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PDF Contains
Technical Data, Mechanical data, Detailed Circuit diagram with components value, PCB layout. Actual PCBs Print. Component List, Spare parts code list and Input output detail. It cover LBB1211, LBB1212, LBB1213, LBB1216, LBB1217.
It is the actual Service Manual for SQ10
XR-MT3
5. CD troubleshooting
D
� The total track number is incorrectly displayed
Is MECHA ERROR displayed ?
YES
B
Do the CD head sled to the inner ?
NO
NO
YES
Please check 3P, 4P of CN4 and 9P, 11P of IC3.
Open the CD tray by pressing "CD1/2/3 EJECT". Place CD on the tray and close the tray by selecting the corresponding "CD1/2/3 EJECT" key to close the CD tray.
Do the laser radiate normally ?
NO
YES
Please check PICK UP and Q1, L1, D1, R34. NO
After the CD TOC is read, are the number of the total tracks and playing time displayed correctly ?
NO
Do the lens vertical motion ? Please check the connection CN3 and 5P, 2P, 4P of IC3. NO
YES YES Do the disc start to spin ?
Please press CD PLAY/PAUSE key or CD SELECT key of DISC No.
YES
Please check the connection CN4 and 8P, 9P, 11P of IC3. NO
Do the CD playing and the CD time display correctly ?
NO
Do the head move to outward slowly ?
YES
Please tune the CD again.
YES
Please check the connection CN3 and 5P, 2P, 4P of IC3.
Is the audio signal come out on the speaker ?
NO
E
Please tune the CD servo circuit
YES Please push FWD key or REW key
Can you smoothly select the music ?
NO
YES
Please check the CD sleding circuit and tune the CD again.
OK
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