Do you have a question about the NAD C521 and is the answer not in the manual?
Warnings about invisible laser radiation when the unit is open.
Alerts users to dangerous voltage and importance of servicing instructions.
Device complies with FCC rules regarding interference.
Instructions and part numbers for replacing fuses.
Procedure for safety checks on the USA model before customer return.
Detailed technical parameters of the CD player.
Lists control functions, dimensions, and weight of the CD player.
Identifies Line Out, Digital Out, and AC power cord.
Labels all buttons and display elements on the front of the unit.
Instructions for removing side and back panel screws.
Steps to carefully lift and remove the top cover.
Steps for performing RF pattern tests, including scope settings.
Guidelines for observing waveforms and eye patterns for proper function.
Instructions for preventing electrostatic discharge when handling the optical pick-up.
Precautions and steps for checking laser diode operation and beam emission.
Steps to protect the laser diode from static damage during replacement.
Recommended setup for anti-static work, including wrist bands and mats.
Diagram showing the component layout for the transformer board.
Diagram showing the component layout for the live board.
Diagram showing the component layout for the key board.
Diagram showing the component layout for the display board.
Explanations for component specifications and critical part markings.
Internal functional blocks of the LA9240 integrated circuit.
Internal functional blocks of the LC78621ED integrated circuit.
Functional blocks of the PCM1710U DAC converter.
Functional blocks of the NE5532 operational amplifier.
Functional blocks of the TC74HC00 NAND gate IC.
Functional blocks of the LB1641 motor driver IC.
Functional blocks of the LA6541D servo driver IC.
Explains markings for critical parts and model-specific differences.
Lists all items included in the product packaging.