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ViewSonic
Service Manual
July 2000 - Version 1.0
VG181
THEORY OF CIRCUIT OPERATION
PIN DESCRIPTION OF U33 :
[PinName [Type
Pr
ay
fee Ss
aa
| |
| LVDSGND | 1 | GroundfortvDS_
| oO |
| 0s
| oO |
eae
[10
L202
3
3
3
| 43 |tvpsenp | i | GroundfortvDs_
A.
WPS ee
Vee for LVDS
45
|TxouT1+
|
Oo | Positive differential data output 1
| 46 | txoutt- |__| Negative differential data output?
|
| 47
|TxouTo#
|
oO | Positive differential data output 0
| 48 | txouto- | __O_| Negative differential data output
4 9 _ _ | i v o s c n o
| 1 | Groundfortvos
TXIN27
sili 5
Even pixel (first pixel) bus of Red bit 0
TXINO
| 1 __| Even pixel (first pixel) bus of Red bit 2
52
TXIN1
ae
eee Even pixel (first pixel) bus of Red bit 3
| 63 [end
|
it _| Ground of TTL input
| 54
{tine
|
1
| Even pixel (first pixel) bus of Red bit 4
te ee
| 56
TXIN4
—_
2
3
4A
37
39
41
42
Even pixel (first pixel) bus of Red bit 5
Even pixel (first pixel) bus of Red bit 6
Page 23
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