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G--D

D779

SERVICE MANUAL

AV Digital Home Theater Receiver

Effective : February, 2002

S-0000A

NOTES

●

PC boards shown are viewed from parts side.

●

The parts with no reference number or no parts number in the
exploded views are not supplied.

●

As regards the resistors and capacitors, refer to the circuit diagrams
contained in this manual.

●

Parts marked with this sign are safety critical components. They

must be replaced with identical components - refer to the appropriate
parts list and ensure exact replacement.

Содержание AG-D7900

Страница 1: ...parts with no reference number or no parts number in the exploded views are not supplied As regards the resistors and capacitors refer to the circuit diagrams contained in this manual Parts marked wit...

Страница 2: ...ONS 3 SAFETY INSTRUCTIONS 4 MEASUREMENTS AND ADJUSTMENTS 5 FIP DISPLAY 8 DISPLAY PIN CONNECTION 9 IC BLOCK DIAGRAMS AND PIN FUNCTIONS 10 EXPLODED VIEWS AND PARTS LIST 22 PC BOARDS AND PARTS LIST 24 IN...

Страница 3: ...Total Harmonic Distortion 1 kHz Mono 0 4 Stereo 0 5 Frequency Response 30 Hz 15 kHz 1 1 5 dB Stereo Separation 1 kHz 40 dB Signal to Noise Ratio Mono 75 dB Stereo 70 dB AM Tuner Section Tuning Range 5...

Страница 4: ...hrown out with the household waste SAFETY CHECK AFTER SERVICING After servicing make measurements of leakage current or resistance in order to determine that exposed parts are acceptably insulated fro...

Страница 5: ...400Hz ADJUSTMENT POINT MEASUREMENTS AND ADJUSTMENTS 100 40 kHz Dev E UK 100 75 kHz Dev US AM LOOP ANT ANT TERMINAL CT10 PACK1 IC11 J208 VR11 VR13 IC12 T102 FM ANT VR12 J207 J205 L104 L105 T101 PACK D...

Страница 6: ...the indication of VTVM of the wave form of scope to be maximum BAND Step Frequency Adjust for Adjustment 1 610 kHz Maximum sensitivity T102 L104 US C 610 kHz Maximum sensitivity T102 L104 2 1510 kHz M...

Страница 7: ...several times 5 FM AM AUTO STOP LEVEL ADJUSTMENT FM Signal Generator Connect to FM ANT Jack FM IN through the dummy AM Signal Generator Connect to AM ANT Coil through the Loop antenna J205 J207 DC Vol...

Страница 8: ...g g M P10 B m m m m m m m m 2d P11 CHURCH h h h h h h h h 2e P12 DISCO j j j j j j j j 2c P13 STADIUM k k k k k k k k 2g P14 HALL b b b b b b b b 2f P15 THEATER a2 a2 a2 a2 a2 a2 a2 a2 2b P16 PCM a1 a...

Страница 9: ...3G 4G 5G 6G 7G 8G 9G 10G NP Pin No 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 P14 P13 P12 P11 P10 P9 P8 P7 P6 P5 P4 P3 P2 P1 NX Pin No 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 F2 F2 NP NX NX NX NX P22 P...

Страница 10: ...I Reset Input 34 REMOTE IN I Remote Control Sensor Data Input 35 BUS IN NC I System Remote Control Input No Connection 36 HEADPHONE IN O Headphone JACK INPUT H Connet to GND 37 E VOL DATA O 38 E VOL C...

Страница 11: ...11...

Страница 12: ...se Detection of AC 3 data not use PCM output from Sub DSP Output terminal for PLL to be connected to ground through the external analog filter circuit Ground for PLL circuit 3 3V power supply for core...

Страница 13: ...ital output terminal A Analog terminal 100 99 98 97 96 95 94 93 92 91 90 89 88 87 86 85 84 83 82 81 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 80 79 78 77 76 75 74 73 72 71 70 68 67 6...

Страница 14: ...SDIA1 SURENC KARAOKE MUTE CRC AC3DATA DTSDATA NONPCM LS RS C LFE SDIBSEL SDIB Interface SDOA Interface SDIA Interface SDIA Interface ERAMUSE 24 16 Sub DSP SDIASEL 24 16 Main DSP AC 3 Pro Logic DTS dec...

Страница 15: ...8 39 40 41 42 33 32 31 30 29 28 27 26 25 24 23 22 volume volume volume tone tone volume volume M62446FP ELECTRONIC VOLUME INPUT IC31 AV4527VQ ADC DAC INPUT IC42 ADC LIN LIN RIN RIN HPF FOMAT CONVERTER...

Страница 16: ...ASSIGNMENT 74HCU04AFN IC40 LOGIC SYMBOL TRUTH TABLE 1 2 3 4 5 6 7 1A 1Y 2A 2Y 3A 3Y GND 6A 6Y 5A 5Y 4A 4Y Vcc 14 13 12 11 10 9 8 A L H Y H L 1A 1 3 5 9 11 13 2A 3A 4A 5A 6A 1Y 2Y 3Y 4Y 5Y 6Y 2 4 6 8...

Страница 17: ...ry DAIF Decoder AC 3 MPEG Detect Clock Generator Error Detect DEM X tal Oscillator 96kHz Detect Audio I F uP I F RX1 FS96 DAUX LRCK BICK SDTO DIF0 DIF1 DIF2 OCKSO TVDD 4 OCKS1 CM0 CM1 AVSS AVDD R MCKO...

Страница 18: ...bits PHASE DETECTOR CHARGE PUMP UNLOCK DETECTOR UNIVERSAL COUNTER POWER ON RESET CCB I F 12bits PROGRAMMABLE DIVIDER DATA SHIFT REGISTER LATCH PD AIN AOUT IFIN XOUT FMIN AMIN CE DI CL DO VDD VSS BO1 B...

Страница 19: ...T R S R COM R S R S R COM R S R S R COM R S R COM DATA CK LEVEL SHIFTER 2 1 2 1 3 4 2 5 6 3 7 4 1 2 1 3 4 2 5 6 3 7 4 1 3 4 5 6 7 8 9 10 14 28 11 12 13 27 26 25 24 23 22 21 20 19 18 17 16 15 LATCH CIR...

Страница 20: ...ut2 Vout3 SW4 BLOCK DIAGAM NJM2296M MAIN IC96 SW3 GND SW5 Vin2 Vin3 Vin4 Vin5 1 15 11 16 10 14 12 2 9 7 5 4 6 8 3 20K 20K 20K 20K 20K 75 dirver 75 dirver 1 2 3 4 8 LA6462M LA6458M PIN FUNCITON 1 A OUT...

Страница 21: ...3 Base TO 126 TO 92 123 123 123 1 Base 2 Collector 3 Emitter KSA614Y 2SB1186AE KSD288Y 2SD1763AE TO 220 123 1 INPUT 2 GND 3 OUTPUT MC7812C MC7805C TO 220 123 1 INPUT 2 OUTPUT 3 GND MC7912C TO 220 123...

Страница 22: ...13 x2 S4 30 x2 S13 x2 24 S12 x2 36 35 S4 S10 S5 x21 1 19 3 6 8 38 4 7 15 14 x2 10 9 x2 5 x2 19 x2 S5 x2 25 x2 26 28 29 x2 31 x2 27 37 33 34 32 x5 S5 15 14 11 13 18 17 x3 16 S5 x5 16 x2 S1 x2 S1 x11 S1...

Страница 23: ...N KHG1A050 23 9A06755300 FOOT RUBBER BLACK KKL1A012 24 9A09337700 PANEL REAR CKF9A203Z 25 9A01375500 PCB HOLDER KHE170 26 9A06327100 SUPPORT CUSHION KHG1A104 27 9A09334210 MAIN PCB ASSY COP11478C 28 9...

Страница 24: ...24...

Страница 25: ...25...

Страница 26: ...26...

Страница 27: ...27...

Страница 28: ...R CARBON 4 7 OHM 1 2W J T101 9A09229500 IFT FM T102 9A08125400 IFT AM VR11 9A09340500 R SEMI FIXED 10K OHM VR12 9A09340600 R SEMI FIXED 22K OHM VR13 9A09340500 R SEMI FIXED 10K OHM X101 9A08883700 CRY...

Страница 29: ...800 JACK BOARD L501 L505 9A08946000 COIL SPEAKER OL91 9A08946100 OUTLET 2P Q511 Q520 9A08951200 TR KTA1268GRT Q541 Q545 9A08951200 TR KTA1268GRT Q556 Q565 9A08951300 TR KTC3200GRT Q581 Q585 9A08951200...

Страница 30: ...ED ACCESSORIES REF NO PARTS NO DESCRIPTION REMARKS 9A08901100 OWNER S MNL E F CQX1A707Z 9A08763300 REMOTE CONTROL UNIT UR 417 CARTAGD8900 9A08886000 ANT FM T CSA1A010Z 9A08886100 AM LOOP ANTENNA ASSY...

Страница 31: ...8 6 7 4 5 2 3 1 E D C B A BLOCK DIAGRAM AG D7900 AV Digital Home Theater Receiver A AG G D D7 79 90 00 0 1 st Issue July 2001...

Страница 32: ...st Issue July 2001 NOTES 1 Resistor values are in ohms k kilo ohms M megohms 2 Capacitor values are in microfarads p picofarads 3 Parts marked with this sign are safety critical components They must...

Страница 33: ...st Issue July 2001 NOTES 1 Resistor values are in ohms k kilo ohms M megohms 2 Capacitor values are in microfarads p picofarads 3 Parts marked with this sign are safety critical components They must...

Страница 34: ...LEAKAGE CURRENT OR RESISTANCE MEASUREMENTS TO DETERMINE THAT EXPOSED PARTS ARE ACCEPTABLY INSULATED FROM THE SUPPLY CIRCUIT NOTES 1 Resistor values are in ohms k kilo ohms M megohms 2 Capacitor values...

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