Write) 85
Data Output (Read) 85
WM8776 Application 85
1. Audio sample rate 86
Page 8-51 87
Page 8-52 88
Sil9011 Application 89
1. TMDS Digital Core 90
2C BUS developed for use in 91
BLOCK DIAGRAM 92
2. Switch control table 93
TDA8946 Application 94
2. Output power measurement 95
3. Mode selection 96
Chapter 9 Waveforms 97
Page 9-2 98
Page 9-3 99
CONFIDENTIAL – DO NOT COPY 100
Page 9-4 100
File No. SG-0176 100
Page 9-5 101
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Page 9-19 115
Page 9-20 116
Page 9-21 117
Page 9-22 118
Page 9-23 119
U20 input correct? 121

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Vizio GV46LHDTV10A Manuel de service Page 96

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