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File name amc_cdm7_laser_adjustment_procedure-01b.pdf

AMC CDM7 LASER ADJUSTMENT PROCEDURE ADJUSTMENT POINTS DIAGRAM: LASER CURRENT ADJUSTMENT: The integrated circuitry used in the CD PCB eliminate the need for most adjustments by incorporating self adjusting circuitry. However, when parts in the servo circuitry or CD mechanism are replaced, a laser current adjustment should be performed. Please follow the steps below: 1. Insert the test disc (Sony Type 4, YEDS 18). 2. Make sure the power is turned OFF. 3. Connect a high impedance voltmeter across the test points labelled LASER ADJ. 4. Turn the power ON and press the Play button. 5. When track 1 starts playing, adjust R127 to 50mv +/-2mV specification.