CD-MD3000H/CD-MD3000W
Y Normal playback
When it has been confirmed that EEPROM value is normal in the TEST mode
Is initialization performed normally when high reflection disc isDoes the playback time display advance?
played back?Yes
NoNo
Check IC1201.
Does disc rotate normally?
Is lead-in switch turned on in the TEST mode when the pickup is on
No
the innermost periphery? (Is the pin 63 of IC1401 on L level?)
Yes
No
Check the position as stated in item "Lead-in switch positionCheck SW1936, soldered joints of mechanism switch PWB, and
measurement mode".periphery of pin 6 of CN1932.
Y Record and playback operations
Insert the low reflection disc, and after verifying the audio output in the normal mode playback set the record/playback TEST mode.
Is recording performed after displaying TEST REC?.Check whether the disc is record-prohibited.
No
Yes
Is RF waveform output to the pin 1 of IC1201 or TP1201
when playback is performed after recording?Yes
No
Does the level of pins 3,26 and 39 of IC1401 in record stateCheck periphery of IC1401.
differ from that in playback state?No
Yes
Does RF pattern appear on the pin 50 of IC1201 duringCheck for IC1201 soldering failure.
recoading?No
Yes
Check IC1300 to 1302 and periphery of CN1300.
Is output waveform given to the pins 22 and 24 of CN1501 inCheck the main PWB.
AUX input record in the Normal mode?
No
Yes
Is input waveform given to the pins 3 and 5 of IC1701?Check connection between IC1701 and CN1501.
No
Yes
Check the periphery of IC1701, and the pins 70, 71, 72, and
73 of IC1201.
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ACEC
SHARP
