Symptom/Error |
| FRU/Action in Sequence | |
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No | beep | during | Speaker |
POST | but | system |
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runs correctly. |
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LCD-Related Symptoms
Symptom/Error |
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| FRU/Action | in | Sequence |
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LCD | backlight | not |
| 1. | Reseat | the | LCD | connector. | ||||||
working |
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| 2. | Check | the | LCD | inverter | ID | ||||
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LCD | too | dark |
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| 3. | LCD | FPC |
| ASM |
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LCD | brightness |
| 4. | LCD inverter |
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cannot | be | adjusted |
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| 5. | LCD |
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LCD | contrast | cannot |
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| 6. | System board |
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be | adjusted |
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LCD | screen | unread- |
| 1. | Reseat | the | LCD | connector. | ||||||
able |
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| 2. Check the LCD inverter ID | |||||||||
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Character | missing |
| 3. | LCD | FPC |
| ASM |
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pels |
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| 4. | LCD inverter |
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Screen | abnormal |
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| 5. | LCD |
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Wrong color |
| dis- |
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| 6. | System board |
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played |
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LCD has extra hori | - 1. | Check | the | LCD | inverter | ID | ||||||||
zontal | or | vertical |
| lines | LCD | FPC |
| ASM |
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displayed. |
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| 3. | LCD inverter |
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| 4. | LCD |
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| 5. | System board |
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Keyboard-Related Symptoms
Symptom/Error |
| FRU/Action in Sequence |
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Keyboard | (one or | 1. | Reseat the keyboard | cable. |
more keys) | doesn't | 2. | Keyboard |
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work. |
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| 3. | System board |
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Indicator-Related Symptoms
Symptom/Error |
| FRU/Action | in Sequence |
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Indicator incorrectly1. Reseat the LED board. | |||
remains | off | or on, but | LED board |
system | runs | 2. | |
cor- | System board | ||
rectly. |
| 3. | |
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Power-Related Symptoms
Symptom/Error | FRU/Action in Sequence |
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Power | shuts down | 1. | Battery |
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during | operation. | 2. | AC Adapter |
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| 3. | DC/DC & Charger board | ASM |
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| 4. | System board |
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