7521Plus / N N/B MAINTENANCE
8.3 VGA CONTROLLER FAILURE LCD NO DISPLAY
There is no display or picture abnormal on LCD.
SH5
U24
+12V
+3V
+5V |
| R7 |
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| 5 6 7 8 | ||
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| S |
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R5 |
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| 4 |
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| G |
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| D |
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FPVCC | Q3 | D |
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G |
| 1 2 | 3 | |
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S |
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ENABKL_VGA# |
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RP31,RP33,RP24 FA6,FA8,FA10
RP32,RP26,RP36 FA7,FA9,FA11
+3V |
| +5V | +5V |
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+3V |
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| J1 | |
SH11 |
| R149 | L9 | ||
R18 | ENABKL_VGA |
|
| 1 | |
R150 |
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Q2 |
| Q15 LID_OPEN# | Q14 |
| 2 |
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SW1 |
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| 3 |
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| Q4 | 45 | BLADJ | 4 |
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| 24 | |||
LCD COVER SW | U14 |
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H8 | SH20 |
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| J2 | |||
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| 1 |
SH5 |
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| L4 |
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SH21
SIS 630S
VBHSYNC L537
VBVSYNC L536
VBBLANK# L534
VGCLK L540
VBCLK R527
R[2~7]_301
G[2~7]_301
B[2~7]_301
22
23
25
26
27
|
|
| 2 | |
U2 | 32 | TXCLKOUT+ | 7 | |
33 | TXCLKOUT- | 11 | ||
| ||||
LVDS | 40 | TXOUT0+ | 16 | |
41 | TXOUT0- | 20 | ||
| 38 | TXOUT1+ | 8 | |
DS90C363MTD 39 | TXOUT1- | 12 | ||
| 34 | TXOUT2+ | 15 | |
| 35 | TXOUT2- | 19 | |
SH5
LCD
111
