Sharp MD-MS200W User Manual

MD-MS200W/MD-MS200/MD-MS200H
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• Recording/playback operation
Insert a low reflection disc, and ascertain audio output by normal playback, and then set TEST REC mode.
Yes
Does the head move down, failing to start record even
when the continuous record mode is set after address?
Check voltage of pins 56 and 57 of IC401, pins 2, 4, 7, and 9 of
IC851, pins 12 and 13 of CNS601. Check whether disc is
record-inhibited.
No
Is RF waveform output TP145 in recording/playback mode?
Does level of pins 6 and 54 of IC401 and pin 22 of IC101
change depending on record and playback?
Is RF pattern output from IC201 pin 60 and CNS201 pin 2?
Yes
No
Check for soldering failure of IC201 and CNS201.
No
Check periphery of IC401 and IC101.
Check whether there is any damage in IC101, periphery of
Q101, and laser diode.
Yes
Check for defects of IC351 in head drive flexible PWB,
Q351 to 354, head, flexible PWB.
No
Yes
Yes
Is audio monitor output given in normal mode LINE IN
record?
Check waveforms of pins 111, 12, 14, 15 of IC501, pins 76 to
79 of IC201.
Is waveform obtained on IC501 pins 3 and 5?
No
Yes
Check whether the pin 24 of IC501 and the pin 75 of IC401 are
in H state.
No
No
Check whether the pin 8 of IC701 is in H state. Check whether
voltage of pins 13 to 15 of IC701 changes when the Record
Volume Up/Down button is pressed
Is audio waveform observed on the pins 18 and 19 of
IC703?
Yes
Check whether input waveform is observed on the pins 5
and 6 of IC703.

Sharp MD-MS200W Specifications

General

Brand	Sharp
Model	MD-MS200W
Category	MiniDisc Player
Language	English