Flow Chart of Troubleshooting
LCD_DATA(13)
LCD_DATA(14) LCD_DATA(15)
LCD_DATA(12) LCD_DATA(11) LCD_DATA(10)
LCD_DATA(9) LCD_DATA(8) LCD_DATA(7) LCD_DATA(6) LCD_DATA(5)
VCCD_2.9V |
|
|
|
| VCCD_2.9V |
| 1 |
| 6 |
|
|
| 2 |
| 5 |
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|
|
|
|
|
| ZD304 |
R320 | 3 |
| 4 |
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| |
| 1 1 |
| 2 | 2 |
|
| 3 3 |
| 4 | 4 |
|
| 5 5 |
| 6 | 6 |
|
| 7 7 |
| 8 | 8 |
|
| 9 9 |
| 10 | 10 |
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| 11 11 |
| 12 | 12 |
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| 13 13 |
| 14 | 14 |
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| 15 15 |
| 16 | 16 |
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| 17 17 |
| 18 | 18 |
|
| 19 19 |
| 20 | 20 |
|
| 21 21 |
| 22 | 22 |
|
| 23 23 |
| 24 | 24 |
|
| 25 25 |
| 26 | 26 | HDC302 |
| 27 27 |
| 28 | 28 |
|
| 29 29 |
| 30 | 30 |
|
| CN CN |
|
|
| |
| 13 | 23 |
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|
C338 | C339 |
|
|
| C340 |
LCD_DATA(4) LCD_DATA(3) LCD_DATA(2) LCD_DATA(1) LCD_DATA(0)
LED+_13.5V
MLCD_CS LCD_ADS LCD_WEN
|
| VBAT |
|
|
|
| L200 |
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| |
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| U404 |
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|
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1 | SW | R215 |
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CAP 8 |
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| ||
2 | GND | LED 7 |
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| LED+_13.5V |
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| |
3 | GND | CTRL 6 |
| R217 | LCD_BRIGHTNESS |
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| |
4 | GND | VIN 5 |
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| C218 | R218 | C219 |
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| C220 |
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10-9
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