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Aiwa XR-M88 Service Manual

Compact disc stereo system
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SERVICE MANUAL
COMPACT DISC STEREO SYSTEM
SYSTEM
XR-M88
This Service Manual is the "Revision Publishing" and replaces "Simple Manual"
(S/M Code No.09-996-333-3T3).
• BASIC TAPE MECHANISM : TN-708C-128R
• BASIC CD MECHANISM : KSM-620AAA
RECEIVER
RX-LM88
S/M Code No. 09-996-333-3R3
XR-M88
CD/
SPEAKER
CASSETTE
FD-LM88
SX-LM200
HC(S)

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Summary of Contents for Aiwa XR-M88

  • Page 1 XR-M88 HC(S) SERVICE MANUAL • BASIC TAPE MECHANISM : TN-708C-128R COMPACT DISC STEREO SYSTEM • BASIC CD MECHANISM : KSM-620AAA SYSTEM RECEIVER SPEAKER CASSETTE XR-M88 RX-LM88 FD-LM88 SX-LM200 This Service Manual is the “Revision Publishing” and replaces “Simple Manual” (S/M Code No.09-996-333-3T3).

  • Page 2: Table Of Contents

    TABLE OF CONTENTS SPECIFICATIONS........................... 3 ACCESSORIES/PACKAGE LIST ......................3 PROTECTION OF EYES FROM LASER BEAM DURING SERVICING/ Precaution to replace Optical block ......................4 MODEL NO. RX-LM88 ELECTRICAL MAIN PARTS LIST ....................... 5, 6 TRANSISTOR ILLUSTRATION ....................... 7 FL (13-ST-36GNAK) GRID ASSIGNMENT/ANODE CONNECTION ............8 WIRING-1 (POWER AMP) ........................

  • Page 3: Specifications

    SPECIFICATIONS • Design and specifications are subject to change without notice. • Dolby noise reduction manufactured under license from Dolby Laboratories Licensing Corporation. “DOLBY” and the double-D symbol are trademarks of Dolby Laboratories Licensing Corporation. • The word “BBE” and the “BBE symbol” are trademarks of BBE Sound,Inc.

  • 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: Model No. Rx-Lm88

    MODEL NO. RX-LM88 ELECTRICAL MAIN PARTS LIST REF. NO PART NO. KANRI DESCRIPTION REF. NO PART NO. KANRI DESCRIPTION C185 87-010-322-080 C-CAP,S 100P-50 J CH C186 87-010-322-080 C-CAP,S 100P-50 J CH 87-070-127-110 IC,LC72131 D C187 87-010-322-080 C-CAP,S 100P-50 J CH 87-A20-913-010 IC,LA1837NL C191...
  • Page 6 REF. NO PART NO. KANRI DESCRIPTION REF. NO PART NO. KANRI DESCRIPTION C277 87-010-197-080 CAP, CHIP 0.01 DM C757 87-012-188-080 C-CAP,U 47P-50 CH CN201 87-A60-812-010 CONN,8P V BLK TAC-L8P C758 87-012-167-080 C-CAP,U 5P-50 CH CN202 87-A60-812-010 CONN,8P V BLK TAC-L8P C763 87-010-829-080 CAP, U 0.047-16...

  • Page 7: Transistor Illustration

    • Regarding connectors, they are not stocked as they are not the initial order items. The connectors are available after they are supplied from connector manufacturers upon the order is received. CHIP RESISTOR PART CODE Chip Resistor Part Coding Figure Resistor Code Value of resistor Chip resistor...

  • Page 8: Fl (13-St-36Gnak) Grid Assignment/Anode Connection

    FL (13-ST-36GNAK) GRID ASSIGNMENT/ANODE CONNECTION GRID ASSIGNMENT ANODE CONNECTION...

  • Page 9: Wiring-1 (Power Amp)

    WIRING-1 (POWER AMP) SW101 AC VOLTAGE 120 220-240V AC120/220-240V 50/60Hz MODEL MODEL...

  • Page 10: Schematic Diagram-1 (Power Amp)

    SCHEMATIC DIAGRAM-1 (POWER AMP) AC VOLTAGE...

  • Page 11: Wiring-2 (Front)

    WIRING-2 (FRONT)

  • Page 12: Schematic Diagram-2 (Front)

    SCHEMATIC DIAGRAM-2 (FRONT) IC301 LC866532A-5L31RX...

  • Page 13: Wiring-3 (Tuner)

    WIRING-3 (TUNER)

  • Page 14: Schematic Diagram-3 (Tuner)

    SCHEMATIC DIAGRAM-3 (TUNER) BAND IF AMP TU+B FM/AM IF/STEREO TUNER SYSTEM L981 AM Tracking ADJ L771 DC Balance/Mono Distortion ADJ L772 AM IF ADJ TUNER C.B...

  • Page 15: Electrical Adjustment

    ELECTRICAL ADJUSTMENT TUNER C.B FFE801 L772 L771 IC771 L981 R785 CN701 11 10 < TUNER SECTION > 1. DC Balance/Mono Distortion Adjustment 5. Clock Frequency Check Settings: • Test point: TP2 (CLK IC771 pin30) Settings: • Test point: TP3, TP4 Method: Set to AM 1602kHz and check that the test •...

  • Page 16: Practical Service Figure

    PRACTICAL SERVICE FIGURE < TUNER SECTION > <FM SECTION> IHF Sensitiviy: 4dB±6dB (THD 3%) (at 87.5/98.0MHz) 5dB±6dB (at 108MHz) Signal to noise ratio: More than 65dB (at 98.0MHz) Distortion: Less than 1.3% (Input: 66dB) (at 98.0MHz) Stereo separation: More than 30dB (at 98.0MHz) Intermediate frequency: 10.7MHz...

  • Page 17: Ic Description

    IC DESCRIPTION IC, LC866532A-5L31RX Pin No. Pin Name Description ________________ I-MACMD Command input from master microprocessor. O-SCMD Serial data output to master microprocessor. 1-RDSDATA RDS data input. ___________ O-PAMP Power supply control output (power supply ON/OFF of POWER AMP). — O-CLK Connected to TUNER PLL IC LC72131 pin-5 CL.
  • Page 18 Pin No. Pin Name Description VDD2 — Microprocessor power supply. (µ-com 5V). 91, 92 P04, P05 — O-MUTE Main mute output. — 95-97 P10-12 — O-MASI Serial data output to master microprocessor. ____________ I-MASO Serial data input from master microprocessor. I-MACLK Transfer clock input from master microprocessor.

  • Page 19: Ic Block Diagram

    IC BLOCK DIAGRAM IC, BU1920FS IC, LA1837 IC, LC72131...

  • Page 20: Mechanical Exploded View 1/1

    MECHANICAL EXPLODED VIEW 1/1 P.C.B HLDR,IC HT-SINK,MAIN ASSY HT-SINK,SUB P.C.B P.C.B P.C.B SHLD-PLATE PT P.C.B SHLD-PLATE P.C.B SUB.PT P.C.B CHAS,MAIN...

  • Page 21: Mechanical Parts List 1/1

    MECHANICAL PARTS LIST 1/1 REF. NO PART NO. KANRI DESCRIPTION REF. NO PART NO. KANRI DESCRIPTION 1 8Z-CL1-056-110 WINDOW,DISP EX 21 8Z-CL1-216-110 COVER, AC TERM 2 8Z-CLB-013-010 PANEL,RX CS 22 8Z-CLB-220-010 COVER, SCREW 3 8Z-CL1-001-110 CABI,FR RX A 87-067-703-010 TAPPING SCREW, BVT2+3-10 4 8Z-CL1-204-010 HLDR,FL B 87-744-095-410...

  • Page 22: Model No. Fd-Lm88

    MODEL NO. FD-LM88 DISASSEMBLY INSTRUCTIONS Remove the two screws. Remove the two screws.
  • Page 23 Remove the eight screws and remove the PANEL, REAR FD. PANEL, REAR FD While moving up the rear of the PANEL, TOP, remove the PANEL, TOP by pulling it to the front. PANEL, TOP...
  • Page 24 Remove the FFC and cord. Be careful that the FFC especially cannot be removed easily. Remove the screws.
  • Page 25 Remove the two FFCs. Remove the claw and remove the CABI FRFD together with the entire front board. CABI FRFD...
  • Page 26 While moving up the CD board and the function board, remove the CD board and the function board. You can locate the mechanism deck. Function Board CD Board...

  • Page 27: Electrical Main Parts List

    ELECTRICAL MAIN PARTS LIST REF. NO PART NO. KANRI DESCRIPTION REF. NO PART NO. KANRI DESCRIPTION 87-010-197-080 CAP, CHIP 0.01 DM 87-010-553-040 CAP,E 47-16 GAS 87-A20-446-010 C-IC,LA9241ML 87-010-404-040 CAP,E 4.7-50 SME 87-A20-459-010 C-IC,LC78622ED 87-010-196-080 CHIP CAPACITOR,0.1-25 87-A20-445-010 IC,BA5936 87-010-145-080 C-CAP,S 1P-50 CH 8Z-CLB-621-010 C-IC,LC866560-5M02FD 87-A20-455-010...
  • Page 28 REF. NO PART NO. KANRI DESCRIPTION REF. NO PART NO. KANRI DESCRIPTION 87-003-152-080 COIL, 100UH SFR452 87-024-436-080 SFR,47K RH063EC L150 87-003-171-010 COIL, 15UH FL5R100 L201 87-A50-052-010 COIL,CLOCK 5.76MHZ T1 SFR130 87-A90-787-080 SFR,100K H HOKU FUNCTION C.B W201 8Z-CL1-653-010 F-CABLE,19P 1.5 FG C501 87-010-197-080 CAP, CHIP 0.01 DM...
  • Page 29 REF. NO PART NO. KANRI DESCRIPTION L501 87-003-107-080 COIL, 0.47UH K LAL02 KEY C.B S801 87-A91-024-080 SW,TACT KSH0611BT S802 87-A91-024-080 SW,TACT KSH0611BT S803 87-A91-024-080 SW,TACT KSH0611BT S804 87-A91-024-080 SW,TACT KSH0611BT S805 87-A91-024-080 SW,TACT KSH0611BT S806 87-A91-024-080 SW,TACT KSH0611BT S807 87-A91-024-080 SW,TACT KSH0611BT S808 87-A91-024-080...

  • Page 30: Transistor Illustration

    TRANSISTOR ILLUSTRATION 2SA1235 2SK2158 2SC3052 2SA933 2SA1318 KTA1266 DTA144TK 2SC2001 DTC114TK CSD655E RT1N144C CSD1489B KTC3198...

  • Page 31: Wiring-1 (Cd)

    WIRING-1 (CD) CD C.B (COMPONENT SIDE)
  • Page 32 CD C.B (CONDUCTOR SIDE)

  • Page 33: Schematic Diagram-1 (Cd 1/2)

    SCHEMATIC DIAGRAM-1 (CD 1/2)

  • Page 34: Schematic Diagram-2 (Cd2/2)

    SCHEMATIC DIAGRAM-2 (CD2/2) IC201 LC866560W-5M02FD...

  • Page 35: Wiring-2 (Tape)

    WIRING-2 (TAPE)

  • Page 36: Wiring-3 (Key)

    WIRING-3 (KEY)

  • Page 37: Wiring-4 (Func)

    WIRING-4 (FUNC) DECK C.B TO/FROM TAPE C.B CN302...

  • Page 38: Schematic Diagram-3 (Tape/Func/Key)

    SCHEMATIC DIAGRAM-3 (TAPE/FUNC/KEY) DECK...

  • Page 39: Test Mode

    TEST MODE 1. CD Test Mode 1-1. How to Start Up the CD Test Mode While pressing the “CD OPEN/CLOSE” button, connect the AC plug to the power outlet. When the CD test mode is started up, When the CD test mode starts up, all displays turn on. Note: When the PANEL, TOP has been removed for each CHAS, GEAR, be sure to short pin-4 and pin-5 of the connector CN3 on the CD board in order to recognize that the CD lid is closed.

  • Page 40: Electrical Adjustment

    ELECTRICAL ADJUSTMENT CD C.B (VREF) (RF) SFR130 (TE) < CD SECTION > 2. Tracking Balance Check Oscilloscope Note: • Connect a probe (10: 1) of the oscilloscope test point (DC range) for adjustment. • Connect ground (-) terminal of oscilloscope probe to TP3 (VREF) for all adjustment.

  • Page 41: Deck Section

    Method: 1) Input the 1kHz signal and adjust the input signal level for -20 dB. 2) Set the XR-M88 into the record mode and record the 1kHz and 10kHz signals alternately. 3) Play back the segment that is recorded in step 2) and adjust SFR351 and SFR352 so that both the 1kHz and 10kHz signals have the same level within 0 dB +3/-4dB.

  • Page 42: Practical Service Figure

    PRACTICAL SERVICE FIGURE < TAPE SECTION > Tape speed: 3000Hz±60Hz Wow & Flutter: Less than 0.21% (W.R.M.S) Distortion (REC/PB): Less than 2.5% Noise level (PB): Less than 3.5mV (DOLBY OFF, NORM) Test tape: NORMAL TTA-602...

  • Page 43: Ic Description

    IC DESCRIPTION IC, LC866560W-5M02FD Pin No. Pin Name Description O-MACMD Command output to slave microprocessor. ____________ I-SCMD Command input from slave microprocessor. Serial data send/receive preparation completion output for MD UNIT control. (TAPE O-ARDY REC MUTE output). Serial data transfer request for MD UNIT control. (FWD/RWD switching output O-SREQ during TAPE PLAY/REC).
  • Page 44 Pin No. Pin Name Description I-OIRT I-RDS _________ I-BBE INITIAL DIODE MATRIX input. _______________ I-DOLBY _______ I-TAPE/MD _____________ I-DEMO 66-71 PE2-PE7 VDD4 — Microprocessor power supply. (µ-com 5V). DECK MECA MAIN MOTOR control output. 74, 75 PF1, PF2 DECK MECA SUB control output. 76, 77 PF3, PF4 —...
  • Page 45 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 46 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 47 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 48 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 49: Ic Block Diagram

    IC BLOCK DIAGRAM IC, BA5936 Rog CURRENT DETECTOR TERMINAL IC, M62495FP IC, BA3880FS IC, MM1454XFBE VREF – QSurround BIAS – ROUT LOUT...

  • Page 50: Mechanical Exploded View 1/1

    MECHANICAL EXPLODED VIEW 1/1 P.C.B P.C.B P.C.B P.C.B SHLD-PLATE,HEAD P.C.B KSM-620AAA TN-708C-128R P.C.B HT-SINK,MD CHAS,MAIN CS P.C.B P.C.B...

  • Page 51: Mechanical Parts List 1/1

    MECHANICAL PARTS LIST 1/1 REF. NO PART NO. KANRI DESCRIPTION REF. NO PART NO. KANRI DESCRIPTION 1 8Z-CL1-014-010 PANEL,CD 31 8Z-CL1-025-010 CAP, UP 2 8Z-CL1-012-010 WINDOW,CD 32 8Z-CL1-026-010 CAP, OPEN 3 8Z-CL1-004-010 CABI,TOP FD 33 8Z-CL1-206-010 BTN,CONT 4 8Z-CL1-007-110 BOX,CD 34 88-HV1-207-010 DMPR,MECHA 5 8Z-CL1-205-210...

  • Page 52: Tape Mechanism Exploded View 1/1

    TAPE MECHANISM EXPLODED VIEW 1/1 CUSHION RUBBER...

  • Page 53: Tape Mechanism Parts List 1/1

    TAPE MECHANISM PARTS LIST 1/1 REF. NO PART NO. KANRI DESCRIPTION REF. NO PART NO. KANRI DESCRIPTION 1 S1-970-015-070 CHASSIS RIVET ASY 26 S1-950-140-030 WIRE CLUMPER 2 S1-970-020-010 MAIN PLATE 27 S1-970-113-010 FL CAPSTAN ASSY 3 S1-970-020-020 B GEAR 28 S1-970-110-060 MAIN BELT(G) 4 S1-970-020-030 C GEAR...

  • Page 54: Cd Mechanism Exploded View 1/1

    CD MECHANISM EXPLODED VIEW 1/1...

  • Page 55: Cd Mechanism Parts List 1/1

    CD MECHANISM PARTS LIST 1/1 REF. NO PART NO. KANRI DESCRIPTION 1 98-820-063-030 KSS-620A(RP) 2 9X-264-638-910 SLED SCREW ASSY 3 9A-491-219-9A0 SLED MOTOR ASSY 4 9X-264-648-210 MD ASSY 5 92-627-751-020 GEAR BN 6 92-646-914-010 LACK SPRING 7 92-646-913-010 HOLDER A 92-646-352-010 TAPPING SCREW B2-8 B 92-627-668-010 SCREW M2-2.5...

  • Page 56: Model No. Sx-Lm200

    MODEL NO. SX-LM200 SPEAKER DISASSEMBLY INSTRUCTIONS Type.1 Type.4 Insert a flat-bladed screwdriver into the position indicated by the TOOLS arrows and remove the panel. Remove the screws of each speaker 1 Plastic head hammer unit andthen remove the speaker units. 2 (-) flat head screwdriver 3 Cut chisel Type.2...

  • Page 57: Speaker Parts List 1/1

    SPEAKER PARTS LIST 1/1 REF. NO PART NO. KANRI DESCRIPTION 1 8Z-CP1-012-010 CORD,SP 2 8Z-CP1-006-010 GRILLE,FRAME ASSY<YJTN> 2 8Z-CP1-017-010 GRILLE,FRAME ASSY B<YJBN> 3 8Z-CP1-003-010 PANEL,FR<YJTN> 3 8Z-CP1-015-010 PANEL,FR B<YJBN> 4 8Z-CP1-005-010 PANEL,TW<YJTN> 4 8Z-CP1-016-010 PANEL,TW B<YJBN> 5 8Z-CP1-601-010 SPKR, W 100 6 88-CL1-937-010 SPKR,TW 25...
  • Page 58 2–11, IKENOHATA 1–CHOME, TAITO-KU, TOKYO 110, JAPAN TEL:03 (3827) 3111 Printed in Singapore 931196...

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