Aiwa XR-M88 Service Manual
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Aiwa XR-M88 Service Manual

Aiwa XR-M88 Service Manual

Basic tape mechanism: tn-708c-128r basic cd mechanism: ksm-620aaa
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See also: Service Manual
SERVICE MANUAL
COMPACT DISC STEREO SYSTEM
SYSTEM
XR-M88
This Service Manual is the "Revision Publishing" and replaces "Simple Manual"
(S/M Code No.09-996-333-3T1).
• BASIC TAPE MECHANISM : TN-708C-128R
• BASIC CD MECHANISM : KSM-620AAA
RECEIVER
RX-LM88
S/M Code No. 09-996-333-3R1
XR-M88
CD/
SPEAKER
CASSETTE
FD-LM88
SX-LM200
U(S)

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Summary of Contents for Aiwa XR-M88

  • Page 1 XR-M88 U(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.09-996-333-3T1).

  • Page 2: Table Of Contents

    TABLE OF CONTENTS SPECIFICATIONS ..........................3 PROTECTION OF EYES FROM LASER BEAM DURING SERVICING ..........4 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 C281 87-010-401-080 CAP, ELECT 1-50V C282 87-010-263-080 CAP, ELECT 100-10V 87-070-127-110 IC,LC72131 D C283 87-010-380-080 CAP, ELECT 47-16V 87-A20-913-010 IC,LA1837NL C284 87-010-405-080 CAP, ELECT 10-50V 8Z-CL1-627-010...
  • Page 6 REF. NO PART NO. KANRI DESCRIPTION REF. NO PART NO. KANRI DESCRIPTION R215 87-A00-258-080 RES,M/F 0.22-1W J C774 87-010-263-080 CAP, ELECT 100-10V R216 87-A00-258-080 RES,M/F 0.22-1W J C775 87-010-404-080 CAP, ELECT 4.7-50V R217 87-A00-258-080 RES,M/F 0.22-1W J C776 87-012-286-080 CAP, U 0.01-25 R218 87-A00-258-080 RES,M/F 0.22-1W J...

  • Page 7: Transistor Illustration

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

  • Page 8: Wiring-1 (Power Amp)

    WIRING-1 (POWER AMP) AC120V 60Hz...

  • Page 9: Schematic Diagram-1 (Power Amp)

    SCHEMATIC DIAGRAM-1 (POWER AMP)

  • Page 10: Wiring-2 (Front)

    WIRING-2 (FRONT)

  • Page 11: Schematic Diagram-2 (Front)

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

  • Page 12: Wiring-3 (Tuner)

    WIRING-3 (TUNER) TO/FROM TU INF C.B CN114...

  • Page 13: Schematic Diagram-3 (Tuner)

    SCHEMATIC DIAGRAM-3 (TUNER) BALANCE BAND SW IF AMP AM IF – ANTENNA – CN701 FM/AM IF/STEREO TUNER SYSTEM TUNER ON/OFF AM TRACKING ADJ. TUNER C.B SIGNAL...

  • Page 14: Electrical Adjustment/Practical Service Figure

    ELECTRICAL ADJUSTMENT PRACTICAL SERVICE FIGURE < TUNER SECTION > < TUNER SECTION > 1. DC Balance/Mono Distortion Adjustment <FM SECTION> TUNER C.B Settings: • Test point: TP3, TP4 IHF Sensitiviy: 4dB±6dB • Adjustment location: L771 (THD 3%) (at 87.5/98.0MHz) • Input level: 54dB 5dB±6dB (at 108MHz) Method: Set to FM 98.0MHz and adjust L771 so that...

  • Page 15: 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 16 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 17: Ic Block Diagram

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

  • Page 18: Mechanical Exploded View 1/1

    MECHANICAL EXPLODED VIEW 1/1 P.C.B HLDER,IC T1.6 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 19: Mechanical Parts List 1/1

    MECHANICAL PARTS LIST 1/1 REF. NO PART NO. KANRI DESCRIPTION REF. NO PART NO. KANRI DESCRIPTION 1 8Z-CL1-056-010 WINDOW,DISP EX 16 87-A80-110-010 AC CORD ASSY,U SPT-2W 2 8Z-CLB-013-010 PANEL,RX CS 17 81-669-025-010 FOOT, H11 3 8Z-CLB-081-010 CABI,FR RX U 18 8Z-CL1-654-010 F-CABLE,2P 2.5 170MM SUBPT 4 8Z-CL1-204-010 HLDR,FL...

  • Page 20: Model No. Fd-Lm88

    MODEL NO. FD-LM88 DISASSEMBLY INSTRUCTIONS Remove the two screws. Remove the two screws.
  • Page 21 Remove the eight screws and remove the PANEL, REAR FD. While moving up the rear of the PANEL, TOP, remove the PANEL, TOP by pulling it to the front.
  • Page 22 Remove the FFC and cord. Be careful that the FFC especially cannot be removed easily. Remove the screws.
  • Page 23 Remove the two FFCs. Remove the claw and remove the CABI FRFD together with the entire front board.
  • Page 24 While moving up the CD board and the function board, remove the CD board and the function board. You can locate the mechanism deck.

  • Page 25: 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,LC866560W-5M02FD 87-A20-455-010...
  • Page 26 REF. NO PART NO. KANRI DESCRIPTION REF. NO PART NO. KANRI DESCRIPTION L201 87-A50-052-010 COIL,CLOCK 5.76MHZ T1 FUNCTION C.B SFR130 87-A90-787-080 SFR,100K H HOKU W201 8Z-CL1-653-010 F-CABLE,19P 1.5 FG C501 87-010-197-080 CAP, CHIP 0.01 DM WH201 87-A90-878-010 HLDR,WIRE 19P 1.5 51016 C531 87-010-374-040 CAP,E 47-10...

  • Page 27: Transistor Illustration

    IC BLOCK DIAGRAM IC, BA5936 REF. NO PART NO. KANRI DESCRIPTION REF. NO PART NO. KANRI DESCRIPTION KEY C.B MOTOR C.B S801 87-A91-024-080 SW,TACT KSH0611BT CNA101 88-802-051-290 CONN ASSY,5P S802 87-A91-024-080 SW,TACT KSH0611BT CNA103 8Z-CL1-670-010 CONN ASSY,3P H O/C Rog CURRENT S803 87-A91-024-080 SW,TACT KSH0611BT...

  • Page 28: Wiring-1 (Cd)

    WIRING-1 (CD) CD C.B (COMPONENT SIDE)
  • Page 29 CD C.B (CONDUCTOR SIDE)

  • Page 30: Schematic Diagram-1 (Cd 1/2)

    SCHEMATIC DIAGRAM-1 (CD 1/2)

  • Page 31: Schematic Diagram-2 (Cd 2/2)

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

  • Page 32: Wiring-2 (Tape)

    WIRING-2 (TAPE)

  • Page 33: Wiring-3 (Key)

    WIRING-3 (KEY)

  • Page 34: Wiring-4 (Func)

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

  • Page 35: Schematic Diagram-3 (Tape/Func/Key)

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

  • Page 36: Test Mode

    TEST MODE ELECTRICAL ADJUSTMENT CD C.B 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. (VREF) (RF) SFR130...

  • Page 37: Electrical Adjustment

    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 38: 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 39 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 40 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 41 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 42 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 43 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 44: 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 45: 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-CLB-086-010 CABI,TOP FD U 33 8Z-CL1-206-010 BTN,CONT 4 8Z-CLB-087-010 BOX,CD U 34 88-HV1-207-010 DMPR,MECHA...

  • Page 46: Tape Mechanism Exploded View 1/1

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

  • Page 47: 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 48: Cd Mechanism Exploded View 1/1

    CD MECHANISM EXPLODED VIEW 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...

  • Page 49: Accessories/Package List

    ACCESSORIES/PACKAGE LIST REF. NO PART NO. KANRI DESCRIPTION 1 87-043-115-010 ANT,FEEDER FM 2 8Z-CLB-913-010 IB,U(ESF)M 3 87-A90-030-010 ANT,LOOP AM-NC C 4 8Z-CLB-955-010 RC UNIT,ZCL-11...

  • Page 50: 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 51: 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 52 2–11, IKENOHATA 1–CHOME, TAITO-KU, TOKYO 110, JAPAN TEL:03 (3827) 3111 Printed in Singapore 931196...

This manual is also suitable for:

Rx-lm88Fd-lm88Sx-lm200

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