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1.4.4 Common repair question
Item Question appearance
1 LCD display abnormal
2 No Power
3 Sound output or voice
abnormal
4 CD-RW device abnormal 1. IDE cable isn' t plug
5 CD-OM device abnormal 1. IDE cable isn' t plug
6 CD-ROM or CD-RW for
eject abnormal
7 USB mode abnormal
8 Function key abnormal
Repair contents or exchange component
1. IC Socket (U4) is bad component.
2. U1 DRAM solder contact bad or bad component
3. CD-ROM GND spring malposition (solder contact +5V and GND)
4. X1 crystal is bad component
5. U3 MPU solder contact bad or bad component
6. U8 regulator is bad component (+3.3V output voltage isn' t correct)
7. C1solder short
8. Q1solder short
9. C8 is bad component
10. R68 or R73 is lack component
11. U4.2 and U4.3 is solder short
1. L2 is lack component
2. Power PCB' A for voltage is short
3. Power PCB' A to master controller connect line isn't plug
4. C3 is solder short
5. JP1 for power connector isn' t plug
6. R107 and R108 is solder contact bad
7.
R54 and R59 is solder contact bad
8. U11 regulator is bad component
9. Power switch is bad component
10. Power PCB' A is bad component
1. VR1 is bad component
2. C42 is solder contact bad
3. JP11 connector isn' t plug
4. CD-RW no music: audio cable isn' t plug
5. CD-RW no music: audio cable isn' t touch
6. Audio cable is bad component
7. JP11 connector is solder contact bad
8. JP3 connector is solder contact bad
2. IDE cable is bad component
3. CD-RW is bad component
2. IDE cable is bad component
3. CD-RW is bad component
1. JP9 connector isn' t plug
2. Solenoid is bad component or solder contact bad
3. Micro switch is bad component
4. CD-ROM eject: SW5 solder contact bad
5. CD-RW eject: SW6 solder contact bad
1. USB cable is bad component
2. CN1 connector isn' t plug
3. Repeat download USB ID program
4. U2 (CY7C68300) is bad component
5. CN1 connector solder contact bad
6. L4 or L8 solder contact bad
7. X2 crystal is bad component
8. R89 solder contact bad
9. R39 or R48 solder contact bad
1. OK key abnormal: OK key bad component or solder contact bad
2. "R" key abnormal: "R" key bad component or solder contact bad
3. LEFT key abnormal: LEFT key bad component or solder contact bad
4. RIGHT key abnormal: RIGHT key bad component or solder contact
bad
5. "W" key abnormal: "W" key bad component or solder contact bad
6. CANCEL key abnormal: CANCEL key bad component or solder
contact bad
13
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