JVC-RCEX31B-cs-sch维修电路原理图.pdf

SERVICE MANUAL COPYRIGHT 2006 Victor Company of Japan, Limited No.MB593 2006/12 CD PORTABLE SYSTEM MB593200612SERVICE MANUAL RC-EZ35SB,RC-EZ35SE, RC-EZ35SEN,RC-EZ35SEV, RC-EZ31BB,RC-EZ31BE, RC-EZ31BEN,RC-EZ31BEV COPYRIGHT 2006 Victor Company of Japan, Limited Lead free solder used in the board (material : Sn-Ag-Cu, melting point : 219 Centigrade) TABLE OF CONTENTS 1PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3 2SPECIFIC SERVICE INSTRUCTIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5 3DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6 4ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-11 5TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-12 SERVICE POLICY No service part is available for this model. Exchange only. RadioFans.CN 收音机爱 好者资料库 1-2 (No.MB593) SPECIFICATION RC-EZ35 RC-EZ31 Design and specifications are subject to change without notice. Compact disc player sectionTypeCompact disc player Signal detectionNon-contact optical pick-up (semicondicator lazer) Number of channels2 channels Radio sectionFrequency rangesFM 87.5 MHz - 108.0 MHz AM 522 kHz - 1 629 kHz AntennasTelescopic antenna for FM Ferrite core antenna for AM Cassette deck sectionTrack4-track 2-channel stereo MotorElectronic governor DC motor for capstan HeadsHard permalloy head for recording/playback, magnetic head for erase Fast wind timeApprox. 120 sec. (C-60 cassette) GeneralSpeaker10 cm 2 (4 , 3 W) Power output4 W (2 W + 2 W) at 4 (10% THD) (IEC268-3) Output terminalsPHONES 1 ( 3.5 mm, stereo) Power supplyAC 230 V , 50 Hz DC 12 V (R20/D (13F) cells 8) Power consumption17 W (at operation) 1.5 W (at standby) Dimentions435 mm (W) 156 mm (H) 241 mm (D) MassApprox. 2.8 kg (without batteries) Compact disc player sectionTypeCompact disc player Signal detectionNon-contact optical pick-up (semicondicator lazer) Number of channels2 channels Radio sectionFrequency rangesFM 88 MHz - 108.0 MHz AM 530 kHz - 1 600 kHz AntennasTelescopic antenna for FM Ferrite core antenna for AM Cassette deck sectionTrack4-track 2-channel stereo MotorElectronic governor DC motor for capstan HeadsHard permalloy head for recording/playback, magnetic head for erase Fast wind timeApprox. 120 sec. (C-60 cassette) GeneralSpeaker10 cm 2 (4 , 3 W) Power output4 W (2 W + 2 W) at 4 (10% THD) (IEC268-3) Output terminalsPHONES 1 ( 3.5 mm, stereo) Power supplyAC 230 V , 50 Hz DC 12 V (R20/D (13F) cells 8) Power consumption13 W (at operation) 1.5 W (at standby) Dimentions435 mm (W) 156 mm (H) 241 mm (D) MassApprox. 2.8 kg (without batteries) RadioFans.CN 收音机爱 好者资料库 (No.MB593)1-3 SECTION 1 PRECAUTION 1.1Safety Precautions (1) This design of this product contains special hardware and many circuits and components specially for safety purpos- es. For continued protection, no changes should be made to the original design unless authorized in writing by the manufacturer. Replacement parts must be identical to those used in the original circuits. Services should be per- formed by qualified personnel only. (2) Alterations of the design or circuitry of the product should not be made. Any design alterations of the product should not be made. Any design alterations or additions will void the manufacturers warranty and will further relieve the manufacture of responsibility for personal injury or property damage resulting therefrom. (3) Many electrical and mechanical parts in the products have special safety-related characteristics. These characteris- tics are often not evident from visual inspection nor can the protection afforded by them necessarily be obtained by us- ing replacement components rated for higher voltage, watt- age, etc. Replacement parts which have these special safety characteristics are identified in the Parts List of Ser- vice Manual. Electrical components having such features are identified by shading on the schematics and by ( ) on the Parts List in the Service Manual. The use of a substitute replacement which does not have the same safety charac- teristics as the recommended replacement parts shown in the Parts List of Service Manual may create shock, fire, or other hazards. (4) The leads in the products are routed and dressed with ties, clamps, tubings, barriers and the like to be separated from live parts, high temperature parts, moving parts and/or sharp edges for the prevention of electric shock and fire hazard. When service is required, the original lead routing and dress should be observed, and it should be confirmed that they have been returned to normal, after reassem- bling. (5) Leakage shock hazard testing After reassembling the product, always perform an isola- tion check on the exposed metal parts of the product (an- tenna terminals, knobs, metal cabinet, screw heads, headphone jack, control shafts, etc.) to be sure the product is safe to operate without danger of electrical shock.Do not use a line isolation transformer during this check. Plug the AC line cord directly into the AC outlet. Using a Leakage Current Tester, measure the leakage current from each exposed metal parts of the cabinet, particular- ly any exposed metal part having a return path to the chassis, to a known good earth ground. Any leakage cur- rent must not exceed 0.5mA AC (r.m.s.). Alternate check method Plug the AC line cord directly into the AC outlet. Use an AC voltmeter having, 1,000 per volt or more sensitivity in the following manner. Connect a 1,500 10W resistor paralleled by a 0.15F AC-type capacitor between an ex- posed metal part and a known good earth ground. Measure the AC voltage across the resistor with the AC voltmeter. Move the resistor connection to each exposed metal part, particularly any exposed metal part having a return path to the chassis, and measure the AC voltage across the resistor. Now, reverse the plug in the AC outlet and repeat each measurement. Voltage measured any must not exceed 0.75 V AC (r.m.s.). This corresponds to 0.5 mA AC (r.m.s.). 1.2Warning (1) This equipment has been designed and manufactured to meet international safety standards. (2) It is the legal responsibility of the repairer to ensure that these safety standards are maintained. (3) Repairs must be made in accordance with the relevant safety standards. (4) It is essential that safety critical components are replaced by approved parts. (5) If mains voltage selector is provided, check setting for local voltage. 1.3Caution Burrs formed during molding may be left over on some parts of the chassis. Therefore, pay attention to such burrs in the case of pre- forming repair of this system. 1.4Critical parts for safety In regard with component parts appearing on the silk-screen printed side (parts side) of the PWB diagrams, the parts that are printed over with black such as the resistor ( ), diode ( ) and ICP ( ) or identified by the mark nearby are critical for safety. When replacing them, be sure to use the parts of the same type and rating as specified by the manufacturer. (This regulation dose not Except the J and C version) Good earth ground Place this probe on each exposed metal part. AC VOLTMETER (Having 1000 ohms/volts, or more sensitivity) 1500 10W 0.15 F AC TYPE 1-4 (No.MB593) 1.5Important for laser products 1.CLASS 1 LASER PRODUCT 2.CAUTION : (For U.S.A.) Visible and/or invisible class II laser radiation when open. Do not stare into beam. (Others) Visible and/or invisible class 1M laser radiation when open. Do not view directly with optical instruments. 3.CAUTION : Visible and/or invisible laser radiation when open and inter lock failed or defeated. Avoid direct exposure to beam. 4.CAUTION : This laser product uses visible and/or invisible laser radiation and is equipped with safety switches which prevent emission of radiation when the drawer is open and the safety interlocks have failed or are defeated. It is dangerous to defeat the safety switches. 5.CAUTION : If safety switches malfunction, the laser is able to function. 6.CAUTION : Use of controls, adjustments or performance of procedures other than those specified here in may result in hazardous radiation exposure. REPRODUCTION AND POSITION OF LABELS and PRINT ! Please use enough caution not to see the beam directly or touch it in case of an adjustment or operation check. WARNING LABEL and PRINT (No.MB593)1-5 SECTION 2 SPECIFIC SERVICE INSTRUCTIONS This service manual does not describe SPECIFIC SERVICE INSTRUCTIONS. 1-6 (No.MB593) SECTION 3 DISASSEMBLY 3.1Main body 3.1.1Removing the Rear cabinet assembly (See Fig.1 to 4) (1) Remove the four screws A and five screws B attaching the Rear cabinet assembly. (See Fig.1) (2) Disconnect the Rod antenna wire from post pin of the Tun- er board assembly. (See Fig.2) (3) Disconnect the connector wire from Amplifier board as- sembly connected to connector CN101 of the Power trans- former board assembly. (See Fig.3) (4) Disconnect the connector wire from Capstan motor con- nected to connector CN102 of the Power transformer board assembly. (See Fig.3) (5) Remove the solder the grand wire from Tuner board sol- dered to shield plate. (See Fig.4) Fig.1 Fig.2 Fig.3 Fig.4 A BB B Rod antenna wire Tuner board assemblyPost pin Power transformer board CN101CN102 Ground wire Shield plate (No.MB593)1-7 3.1.2Removing the Top cabinet assembly (See Fig.5, 6) (1) Disconnect the connector wire from Cassette mechanism assembly connected to connector CN205 of the Amplifier board assembly. (See Fig.5) (2) Disconnect the connector wire from speaker connected to connector CN301 of the Amplifier board assembly. (See Fig.5) (3) Remove the solder the grand wire from Cassette mecha- nism assembly soldered to Amplifier board assembly. (See Fig.5) (4) Remove the three screws C attaching the Top cabinet as- sembly. (See Fig.6) Fig.5 Fig.6 3.1.3Removing the Cassette mechanism assembly (See Fig.7) (1) Remove the four screws D attaching the Cassette mecha- nism assembly. Fig.7 CN205 Ground wire CN301 CC C DD D 1-8 (No.MB593) 3.1.4Removing the Amplifier board assembly (See Fig.8, 9) (1) Disconnect the card wire from LCD board assembly con- nected to connector CN701 of the Amplifier board assem- bly. (See Fig.8) (2) Disconnect the connector wire from Amplifier board as- sembly connected to connector CN901 of the CD servo board assembly. (See Fig.8) (3) Disconnect the connector wire from CD door switch con- nected to connector CN906 of the Amplifier board assem- bly. (See Fig.8) (4) Disconnect the connector wire from Amplifier board as- sembly connected to connector CN101 of the Tuner board assembly. (See Fig.9) (5) Disconnect the connector wire from Amplifier board as- sembly connected to connector CN801 of the Headphone jack board assembly. (See Fig.9) (6) Remove the three screws E attaching the Amplifier board assembly. (See Fig.8) Fig.8 Fig.9 E E CN701CN906 CN901CD servo board assembly Amplifier board assembly CN801 (No.MB593)1-9 3.1.5Removing the Headphone jack board assembly (See Fig.10) (1) Remove the solder the grand wire from LCD board assem- bly soldered to Headphone jack board assembly.) (2) Remove the one screw F attaching the Headphone jack board assembly.) (3) Disconnect the connector wire from Function board assem- bly connected to connector CN707 of the Headphone board assembly. Fig.10 3.1.6Removing the Tuner board assembly (See Fig.11) (1) Remove the solder of the grand wire from Function board assembly soldered to Tuner board assembly. (2) Disconnect the connector wire from Function board assem- bly connected to connector CN102 of the Tuner board as- sembly. (3) Remove the tree screws G attaching the Tuner board as- sembly. Fig.11 Solder point CN707 Ground wire F Solder point CN102 G G 1-10 (No.MB593) 3.1.7Removing the Function board assembly (See Fig.12) (1) Disconnect the card wire from LCD board assembly con- nected to connector CN103 of the Function board assem- bly. (2) Remove the four screws H attaching the Function board assembly. Fig.12 3.1.8Removing the Power switch board assembly (See Fig.13) (1) Disconnect the connector wire from LCD board assembly connected to connector CN709 of the Power switch board assembly. (2) Remove the three screws J attaching the Power switch board assembly. Fig.13 CN103H HH H J J CN709 (No.MB593)1-11 3.1.9Removing the LCD board assembly (See Fig.14) (1) Remove the two screws K attaching the LCD board assem- bly. Fig.14 3.1.10 Removing the CD mechanism assembly (See Fig.15) (1) Removing the four screws L attaching the CD mechanism assembly. Fig.15 SECTION 4 ADJUSTMENT This service manual does not describe ADJUSTMENT. KK L L L L 2-13 SECTION 5 TROUBLESHOOTING 5.1 BLOCK DIAGRAM 5.1.1 Block diagram for RC-EZ35 FM RFFM OSCFM ANT. BPF AM ANT. AM OSC FM F/E, IF/DET/MPX IC101 AM RF/IF/DET IC102 PLL IC501 FUNCTION SELECT EQ/BASS/VOL CONTROL PLAY OUT REC IN IC201 R/P AMP +8V BIAS OSC R/P HEAD TA SW. DECK SW + - M TAPE MOTORRESET TU SW.+8V CD DOOR SW. DISC PICKUP RF + D-SERVO + IC901 MP3 DECODER+1M DRAM IC701 MCU LCD KEY R.C. IC301 POWER AMP. L SPEAKER BOX R SPEAKER BOX AC IN RECTIFIER +5V Q411 P-CON POWER SW. Q401 D2061 +8V Q902 IC902 SERVO DRIVER SPINDLE MOTOR SLED MOTOR +8V CD SW. M M + + - - 2-14 5.1.2 Block diagram for RC-EZ31 R/P HEAD IC201 FM ANT. FM RFFM OSC. BPF AM ANT IC101 FM F/E, IF/DET/MPX AM RF/IF/DET. L SPEAKER R SPEAKER TU-5V REG. IC301 POWER AMP. AM OSC VOL IC501 SIGNAL SELECT SW. DISC LCD M+ M- CASS MOTOR RECTIFIER AC INPUT TRANSFORMER DC SUP SW Q401 TU SW. TA SW. KEY IC902 MCU IC901 DSP PICKUP M M SPINDLE MOTOR SLED MOTOR CD DOOR LEAF SW IC903 MOTOR/ACTUATOR DRIVER Q902 CD SW. 2-15 5.2 STANDARD SCHEMATIC DIAGRAMS for RC-EZ35 5.2.1 Primary and Amplifier section Q412 CN906 9014 CN710 TO CD DOOR LEAF SW. TO MCU BOARD CN701 TO TUNER BOARD CN101 TO CD BOARD CN901 TO P / R BOARD CN202 TO CN801 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 ZD404 5V6 R419 150 + R410 330 + C405 330U R409 22 R405 10K Q404 9014 R404 10K R406 4701 / 4W + C402 22U R408 10K C408 100U + R417 3.3K Q403 8050 R421 10K C406 47U D402 IN4148 ZD402 6V2 Q411 8050 R413 R411 Q406 10K 10K 9014 R412 470 CN105 4 3 2 1 R509 C523 4.7K 153M R510 C525 4.7K 153M 1 2 3 4 5 CN905 R523 15K C534 OPEN R522 2.7K CN205 R519 3.3K GND 10 9 8 7 6 5 4 3 2 1 GND CN206 R418 10K CN801 TO AUDIO BOARD CN206 TO CONTROL BOARD CN707 1 2 CN711 R805 10 SW801- A SW719 Rese t C533 OPEN R520 15K R521 2.7K R517 15K C529 R507 C518 15K 100P 100P R514 3.3K R513 Q503 4. 7K 9014 9014 Q50 2 R515 1.2K R518 4. 7K D405 IN4148 Q407 8550 R425 SHORT D404 IN4148 Q415 9014 R508 68K C520 500P C521 1U 1U C507 + C508 1U + 15 14 1