Instruction/ maintenance manual of the product CR-305X Onkyo
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CD RECEIVER MODEL CR-305X Ref.NO.3654 082000 T ABLE OF CONTENTS CR-305X Specifications ----------------------------------------------------------- Caution on replacement of optical pickup ------------.
− 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.
PROTECTION OF EYES FROM LASER BEAM DURING SERVICING This set employs a laser. Therefore, be sure to follow carefully the instructions below when servicing.
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.
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.
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.
− 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.
− 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 STE.
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) Funct.
− 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 C.
− 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.
− 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 .
− 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 .
− 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 ST.
− 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.
− 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 OUT.
−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.
− 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.
− 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 .
−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 .
− 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-Q5.
− 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.
−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 .
− 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.
− 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 .
− 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 si.
− 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.
− 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.
An important point after buying a device Onkyo CR-305X (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Onkyo CR-305X yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Onkyo CR-305X - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Onkyo CR-305X you will learn all the available features of the product, as well as information on its operation. The information that you get Onkyo CR-305X will certainly help you make a decision on the purchase.
If you already are a holder of Onkyo CR-305X, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Onkyo CR-305X.
However, one of the most important roles played by the user manual is to help in solving problems with Onkyo CR-305X. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Onkyo CR-305X along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
