13
1.4.4 Common repair question
Item Question appearance
Repair contents or exchange component
1 LCD display abnormal
1. IC Socket (U4) is bad component.
2. U1 DRAM solder contact bad or bad component
3. CD-ROM GND spring malposition (solder c5V 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
2 No Power
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
3 Sound output or voice
abnormal
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
4 CD-RW device abnormal 1. IDE cable isn’t plug
2. IDE cable is bad component
3. CD-RW is bad component
5 CD-OM device abnormal 1. IDE cable isn’t plug
2. IDE cable is bad component
3. CD-RW is bad component
6 CD-ROM or CD-RW for
eject abnormal
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
7 USB mode abnormal
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
8 Function key abnormal
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
Summary of Contents for CC0
Page 10: ...6 1 3 Component Package U3 SIN 0002A U2 39SF010 70...
Page 11: ...7 U1 GLT44016 28J4 U7 2310700003...
Page 12: ...8 U2 CY7C68300A U5 24LC02N U9 U10 74CBT3384A...
Page 13: ...9 U8 APL1117 3 3V U11 BA17805 5V Q3 Q5 2SB1427 Q6 Q7 2SD1898 Q2 Q4 2N3904 Q1 2N3906...
Page 23: ...Confidential Alesis Service Manual 8 31 0142 A ALESIS CD TWIN CC0 SCHEMATIC AND PCB FILES...
Page 31: ...26 3 4 Key Parts of CD RW and CD ROM Assy MP 715 ASSY M 226 ASSY...
Page 33: ...Confidential Alesis Service Manual 8 31 0142 A ALESIS CD TWIN CC0 ECN HISTORY...
Page 34: ...Confidential Alesis Service Manual 8 31 0142 A ALESIS CD TWIN CC0 BOM...
