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MD-MT270H
Yes
Check whether there is defective solder joint of audio signal
line between IC703 and J703A
No
Yes
Is audio waveform output from J703A pins 2 and 3.
Check the periphery of IC703.
No
Yes
Is audio waveform output from IC703 pins 8 and 17.
Check the periphery of IC501.
No
• Audio playback circuit
Is PWM signal output from IC501 pins 68, 69, 72, 73?
Check headphones jack, and periphery of headphone.
Although the playback time display is acting., no sound is given during playback in the normal mode.
• The spindle motor fails to run. Does the head move
No
Does the waveform appear on the IC201 pins 26 and 27 after
TEST mode AUTO2 completion and in this state?
Check the IC201 periphery.
Does waveform appear on IC601 pins 60, 61, 62, 63.
Replace the spindle motor.
Yes
No
IC601, CN601 and flex, etc. soldering check
Yes
Summary of Contents for MD-MT270HS/BK
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