Main Board - LG 50PV450 Manual

Main Board P701 LVDS

Main Board

P701 LVDS Video Signal
Pin Pin Pin
Ctl Board Main Board Ctl Board
80 1 40
79 2 39
78 3 38
77 4 37
76 5 36
75 6 35
74 7 34
73 8 33
72 9 32
71 10 31
70 11 30
69 12 29
68 13 28
67 14 27
66 15 26
65 65 16 16 25 25
64 17 24
63 18 23
62 19 22
61 20 21
60 21 20
59 22 19
58 23 18
57 24 17
56 25 16
55 26 15
54 27 14
53 28 13
52 29 12
51 30 11
50 50 31 31 10 10
49 32 9
48 33 8
47 34 7
46 35 6
45 36 5
44 37 4
43 38 3
42 39 2
41 40 1
Video Signal Checks
Pin
Main Board
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56 56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71 71
72
73
74
75
76
77
78
79
80
Checks
Example Waveforms Taken from P701 pins 68 and 68,
but there are actually 20 pins carrying video, but they
are all similar. Input Signal SMPT Color Bar ll i il
1 1
Pin 68 RE2- Pin 68 RE2-
Pin 69 RE2+
TIP: Use the Control
Board side for
measurements.
Test Points are
available.
Use the Pin cross Use the Pin cross
reference chart on
the left because the
pins are inverted on
the Control Board.
149
I t Si l SMPT C l
Main Board P701 Location Main Board P701 Location
May 201 1 50PV450
B
613mV 10MSec
p/p per/div
Plasma