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1、SERVICE MANUAL MODEL AVR-2105/885 AVC-1890 AV SURROUND RECEIVER / AMPLIFIER Tokyo, Japan X0206V.01 DE/CDM 0407 For U.S.A., Canada, Europe, U.K., Asia, China,Taiwan R.O.C., Korea 1IN/LOW; 2IN) 31 R-Y1 INPUT 30 B-Y1 INPUT 29 Y1 INPUT 28 I2C GND 27 R-Y2 INPUT 26 B-Y2 INPUT 25 Y2 INPUT 24 23 22 21 20 19
2、 18 17 16 15 SW GND ADRS SW R-Y/R OUTPUT B-Y/B OUTPUT Y/G OUTPUT SW Vcc (9V) SYNC Vcc (9V) CP/HP INPUT Dig GND SCP OUTPUT DAC2 DAC1 fsc Y DL Y DL SW SW PEDESTAL CLAMP 1H DL CONTROL SECAM CONTROL CbCr / UV SW fsc TRAP OFFSET SW LPF / fsc TRAP BPFH. AFCH C / D 32fH VCO V C / D ACC TOF SCP SW APC P / N
3、 ID SYSTEM CW MATRIX TINT DEMO CHROMA BLK NOSE DET YUV RGB MATRIX CP / HP IN SW V SEP SYNC SEP SUB-COLOR VCXO SUB- CONTRAST Y OFFSET SW DAC TEST Ys I2C BUS CONTROL PEDESTAL CLAMP PEDESTAL CLAMP HI: 20h/LOW: 24h 1 2345678910 11 12 13 14 15 16 17 18 19 20 21 22 23 242526272829303132333435363738394041
4、42VDD VSS S1 S2 S3 S4 S5 S6 S7 S8 S9 S10 S11 S12 S13 S14 S15 S16 S17 S18 GND CK DATA STB S1 S2 S3 S4 S5 S6 S7 S8 S9 S10 S11 S12 S13 S14 S15 S16 S17 S18 18 bit Latch Circuit (Rch) (Lch) Same as Rch Level Shift + Shift Register Circuit TC9274N-011 (IC701) BU2090F (IC302, 1003, 1005) 1 2 3 4 5 6 7 8 18
5、 17 16 15 14 13 12 11Q3 VDD OE Q7 Q8 Q11 Q10 Q9 Q6 VSS DATA CLOCK LCK Q0 Q1 Q2 910Q4Q5 CONTROL CIRCUIT 12-bit SHIFT REGISTER 12-bit STRAGE REGISTER O U TP U T B U F FE R (O P E N D R A IN ) TC9273N-004 (IC705) S2 S3 S4 S5 S6 S7 S8 S9 S10 S1 VDD STB DATA S2 S3 S4 S5 S6 S7 S8 S9 S10 GND CK Vss S1 13 1
6、4 1 3 4 5 6 7 8 9 10 11 12 2 15 16 28 27 26 25 24 23 22 21 20 19 18 17 1 13 28 212 1227 14 15 16 Vss GND VDD S1S10 CK DATA STB GND=0V Vss=-8.0-17V GND=0V Border Input Pin No SymbolName Function Dual Power Use:VDD = 8.017 VSingle Power Use:VDD = 8.018V +Power Terminal Digital Ground +Power Terminal I
7、/O Terminal Clock Input Low level Terminal Clock input for data transfer. Serial input for switch setting. Strobe InputStrobe input for data writing.Strobe Input Data Input Input terminal of analog switch. TC9273N Terminal Function RadioFans.CN 21 AVR-2105/885 / AVC-1890 MM74HC4053MX (IC1001, 1004,
8、1008) 1 2 VEE 3 4 5 6 7 89 10 11 16 15 14 13 12 Y1 Y0 Z1 Z Z0 Enable GND Vcc Y X1 X X0 C A B X = Dont Care X = Dont Care Truth Table Control Inputs Select Enable C BAONSwitches L L LLZ0 Y0 X0 L L LHZ0 Y0 X1 L L HLZ0 Y1 X0 L L HHZ0 Y1 X1 L H LLZ1 Y0 X0 L H LHZ1 Y0 X1 L H HLZ1 Y1 X0 L H HHZ1 Y1 X1 HX
9、X X None Truth Table BU4052BCF (IC601D,602D) Y0 Y2 COMMON Y Y3 Y1 INH VEE Vss VDD X2 X1 COMMON X X0 X3 A B 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 B X2 X1 XOUT /IN X0 X3 A Y2 YOUT /IN Y3 Y1 INH VEE Y0 INHBON SwitchesA X0 Y0 X1 Y1 X2 Y2 X3 Y3 L L L H HL HH XNONEX L L L L H BA7626 (IC1000, 1002, 1150-1
10、153) 7 8 16 15 14 13 12 11 10 9 Monitor OUT GND IN5 GND IN4 CTL E IN3 CTL D IN1 CTL A V OUT1 Vcc IN2 CTL B V OUT2 CTL C 6dB 6dB LOGIC LOGIC Note 1: * mark means that feasible for either H or L. Note 2: Each input terminal is provided with sink chip clamp (BA7625). Each input terminal takes 20kohm at
11、 the end (BA7626). CDEV OUT 2 LL*IN 1 HL* LH*IN 3 HHLIN 4 HHHIN 5 CDEV OUT 1 LL* HL*IN 2 LH*IN 3 HHLIN 4 HHHIN 5 ABEMONITOR OUT LL*IN 1 HL*IN 2 LH*IN 3 HHLIN 4 HHHIN 5 RadioFans.CN 22 AVR-2105/885 / AVC-1890 LC74781 (IC1006) Pin No.SymbolName 1VSS1GND 2Xtal INXtal oscillation 3Xtal OUTXtal oscillati
12、on 4CTRL1Xtal oscillation input switching 5BLANKBlank output 6OSC INLC oscillation 7OSC OUTLC oscillation 8CHARACharacter output 9CSEnable input 10SCLKClock input 11SINData input 12VDD2Power 13CV OUTVIDEO signal output 14NC 15CV INVIDEO signal input 16VDD1Power 17SYN INSync. separate circuit input 1
13、8SEP CSync. separate circuit bias voltage 19SEP OUTComplex sync. signal output 20SEP INVertical sync. signal input 21CTRL2NTSC/PAL-M switching input 22CTRL3SEP IN input control 23RSTReset input 24VDD1Power (+5V) CS9 RST23 VSS11 SIN11 SCLK10 OSCIN6 OSCOUT7 SYNIN17 SEPC18 SEPOUT19 CHARA8 VDD212 SEPIN2
14、0 CTRL322 4 CTRL1XtalINXtalOUTBLANKCVINCVOUTCTRL2 212351513 VDD124 Serial parallel converter 8-bits latch + command decoderHorizontal character size register Horizontal size counter Horizontal display position register Horizontal dot counter Vertical display position register Vertical dot counter Bl
15、inking and inversion control register Blinking and inversion control circuit Blinking and inversion control register Blinking and inversion control register Character control counter Line control counter Timing generator Synchronization signal generator Character output control Background control Vi
16、deo output control Display control register RAM write adress counter Display RAM Vertical character size register Vertical size counter Decoder Font RAM Shift register Decoder Horizontal character size register Horizontal character size register Horizontal character size register Horizontal characte
17、r size register RadioFans.CN 23 AVR-2105/885 / AVC-1890 30 74LVX157 (IC810) 1A 1B 1Y 2A 2B 2Y GND 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 Vcc ST 4A 4B 4Y 3A 3B 3Y SELECT 5 SEL 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 1G 1A 1B 1Y0 1Y1 1Y2 1Y3 GND VCC 2G 2A 2B 2Y0 2Y1 2Y2 2Y3 FUNCTION TABLE (each decoder
18、/demultiplexer) INPUTS OUTPUTS G SELECT OUTPUTS G BAY3Y2Y1Y0 LLLHHHL LLHHHLH LHLHLHH LHHLHHH HXXHHHH SN74LVC139APWR (IC820) LED SML1216W (LED901) REDGREEN RadioFans.CN 24 AVR-2105/885 / AVC-1890 16-ST-66GNK S38 S14 S9S1 S2 S3 S4 S5 S12 S13 S7S15 S6 S10 S11 G1 G1G2G3G4G5G6G7G16G15G13G12G10G9 158 G14G
19、11G8 G2G16 12345678910111213141516171819 232425262728293031323334 F1F1S1S2S3S4S5S6S7S8S9S10 S11 S12 S13 S14 S15 S16 S17 20 2122353637383940 4142434445464748495051525354555657 S18 S19 S20 S21 S22 S23 S24 S25 S26 S27 S28 S29 S30 S31 S32 S33 S34 S35 S36S37 S38 G16 G15 G14 G13 G12 G11 G10G9G8G7G6G5G4G3G
20、2G1F2F2 58 S13 S14 S15 S16 S17 S18 S19 S20 S21 S22 S23 S24 G1G2G3G4G5G6G7G8G9G10G11G12G13G14G15G16 S38 S36 S37 S38 -2 DBS TV -1 VDP TAPE /(DVD) /(MD) AUXDVD CDRV.AUX TUNER -2 -3 CD -1 PHONO VCR REC ZONE2 STEREO AUTO TUNED RDS CH S1 S2 S3 S4 S5 S6 S7 S8 S9 S10 S11 S12 S1 S2 S3 S4 S5 S6 S7 S9 S10 S11
21、S12 S1 S2 S3 S4 S5 S6 S7 S8 S9 S10 S11 S12 S13 S14 S15 S16 S17 S18 S19 S20 S21 S22 S23 S24 S13 S14 S15 S25 S26 S27 S28 S29 S30 S31 S32 S33 S34 S35 S25 S26 S27 S28 S29 S30 S31 S32 S33 S34 S35 G2G16G1G2G16G1G2G16G1G2G16G1 DIGITAL PRO LOGICII S1 S6 S11 S16 S21 S26 S31 S2 S7 S12 S17 S22 S27 S32 S3 S8 S1
22、3 S18 S23 S28 S33 S4 S9 S14 S19 S24 S29 S34 S5 S10 S15 S20 S25 S30 S35 TUNED RDS STEREO AUTO REC ZONE2 PHONO VCR CD -1 TUNER -2-3V.AUX AUX CDR DVD / /TAPE VDPTV -1-2 /DBS PRO LOGICII DIGITAL DIGITAL ANALOG TUNED RDS STEREO AUTO REC ZONE2 PHONO VCR CD -1 TUNER -2-3V.AUX AUX CDR DVD/ /TAPE VDPTV -1-2
23、/ DBS CH CH PRO LOGICII DIGITAL DIGITAL ANALOG FL DISPLAY Pin Assignment F1, F2 : Filament G1G16 : Grid S1S38 : Anode PIN NO. CONNECTION PIN NO. CONNECTION PIN NO. CONNECTION Anode K X3J X3; A X2 A X6 H X6 54 53 x4 45 F X4 G X2 D D X2 C A X19 7 46 C G A 40 39 36 35 37 C X2 B X3 A X2 A A X2 H X15 49
24、A 51 47 48 52 50 38 38 63 A x3 34 32 31 30 A X2 A A A 44 43 27 41 17 19 33 BACK BACK Parts marked with this symbolhave critical characteristics. Use ONLY replacement parts recommended by the manufacturer. WARNING: RadioFans.CN 230 AVR-2105/885 / AVC-1890 EXPLODEDB VIEW (FOR EUROPE, ASIA, KOREA MODEL
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