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CDC-X227
YZ
SERVICE MANUAL
STEREO CAR CD RECEIVER
BASIC CD MECHANISM : BZG-3 BNF
• This Service Manual is the "Revision Publishing" and replaces "Simple Manual"
CDC-X227<YZ>, (S/M Code No. 09-022-454-4T2).
S/M Code No. 09-025-454-4R2

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Table of Contents

   Related Manuals for AIWA CDC-X227 YZ

   Summary of Contents for AIWA CDC-X227 YZ

  • Page 1 CDC-X227 SERVICE MANUAL STEREO CAR CD RECEIVER BASIC CD MECHANISM : BZG-3 BNF • This Service Manual is the "Revision Publishing" and replaces "Simple Manual" CDC-X227<YZ>, (S/M Code No. 09-022-454-4T2). S/M Code No. 09-025-454-4R2...
  • Page 2: Table Of Contents

    SPECIFICATIONS ................................3 PROTECTION OF EYES FROM LASER BEAM DURING SERVICING ..............4 CAUTION WHEN SERVICING ............................5 ELECTRICAL PARTS LIST (CDC-X227) ........................6 ~ 10 ELECTRICAL PARTS LIST (CZA-4 SNYNF) ......................11 ~ 13 ELECTRICAL PARTS LIST (BZG-3 BNF) ........................14 TRANSISTOR ILLUSTRATION ............................
  • Page 3: Specifications

    SPECIFICATIONS RADIO SECTION AUDIO SECTION (FM) Max. Power Output: 45 W x 4 channels Frequency Range: 87.5 MHz – 108 MHz Usable Sensitivity: 12.7 dBf AUX input 50 dB Quieting Sensitivity: 17.2 dBf Input Sensitivity (load impedance) AUX: 300 mV (10 kohms) IF Rejection: 100 dB Frequency Response: 30 Hz –...
  • Page 4: Protection Of Eyes From Laser Beam During Servicing

    PROTECTION OF EYES FROM LASER BEAM DURING SERVICING CAUTION This set employs laser. Therefore, be sure to follow carefully the instructions below when servicing. Use of controls or adjustments or performance of proce- dures other than those specified herin may result in WARNING!! hazardous radiation exposure.
  • Page 5: Caution When Servicing

    CAUTION WHEN SERVICING 1. Procedure For Disassembly 1) Remove COVER TOP and COVER BOTTOM. 2) Remove the screws (indicated with arrows) from CD MECHANISM. Refer to Fig. 1 Fig-1 2. Servicing Position Remove CD MECHANISM and check the movement while in a stable condition. Refer to Fig-2 Fig-2 –...
  • Page 6: Electrical Parts List (cdc-x227)

    ELECTRICAL PARTS LIST (CDC-X227) = ! SAFETY PARTS = Components marked All components used on this model at the production line are shown in this service manual. However, please note that not all components will be available as spare parts for after-sales service.
  • Page 7 Components marked X and R are not designated as spare parts for after sales service, and will not be stocked at the spare parts centers. UNIT-NAME ! C REF-NO PARTS-NO PARTS-NAME SUFFIX&MODEL CDC-X227 YZSF FRONT O SW 0602 87-A90-164-080 SW,TACT SKQNAB(N) FRONT...
  • Page 8 Components marked X and R are not designated as spare parts for after sales service, and will not be stocked at the spare parts centers. UNIT-NAME ! C REF-NO PARTS-NO PARTS-NAME SUFFIX&MODEL CDC-X227 YZSF MAIN 0512 87-010-759-080 C-CAP,U 0.1-25 Z F CM/CB MAIN 0513 87-010-759-080 C-CAP,U 0.1-25 Z F CM/CB...
  • Page 9 Components marked X and R are not designated as spare parts for after sales service, and will not be stocked at the spare parts centers. UNIT-NAME ! C REF-NO PARTS-NO PARTS-NAME SUFFIX&MODEL CDC-X227 YZSF MAIN 0109 87-A30-287-040 C-TR,DTC114TKA MAIN 0401 87-A30-287-040 C-TR,DTC114TKA...
  • Page 10 Components marked X and R are not designated as spare parts for after sales service, and will not be stocked at the spare parts centers. UNIT-NAME ! C REF-NO PARTS-NO PARTS-NAME SUFFIX&MODEL CDC-X227 YZSF MAIN 0803 88-148-229-080 C-RES, 2.2-1/2W J MAIN...
  • Page 11: Electrical Parts List (cza-4 Snynf)

    ELECTRICAL PARTS LIST (CZA-4 SNYNF) = ! SAFETY PARTS = Components marked All components used on this model at the production line are shown in this service manual. However, please note that not all components will be available as spare parts for after-sales service. Components marked S and O are designated as spare parts for service and will be stocked at the spare parts centers.
  • Page 12 = ! SAFETY PARTS = Components marked All components used on this model at the production line are shown in this service manual. However, please note that not all components will be available as spare parts for after-sales service. Components marked S and O are designated as spare parts for service and will be stocked at the spare parts centers. Components marked X and R are not designated as spare parts for after sales service, and will not be stocked at the spare parts centers.
  • Page 13 = ! SAFETY PARTS = Components marked All components used on this model at the production line are shown in this service manual. However, please note that not all components will be available as spare parts for after-sales service. Components marked S and O are designated as spare parts for service and will be stocked at the spare parts centers. Components marked X and R are not designated as spare parts for after sales service, and will not be stocked at the spare parts centers.
  • Page 14: Electrical Parts List (bzg-3 Bnf)

    ELECTRICAL PARTS LIST (BZG-3 BNF) = ! SAFETY PARTS = Components marked All components used on this model at the production line are shown in this service manual. However, please note that not all components will be available as spare parts for after-sales service. Components marked S and O are designated as spare parts for service and will be stocked at the spare parts centers.
  • Page 15: Transistor Illustration

    CHIP RESISTOR PART CODE Chip Resistor Part Coding Figure Resistor Code Value of resistor Chip resistor Dimensions (mm) Wattage Type Tolerance Symbol Resistor Code Form 1/16W 1005 0.35 1/16W 1608 0.45 1/10W 2125 1.25 0.45 1/8W 3216 0.55 TRANSISTOR ILLUSTRATION 2SA1037AK(Q) 2SD2012 2SB1326...
  • Page 16: Wiring - 1 (main)

    WIRING – 1 (MAIN) – 16 –...
  • Page 17: Schematic Diagram - 1 (main)

    SCHEMATIC DIAGRAM – 1 (MAIN) – 17 –...
  • Page 18: Wiring - 2 (front / Aux)<1/2

    WIRING – 2 (FRONT / AUX) <1 / 2> – 18 –...
  • Page 19: Wiring - 2 (front)<2/2

    WIRING – 2 (FRONT) <2 / 2> – 19 –...
  • Page 20: Schematic Diagram - 2 (front / Aux)

    SCHEMATIC DIAGRAM – 2 (FRONT / AUX) – 20 –...
  • Page 21: Wiring - 3 (cd)<1/2

    WIRING – 3 (CD) <1 / 2> – 21 –...
  • Page 22: Wiring - 3 (cd)<2/2

    WIRING – 3 (CD) <2 / 2> – 22 –...
  • Page 23: Schematic Diagram - 3 (cd / Flex / Sw)

    SCHEMATIC DIAGRAM _ 3 (CD / FLEX / SW) – 23 –...
  • Page 24: Wiring - 4 (flex / Sw)

    WIRING – 4 (FLEX / SW) TO CD C.B TO CD C.B – 24 –...
  • Page 25: Lcd Diagram

    LCD DIAGRAM < > SEGMENT < > COMMON – 25 –...
  • Page 26 < > WIRING TABLE < > CHARACTER – 26 –...
  • Page 27: Ic Block Diagram

    IC BLOCK DIAGRAM – 27 –...
  • Page 28: Ic Description

    IC DESCRIPTION IC, LC72358N-9A71 Pin No. Pin Name Description System clock oscillator input. TEST2 Not used. CD DATA IN Input data signal for receiving from CD changer.(Not used) Not connected. CD CLOCK IN Input synchronous clock signal for receiving from CD changer. E-VOL DO Data output for volume level control.
  • Page 29 Pin No. Pin Name Description A-MUTE Audio mute signal output. POWER CONT Power control signal output. ST-BY MUTE ST-BY mute signal output. POWER MUTE Power mute signal output. BEEP BEEP output (3kHz, 50ms). DFP IN Front panel detection. "Detect RF" RF level detection input. Pulled up when not used. Sub-code Q output standby input terminal.
  • Page 30 IC, LA9241ML Pin No. Pin Name Description For the connection of the pickup photodiode. Addition to the FIN1 pin creates an RF signal FIN2 and subtraction from it create an EF signal. FIN1 For the connection of the pickup photodiode. For the connection of the pickup photodiode.
  • Page 31 Pin No. Pin Name Description The HFL (high frequency level) signal is used to judge whether the main beam is positioned on the pit or on the mirror. SLOF Sled servo off control input. CLV error signal input from the DSP. RFSM RF output.
  • Page 32 IC, LC78622NE Pin No. Pin Name Description DEFI Defect detection signal (DEF) input. (Must be connected to 0V when not in used.) For PLL/Test input. A pull-down resistor is built-in. (Must be connected to 0V.) External VCO control phase comparator output. VVSS Internal VCO ground.
  • Page 33 Pin No. Pin Name Description RMUTE Right channel mute output. (Not used) XVDD Crystal oscillator power supply. XOUT Connection for a 16.93 MHz crystal oscillator element. XVSS Crystal oscillator ground. (Must be connected to 0V.) SBSY Subcode clock synchronization signal output. (Not used) EFLG C1, C2, sigle an double error correction monitor.
  • Page 34 IC, LC75374E Pin No. Pin Name Description RVR IN 4dB volume control input. Must be driven at a low impedance. R COM 1dB volume control common pin. For the connection of capacitors that compensate for bass and treble in the tone control circuits. 3 ~ 5 RT1 ~ RT3 A high-frequency compensation capacitors must be connected between T1 and T2.
  • Page 35 Pin No. Pin Name Description TUN(R) Signal input pins. CHG(R) Not used. AUX(R) Signal inputs pins. RSELO Input selector output pins. IC, LC75853NW Pin No. Pin Name Description LCD segment output. Not used. LCD segment output. Not used. 5 ~ 35 S5 ~ S35 LCD segment output.
  • Page 36: Voltage Chart

    VOLTAGE CHART IC201, LA9241ML PIN NO. TUNER PIN NO. TUNER 2.41 2.53 2.49 2.51 2.51 2.51 2.41 2.51 2.52 2.51 2.41 2.51 2.51 DATA 2.51 DATA 4.84 2.51 4.93 2.61 2.51 2.52 2.51 2.42 2.39 2.52 2.53 2.22 2.51 3.71 0.19 4.91 2.47...
  • Page 37 IC202, LC78622NE PIN NO. TUNER PIN NO. TUNER 4.79 1.55 1.75 1.85 1.77 4.69 0.33 0.02 0.11 2.49 2.47 2.39 2.46 DATA DATA DATA DATA DATA 4.88 4.92 1.93 2.34 2.35 4.93 4.93 2.47 2.03 2.03 4.96 – 37 –...
  • Page 38 IC203, LA6557H PIN NO. TUNER ˚´•``ˆÀ`•```í´ˆR 0.17 4.25 4.25 4.25 0.17 4.27 4.27 4.27 4.25 4.25 4.25 4.28 4.28 4.28 4.27 4.27 4.27 DATA DATA DATA DATA DATA DATA DATA DATA DATA 4.27 4.27 4.27 4.28 4.28 4.28 4.28 4.28 4.28 2.58 4.25...
  • Page 39 IC501, LA4743J PIN NO. TUNER PIN NO. TUNER 2.45 2.45 2.45 2.45 2.45 2.45 2.75 2.75 2.75 2.45 2.45 2.45 4.76 4.76 4.76 2.45 2.45 2.45 2.74 2.74 2.74 2.45 2.45 2.45 14.38 14.38 14.38 2.45 2.45 2.45 2.75 2.75 2.75 2.45 2.45...
  • Page 40 PIN NO. TUNER PIN NO. TUNER 3.26 3.26 3.26 1.65 1.65 1.65 DATA DATA DATA DATA DATA DATA DATA DATA DATA 4.82/0 DATA DATA DATA 4.87 4.87 IC901, LC72358N-9A71 4.87 PIN NO. TUNER 4.91 DATA DATA DATA DATA DATA 4.95 4.95 4.85 DATA...
  • Page 41 TU101, FAE347-A31 ANT INPUT OPEN ANT STANDARD INPUT PIN NO. TUNER PIN NO. 2.51 4.88 4.89 4.88 7.82 7.65 0.21 0/2.34 2.45/0 3.42 3.42 3.42 3.42 0.97 0.97 1.02 9.15 2.49 2.46 2.47 8.08 8.53 8.44 8.92 3.41 3.42 3.42 3.42 3.41 3.44...
  • Page 42 REF. NO. PIN NO. 1.05 1.06 1.05 1.04 Q101 3.42 3.39 0.59 0.59 9.16 9.06 Q105 0.36 9.38 9.45 9.24 0.03 9.24 Q106 9.45 9.44 8.54 8.54 4.78 Q107 9.25 0.03 9.24 0.59 Q10? 3.42 3.39 8.66 Q109 7.87 0.07 7.86 3.71 Q201...
  • Page 43 REF. NO. PIN NO. Q401 Q402 Q403 Q404 4.85 4.73 4.85 Q441 0.03 0.02 0.03 0.03 Q442 0.03 0.02 0.03 0.03 Q451 7.89 7.89 7.89 7.89 Q591 7.97 7.97 7.97 7.97 Q592 4.86 4.86 4.86 4.86 4.7/0 – – – Q622 0/4.7 –...
  • Page 44 REF. NO. PIN NO. 4.81 4.74 4.75 4.68 Q802 0.06 0.06 0.06 0.06 6.18 6.18 6.18 6.18 Q811 13.2 13.01 13.18 13.2 5.54 5.58 10.03 10.1 Q821 14.17 14.3 14.28 14.32 9.36 9.45 Q831 14.3 14.38 14.38 14.3 14.37 14.23 14.34 Q832 14.38...
  • Page 45: Test Mode

    TEST MODE 1. How to start CD Test Mode 1) Remove the resistor (100Kohms ) connected at Pin 63 (test) of IC701 (LC72358N) on main circuit board. Then connect a wire between Pin 73 (VDD) and Pin 63 (test). 2) Connect ACC (red) and BACK UP (yellow) wires of the connector assy to the positive terminal of Power Supply device and Ground (black) wire to the negative terminal.
  • Page 46: Mechanical Exploded View

    MECHANICAL EXPLODED VIEW 22 23 11 12 – 46 –...
  • Page 47: Mechanical Parts List

    Components marked X and R are not designated as spare parts for after sales service, and will not be stocked at the spare parts centers. UNIT-NAME ! C REF-NO PARTS-NO PARTS-NAME SUFFIX&MODEL CDC-X227 YZSF O MC1001 8C-KCG-003-010 WINDOW,PANEL 16 O MC1002...
  • Page 48: Color Name Table

    COLOR NAME TABLE Basic color symbol Color Basic color symbol Color Basic color symbol Color Black Cream Orange Green Gray Blue Transparent Blue Gold Pink Silver Titan Silver Brown Violet White Transparent White Yellow Transparent Yellow Metallic Blue Light Blue Transparent Green Dark Blue Transparent Orange...
  • Page 49: Cd Mechanism Exploded View

    CD MECHANISM EXPLODED VIEW MAIN PWB – 49 –...
  • Page 50: Cd Mechanism Parts List

    CD MECHANISM PARTS LIST = ! SAFETY PARTS = Components marked All components used on this model at the production line are shown in this service manual. However, please note that not all components will be available as spare parts for after-sales service. Components marked S and O are designated as spare parts for service and will be stocked at the spare parts centers.
  • Page 51: Accessories Parts List

    Components marked X and R are not designated as spare parts for after sales service, and will not be stocked at the spare parts centers. UNIT-NAME ! C REF-NO PARTS-NO PARTS-NAME SUFFIX&MODEL CDC-X227 YZSF ACCESSORY 87-253-032-410 U+2-3 BLK ACCESSORY 87-B10-141-010 NUT,5 TYPE-2...
  • Page 52: Other Parts List (cdc-x227)

    OTHERS PARTS LIST (CDC-X227) = ! SAFETY PARTS = Components marked All components used on this model at the production line are shown in this service manual. However, please note that not all components will be available as spare parts for after-sales service.
  • Page 53: Other Parts List (bzg-3 Bnf)

    2-11, IKENOHATA 1-CHOME, TAITO-KU, TOKYO 110-8710, JAPAN TEL:03 (3827) 3111 9620450 0251431...

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