Aiwa LCX-257 Service Manual Digest
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Aiwa LCX-257 Service Manual Digest

Compact disc stereo system
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SERVICE MANUAL
COMPACT DISC STEREO
MODEL CODE : 86HR8-0117(B)
SYSTEM
S/M Code No. 09-006-346-6N1
LCX-257
BASIC TAPE MECHANISM : TN-21ZSC-2003
BASIC CD MECHANISM : DA11T3C
HR(S,L,D)
EZ (S,L,D)
K(S,L,D)
HS(L) HC(L)

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  • Page 1 LCX-257 HR(S,L,D) EZ (S,L,D) K(S,L,D) HS(L) HC(L) SERVICE MANUAL COMPACT DISC STEREO BASIC TAPE MECHANISM : TN-21ZSC-2003 SYSTEM BASIC CD MECHANISM : DA11T3C MODEL CODE : 86HR8-0117(B) S/M Code No. 09-006-346-6N1...

  • Page 2: Table Of Contents

    TABLE OF CONTENTS SPECIFICATIONS ..........................3 PROTECTION OF EYES FROM LASER BEAM DURING SERVICING/ Precaution to replace Optical block (SF-P101NR) .................. 4 ELECTRICAL MAIN PARTS LIST ....................... 5-8 WIRING-1 (MAIN: HC, HR) ....................... 9, 10 WIRING-2 (MAIN: HS, K, EZ ) ......................11, 12 SCHEMATIC DIAGRAM-1 (MAIN 1/2) ....................

  • Page 3: Specifications

    SPECIFICATIONS HC, HR, MODELS HS, K, EZ MODELS • Design and specifications are subject to change without notice • Design and specifications are subject to change without notice...

  • Page 4: Protection Of Eyes From Laser Beam During Servicing

    PROTECTION OF EYES FROM LASER BEAM DURING SERVICING This set employs laser. Therefore, be sure to follow carefully the CAUTION instructions below when servicing. Use of controls or adjustments or performance of procedures other than those specified herein may result in hazardous WARNING! radiation exposure.

  • Page 5: Electrical Main Parts List

    ELECTRICAL MAIN PARTS LIST REF. NO PART NO. KANRI DESCRIPTION REF. NO PART NO. KANRI DESCRIPTION C213 87-010-196-080 CHIP CAPACITOR,0.1-25 C214 87-010-196-080 CHIP CAPACITOR,0.1-25 87-A21-368-010 IC,NJM7812FA(A) C223 87-A11-126-080 CAP,TC U 3300P-50 K B 87-A21-365-010 IC,NJM7808FA <HRJS,HRD,HRL,HCL> 87-002-849-080 IC,NJM78L06A C224 87-A11-126-080 CAP,TC U 3300P-50 K B 87-A21-443-040 C-IC,M62495AFP...
  • Page 6 REF. NO PART NO. KANRI DESCRIPTION REF. NO PART NO. KANRI DESCRIPTION C712 87-010-831-080 C-CAP,U,0.1-16F C781 87-010-405-080 CAP, ELECT 10-50V C714 87-012-286-080 CAP, U 0.01-25 C782 87-010-405-080 CAP, ELECT 10-50V C715 87-012-195-080 C-CAP,U 100P-50CH C783 87-012-286-080 CAP, U 0.01-25 <EXCEPT HRJS,HRD,HRL,HCL> C784 87-012-286-080 CAP, U 0.01-25...
  • Page 7 REF. NO PART NO. KANRI DESCRIPTION REF. NO PART NO. KANRI DESCRIPTION REF. NO PART NO. KANRI DESCRIPTION REF. NO PART NO. KANRI DESCRIPTION FFE801 A8-6ZA-19C-170 6ZA-1 YFEENC C411 87-A11-177-080 C-CAP,S 0.15-16 K B C505 87-010-322-080 C-CAP,S 100P-50 CH S917 87-A91-024-180 SW,TACT KSH0611BT <EXCEPT HRJS,HRD,HRL,HCL>...

  • Page 8: Wiring-1 (Main: Hc, Hr)

    WIRING-1 (MAIN: HC, HR)

  • Page 9: Wiring-2 (Main: Hs, K, Ez )

    WIRING-2 (MAIN: HS, K, EZ )

  • Page 10: Schematic Diagram-1 (Main 1/2)

    SCHEMATIC DIAGRAM-1 (MAIN 1/2) HC, HR MODELS L202 K,EZ,HS K, EZ, HS MODELS K,EZ C223, 224 HC, HR 3300p K, EZ, HS TAPE DECK (TN-21ZSC-2003) 230V 50Hz (K,EZ) 220V 60Hz (HS) S101 AC VOLTAGE...

  • Page 11: Wiring-3 (Pt)

    WIRING-3 (PT) 230V 50Hz (K, EZ) 220V 60Hz (HS)

  • Page 12: Schematic Diagram-2 (Tuner: Hc, Hr)

    SCHEMATIC DIAGRAM-2 (TUNER: HC, HR)

  • Page 13: Schematic Diagram-3 (Tuner: Hs, K, Ez,)

    SCHEMATIC DIAGRAM-3 (TUNER: HS, K, EZ,) L981 (3/3) MW VT ADJ. L981 (1/3) MW TRACKING ADJ. L942 LW VT ADJ. L941, TC942 LW TRACKING ADJ.

  • Page 14: Wiring-4 (Micon/Key/Led)

    WIRING-4 (MICON/KEY/LED)

  • Page 15: Schematic Diagram-4 (Micon)

    SCHEMATIC DIAGRAM-4 (MICON)

  • Page 16: Wiring-5 (Cd/Motor)

    WIRING-5 (CD/MOTOR) MOTOR C.B (SLED MOTOR) (INSIDE LIMIT SW) (SPINDLE MOTOR)

  • Page 17: Schematic Diagram-5 (Cd)

    SCHEMATIC DIAGRAM-5 (CD)

  • Page 18: Electrical Adjustment-1 (Hc, Hr)

    ELECTRICAL ADJUSTMENT-1 (HC, HR) MAIN C.B (RED) (YELLOW) L771 L981 L772 IC772 IC721 L301 J201 PHONS MICON C.B IC404 SFR430...

  • Page 19: Electrical Adjustment-2 (Hs, K, Ez)

    ELECTRICAL ADJUSTMENT-2 (HS, K, EZ) MAIN C.B L771 L772 TC942 L942 L941 IC771 (RED) (YELLOW) L981 L301 J201 PHONES MICON C.B IC404 SFR430...

  • Page 20: Voltage Chart

    VOLTAGE CHART...

  • Page 22: Fl (Aiw4214-30Pin Acj-11) Grid Assignment/Anode Connection

    FL (AIW4214-30PIN ACJ-11) GRID ASSIGNMENT/ANODE CONNECTION GRID ASSIGNMENT ANODE CONNECTION TRANSISTOR ILLUSTRATION E C B E C B E C B E C B 2SA933 2SK543 2SB1370F 2SC2714 2SA1296 DTC124XS 2SC2001 KTC3198 DTC114TK 2SD655 RT1P141C DTC114YS 2SA952 PT1P144C 2SA1318 DTC124XK DTC114YK RN1410...

  • Page 23: Ic Block Diagram

    IC BLOCK DIAGRAM IC, M62495AFP IC, LA6541D IC, LC72131D IC, LA1837NL IC, BA4560N...

  • Page 24: Ic Description

    IC DESCRIPTION IC, LC877248A-5R02 Pin No. Pin Name Description O-ARDY O-SREQ O-SOUT Not connected. I-SIN I-ACLK I-MREQ NC (SELECT) Pull down. O-PCONT Main power control. ___________ I-HOLD Hold status detection. O-CLKSFT Clock shift control. I-RESET Reset terminal. Connected to VDD. Not connected.
  • Page 25 Pin No. Pin Name Description 56-79 S24-S47 LCD SEG terminal initial setting output. (No.28-5) I-DOOR CD door detection. I-WRQ Sub-code Q reading stand-by for CD LSI communication. I-DRF RF level detection input. 83-86 COM0-COM3 LCD common output. (No.4-1) O-CDCONT CD power supply control. I-SQOUT Sub-code Q input for CD LSI communication.
  • Page 26 IC, LA9241ML Pin No. Pin Name Description Pin to which external pickup photo diode is connected. RF signal is created by adding FIN2 with the FIN1 pin signal. FE signal is created by subtracting from the FIN1 pin signal. FIN1 Pin to which external pickup photo diode is connected.
  • Page 27 Pin No. Pin Name Description Pin from which TES signal is output to DSP. “High Frequency Level” is used to judge whether the main beam position is on top of bit or on top of mirror. SLOF Sled servo off control input pin. 39, 40 CV–, CV+ CLV error signal input pin from DSP.
  • Page 28 IC, LC78622ED Pin No. Pin Name Description DEFI Defect sense signal (DEF) input pin. (Connect to 0V when not used). Test signal input pin with built-in pull-down resistor. Be sure to connect to 0V. Phase comparator output pin to control external VCO. VVSS —...
  • Page 29 Pin No. Pin Name Description XVDD — Crystal oscillator power supply pin. XOUT Pin to which external 16.9344 MHz crystal oscillator is connected. XVSS — Crystal oscillator GND pin. Be sure to connect to 0V. SBSY Subcode block sync signal output pin. EFLG C1, C2, single and dual correction monitoring pin.

  • Page 30: Mechanical Parts List 1/1

    MECHANICAL PARTS LIST 1/1 REF. NO PART NO. KANRI DESCRIPTION REF. NO PART NO. KANRI DESCRIPTION 1 8A-CJB-034-010 WINDOW,CASS (D)<HRD,KD,EZD> 33 8A-CJB-206-010 HLDR,CHAS CD R 1 8A-CJB-011-010 WINDOW,CASS (L) 34 87-036-389-010 SW,PUSH LOCK <HRL,KL,EZL,HSL,HCL> 35 8A-CJB-205-010 HLDR,CHAS CD L 1 8A-CJB-044-010 WINDOW,CASS (S)<HRJS,HRS,KS,EZS>...

  • Page 31: Mechanical Exploded View 1/1

    MECHANICAL EXPLODED VIEW 1/1 P.C.B P.C.B P.C.B SH, REFRECTOR SH, DIFFUSION HT-SINK P.C.B BINDER HT-SINK, WIRE P.C.B TN-21ZSC BINDER CHAS, MAIN WIRE...

  • Page 32: Tape Mechanism Exploded View 1/1

    TAPE MECHANISM EXPLODED VIEW 1/1 TAPE MECHANISM PARTS LIST 1/1 LUG PLATE REF. NO PART NO. KANRI DESCRIPTION REF. NO PART NO. KANRI DESCRIPTION 1 S1-921-030-4A0 HEAD BASE 36 S1-921-140-220V REC BUTTON LEVER 2 S1-821-030-070 AZIMUTH SPRING 37 S1-921-140-170 P.S.LEVER SPRING 3 S1-921-030-090 PANEL P SPRING 38 S1-921-073-040...

  • Page 33: Cd Mechanism Exploded View 1/1

    CD MECHANISM EXPLODED VIEW 1/1 SHAFT,SLIDE SF-P101NR CHASSIS SPINDLE MOTOR C,B MOTOR(M3) CD MECHANISM PARTS LIST 1/1 REF. NO PART NO. KANRI DESCRIPTION 1 S2-121-A28-400 COVER GEAR 2 S2-511-A21-000 GEAR MIDDLE 3 S2-511-A21-100 GEAR,DRIVE A S1-PN2-03R-OSE SCR PAN PCS 2-3 B 87-261-073-410 SCR S-TPG FLT 2.6-6 ALL M8-ZZK-E90-070...

  • Page 34: Speaker Parts List 1/1

    SPEAKER PARTS LIST 1/1 REF. NO PART NO. KANRI DESCRIPTION 1 8A-CJB-632-010 SPKR,100MM 4OHM<EXCEPT HCL> 2 8A-CJB-021-010 CABI,SPKR FR<EXCEPT HCL> 3 8A-CJB-956-010 PANEL ASSY,SPKR (D)<HRD,KD,EZD> 3 8A-CJB-958-010 PANEL ASSY,SPKR (DS)<HRJS,KS,EZS> 3 8A-CJB-955-010 PANEL ASSY,SPKR (L) <HRL,KL,EZL,HSL> 4 8A-CJB-220-010 HLDR,SPKR REAR<EXCEPT HCL> 5 8A-CJB-204-010 HLDR,SPKR WIRE<EXCEPT HCL>...

  • Page 35: Accessories/Package List

    ACCESSORIES/PACKAGE LIST REF. NO PART NO. KANRI DESCRIPTION 1 8A-CLC-906-010 IB,EZ(9L)B<EZS,EZD,EZL> 1 8A-CLC-911-010 IB,H(EC-K)B<HCL> 1 8A-CLC-901-010 IB,H(ECA)B<HRJS,HRD,HRL> 1 8A-CLC-905-010 IB,K(E)B<KS,KD,KL> 2 87-A90-030-010 ANT,LOOP AM-NC C 3 87-043-115-010 ANT,FEEDER FM<HRJS,HRD,HRL,HCL> 3 87-A90-118-010 ANT,WIRE FM (Z) <EXCEPT HRJS,HRD,HRL,HCL> 4 87-099-726-010 PLUG,ADPTR CONV(K) <KS,KD,KL,EZD,EZL,HSL>...
  • Page 36 2–11, IKENOHATA 1–CHOME, TAITO-KU, TOKYO 110-8710, JAPAN TEL:03 (3827) 3111 737004 Printed in Singapore...

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