LG 50PJ340 Training Manual - Page 107

Main Board

Get LG 50PJ340 PDF manuals and user guides View all LG 50PJ340 manuals
Add to My Manuals
Save this manual to your list of manuals

Page 107 highlights

MAIN BOARD SECTION The following section gives detailed information about the Main board. This board contains the Microprocessor, Audio section, video section and all input, outputs. It also receives all input signals and processes them to be delivered to the Control board via the LVDS cable. The main tuner (Silicon Tuner using discreet components) which provides VSB, 8VSB and QAM is located on the main board. This board is also where the television's software upgrades are accomplished through the USB input. This board has no mechanical adjustments. The Main Board Receives its operational voltage from the SMPS: DURING STAND-BY: From SMPS • STBY 5V DURING RUN From SMPS : (STBY 5V remains): • +5V for Video processing • 16V for Audio DISTRIBUTION: • Distributes the Turn On Commands to the SMPS. • Distributes LVDS video to the Control Board. • Distributes Key 1 and Key 2 to the Front IR Board then to the Front Key Pad. • Receives Intelligent Sensor data from the Front IR Board (via SCL/SDA). • Drives front Power LEDs. • Distributes +3.3V_ST and +3.3V_MST to the Front IR Board. 107 July 2010 50PJ350 Plasma

  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • 11
  • 12
  • 13
  • 14
  • 15
  • 16
  • 17
  • 18
  • 19
  • 20
  • 21
  • 22
  • 23
  • 24
  • 25
  • 26
  • 27
  • 28
  • 29
  • 30
  • 31
  • 32
  • 33
  • 34
  • 35
  • 36
  • 37
  • 38
  • 39
  • 40
  • 41
  • 42
  • 43
  • 44
  • 45
  • 46
  • 47
  • 48
  • 49
  • 50
  • 51
  • 52
  • 53
  • 54
  • 55
  • 56
  • 57
  • 58
  • 59
  • 60
  • 61
  • 62
  • 63
  • 64
  • 65
  • 66
  • 67
  • 68
  • 69
  • 70
  • 71
  • 72
  • 73
  • 74
  • 75
  • 76
  • 77
  • 78
  • 79
  • 80
  • 81
  • 82
  • 83
  • 84
  • 85
  • 86
  • 87
  • 88
  • 89
  • 90
  • 91
  • 92
  • 93
  • 94
  • 95
  • 96
  • 97
  • 98
  • 99
  • 100
  • 101
  • 102
  • 103
  • 104
  • 105
  • 106
  • 107
  • 108
  • 109
  • 110
  • 111
  • 112
  • 113
  • 114
  • 115
  • 116
  • 117
  • 118
  • 119
  • 120
  • 121
  • 122
  • 123
  • 124
  • 125
  • 126
  • 127
  • 128
  • 129
  • 130
  • 131
  • 132
  • 133
107
July 2010
50PJ350
Plasma
MAIN BOARD SECTION
MAIN BOARD SECTION
The following section gives detailed information about the Main board. This board contains the
Microprocessor, Audio section, video section and all input, outputs. It also receives all input
signals and processes them to be delivered to the Control board via the LVDS cable. The main
tuner (Silicon Tuner using discreet components) which provides VSB, 8VSB and QAM is located
on the main board. This board is also where the television’s software upgrades are accomplished
through the USB input.
This board has no mechanical adjustments.
The Main Board Receives its operational voltage from the SMPS:
•
STBY 5V
•
+5V for Video processing
•
16V for Audio
DURING STAND-BY: From SMPS
DURING RUN From SMPS : (STBY 5V remains):
•
Distributes the Turn On Commands to the SMPS.
•
Distributes LVDS video to the Control Board.
•
Distributes Key 1 and Key 2 to the Front IR Board then to the Front Key Pad.
•
Receives Intelligent Sensor data from the Front IR Board (via SCL/SDA).
•
Drives front Power LEDs.
•
Distributes +3.3V_ST and +3.3V_MST to the Front IR Board.
DISTRIBUTION: