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Pioneer SE-DIR800C manual

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As regras impõem ao revendedor a obrigação de fornecer ao comprador o manual com o produto Pioneer SE-DIR800C. A falta de manual ou informações incorretas fornecidas ao consumidor são a base de uma queixa por não conformidade do produto com o contrato. De acordo com a lei, pode anexar o manual em uma outra forma de que em papel, o que é frequentemente utilizado, anexando uma forma gráfica ou manual electrónicoPioneer SE-DIR800C vídeos instrutivos para os usuários. A condição é uma forma legível e compreensível.

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Infelizmente, pequenos usuários tomam o tempo para ler o manual Pioneer SE-DIR800C, e um bom manual não só permite conhecer uma série de funcionalidades adicionais do dispositivo, mas evita a formação da maioria das falhas.

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Primeiro, o manual Pioneer SE-DIR800C deve conte:
- dados técnicos do dispositivo Pioneer SE-DIR800C
- nome do fabricante e ano de fabricação do dispositivo Pioneer SE-DIR800C
- instruções de utilização, regulação e manutenção do dispositivo Pioneer SE-DIR800C
- sinais de segurança e certificados que comprovam a conformidade com as normas pertinentes

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Normalmente, isso é devido à falta de tempo e à certeza quanto à funcionalidade específica do dispositivo adquirido. Infelizmente, a mesma ligação e o arranque Pioneer SE-DIR800C não são suficientes. O manual contém uma série de orientações sobre funcionalidades específicas, a segurança, os métodos de manutenção (mesmo sobre produtos que devem ser usados), possíveis defeitos Pioneer SE-DIR800C e formas de resolver problemas comuns durante o uso. No final, no manual podemos encontrar as coordenadas do serviço Pioneer na ausência da eficácia das soluções propostas. Atualmente, muito apreciados são manuais na forma de animações interessantes e vídeos de instrução que de uma forma melhor do que o o folheto falam ao usuário. Este tipo de manual é a chance que o usuário percorrer todo o vídeo instrutivo, sem ignorar especificações e descrições técnicas complicadas Pioneer SE-DIR800C, como para a versão papel.

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Primeiro de tudo, contem a resposta sobre a construção, as possibilidades do dispositivo Pioneer SE-DIR800C, uso dos acessórios individuais e uma gama de informações para desfrutar plenamente todos os recursos e facilidades.

Após a compra bem sucedida de um equipamento / dispositivo, é bom ter um momento para se familiarizar com cada parte do manual Pioneer SE-DIR800C. Atualmente, são cuidadosamente preparados e traduzidos para sejam não só compreensíveis para os usuários, mas para cumprir a sua função básica de informação

Índice do manual

  • Página 1

    ORDER NO . PIONEER CORPORATION 4-1, Meguro 1-chome, Meguro-ku, Tokyo 153-8654, Japan PIONEER ELECTRONICS (USA) INC. P.O. Box 1760, Long Beach, CA 90801-1760, U.S.A. PIONEER EUROPE NV Haven 1087, Keetberglaan 1, 9120 Melsele, Belgium PIONEER ELECTRONICS ASIACENTRE PTE. LTD. 253 Alexandra Road, #04-01, Singapore 159936 PIONEER CORPORATION 2004 SE-DIR[...]

  • Página 2

    SE-DIR800C 2 1234 123 4 C D F A B E SAFETY INFORMA TION This service manual is intended for qualified service technicians; it is not meant for the casual do-it-y ourselfer . Qualified technicians ha ve the necessary test equipment and tools, and ha ve been trained to properl y and safel y repair complex products such as those covered by this manual[...]

  • Página 3

    SE-DIR800C 3 5 678 56 7 8 C D F A B E CONTENTS SAFETY INFORMA TION...................................................................................................................................... 2 1. SPECIFICA TIONS ................................................................................................................................[...]

  • Página 4

    SE-DIR800C 4 1234 123 4 C D F A B E 1. SPECIFICA TIONS Specifications T ransmitter TRE-D800 Decoder function ....................... Dolby Digital .......................................... Dolby P ro Logic II ................................................................. DTS ........................... PCM (Fs=44.1kHz, 48kHz) Dolby Headphone (D[...]

  • Página 5

    SE-DIR800C 5 5 678 56 7 8 C D F A B E Accessories V er tical Stand (WNK2387) Coaxial digital cable (WDE1228 / UC) (WDE1236 / EW) (WEX1012) A C/DC P ower Adaptor (WWR1017 / UC) (WWR1018 / EW) Operating Instructions (WRB1055 / UC/EW) (WRB1056 / EW) (WRX1003 / UC) (WRX1004 / EW) W arranty card Rechargeable nic kel-metal h ydride batter ies (2)[...]

  • Página 6

    SE-DIR800C 6 1234 123 4 C D F A B E 2. EXPLODED VIEWS AND P AR TS LIST 2.1 P A CKING P arts marked by "NSP" ar e generally unavailable because the y ar e not in our Master Spar e P arts List. The mark found on some component parts indicates the importance of the safety factor of the part. Ther efor e, when r eplacing, be sur e to use part[...]

  • Página 7

    SE-DIR800C 7 5 678 56 7 8 C D F A B E P A CKING Parts List (2) CONTRAST T ABLE SE-DIR800C/KUCXCN1 and SE-DIR800C/NYXCN are constructed the same except f or the f ollowing : Mark No. Description Part No. NSP 1 W arranty card See Contrast table(2) 2 Coaxial digital cable See Contrast table(2) NSP 3 HEADPHONE WPH1021 4 Rechargeble Battery WEX1012 5 V [...]

  • Página 8

    SE-DIR800C 8 1234 123 4 C D F A B E 2.2 TRANSMITTER SECTION 3 25 4 8 11 5 24 7 31 28 9 22 22 16 18 19 10 29 33 34 32 1 29 14 13 15 6 12 35 36 2 21 21 21 21 21 23 26 30 30 27 17 E[...]

  • Página 9

    SE-DIR800C 9 5 678 56 7 8 C D F A B E TRANSMITTER SECTION P ar ts List (2) CONTRAST T ABLE SE-DIR800C/KUCXCN1 and SE-DIR800C/NYXCN are constructed the same except f or the f ollowing : Mark No. Description Part No. 1 PCB Assy WWX1067 2 Weight WNA1127 3 Cov er WNK2291 4 F ront panel WNK2396 5 Upper case WNK2397 6 Bottom case WNK2422 7 Battery lid WN[...]

  • Página 10

    SE-DIR800C 10 1234 123 4 C D F A B E 2.3 HEADPHONE SECTION Power PCB SW Phot PCB Main PCB Vol Phot PCB 1Heart Shield L=700 (It lets the inside of a rear band tube pass.) 4 Heart Rittsu wire L=560 (It lets the inside of a front band tube pass.) 2 Heart Rittsu wire L=700 (It lets the inside of a front band tube pass.) 2 Heart Rittsu wire L=110 Cable [...]

  • Página 11

    SE-DIR800C 11 5 678 56 7 8 C D F A B E HEADPHONE SECTION P ar ts List Mark No. Description Part No. 1 P ower PCB ASSY WWX1066 2 Main PCB ASSY WWX1065 3 Headband WNA1123 4 Photo cover WNK2282 5 Brack et WNA1125 6 Case L WNK2371 7 Case R WNK2372 8 Base cov er L WNK2278 9 Base cov er R WNK2279 10 V olume cover WNK2389 11 Battery lid WNK2388 NSP 12 Bas[...]

  • Página 12

    SE-DIR800C 12 1234 123 4 C D F A B E 3. BLOCK DIA GRAM AND SCHEMA TIC DIA GRAM 3.1 MAIN, PO WER, L.PHO T O and R.PHO T O PCB ASSYS : AUDIO SIGNAL ROUTE (L ch) A D MAIN PCB ASSY (WWX1065) A R. PHOTO PCB ASSY (WWX1069) D[...]

  • Página 13

    SE-DIR800C 13 5 678 56 7 8 C D F A B E C A B POWER PCB ASSY (WWX1066) B L. PHOTO PCB ASSY (WWX1068) C ÷ When ordering service parts, be sure to refer to "EXPLODED VIEWS and PARTS LIST" or "PCB PARTS LIST". ÷ The > mark found on some component parts indicates the importance of the safety factor of the part. Therefore, when r[...]

  • Página 14

    SE-DIR800C 14 1234 123 4 C D F A B E 3.2 PCB ASSY E[...]

  • Página 15

    SE-DIR800C 15 5 678 56 7 8 C D F A B E : AUDIO SIGNAL ROUTE (L ch) PCB ASSY (WWX1067) E E : The power supply is shown with the marked box.[...]

  • Página 16

    SE-DIR800C 16 1234 123 4 C D F A B E PCB CONNECTION DIA GRAM 4.1 L.PHO T O and R.PHO T O PCB ASSYS NOTE FOR PCB DIAGRAMS : 1. Part numbers in PCB diagrams match those in the schematic diagrams. 2. A comparison between the main parts of PCB and schematic diagrams is shown below. 3. The parts mounted on this PCB include all necessary parts for severa[...]

  • Página 17

    SE-DIR800C 17 5 678 56 7 8 C D F A B E 4.2 PO WER PCB ASSY SIDE A SIDE A SIDE B SIDE B B B POWER PCB ASSY POWER PCB ASSY B B A TP15 TP19 A TP17 TP21 A TP14 TP18 A TP16 TP20 Q1 IC8 IC7 IC9 (WNP1055-A) (WNP1055-A) A A TP4 (Shield Line Heart Line) TP2 TP3 (Shield Line GND) TP1[...]

  • Página 18

    SE-DIR800C 18 1234 123 4 C D F A B E 4.3 MAIN PCB ASSY SIDE A SIDE A A A MAIN PCB ASSY A IC1 IC2 IC6 IC3 IC4 IC5 VR1 (WNP1053-A)[...]

  • Página 19

    SE-DIR800C 19 5 678 56 7 8 C D F A B E SIDE B SIDE B A A MAIN PCB ASSY A (WNP1053) B TP20 TP16 SPEAKER L ch TP5 TP6 TP7 SPEAKER R ch TP8 B TP21 TP17 B TP18 TP14 B TP19 TP15 TP1 B B TP3 TP2 TP4 (Shield Line Heart Line) (Shield Line GND)[...]

  • Página 20

    SE-DIR800C 20 1234 123 4 C D F A B E 4.4 PCB ASSY SIDE A E PCB ASSY E IC10 IC4 Q29 Q11 Q17 Q18 Q12 Q13 Q32 Q19 Q27 Q20 IC6 IC7 IC2 IC16 IC17 IC14 IC8 IC9 Q28[...]

  • Página 21

    SE-DIR800C 21 5 678 56 7 8 C D F A B E E173761 SIDE A E IC1 IC5 IC12 IC3 IC11 IC4 Q30 Q5 Q18 Q32 Q27 Q26 Q20 Q14 Q24 Q15 Q7 Q1 Q2 Q10 Q3 Q23 Q16 Q4 IC13 Q9 Q31 Q21 Q22 (WNP1054-A)[...]

  • Página 22

    SE-DIR800C 22 1234 123 4 C D F A B E SIDE B E E PCB ASSY[...]

  • Página 23

    SE-DIR800C 23 5 678 56 7 8 C D F A B E SIDE B E (WNP1054-A)[...]

  • Página 24

    SE-DIR800C 24 1234 123 4 C D F A B E 5. PCB P AR TS LIST LIST OF ASSEMBLIES P arts marked by "NSP" ar e generally unavailable because the y ar e not in our Master Spar e P arts List. The mark found on some component parts indicates the importance of the safety factor of the part. Ther efor e, when r eplacing, be sur e to use parts of iden[...]

  • Página 25

    SE-DIR800C 25 5 678 56 7 8 C D F A B E Q1 2SC4081 D1 SLC-22VR3F D2 RB520S-30 COILS AND FIL TERS L11 Chip inductor WTH1030 L10, L12 Chip inductor WTH1029 CAP A CIT ORS C58 CCSRCH5R0C50 C50, C52, C53, C56 CKSR YF105Z10 C54, C55 CSZS220M4 C51, C57, C59 CSZSC101M6R3 RESIST ORS R32 RS1/16S103J R34, R36 RS1/16S105J R31 RS1/16S331J R30, R33 RS1/16S561J R3[...]

  • Página 26

    SE-DIR800C 26 1234 123 4 C D F A B E ADJUSTMENT R69, R95, R97, R99 RS1/16S103J R28, R31, R62, R63, R90, R91 RS1/16S104J R38 RS1/16S105J R14, R15, R65, R75 RS1/16S151J R126, R127, R128, R74 RS1/16S152J R25, R26, R72 RS1/16S153J R18, R19 RS1/16S182J R9 RS1/16S220J R68 RS1/16S221J R37, R70, R78, R81, R84 RS1/16S222J R1, R2 RS1/16S273J R73 RS1/16S242J [...]

  • Página 27

    SE-DIR800C 27 5 678 56 7 8 C D F A B E 7. GENERAL INFORMA TION 7.1 DIA GNOSIS 7.1.1 TROUBLE SHOO TING Symptom: No rechar ging possible Inser t the dedicated rechargeable battery (supplied) into the batter y case of the transmitter . Check the peripher y of Q25 and R92-R93 of the transmitter . ST ART Does the CHARGE LED light up? Shor t-circuit betw[...]

  • Página 28

    SE-DIR800C 28 1234 123 4 C D F A B E Symptom: No sound fr om the cordless headphones Connect the A C adaptor while holding the POWER s witch and the ProLogic II switch of the tr ansmitter pressed. (Noise simulation mode) ST ART Is sound output from the headphone ter minal of the transmitter? Is the IR-LED-drive wa vef orm nor mal? (TP11-TP13) Check[...]

  • Página 29

    SE-DIR800C 29 5 678 56 7 8 C D F A B E Symptoms: Failure in sound and indication of the transmitter (Chec king the transmitter) Connect the A C adaptor while holding the POWER s witch and the INPUT s witch of the transmitter pressed. Check the po wer source (A VCC). Check the peripheries of the LED drive TR and of microcomputer (IC4). Check the per[...]

  • Página 30

    SE-DIR800C 30 1234 123 4 C D F A B E Connect a pla yer (DIGIT AL 1, DIGIT AL 2, and analog). PO WER ON Is sound output? Switch to analog input. Switch to DIGIT AL 2. Is sound output? After three minutes or more of continuous pla yback, does the IR LED remain lit? OK Checking audio detection Check the peripheries of IC9 and Q1. Check the peripheries[...]

  • Página 31

    SE-DIR800C 31 5 678 56 7 8 C D F A B E Symptoms: Failure in sound and indication of the cor dless headphones (Chec king the headphones) ST ART Inser t the batter y and set the P ow er switch to ON. Does the LED light up? Is each v oltage (VCC , A1.5 V , D1.5 V , A2.5 V , D2.5 V , and D A C2.5 V) OK? Is sound output while signals are being receiv ed[...]

  • Página 32

    SE-DIR800C 32 1234 123 4 C D F A B E 7.1.2 Disassembl y 1. Remove the tw o screws of the stand. 2. Remove the f our scre ws of the lower case . 3. Slide the cover of the upper and lo wer cases. 4. Remove the lo wer case. 5. Remove the soldering from the charge terminal. 6. Remove the three fixing scre ws of the phono jack. 7. Remove the Board Assy [...]

  • Página 33

    SE-DIR800C 33 5 678 56 7 8 C D F A B E Wire dressing Wire dressing Wire dressing Shielding wire Shielding wire 7 Lead dressing on the L-ch side Incorrect dressing of the wire may result in insufficient transmissible distance between the transmitter and the cordless headphones. 7 Lead dressing on the R-ch side Incorrect dressing of the wire may resu[...]

  • Página 34

    SE-DIR800C 34 1234 123 4 C D F A B E 7.2 IC YSS932 (PCB ASSY : IC1) TRANSMITTER TRE-D800 • 96kHz DIR + Dolby Digital / Pro Logic II / DTS Decoder + SubDSP Pin Arrangement (T op view) • The information shown in the list is basic information and may not correspond exactly to that shown in the schematic diagrams. List of IC YSS932, LC83200W, CXD40[...]

  • Página 35

    SE-DIR800C 35 5 678 56 7 8 C D F A B E Block Dia gram DIRMCK DDIN0 DDIN1 DDIN2 DDIN3 DDINSEL V ERR/BS DBL/V DIRINT PLL DIR DIRO Interface DIRBCK DIRWCK SDIASEL SDIA Interface SDIACKSEL SDWCKI0 SDBCKI0 /SDBCKO CRC DIRPCO DIRSDO SDIA SURENC KARAOKE MUTE CRC AC3DATA DTSDATA NONPCM ZEROFLG XI XO CPO PLL Clock for DIR Block (25MHz) Clock for DSP Block ([...]

  • Página 36

    SE-DIR800C 36 1234 123 4 C D F A B E Pin Function No. Pin Name I/O Function 1 TESTXI I LSI Test pin (must be connected to VSS) 2 TESTXO O LSI Test pin (to be open) 3 VDD2 − +2.5V power supply (for internal core logic) 4 XO O Crystal oscillator connection 5 XI I Crystal oscillator connection (24.576MHz) 6 TESTMS I+ LSI Test pin (to be open) 7 TEST[...]

  • Página 37

    SE-DIR800C 37 5 678 56 7 8 C D F A B E No. Pin Name I/O Function 51 SDOB3 O PCM data output from Sub DSP 52 SDOB2 O PCM data output from Sub DSP 53 SDOB1 O PCM data output from Sub DSP 54 SDOB0 O PCM data output from Sub DSP 55 VDD1 − +3.3v power supply (for I/O) 56 OPORT0 O General purpose output port (LED control : DD) 57 OPORT1 O General purpo[...]

  • Página 38

    SE-DIR800C 38 1234 123 4 C D F A B E No. Pin Name I/O Function 101 RAMA11 O Sub DSP: External memory interface Address 11 102 VSS − Ground 103 VDD2 − +2.5V power supply (for internal core logic) 104 RAMA12 O Sub DSP: External memory interface Address 12 105 RAMA13 O Sub DSP: External memory interface Address 13 106 RAMA14 O Sub DSP: External me[...]

  • Página 39

    SE-DIR800C 39 5 678 56 7 8 C D F A B E LC83200W (PCB ASSY : IC2) • Dolby Headphone LSI Pin Arrangement (T op view)[...]

  • Página 40

    SE-DIR800C 40 1234 123 4 C D F A B E Block Dia gram Data RAM 11.5k × 24bits Input Register Output Register Status I/O I/F Program R OM 15kW × 32bits Control Register Host I/F[...]

  • Página 41

    SE-DIR800C 41 5 678 56 7 8 C D F A B E Pin Function Block No. Pin Name I/O Function Audio IN 7 LRCLOCK I LR clock for audio data input 8 SCLOCK I Bit clock for audio data input 3 SDI0 I Audio data serial input (L, R) 4 SDI1 I Audio data serial input (Ls, Rs) 5 SDI2 I Audio data serial input (C, LFE) Audio OUT 2 SDO O Audio data serial output (L, R)[...]

  • Página 42

    SE-DIR800C 42 1234 123 4 C D F A B E CXD4003Q (PCB ASSY : IC3) • Digital signal-processing LSI that provides functions for both transmission and reception in the DIAT (Digital Infrared Audio Transmission) system Pin Arrangement (T op view)[...]

  • Página 43

    SE-DIR800C 43 5 678 56 7 8 C D F A B E Block Dia gram[...]

  • Página 44

    SE-DIR800C 44 1234 123 4 C D F A B E Pin Function No. Pin Name I/O Function 1 VSS − Digital GND 2N C − Non connection 3N C − Non connection 4 DAAVD − Analog power supply for RF DAC 5 DAAOUT O RF DAC output 6 DAAVS − Analog GND for RF DAC 7 DAVRO I/O Internal current setting for RF DAC 8 DAVREF I Reference voltage input for RF DAC 9N C −[...]

  • Página 45

    SE-DIR800C 45 5 678 56 7 8 C D F A B E No. Pin Name I/O Function 51 TEST32 O Test pin, normally open-circuit 52 TEST33 O Test pin, normally open-circuit 53 TEST34 O Test pin, normally open-circuit 54 TEST35 O Test pin, normally open-circuit 55 TEST36 O Test pin, normally open-circuit 56 VDD − Digital power supply 57 TEST37 I Test pin, normally fi[...]

  • Página 46

    SE-DIR800C 46 1234 123 4 C D F A B E No. Pin Name I/O Function 101 BCKO O Bit clock output 102 DACLKO O Clock output for audio DA converter, 256fs (VCOR/2) 103 DTOK O Receive data condition (Good/poor = H/L) 104 C12 O 12.288MHz clock output (OSCI/2) 105 VSS − Digital GND 106 TEST56 I/O Test pin, normally open-circuit 107 TEST57 I/O Test pin, norm[...]

  • Página 47

    SE-DIR800C 47 5 678 56 7 8 C D F A B E No. Pin Name I/O Function 151 SCLK I Clock input of CPU interface data 152 XLAT I Latch input of CPU interface data 153 SWDT I Writing input of CPU interface data 154 TEST74 O Test pin, normally open-circuit 155 TEST75 I Test pin, normally fixed to L 156 TEST76 O Test pin, normally open-circuit 157 TEST77 O Te[...]

  • Página 48

    SE-DIR800C 48 1234 123 4 C D F A B E PEF001A9 (PCB ASSY : IC4) • 8-bit 1-chip microcomputer Pin Arrangement (T op view) Pin Function 1 PB5 28 PB6 2 PB4 27 PB7 3 PA3 26 PA4 4 PA2 25 PA5 5 PA1 24 PA6 6 PA0 23 PA7 7 PB3 22 OSC2/PG2 8 PB2 21 OSC1/PG1 9 PB1/BZ 20 VDD 10 PB0/BZ 19 RES 11 VSS 18 PC5/TMR1 12 PG0/INT 17 PC4 13 PC0/TMR0 16 PC3 14 PC1 15 PC[...]

  • Página 49

    SE-DIR800C 49 5 678 56 7 8 C D F A B E CXA3504M (MAIN PCB ASSY : IC1) • DIAT Receiver Analog Signal Processing IC Block Dia gram HEADPHONE SE-DHP800[...]

  • Página 50

    SE-DIR800C 50 1234 123 4 C D F A B E Pin Function No. Pin Name I/O Pin Function 1 AGC22 O AGC response setting pin 2 AGC21 O Charging current control pin 3 VCCI − Power supply of the input section 4 SIS I Electric shunt input pin 5 GNDI − GND of the input section 6 IN I Photodiode input signal pin 7N C − Non connection 8N C − Non connection[...]

  • Página 51

    SE-DIR800C 51 5 678 56 7 8 C D F A B E CX4004R (MAIN PCB ASSY : IC2) • Digital Signal-processing IC for DIAT system reception Pin Arrangement (T op view) Block Dia gram * Without TEST pin[...]

  • Página 52

    SE-DIR800C 52 1234 123 4 C D F A B E Pin Function No. Pin Name I/O Function No. Pin Name I/O Function 1 TEST12 I Test pin, normally fixed to L 33 CSOD O Chapter start delayed output 2 TEST13 I Test pin, normally fixed to H 34 SRDT O Read-out output of serial interface data 3 TEST14 I Test pin, normally fixed to H 35 SWDT I Writing input of serial i[...]

  • Página 53

    SE-DIR800C 53 5 678 56 7 8 C D F A B E 7.3 ABOUT LO T MARK INDICA TION 7 Lot mark is sealing indication to the abov e par t of the product. Indication of lot is four columns 0424 2004 Indicates the total weeks through the y ear Date code TX RX Date code location XXXX TX sticker placed in middle[...]

  • Página 54

    SE-DIR800C 54 1234 123 4 C D F A B E 8. P ANEL F A CILITIES Contr ols and displays T ransmitter (top) 1 ST ANDBY/ON button P ress to turn the transmitter on / off . 2 Standby indicator Lights when the transmitter is in standby . The indicator is unlit when the transmitter is on. 3 CHARGE indicator Lights when the rechargeable batteries are being ch[...]

  • Página 55

    SE-DIR800C 55 5 678 56 7 8 C D F A B E T ransmitter (front) 1 Infrar ed transmitters Infrared transmitters are located on either side of the unit. Make sure there is an unobstructed path from the transmitter to your listening position. 2 DECODE indicators Light to indicate the automatic decoding mode for the current source: 2 D: Dolby Digital 2 PL [...]

  • Página 56

    SE-DIR800C 56 1234 123 4 C D F A B E T ransmitter (rear) 1 DC IN jack Connect the supplied AC power adaptor to this jack. (Use only the supplied AC power adaptor . Using adpators with different plug polarities or other characteristics could cause malfunction.) 2 A TT switch Switches the analog input level between -8dB and 0dB for compatibility with[...]

  • Página 57

    SE-DIR800C 57 5 678 56 7 8 C D F A B E 1 VOL (V olume) control Use to adjust the volume. 2 Self-adjusting headband The headband automatically adjusts when you put the headphones on. 3 POWER indicator Lights when the headphones are on. 4 POWER switch P ress to turn on / off . 5 Battery compartment P ress and slide where indicated to open the cover .[...]