Instruction/ maintenance manual of the product C420 NAD
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NAD C 420 stereo AM/FM tuner . NAD Electronics International, 633 Granite Court, Pickering, Ontario, Canada L1W 3K1, (800) 263-4641, www .NADelectronics.com. $249 U.S. Dimensions: 435mm W × 70mm H × 285mm D. Net weight: 8.8 lbs (4kg). W arranty: two years parts and labor .
steps of 50kHz. Th e AM tuning steps are 10kHz (9kHz f or the 230V ver sion). The RDS PS (Pr ogram Service) automatically display s the nam e of the r adio station y ou are listenin g to. Th e RDS RT (Radio T ext) butt on displays an y additional inf orma- tion broa dcast b y the r adio sta- tion, such as pr ogram f ormat, song titles , and so on.
62 audioXpress 6/02 www .audioXpress.com ■ By Nancy and Duncan MacArthur Some years ago we moved toward a minimalist audio system: one source, one volume control, one amplifi- er , and one set of speakers. In the process we elimi- nated much equipment, including our old Dynaco FM-5 tuner .
eight in dividual wires . The shiel ded MOSFET RF fr ont en d sits ju st be- hind th e two an tenna connect ors . A San yo LA7218 an d LA1837 chip set handl es PLL frequen cy s ynth e- sis and AM/FM tunin g and RDS d e- coding oper ations . The EEPR OM preset st ora ge m emory chip is und er the wid e ribbon cable .
mance w as 54dB at 1kHz. THD + N at 1kHz was 0.087% mon o, and 0.29% ster eo. During distortion testin g, I enga ged th e test set 80kHz lo w-pass filter to limit the out-o f-band n oise . THD from 100–10kHz, m ono, did n ot ex ceed 0.22%. The m ono au dio distortion residual w avef orm s hows mainly the secon d harmonic , ov erlaid with noise .
An important point after buying a device NAD C420 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought NAD C420 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data NAD C420 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, NAD C420 you will learn all the available features of the product, as well as information on its operation. The information that you get NAD C420 will certainly help you make a decision on the purchase.
If you already are a holder of NAD C420, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime NAD C420.
However, one of the most important roles played by the user manual is to help in solving problems with NAD C420. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device NAD C420 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
