Kenwood VR 3080 Service Manual - Page 7

KRF-V7772D/VR-3080 CIRCUIT DESCRIPTION Push key INPUT SELECTOR SP A SP B TUNER STEREO P. CALL P. CALL UP DOWN CD1 STEREO DISPLAY MD/TAPE1 VIDEO1 VIDEO2 VIDEO3 STEREO PRO LOGIC 3 STEREO STEREO VIDEO4 DSP AV AUX STEREO PHONO STEREO MUTE ATT OFF ON FM DISPLAY MODE AUTO/STEREO MANUAL/MONO (DOLBY DIGITAL LED : OFF ON) TONE (TUNED) +10 (light on) OFF (light off) ARENA JAZZ CLUB THEATER STADIUM CATHEDRAL TAPE2 OFF ON INPUT LEVEL 0dB -3dB -6dB (Press the key for 2 secs) ANALOG DIGITAL IR RECEIVER A(ON) OFF 4. Main microprocessor: uPD784214GF-527(X08: IC71) 4-1 Microprocessor periphery block diagram (X08)IC16 VOLUME IC TC9412 (X08)IC26 VOLUME IC TC9412 (X08)IC36 VOLUME IC TC9412 (X08)IC15 SELECTOR IC TC9162 (X09)IC5 SELECTOR IC NJU7312AL (X09)IC4 SELECTOR IC NJU7313AL (X08)IC42 TONE CONTROL IC TC9184 (X08)S91-96 (X08)S97 TACT KEY ROTARYENCODER (X08)IC91 FLDRIVER uPD780204 (X09)ED1 FL DESTYINATI ON SW (X05) TUNER UNIT (X08)IC71 MAIN UCOM µPD784214GF-527 (X08)IC3 CODEC CS4226 (X08)IC51 DSP YSS912 (X09)K2-5 SP.RELAY MUTE (X08)J81 SYSTEM CONTROL (X08)IC72 (X08) (X08)A91 (X08)J84 LCD REMOTE IR RECEIVER IRREMOTE IR RECEIVER TRANSMIT IC DESTINATION uPD17215 7