Yamaha CRX-M170, Service Manual

Page 1: ...f YAMAHA are continually striving to improve YAMAHA products Modifications are therefore inevitable and specifications are subject to change without notice or obligation to retrofit Should any discrepancy appear to exist please contact the distributor s Service Division WARNING Static discharges can destroy expensive components Discharge any static electricity your body may have accumu lated by gr...

Page 2: ...onent within the product keep your eyes and skin more than 30 cm away from the laser pick up unit at all times Do not stare at the laser beam at any time 2 Do not attempt to readjust disassemble or repair the laser pick up unless noted elsewhere in this manual 3 CAUTION Use of controls adjustments or performance of procedures other than those specified herein may result in hazardous radiation expo...

Page 3: ...e objective lens surface on the Optical Pick up Block When checking the laser diode emission keep your eyes more than 30 cm away from the objective lens VARO AVATTAESSA JA SUOJALUKITUS OHITETTAESSA OLET ALTTIINA NÄKYMÄTTÖMÄLLE LASER SÄTEILYLLE ÄLÄ KATSO SÄTEESEEN VARNING OSYNLIG LASERSTRÅLNING NÄR DENNA DEL ÄR ÖPPNAD OCH SPÄRREN ÄR URKOPPLAD BETRAKTA EJ STRÅLEN Optical Pick up ADVARSEL USYNLIG LAS...

Page 4: ...e freon propelled chemicals These can generate electrical charges sufficient to damage ES devices 6 Do not remove a replacement ES device from its protective package until immediately before you are ready to install it Most replacement ES devices are packaged with leads electrically shorted together by conductive foam aluminum foil or comparable conductive material 7 Immediately before removing th...

Page 5: ...x 4 5 16 x 14 1 8 Weight 4 4 kg 9 lbs 11 oz Finish Silver color Accessories AM loop antenna x 1 Indoor FM antenna x 1 Indoor DAB antenna x 1 Remote Control x 1 Battery size AAA R03 UM 4 x 2 Specifications subject to change without notice B British model DAB SECTION Tuning Range BAND III 174 MHz to 240 MHz Input 50 ohms nominal Sensitivity 96 dBm Selectivity 35 dB typ Audio Out Stereo 2 0 Vp p Digi...

Page 6: ...f Top Cover a Remove 2 screws q and 4 screws w Fig 1 b Slide the Top Cover rearward to remove it Fig 1 Remove parts in disassembly order as numbered Disconnect the power cable from the AC outlet Top Cover q q w w Front Panel Unit r e e Fig 1 Fig 2 CN16 WF14 2 Removal of Front Panel Unit a Disconnect the connectors WF14 and CN16 Fig 2 b Remove 2 screws e and 3 screws r and then remove the Front Pan...

Page 7: ...a Remove the Rear Panel b Disconnect the connectors WF12 WF15 CN10 CN11 CN13 CN18 and CN19 Fig 4 c Remove 2 screws o and then remove the Main Power 4 and Power 6 P C B s Fig 4 5 Removal of CD Mechanism Unit a Remove the Front Panel Unit b Disconnect the connectors WF12 CN10 and CN11 Fig 4 c Remove 4 screws 0 Fig 4 d Remove the CD Mechanism Unit Fig 4 CN18 CN11 CN10 CN19 WF15 WF12 CN13 Main P C B P...

Page 8: ... Remove 2 screws 2 Fig 6 b Remove a pick up cable Fig 6 c Remove 4 screws 3 and then remove the Drive Unit Fig 6 d Remove the gear A Fig 7 e Pull out the Sled Shaft Fig 7 f Remove the Pick up Head 6 Removal of Tray Unit a Remove 2 screws 1 and then remove the Chucking Unit Fig 5 b Remove 1 hook and then remove the Stopper Pin Fig 5 c Rotate the Drive Gear and then open the Tray Unit Fig 5 d Detach...

Page 9: ...53 and peripheral circuit Check STK442 050 IC22 and peripheral circuit YES YES YES YES YES YES YES YES YES NO NO NO NO NO NO NO NO NO MAINTENANCE FLOW CHART TUNER Start Power on Voltages at pins of connector WF15 are normal Are FM AM normal Is DAB normal Normal Operation MAIN Board Power Board 1 MAIN Board 1 Check Cable 2 Replace Power Supply unit if Power Board is not shorted otherwise find out f...

Page 10: ...1 2 3 4 5 6 7 8 A B C D E F 10 CRX M170 POWER 1 MAIN POWER 4 POWER 6 POWER 5 POWER 2 POWER 3 WIRING DIAGRAM ...

Page 11: ...Y NO REPLACEMENT COMPONENT PARTS WILL BE AVAILABLE TUNER MODULE POWER 1 WF15 POWER 1 BN13 POWER 6 BN24 POWER 2 CN18 CD MECHA CD MECHA POWER 3 WF14 PICK UP SUBWOOFER OUT OUT IN OUT IN AUX 2 IN AUX 1 TAPE MAIN P C B Side A Lead Free Solder Used MAIN P C B Side B Lead Free Solder Used ...

Page 12: ... INFORMATION ONLY NO REPLACEMENT COMPONENT PARTS WILL BE AVAILABLE DAB ANT DIGITAL OUT OPTICAL MAIN WF15 MAIN CN13 POWER 5 JW21 POWER CABLE POWER TRANSFORMER POWER TRANSFORMER POWER 4 CN19 POWER 5 BN21 POWER 3 BN16 MAIN BN18 POWER 1 P C B Side A POWER 2 P C B Side A ...

Page 13: ...14 POWER STANDBY ON PHONES TIME MODE TUNING PRESET TIME TONE BALANCE PROGRAM MEMORY SOURCE VOLUME AUTO TUNING BAND FUNCTION FM MODE INFO TEXT MODE CLEAR POWER 2 BN19 POWER 6 BN17 SPEAKERS R L POWER TRANSFORMER POWER 2 CN21 POWER 1 CHASSIS GND ET21 POWER 4 CN24 MAIN CN17 POWER 3 P C B Side A POWER 4 P C B Side A POWER 5 P C B Side A POWER 6 P C B Side A ...

Page 14: ...1 2 3 4 5 6 7 8 A B C D E F 14 CRX M170 BLOCK DIAGRAM IC13 IC12 IC10 IC51 INPUT SELECTOR IC52 IC53 NJM2068MD PRE AMP IC22 RY72 ...

Page 15: ...ations equal to those originally installed Schematic diagram is subject to change without notice FOR INFORMATION ONLY NO REPLACEMENT COMPONENT PARTS WILL BE AVAILABLE INPUT SELECTOR VOLUME UNCONNECTED VDD VDD VDD VSS VSS VSS VSS VSS TO POWER 2 CN18 Page 17 E 2 TO POWER 6 BN24 Page 17 K 3 TO POWER 1 WF15 Page 17 A 7 TO POWER 3 WF14 Page 17 G 4 TO TUNER MODULE 5 3 5 3 5 3 5 3 5 3 ...

Page 16: ...characteristics are marked Z and must be replaced with parts having specifications equal to those originally installed Schematic diagram is subject to change without notice FOR INFORMATION ONLY NO REPLACEMENT COMPONENT PARTS WILL BE AVAILABLE TO POWER 1 BN13 Page 17 A 5 TO CD MECHA TO CD MECHA TO CD PIKUP ...

Page 17: ... specifications equal to those originally installed Schematic diagram is subject to change without notice FOR INFORMATION ONLY NO REPLACEMENT COMPONENT PARTS WILL BE AVAILABLE TO MAIN CN13 Page 16 A 2 TO MAIN WF15 Page 15 A 8 TO MAIN CN17 Page 15 J 1 TO MAIN WF14 Page 15 D 8 TO MAIN BN18 Page 15 H 1 POWER 1 POWER 2 POWER 3 POWER 4 POWER 5 POWER 6 DIGITAL OUT OPTICAL ...

Page 18: ...7C 85 22 PAUSE 7C 83 23 PLAY 7C 82 24 AMP section TUNER 78 4B 25 CD 78 4A 26 AUX1 78 57 27 AUX2 78 DE 28 TAPE 78 41 29 VOLUME DOWN 78 1F 30 VOLUME UP 78 1E 31 MUTE 78 9C 32 DIMMER 7C A9 33 TUNER 0 78 10 34 NUMERIC KEY 1 78 11 35 0 9 2 78 12 36 3 78 13 37 4 78 14 38 5 78 15 39 6 78 16 40 7 78 17 41 8 78 18 42 9 78 19 43 CD 0 7C 93 44 NUMERIC KEY 1 7C 94 45 0 9 2 7C 95 46 3 7C 96 47 4 7C 97 48 5 7C ...

Page 19: ...E INFO TEXT AUTOTUNE ENTER AUX 2 AUX 1 TAPE CD REPEAT A B PROG CLEAR RANDOM TIME MUTE VOLUME 2 1 51 52 53 5 4 3 21 77 71 6 7 8 31 11 10 9 71 32 75 75 60 71 14 12 13 79 71 12 13 79 71 80 71 81 32 15 32 80 17 36 16 83 82 15 32 81 18 18 38 56 41 79 71 71 33 84 72 79 32 39 73 76 76 74 20 43 19 76 73 32 84 78 59 1 2 3 4 5 6 200 202 204 203 58 ...

Page 20: ...4MA18L Z 43 AAX73700 POWER CABLE 2m CJA2E045ZA 51 AAX73630 VOLUME KNOB ASS Y CGK1A116ZA 52 AAX73430 TUNING KNOB ASS Y CGK1A115ZA 53 AAX73620 FRONT PANEL AL CKM1A167ZC54 56 AAX73350 EARTH PLATE CMC1A253 58 AAX73660 REAR PANEL CKF3A282S 59 AAX73440 TOP COVER CKC1B156S35 60 AAX73360 EARTH PLATE CMC1A280 71 AAX73490 BIND HEAD B TIGHT SCREW 3x6 MFZN2W3 CTB3 6J 72 AAX73500 BIND HEAD B TIGHT SCREW 3x8 MF...

Page 21: ...CRX M170 CRX M170 ...