8050D N/B Maintenance
8.4 External Monitor No Display
There is no display or picture abnormal on CRT monitor, but LCD can normally display.
P7
U710
ATI_M10
+5V_H |
|
| +5V_H |
|
|
|
|
|
|
|
|
|
| R703 | |
R6 | 4.7K |
|
|
|
|
|
|
|
|
|
|
| |||
|
|
|
|
|
|
|
|
|
|
|
|
|
| ||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| R1 |
|
| R10 | 4.7K |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Q6 |
|
|
|
|
|
| L12 |
|
|
| |
ATI_CRT_DDCK |
| R785 | 0 | 2N7002 |
|
|
|
|
|
| 120Z/100M |
|
| CHAGND | |
|
|
|
| Document |
|
|
| ||||||||
|
|
|
|
|
|
|
|
|
|
| |||||
|
|
|
|
| Secret |
| +3V |
|
|
|
|
| |||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |
|
|
|
|
|
|
|
| Q5 |
|
|
|
|
|
|
|
ATI_CRT_DDDA |
| R138 | 0 |
|
|
|
| 2N7002 |
|
|
|
|
|
|
|
|
|
|
|
|
|
| R804 |
|
|
|
|
| |||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |
|
|
|
|
|
|
|
|
|
| 8.2K |
|
|
|
| 15 |
|
|
|
|
|
|
|
|
|
|
|
| L13 |
|
| |
|
|
|
|
|
|
|
|
| P13 |
|
|
|
|
| |
|
|
|
| +5V_H |
|
|
|
| CRT IN# | BEAD 600Z/100M | R9 | 1K | 5 | ||
|
|
|
|
|
|
| U715 |
|
| ||||||
|
|
| MiTac |
|
|
| ICH |
| L11 |
|
|
| |||
|
|
|
| Q7 |
|
|
|
|
|
| 120Z/100M |
|
|
| |
ATI_CRT_VSYNC | R136 | 0 | 2N7002 |
|
|
|
|
|
|
|
|
|
| 14 | |
| ConfidentialR139 0220Z/100M |
|
|
|
| L7 |
|
|
| ||||||
|
|
|
|
|
| Q8 |
|
|
|
|
|
|
|
| |
ATI_CRT_HSYNC | R137 | 0 |
|
| 2N7002 |
|
|
|
|
| 120Z/100M |
|
| 13 | |
ATI_CRT_RED |
| R783 | 0 | L58 | 220Z/100M |
|
|
|
|
|
|
|
| 1 | |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| 2 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| 3 |
ATI_CRT_GREEN | R135 | 0 | L59 | 220Z/100M |
|
| L74 | 120Z/100M |
|
|
|
| 12 | ||
ATI_CRT_BLUE |
|
|
| L60 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| 6,7,8,16,17 |
CHAGND
0
0
GND
P12
J702
CRT
CONNECTOR
113