Service Manual
Page 2
... Receiver If none of the above solutions work, reset the microprocessor: (For USA and Canada) 1. Unplug the receiver. 3. Turn the receiver off . (The Power button is necessary.) FM Antenna (T90-0841-05) RESET Resetting ...PowerPad If you want to reconfigure PowerPad, you may need to help you experience a problem. 1. Reinstall the batteries and follow the instructions in the center of the wall outlet. (Present only for more than 1 second. KRF-V7772D/VR-3080...
... Receiver If none of the above solutions work, reset the microprocessor: (For USA and Canada) 1. Unplug the receiver. 3. Turn the receiver off . (The Power button is necessary.) FM Antenna (T90-0841-05) RESET Resetting ...PowerPad If you want to reconfigure PowerPad, you may need to help you experience a problem. 1. Reinstall the batteries and follow the instructions in the center of the wall outlet. (Present only for more than 1 second. KRF-V7772D/VR-3080...
Service Manual
Page 8
...VR-3080 CIRCUIT DESCRIPTION 4-2 Pin description Pin No. Not used 43 RESET... I P.D. TUNER MUTE 18 PLL_CLK O P.D. PLL(LC72131) DATA 20 PLL_DO I P.D. Not used 17 T_MUTE O P.U. BIT 1 55 CODEC_FREQ0 I - VOLUME ENCODER INPUT A 15 ENC_B I P.D. REMOTE CONTROLLER SIGNAL INPUT 0 (FRONT PANEL) 45 REM1 I - DIR DATA DETECT 54 CODEC_FREQ1 I P.D. CODEC(CS4226) non AUDIO DETECT 59 DSP_NPCM I P.D. CODEC(CS4226) CHIP SELECT 47 CODEC_ERR I P.D. CODEC(CS4226) AC-3(DOLBY DIGITAL... CONTROLLER SIGNAL INPUT 1 (IR RECEIVER) 46 CODEC_CS I P.D. PLL(...
...VR-3080 CIRCUIT DESCRIPTION 4-2 Pin description Pin No. Not used 43 RESET... I P.D. TUNER MUTE 18 PLL_CLK O P.D. PLL(LC72131) DATA 20 PLL_DO I P.D. Not used 17 T_MUTE O P.U. BIT 1 55 CODEC_FREQ0 I - VOLUME ENCODER INPUT A 15 ENC_B I P.D. REMOTE CONTROLLER SIGNAL INPUT 0 (FRONT PANEL) 45 REM1 I - DIR DATA DETECT 54 CODEC_FREQ1 I P.D. CODEC(CS4226) non AUDIO DETECT 59 DSP_NPCM I P.D. CODEC(CS4226) CHIP SELECT 47 CODEC_ERR I P.D. CODEC(CS4226) AC-3(DOLBY DIGITAL... CONTROLLER SIGNAL INPUT 1 (IR RECEIVER) 46 CODEC_CS I P.D. PLL(...
Service Manual
Page 9
...I /O P.D. SELECTOR(NJU7312,NJU7313,TC9162) STROBE O P.D. LCD REMOTE RWR I - CD TEXT UART COMMUNICATION DATA IN O P.D. FL DRIVER(uPD780204) RESET O P.D. FL DRIVER(uPD780204) DATA OUT O P.D. PROTECTION VOLTAGE DETECT I P.D. INPUT ATTENUATOR -3dB O P.D. GND 9 SERIAL DATA I P.D. DSP(...INPUT ATTENUATOR -6dB O P.D. MAIN MUTE O P.D. IR RECEIVER DISTINCTION(IR RECEIVER EXIST:H) O P.D. LCD REMOTE REQUEST - - DSP(YSS912) INITIAL CLEAR O P.D. POWER RELAY 2 I P.D. FL DRIVER(uPD780204) STROBE I P.D. KRF-V7772D/VR-3080 CIRCUIT DESCRIPTION Pin No. 66 67 68 69 70 ...
...I /O P.D. SELECTOR(NJU7312,NJU7313,TC9162) STROBE O P.D. LCD REMOTE RWR I - CD TEXT UART COMMUNICATION DATA IN O P.D. FL DRIVER(uPD780204) RESET O P.D. FL DRIVER(uPD780204) DATA OUT O P.D. PROTECTION VOLTAGE DETECT I P.D. INPUT ATTENUATOR -3dB O P.D. GND 9 SERIAL DATA I P.D. DSP(...INPUT ATTENUATOR -6dB O P.D. MAIN MUTE O P.D. IR RECEIVER DISTINCTION(IR RECEIVER EXIST:H) O P.D. LCD REMOTE REQUEST - - DSP(YSS912) INITIAL CLEAR O P.D. POWER RELAY 2 I P.D. FL DRIVER(uPD780204) STROBE I P.D. KRF-V7772D/VR-3080 CIRCUIT DESCRIPTION Pin No. 66 67 68 69 70 ...
Service Manual
Page 17
... R83 1K PLL IC2 20 4.0V 19 1.1V R54 18 1K 22 21 0V 14 REFERENCE DIVIDER PHASE DETECTOR CHARGE PUMP UNLOCK DETECTOR POWER ON RESET 1/2 SWALLOW COUNTER 1/16,1/17 4bits 12bits PROGRAMABLE DIVIDER C 2 B I J VREF T.METER C18 47P VR1 10K IC1 : LA1837 IC2 : LC72131 IC3 : MC13028AM Q1...ST) VT 5 C8 0.1 C4 TR1 IFT IF- B COUNTRY ABB. MUTE 4 5 PLL DT 5 4 PLL CLK 3 3 PLL CE 6 2 PLL DO 1 CH.SPACE VR-3080 (1/4) KRF-V7772D (1/4) MODE CARRIER FM 98MHz AM 1000(999)kHz FREQUENCY 1kHz 400Hz MODULATION DEVIATION STEREO 67.5kHz 7.5kHz(Pilot) MONO 30% MOD ANT INPUT...
... R83 1K PLL IC2 20 4.0V 19 1.1V R54 18 1K 22 21 0V 14 REFERENCE DIVIDER PHASE DETECTOR CHARGE PUMP UNLOCK DETECTOR POWER ON RESET 1/2 SWALLOW COUNTER 1/16,1/17 4bits 12bits PROGRAMABLE DIVIDER C 2 B I J VREF T.METER C18 47P VR1 10K IC1 : LA1837 IC2 : LC72131 IC3 : MC13028AM Q1...ST) VT 5 C8 0.1 C4 TR1 IFT IF- B COUNTRY ABB. MUTE 4 5 PLL DT 5 4 PLL CLK 3 3 PLL CE 6 2 PLL DO 1 CH.SPACE VR-3080 (1/4) KRF-V7772D (1/4) MODE CARRIER FM 98MHz AM 1000(999)kHz FREQUENCY 1kHz 400Hz MODULATION DEVIATION STEREO 67.5kHz 7.5kHz(Pilot) MONO 30% MOD ANT INPUT...
Service Manual
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... 79 C69 C68 0V 21 12 2.3V 39P 39P 72 D8 A0 86 22 CSI 11 1.9V A1 87 2.4V 23 10 2.5V DIGITAL DATA IC7 DETECTOR IC7 RESET 0V R72 47K Q11 1 2 3 4 1Q 5 2Q +5V VCC 1A 1Rx/Cx 1B 1Cx ICLR 11 2CLR 2Cx 6 10 2B 2Rx/Cx 7 9 2A GND...) IC56 1.9V 87 44 2.5V 87 RAMA0 0.8V 88 88 RAMWEN 4.9V 89 89 RAMOEN 90 VSS 3.3V 91 VDD2 VDD2 92 IC51 DSP (DTS,DOLBY DIGITAL PRO LOGIC 3ST.) RAMA7 44 43 2.5V RAMA8 43 42 2.5V RAMA9 42 41 3.3V VDD2 VDD2 +5V 40 VSS2 39 1.9V 1 2 2.4V 3 4 GND VDD...
... 79 C69 C68 0V 21 12 2.3V 39P 39P 72 D8 A0 86 22 CSI 11 1.9V A1 87 2.4V 23 10 2.5V DIGITAL DATA IC7 DETECTOR IC7 RESET 0V R72 47K Q11 1 2 3 4 1Q 5 2Q +5V VCC 1A 1Rx/Cx 1B 1Cx ICLR 11 2CLR 2Cx 6 10 2B 2Rx/Cx 7 9 2A GND...) IC56 1.9V 87 44 2.5V 87 RAMA0 0.8V 88 88 RAMWEN 4.9V 89 89 RAMOEN 90 VSS 3.3V 91 VDD2 VDD2 92 IC51 DSP (DTS,DOLBY DIGITAL PRO LOGIC 3ST.) RAMA7 44 43 2.5V RAMA8 43 42 2.5V RAMA9 42 41 3.3V VDD2 VDD2 +5V 40 VSS2 39 1.9V 1 2 2.4V 3 4 GND VDD...
Service Manual
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...50 DSP AC3 49 DSP DTS 48 CODEC AC3 CODEC ERR/OVR 47 CODEC CS 46 45 REM1 44 REM0 43 RESET 0V 0V 0V 4.4V 4.9V 0V 5.0V 5.0V 42 XT1 41 XT2 40 VSS X1 39 X2 38 37... 1K BACK UP CON. R808 4.7 1/4W R805 10K + + D801 +5.8V D802 VDD 5.0V RESET R804 0V 1K Q801 R802 10K VDD C802 1u50 + 5.1V RESET IC IC81 5.1V OUT IN GND D803 R803 100K VDD R801 820 R800 1K C801 0.01 L84 ...5.3V R870 Q855 10K C858 0V 330P R872 C862 5.3V 100 100P SL16 XS8 SYSTEM CONTROL SL16 TEXT IR REPEATER OUT IR RECEIVER IN DC12V 15mA IR OUT LCD REMOTE A R866 22K R868 1K C857 1000P R871 1K VDD TEST PIN 5 CLK 75 4 ...
...50 DSP AC3 49 DSP DTS 48 CODEC AC3 CODEC ERR/OVR 47 CODEC CS 46 45 REM1 44 REM0 43 RESET 0V 0V 0V 4.4V 4.9V 0V 5.0V 5.0V 42 XT1 41 XT2 40 VSS X1 39 X2 38 37... 1K BACK UP CON. R808 4.7 1/4W R805 10K + + D801 +5.8V D802 VDD 5.0V RESET R804 0V 1K Q801 R802 10K VDD C802 1u50 + 5.1V RESET IC IC81 5.1V OUT IN GND D803 R803 100K VDD R801 820 R800 1K C801 0.01 L84 ...5.3V R870 Q855 10K C858 0V 330P R872 C862 5.3V 100 100P SL16 XS8 SYSTEM CONTROL SL16 TEXT IR REPEATER OUT IR RECEIVER IN DC12V 15mA IR OUT LCD REMOTE A R866 22K R868 1K C857 1000P R871 1K VDD TEST PIN 5 CLK 75 4 ...
Service Manual
Page 24
...32.1V 98 98 3G -32.2V 99 99 2G -32.2V 100 100 1G D901 R901 470 3.8V DOLBY DIGITAL D902 R902 470 0V Q901 3.8V DTS D903 R903 470 0V Q902 3.7V CLIP INDICATOR 0V Q903 D904 R904... 0V SPEAKER A D905 R905 470 0V Q904 3.7V LED DRIVER SPEAKER B D906 R906 470 0V Q905 3.5V IR REMOTE 0V (RECEIVE/ TRANSMIT) Q906 0V Q907 +5V +5V 3.7V R927 47K 4.9V VDD 0V 0V 4.9V 0V 0V 0V 0V 4.5V 2....3V 2.0V VDD 1 VDD 2 AC-3 3 DTS 4 CLIP 5 SP A 6 SP B 7 REM.TX 8 STAND BY 9 10 RESET 11 X2 12 X1 13 IC 14 XT2 15 XT1 16 VDD +5V +5V C915 10u10 IC91 DISPLAY u-COM 4.9V VDD X91 5MHz C911...
...32.1V 98 98 3G -32.2V 99 99 2G -32.2V 100 100 1G D901 R901 470 3.8V DOLBY DIGITAL D902 R902 470 0V Q901 3.8V DTS D903 R903 470 0V Q902 3.7V CLIP INDICATOR 0V Q903 D904 R904... 0V SPEAKER A D905 R905 470 0V Q904 3.7V LED DRIVER SPEAKER B D906 R906 470 0V Q905 3.5V IR REMOTE 0V (RECEIVE/ TRANSMIT) Q906 0V Q907 +5V +5V 3.7V R927 47K 4.9V VDD 0V 0V 4.9V 0V 0V 0V 0V 4.5V 2....3V 2.0V VDD 1 VDD 2 AC-3 3 DTS 4 CLIP 5 SP A 6 SP B 7 REM.TX 8 STAND BY 9 10 RESET 11 X2 12 X1 13 IC 14 XT2 15 XT1 16 VDD +5V +5V C915 10u10 IC91 DISPLAY u-COM 4.9V VDD X91 5MHz C911...