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• Abnormal display. |
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Is waveform output from CN451 pins 3 to 5 ? |
| Is waveform output from IC401 pins 31 to 33 ? | |||||
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Are the pin 2 (VCC) and pin 12, 13 (GND) normal ? | No |
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| Yes |
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| No | |||
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| Yes |
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| Check between IC401 and |
| Check the periphery of IC401. | ||
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| CN451. |
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Check for pattern breakage of flexible PWB, check for |
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defects of display microcomputer (replace the display unit). |
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• Audio playback clrcult.
In the normal playback mode, LCD play time display functions, but no audio is heard.
Is audio waveform output from IC501 pins 15 and 16 ?
No
Yes
Is audio waveform output from IC703 pins 8 and 17.
No
Yes
Is audio waveform output from J703 pins 3 and 4.
No
Yes
Check IC201 pins 70 to 72, pin 74 and IC501 pins 9, 10, 11, 12.
Check the pins 4 and 21 of IC703.
Check for defective solder joint of audio signal line between IC703 and J703.
Check headphones jack, and periphery of headphone.
•The spindle motor fails to run. Does the head move.
Does the waveform appear on the IC201 pins 24 and 25 after |
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| Check the IC201 periphery. | ||
No | |||||
TEST mode AUTO2 completion and in this state ? |
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| Yes |
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Does waveform appear on the IC601 pin 15 ? |
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| Replace IC601. | ||
No | |||||
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| Yes |
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Does waveform appear on IC601 pins 7, 10 and 12 ? |
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| L608, IC201, IC601, CN601 and flex, etc. soldering check. | ||
No | |||||
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| Yes |
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Replace the spindle motor. |
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– 39 –