Trouble shooting chart | |
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Spindle motor does not move
Motor no move
Go
Check the FFC connection between 24P and the loader.
Yes
Check whether “RFA5V” (+5V) voltage is normal.
Yes 
Check whether laser voltage
(2.3V for DVD & 1.9V for CD)
on Collector of Q4 and Q5
Yes
1.Whether voltage on pin 97 of U2 varies between 0 and 3.3V (3.3V for CD and 0V for DVD),
2.Whether peripheral components are eroded or badly soldered.
Yes 
Have no focus
Yes
Check/Replace the loader
No | Correct connection |
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No | Check the RFA5V power |
| supply |
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No | Check/Replace Q4 Q5. |
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No
Check/ Replace U2.
1.Check U2 pin89 FOCUS_PWM
No | signals | |
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| 2.If there are F+, | |
| signals output from U4. | |
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| FOCUS_PWN waveform |
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