AIWA CDCX447
Service Manual

3. CD test mode functions Mode Start Mode Operation Key LCD Display All LCD light up Operation Contents Activate test mode � All servo off Load / Unload All LCD light up Chucking � Laser on � VCC on

� Continual focus search (The pickup lens repeat the Search Mode RANDOM full-swing) * NOTE 1 � TOC reading Play Mode REPEAT 1 � Display Track No. and Play time � Display Level/Ing. Traverse Mode Stop Mode INT REPEAT � Display Track No. and Play time All LCD light up � Normal playback � Same operation as search mode if TOC cannot be read Playback pause status Wait status � Focus servo � Tracking servo � CLV servo � SLED servo Tracking servo off � All servo off � Laser on/off � Sled servo � Check mechanism operation � Pickup moves to inner track � Check APC circuit � Laser current measurement � Check focus error waveform

� Pickup moves to outer track Sled Mode All LCD light up

� Do not insert the CD disc when checking the search mode. � Press the REPEAT key to release each mode. * NOTE 1 : There is a case that the CD cannot be operated owing to the protection circuit being operated when heat builds up in the driver IC if the focus search is opereated continually for more than 10 minutes. In this case, the power supply should be switched off for 10 minutes until the heat has been reduced and then re-start.

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