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Onkyo CR-305X - page 1
CD RECEIVER MODEL CR-305X Ref.NO.3654 082000 T ABLE OF CONTENTS CR-305X Specifications ----------------------------------------------------------- Caution on replacement of optical pickup -------------------------- Protection of eyes from laser bam during servicing --------------- Service procedures ------------------------------------------------- ...
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Onkyo CR-305X - page 2
− 1 − CR-305X CAUTION ON REPLACEMENT OF OPTICAL PICKUP The laser diode in the optical pickup block is so sensitive to static electricity, surge current and etc., that the components are liable to be broken down or its reliability remarkably deteriorated. During repair,carefully take the following precautions. (The following precautions are incl ...
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Onkyo CR-305X - page 3
PROTECTION OF EYES FROM LASER BEAM DURING SERVICING This set employs a laser. Therefore, be sure to follow carefully the instructions below when servicing. WARNING!! SERVICE WARNING : DO NOT APPROACH THE LASER EXIT WITH THE EYE TOO CLOSELY. IN CASE IT IS NECESSARY TO CONFIRM LASER BEAM EMISSION, BE SURE TO OBSERVE FROM A DISTANCE OF MORE THAN 30cm ...
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Onkyo CR-305X - page 4
SERVICE PROCEDURE 1. Replacing the fuses 3. Safety-check out (Only U.S.A. model) After correcting the original service problem perform the follwing safety check before releasing the set to the customer Connect the insulating-resistance tester between the plug of power supply cord and terminal GND on the back panel. Specifications: More than 10Mohm ...
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Onkyo CR-305X - page 5
DISPLAY TUNING/PRESET STANDBY/ON MEMORY FM MODE CLEAR PHONES A C O U S T I C P R E S E N C E INPUT A C O U S T I C P R E S E N C E V O L U M E M A X M I N ST S.BASS DIRECT STEREO MUTING MIN kHz MHz MONO AUTO TRACK TIMER W.DAY W.END REC SLEEP CD MEMORY REPEAT RANDOM RDS PM AM ST ANDBY/ON button MEMOR Y button FM MODE button DISPLA Y b utton A COUSTI ...
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Onkyo CR-305X - page 6
L RL RL REMOTE CONTROL OPTICAL SPEAKERS TAPE CDR DIGITAL OUTPUT SUBWOOFER PRE OUT ANTENNA AM FM 75 R OUT ( REC ) ( PLAY ) IN OUT ( REC ) ( PLAY ) IN L 1 2 RL RL REMOTE CONTROL OPTICAL SPEAKERS TAPE CDR MD ANTENNA AM FM 75 DIGITAL OUTPUT R OUT ( REC ) ( PLAY ) IN OUT ( REC ) ( PLAY ) IN OUT ( REC ) ( PLAY ) IN RL Asian and European models U.S. and C ...
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Onkyo CR-305X - page 7
− 7 − REMOTE CONTROLLER : RC-421S V O L U M E U P V O L U M E D O W N REMOTE CONTROLLER STANDBY/ON INPUT TIMER ENTER RANDOM MEMORY REPEAT CD PLAY MODE SLEEP A.PRESENCE CLOCK CALL MUTING REPEAT MD VOLUME PLAY MODE REPEAT TUNER PRESET CDR TAPE SCROLL RC-421S ST ANDBY/ON button TIMER operation buttons CD operation buttons MD operation buttons SLEE ...
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Onkyo CR-305X - page 8
− 8 − CR-305X MICROPROCESSOR CONNECTION DIAGRAM 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 4G 5G 6G 7G 8G 9G 10G VDD CDCLK XL T CDD A T A SENS20 DSPMUT SQCK SENS SQSO RESET STEREO SD A VSS V OLDOWN V OLUP AREA IN/OUT SIGNAL K1 K0 A VDD A VREF POFF XT2 VSS X1 X2 RCLK RD A T A FREQCAL FCE PLLCE Q701 MICR OPR OCESSOR MPD78045FG ...
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Onkyo CR-305X - page 9
CR-305X − 9 − NO. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 MICR OPR OCESSOR TERMINAL DESCRIPTION (Q701 : MPD78042GF-3B9) Function 4G 5G 6G 7G 8G 9G 10G VDD CDCLK XL T CDD A T A SENS20 DSPMUT SQCK SENS SQSO RESET STEREO SD A VSS V OLDO WN V OLUP AREA IN/OUT SIGN AL K1 KO A ...
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Onkyo CR-305X - page 10
− 10 − CR-305X IC BLOCK DIAGRAM AND DESCRIPTIONS V EE V EE TM3 TM5 TM2 TM3 FSET TM6 TM4 V CC V CC V CC ISET TN1-7 PS1-4 TTL ↓ IIL IIL ↓ TTL CC1 DFCT1 DFCT IIL ↓ TTL V CC CC1 CC2 FOK RF - I CP CB V CC V EE V EE V EE LEVEL S MIRR MIRR TGFL LPC IIL DA T A REGISTER INPUT SHIFT REGISTER ADDRESS DECODER SENS SELECTOR OUTPUT DECODER DFCTO IFB1-6 ...
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Onkyo CR-305X - page 11
− 1 1 − T erminal description Pin No. Symbol I/O Description Pin No. Symbol I/O Description Focus error amplif ier output. Connected internally to the window comparator input for bias adjustment. 1 FEO O 2 FEI Focus error input. I 3 4 FDFCT I Capacitor connection pin for defect time constant. FGD I Ground this pin through a capacitor for cuttin ...
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Onkyo CR-305X - page 12
− 12 − CR-305X Q301:CXD2589Q (CD Digital Signal Processor) Bloch Diagram EFM demodurator Clock Generator OSC Error Corrector D/A Interface Serial-In Interface Over Sampling Digital Filter T iming Logic 3rd-Order Noise Shaper PWM PWM 16K RAM Digital OUT Digital CL V CPU Interface Servo Auto Sequencer Asymmetry Corrector Digital PLL Sub Code Proc ...
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Onkyo CR-305X - page 13
− 13 − T erminal description Pin No. Symbol I/O Description Pin No. Symbol I/O Description 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 VSS LMUT RMUT SQCK SQSO SENS D A T A XLA T CLOK SEIN CNIN D A TO XL TO CLKO SPO A SPOB XLON FOK VDD VSS MDP PWMI TEST TES1 VPCO VCKI V16M ...
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Onkyo CR-305X - page 14
− 14 − CR-305X Q401:TC9273N-007 (Analog function switch) Q402:TC9162AF Analog function switch 2 3 4 5 6 7 8 9 10 1 1 12 27 26 25 24 23 22 21 20 19 18 17 1 28 V SS V DD 13 14 15 16 GND CK DA T A STB LEVEL SHIFT AND SHIFT REGISTER S1 S2 S3 S4 S5 S6 S7 OUT S8 S9 OUT S1 S2 S3 S4 S5 S6 S7 OUT S8 S9 OUT 10BITS LA TCH CIRCUIT 10BITS LA TCH CIRCUIT 2 3 ...
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Onkyo CR-305X - page 15
− 15 − − 16 − Vcc 1 2 3 4 5 6 7 8 9 10 1 1 12 13 14 15 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 Level shift 4 BTL AMP 4 Level shift 1 BTL AMP 1 BTL AMP 3 BTL AMP 2 Level shift 3 Level shift 2 RESET Regulator Pin No. Pin Name Description (Function) 1V CC Power supply (shorted with pin 30) 2 Mute ON/OFF control for all BTL AMP outputs 3V ...
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Onkyo CR-305X - page 16
− 18 − CR-305X − 17 − Q103:T A7291S (motor driver) Q691:TC7WU04FU (triple inverters) 1A 3Y 2A GND 1 2 3 4 5 6 7 8 Vcc 1Y 3A 2Y T ruth table A Y L H H L INPUT OUTPUT IN1 0 1 0 1 IN2 0 0 1 1 OUT1 ∞ H L L OUT2 ∞ L H L MODE STOP CW/CCW CCW/SW BRAKE CCW : Counter clockwise diection CW : Clockwise diection Vcc REG PROTECTOR IN1 IN2 GND OUT1 O ...
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Onkyo CR-305X - page 17
−1 9 − − 20 − CD MECHANISM EXPLODEE VIEW(1) CD MECHANISM EXPLODEE VIEW(2) pickup drive unit 62 63 51 54 61 55 53 56 57 58 64 52 59 60 6 5 13 20 19 12 14 15 2 1 3 4 29 22 16 17 16 28 27 26 21 16 12 14 15 18 25 24 23 13 14 15 14 15 16 7 9 8 10 6 11 6 6 Ref. No. Part No. Description 1 2646-290-01 Tray 2 Stopper 3 2625-544-01 Gear cover 4 2625- ...
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Onkyo CR-305X - page 18
− 22 − CR-305X − 21 − REPLACEMENT OF OPIAL PICKUP CHASSIS EXPLODED VIEW P ARTS LIST The laser diode in the optical pickup block is so sensitive to static electricity,surge current and etc. That the components are liable to be broken down or its reliability remarkably deteriorated. During repair,carefully take the following precautions. Do n ...
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Onkyo CR-305X - page 19
− 23 − − 24 − CHASSIS EXPLODED VIEW 1 7 9 8 10 9 12 14 20 22 24 25 31 41 43 46 47 F901 P302 P303 P351 P352 P701 P778 P901 (D,DT type) Q557 Q558 Q559 Q560 Q557A Q557B T901 Z1 Z2 Z5 Z3 Z6 52 55 53 U1 U2 U3 U4 U5 U6 U8 U9 U10 33 6 6 6 6 6 23 6 6 16 6 6 P901 (P ,GR,GT type) 26 50 15 U7 CR-305X ...
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Onkyo CR-305X - page 20
−2 6 − CR-305X CR-305X − 25 − WIRING VIEW BLOCK DIAGRAM T APE REC PLA Y CDR PLA Y REC MD PLA Y REC P405 SUBWOOFER PREOUT FM AM P551 SPEAKERS L R Q691 BUFFER TC7W04 Q181-Q183 TUNER MUTE VOLUME M Q704 MOT OR VOLUME DRIVER T A7291S Q603,Q405 MUTING Q601,Q602 AMP . MUTE M A B C D E F M M FOCUS COIL TRACKING COIL SPINDLE MOT OR SLED MOT OR 21 VO ...
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Onkyo CR-305X - page 21
− 27 − CR-305X − 28 − PRINTED CIRCUIT BO ARD VIEW P AR TS LIST SELECTOR CIRCUIT PC BO ARD (NAAF-6874-1A/-1B/-1C/-1D) CIRCUIT NO. Q401 Q402 Q403,Q404 Q405, Q406 Q409, Q603 Q501-Q504 Q505-Q508 Q509-Q512 Q515-Q518 Q601 Q602 D491,D492 D501-D504 D601 C409,C410 C415-C418 C421,C422 C423,C424,C603 C425,C426 C429,C430 C491, ...
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Onkyo CR-305X - page 22
− 30 − CR-305X − 29 − 1 2 3 4 5 A B C D E F G SCHEMA TIC DIA GRAM (AMPLIFIER SECTION) H P34 5-G P34 3-G P34 5-G P30 1-H P30 2-H P34 3-G P33 4-C P29 5-B P29 5-A CR-305X ...
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Onkyo CR-305X - page 23
−3 1 − − 32 − 1 2 3 4 5 A B C D E F G U2 Component side Soldering side U1 Component side Soldering side U5 Component side Soldering side U6 Component side Soldering side PRINTED CIRCUIT BOARD VIEW 1 POWER SUPPL Y PC BOARD (NAPS-6878) SELECTOR CIRCUIT PC BOARD (NAAF-6874) SPEAKER TERMINAL PC BOARD (NAETC-6881) DIGIT AL OUTPUT PC BOARD (NAETC ...
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Onkyo CR-305X - page 24
− 34 − − 33 − CR-305X CR-305X 1 2 3 4 5 A B C D E F G SCHEMA TIC DIAGRAM (CD & MICROPROCESSOR SECTION) P34 5-G P29 4-D P33 4-B P29 3-A P29 3-B P30 5-E P29 3-B ...
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Onkyo CR-305X - page 25
− 35 − − 36 − CR-305X 1 2 3 4 5 A B C D E F G PRINTED CIRCUIT BOARD VIEW 2 DISPLA Y CIRCUIT PC BOARD (NADIS-6879) U3 Component side Soldering side CD CIRCUIT PC BOARD (NAAR-6875) U8 Component side ...
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Onkyo CR-305X - page 26
− 38 − CR-305X − 37 − 1 2 3 4 5 A B C D E F G PRINTED CIRCUIT BOARD VIEW 3 POWER AMPLIFIER PC BOARD (NAAF-6880) U4 Component side Soldering side CD CIRCUIT PC BOARD (NAAR-6875) U8 Soldering side CONNECTOR PC BOARD (NAETC-6883) U9 Component side Soldering side CR-305X ...
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Onkyo CR-305X - page 27
− 39 − − 40 − CD ADJUSTMENT PROCEDURES CLOCK ADJUSTMENT PROCEDURES Preparation Set the trimming resistors R123 to center. Focus gain adjustment 1. Set the output of the audio oscillator to 1 kHz and 1 ∼ 1.5 VP-P 2. Connect the oscilloscope and audio oscillator as shown below. (Refer to Fig-1) 3. Load the test disc YEDS-18 on the tray and ...
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Onkyo CR-305X - page 28
− 42 − CR-305X CR-305X − 41 − 923A P AD (S) (Part No. 29091923A) A B C D E F A B C D E F A B C D E F A B C D E F G A B C D E F G A C E F G A C E F G P AD (Part No. 29091922A) ASSEMBLING OF P AD 922A Pad and Pad(S) ar e combined. Pad Pad(s) Completed bottom view Pad(S) is f olded. Pad is f olded. Pin mark Pin mark Pin mark display side Side ...
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