NAD T 163 Service Manual

Also see for T 163: Owner's manual Service manual

Contents

NAD T 163 Service Manual Manual pdf 11 page image

11SPECIAL FUNCTIONFEATUREAA KEYS PRESS ON FRONT PANELRESET FOR AH VERSION VIDEO + TONE DEFEATRESET FOR C VERSION VIDEO + TONE CONTROLSNTSC / PAL SELECTION VIDEO + MEMORYVFD ALL DISPLAY AUDIO + TAPE MONITORAM FREQ. STEP AM/FM + FM MUTECOLOUR BAR GENERATOR AUDIO + DIGITAL AUDIO(VC-version units only) (all monitor outputs will show the generated colour bar)DETAILS & WAVEFORMS ON SYSTEM TEST & DEBUGGINGT89C51RD2 (U202) main clock is at 20MHz (X202)T89C51RD2 (U201) main clock is at 20MHz (X201)UPPER - +5V supply to KEYBOARD when power upLOWER - RESET line (TCM810LENB713) whenpower upUPPER - OUTPUT ENABLE (pin 24) of EPROM(W27C02) when changing SURROUND MODESLOWER - CHIP ENABLE (pin 22) of EPROM(W27C02) when changing SURROUND MODESSCLK (pin 43 of CS49326)LRCLK (pin 42 of CS49326)MCLK (pin 30 of CS49326)NOTE: The waveforms are based on software version V2.13V.