MD-MS200W/MD-MS200/MD-MS200H
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No
• Normal playback
Is initialization performed normally in case of high reflection
disc normal playback?
When the address up to the sector address has been proved to be normal in the test mode.
Yes
No
Does the playback time display act?
Check IC201 and IC202 connection line.
Is an attempt tp read repeatebly the TOC section of low
reflection disc made?
No
Check whether the disc is new one.
Yes
Position check in INNER mode
Yes
• Audio playback circuit
Although the playback time display is acting, no sound is given during playback in the normal mode.
No
Is audio waveform output from IC501 pins 26 and 27?
Yes
Is audio waveform output from IC703 pins 18 and 19.
No
Check the pins 5 and 6 of IC703.
Yes
Is audio waveform output from J703 pins 4 and 5.
No
Check whether there is defective solder joint of audio signal line
between IC703 and J703.
Check headphones jack,and periphery of headphone.
Yes
• The disc motor fails to rotate.
No
Check the periphery of IC201.
Is waveform observed on the pins 58 and 59 of IC201 in
focus gain rough adjustment step?Is audio waveform Is
Yes
waveform observed on the pins 21 of IC601?
Replace IC601.
Yes
No
Check solder joints of L607, IC201, IC901, CNS601, and flexible
PWB.
No
Check the lead-in switch SW901, solder joint of mechanism
PWB, and the pin 8 of CNS601.
No
Is the read-in switch turned on when the optical pickup is
moved to the innermost periphery in NORMAL mode?
(Is the pin 48 of IC401 on L level?)
Check IC201 pins 76 to 78, pin 80 and IC501 pins 11, 12, 13, 15.
Do the pins 16 and 21 of IC901 waveform observe?
Replace the disc motor.
Yes
Содержание MD-MS200H
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