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Aiwa LCX-157, Service Manual

The Aiwa LCX-157 Service Manual is an essential companion for users of this exceptional audio system. This comprehensive manual provides detailed instructions and troubleshooting tips to ensure optimal performance. Download this valuable resource for free from manualshive.com and unlock the full potential of your Aiwa LCX-157 system.

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5

REF. NO

PART NO.

KANRI

DESCRIPTION

NO.

REF. NO

PART NO.

KANRI

DESCRIPTION

NO.

 C712     87-010-196-080    CHIP CAPACITOR,0.1-25
 C713     87-012-286-080    CAP, U 0.01-25
 C714     87-012-286-080    CAP, U 0.01-25
 C715     87-012-195-080    C-CAP,U 100P-50CH
 C717     87-012-286-080    CAP, U 0.01-25

 C719     87-012-286-080    CAP, U 0.01-25
 C720     87-012-195-080    C-CAP,U 100P-50CH
 C721     87-012-176-080    CAP 15P
 C722     87-012-176-080    CAP 15P
 C723     87-012-274-080    CHIP CAP,U 1000P-50B

 C725     87-018-131-080    CAP, CER 1000P-50V
 C727     87-010-196-080    CHIP CAPACITOR,0.1-25
 C728     87-010-248-080    CAP, ELECT 220-10V
 C729     87-012-274-080    CHIP CAP,U 1000P-50B
 C731     87-012-286-080    CAP, U 0.01-25

 C752     87-012-284-080    CAP, U 6800P-50
 C753     87-012-195-080    C-CAP,U 100P-50CH
 C755     87-012-286-080    CAP, U 0.01-25
 C756     87-012-286-080    CAP, U 0.01-25
 C757     87-012-188-080    C-CAP,U 47P-50 CH

 C758     87-012-167-080    C-CAP,U 5P-50 CH
 C761     87-010-196-080    CHIP CAPACITOR,0.1-25
 C762     87-012-286-080    CAP, U 0.01-25
 C763     87-010-829-080    CAP, U 0.047-16
 C765     87-012-286-080    CAP, U 0.01-25

 C766     87-010-197-080    CAP, CHIP 0.01 DM
 C768     87-012-286-080    CAP, U 0.01-25
 C769     87-010-260-080    CAP, ELECT 47-25V
 C769     87-010-260-080    CAP, ELECT 47-25V
 C770     87-010-829-080    CAP, U 0.047-16

 C771     87-010-383-080    CAP, ELECT 33-25V
 C772     87-010-829-080    CAP, U 0.047-16
 C773     87-010-196-080    CHIP CAPACITOR,0.1-25
 C774     87-010-263-080    CAP, ELECT 100-10V
 C775     87-010-404-080    CAP, ELECT 4.7-50V

 C776     87-012-286-080    CAP, U 0.01-25
 C777     87-010-400-080    CAP, ELECT 0.47-50V
 C778     87-010-401-080    CAP, ELECT 1-50V
 C779     87-010-401-080    CAP, ELECT 1-50V
 C780     87-010-196-080    CHIP CAPACITOR,0.1-25

 C781     87-010-405-080    CAP, ELECT 10-50V
 C782     87-010-405-080    CAP, ELECT 10-50V
 C783     87-012-286-080    CAP, U 0.01-25
 C784     87-012-286-080    CAP, U 0.01-25
 C785     87-010-405-080    CAP, ELECT 10-50V

 C786     87-010-405-080    CAP, ELECT 10-50V
 C787     87-012-287-080    C-CAP,U 0.015-25 F
 C788     87-012-287-080    C-CAP,U 0.015-25 F
 C789     87-012-275-080    C-CAP,U 1200P-50 B
 C790     87-012-275-080    C-CAP,U 1200P-50 B

 C791     87-010-405-080    CAP, ELECT 10-50V
 C793     87-012-275-080    C-CAP,U 1200P-50 B
 C794     87-010-406-080    CAP, ELECT 22-50
 C795     87-010-596-080    CAP, S 0.047-16
 C796     87-010-403-080    CAP, ELECT 3.3-50V

 C797     87-012-276-080    CAP, CHIP SS 1500 PBK
 C798     87-012-276-080    CAP, CHIP SS 1500 PBK
 C799     87-010-829-080    CAP, U 0.047-16
 C803     87-018-047-080    CAP, CER 0.01-16V
 C812     87-012-286-080    CAP, U 0.01-25

 C814     87-012-286-080    CAP, U 0.01-25
 C820     87-010-260-080    CAP, ELECT 47-25V
 C821     87-012-286-080    CAP, U 0.01-25
 C822     87-012-286-080    CAP, U 0.01-25
 C823     87-012-286-080    CAP, U 0.01-25

 C824     87-012-172-080    CAPACITOR CHIP U 10P CH
 C828     87-010-196-080    CHIP CAPACITOR,0.1-25
 C828     87-010-196-080    CHIP CAPACITOR,0.1-25
 C829     87-010-196-080    CHIP CAPACITOR,0.1-25
 C909     87-012-286-080    CAP, U 0.01-25

 C910     87-012-286-080    CAP, U 0.01-25
 C940     87-012-286-080    CAP, U 0.01-25
 C942     87-012-172-080    CAPACITOR CHIP U 10P CH
 C947     87-012-286-080    CAP, U 0.01-25
 C949     87-A10-039-080    C-CAP,U 470P-50 J CH

 C952     87-012-286-080    CAP, U 0.01-25
 C958     87-010-197-080    CAP, CHIP 0.01 DM
 C959     87-010-831-080    C-CAP,U,0.1-16F
 C960     87-010-196-080    CHIP CAPACITOR,0.1-25
 C962     87-010-401-080    CAP, ELECT 1-50V

 CF801    87-008-423-010    CERAMIC FILTER, SFE10.7
 CF802    82-785-747-010    CF MS2 GHY R
 CN301    87-009-036-010    CONNECTOR, 8P PH V WHT

!

F101    87-035-457-010    FUSE,3.15A 250V TW/C

!

FC101   87-033-213-080    CLAMP, FUSE

!

FC102   87-033-213-080    CLAMP, FUSE

 FFE801   A8-6ZA-19C-170    6ZA-1 YFEENC
 J101     87-A60-354-010    JACK,PIN 2P MSP -242V-05
 J102     87-A60-754-010    TERMINAL,SPK 4P MSP-154V-05
 J103     87-A60-420-010    JACK,3.5 ST (MSC)

 J104     87-099-608-010    JACK, DC HEC3800
 J801     87-A60-880-010    TERMINAL,ANT-PAL 2P MSP-313V-0
 L101     87-005-366-010    COIL, 1UH
 L102     87-005-366-010    COIL, 1UH
 L104     87-005-676-080    COIL,2.2UH K LF5.0S

 L301     88-CL6-609-010    COIL,BIAS 8CL6
 L771     87-A50-266-010    COIL,FM DET-2N(TOK)
 L772     87-A90-733-010    FLTR,PCFAZH-450 (TOK)
 L781     87-005-847-080    COIL,2.2UH(CECS)
 L832     87-005-847-080    COIL,2.2UH(CECS)

 L941     87-A50-020-010    COIL,ANT LW(COI)
 L942     87-A50-019-010    COIL,OSC LW(COI)
 L981     87-NF4-651-110    COIL,AM PACK2N(TOM)
 PR100    87-A90-091-080    PROTECTOR,2A 491
 PR101    87-026-689-080    PROTECTOR,1A 60V 491

 R118     87-029-118-090    RES,FUSE 220-1/2W J
 SW301    8Z-CL8-668-010    SW,RP ZCL8
 TC942    87-011-164-010    CAPACITOR,TRIMMER 30P
 X721     87-A70-061-010    VIB,XTAL 4.500MHZ CSA-309
 X851     87-A70-184-010    VIB,XTAL 4.332MHZ HC-49/U

FRONT C.B

 C201     87-010-375-080    CAP,E 330-10 SME
 C202     87-012-350-080    C-CAP,1-25 F
 C203     87-010-197-080    CAP, CHIP 0.01 DM
 C205     87-010-178-080    CHIP CAP 1000P
 C208     87-010-197-080    CAP, CHIP 0.01 DM

 C209     87-010-196-080    CHIP CAPACITOR,0.1-25
 C210     87-010-196-080    CHIP CAPACITOR,0.1-25
 C211     87-010-314-080    C-CAP,S 22P-50V
 C212     87-010-318-080    C-CAP,S 47P-50 CH
 C213     87-010-154-080    CAP CHIP 10P

 C214     87-012-149-080    C-CAP,S 30P-50 CH
 C215     87-010-312-080    C-CAP,S 15P-50 CH
 C216     87-010-400-080    CAP, ELECT 0.47-50V
 C217     87-010-196-080    CHIP CAPACITOR,0.1-25
 CN201    87-099-720-010    CONN,30P TYK-B(P)

 CN202    87-A60-404-010    CONN,3P TKX-P03P-F1
 L206     87-003-098-080    COIL,2.2UH
 LCD201   8Z-CL8-665-110    LCD,ZCL-8
 S200     87-A90-095-080    SW,TACT EVQ11G04M
 S201     87-A90-095-080    SW,TACT EVQ11G04M

 S202     87-A90-095-080    SW,TACT EVQ11G04M
 S203     87-A90-095-080    SW,TACT EVQ11G04M
 S205     87-A90-095-080    SW,TACT EVQ11G04M
 S207     87-A90-095-080    SW,TACT EVQ11G04M
 S208     87-A90-095-080    SW,TACT EVQ11G04M

 S213     87-A90-095-080    SW,TACT EVQ11G04M
 S214     87-A90-095-080    SW,TACT EVQ11G04M

Summary of Contents for LCX-157

Page 1: ...SC STEREO SYSTEM LCX 157 S M Code No 09 003 340 1R1 EZ S R E V I S I O N This Service Manual is the Revision Publishing and replaces Simple Manual S M Code No 09 003 340 1T1 BASIC TAPE MECHANISM TN 21ZSC 2003 BASIC CD MECHANISM DA11T3C ...

Page 2: ...2 SPECIFICATIONS Design and specifications are subject to change without notice ...

Page 3: ...fiés peut entraîner une dangereuse exposition aux radiations ADVARSEL Usynlig laserståling ved åbning når sikkerhedsafbrydereer ude af funktion Undgå udsættelse for stråling This Compact Disc player is classified as a CLASS 1 LASER product The CLASS 1 LASER PRODUCT label is located on the rear exterior This set employs laser Therefore be sure to follow carefully the instructions below when servici...

Page 4: ... 35 SME C122 87 010 213 080 C CAP S 0 015 50 B C123 87 010 196 080 CHIP CAPACITOR 0 1 25 C124 87 010 402 080 CAP ELECT 2 2 50V C126 87 010 408 080 CAP ELECT 47 50V C127 87 010 248 080 CAP ELECT 220 10V C128 87 010 393 080 CAP ELECT 100 35V C129 87 010 248 080 CAP ELECT 220 10V C130 87 010 393 080 CAP ELECT 100 35V C131 87 010 393 080 CAP ELECT 100 35V C132 87 010 237 080 CAP ELECT 1000 16V C136 87...

Page 5: ...87 010 196 080 CHIP CAPACITOR 0 1 25 C828 87 010 196 080 CHIP CAPACITOR 0 1 25 C829 87 010 196 080 CHIP CAPACITOR 0 1 25 C909 87 012 286 080 CAP U 0 01 25 C910 87 012 286 080 CAP U 0 01 25 C940 87 012 286 080 CAP U 0 01 25 C942 87 012 172 080 CAPACITOR CHIP U 10P CH C947 87 012 286 080 CAP U 0 01 25 C949 87 A10 039 080 C CAP U 470P 50 J CH C952 87 012 286 080 CAP U 0 01 25 C958 87 010 197 080 CAP ...

Page 6: ...080 C CAP S 27P 50 CH C560 87 010 263 080 CAP ELECT 100 10V C561 87 010 196 080 CHIP CAPACITOR 0 1 25 C562 87 010 196 080 CHIP CAPACITOR 0 1 25 C563 87 012 156 080 C CAP S 220P 50 CH C565 87 010 263 080 CAP ELECT 100 10V C566 87 010 196 080 CHIP CAPACITOR 0 1 25 C568 87 010 197 080 CAP CHIP 0 01 DM C571 87 010 248 080 CAP ELECT 220 10V C572 87 010 196 080 CHIP CAPACITOR 0 1 25 C573 87 010 197 080 ...

Page 7: ...S G 2SK543 8 8 A Resistor Code Chip Resistor Part Coding Figure Value of resistor Chip resistor Wattage Type Tolerance 1 16W 1 10W 1 8W 1608 2125 3216 5 5 5 CJ CJ CJ Form L W t 1 6 0 8 0 45 2 1 25 0 45 3 2 1 6 108 118 128 A A CHIP RESISTOR PART CODE 0 55 Resistor Code Dimensions mm Symbol 1 16W 1005 5 CJ 1 0 0 5 0 35 104 L t W ANODE CONNECTION FL 13 ST 36GNAK GRID ASSIGNMENT ANODE CONNECTION GRID ...

Page 8: ...S J801 ANTENNA J101 AUX DC JACK R L L R FM 75Ω COXIAL MW LW LOOP 1 2 PT101 POWER TRANSFORMER 1 2 3 4 5 6 7 8 1 15 16 30 1 30 29 11 1 12 22 2 1 8 1 9 1 4 7 10 13 16 18 TO FRONT C B CN201 RCH RPH LCH EH M1 DECK MOTOR S1 MOTOR SW S3 PLAY SW M 8 7 6 5 4 3 2 1 NOTE E C B E C B E C B MAIN C B CHIP PARTS AC C B CHIP PARTS 1 1 12 13 24 4 5 8 C182 C181 ...

Page 9: ...12 11 IC BLOCK DIAGRAM IC M62495AFP IC LA6541D IC LA1837NL IC LC72131D ...

Page 10: ...AC C B 1 2 AC C B 2 2 R SIGNAL PB FM REC AM J105 INV IC301 CASSETTE PER AMP BIAS OSC BEAT CUT REG REG REG REG REG SW HOLD DET HOLD DET POWER AMP IC102 FUNCTION SWITCH POWER CONT POWER ON OFF J101 JACK PIN 3P MSP J101 JACK 3 5 ST PHONES SPEAKERS F101 3 15A 250V 230V 50Hz 470 35 820 820 ...

Page 11: ...2 MAIN C B 2 2 R R FM IF LW ANT SW MW LW SW AM RF AMP LW OSC SW AM IF ADJ DC BALANCE ADJ IC771 FM AM IF STEREO TUNER SYSTEM SIGNAL PB FM REC AM BAND SW D942 D944 L773 2 2µH TUNER ON OFF SWITCH 0 015 0 015 EZ K BEAT VM 5V FM 75Ω MW LW LOOP J801 ANTENNA ...

Page 12: ...D PARTS FRONT C B INSERTED PARTS LED C B INSERTED PARTS 1 1 2 3 1 3 1 5 10 15 20 25 30 35 40 43 ROCK JAZZ POP AUX POWER SET TUNER BAND STOP START TIMER SLEEP REMOTE SENSOR PLAY CLEAR PAUSE TO MAIN C B J105 1 3 1 6 1 5 15 16 20 25 30 10 1 1 2 2 15 16 S101 DOOR SW 29 30 LCD201 DISPLAY Cxxx Rxxx NOTE E C B E C B ...

Page 13: ... C D E F G H I J K 20 19 WIRING 3 CD FRONT CHIP PARTS CD C B CHIP PARTS FRONT C B CHIP PARTS LED C B CHIP PARTS MOTOR C B PIN3 M3 SW1 _ M2 M3 SPINDLE MOTOR SW1 INSIDE LIMIT SW M2 SLED MOTOR _ CN510 1 1 2 16 15 6 OPTICAL PICK UP SF P101NR ...

Page 14: ...22 21 SCHEMATIC DIAGRAM 3 FRONT ...

Page 15: ...24 23 SCHEMATIC DIAGRAM 4 CD ...

Page 16: ...26 25 VOLTAGE CHART ...

Page 17: ...28 27 ...

Page 18: ...30 29 ELECTRICAL ADJUSTMENT ...

Page 19: ...nal to noise ratio More than 38dB Input 74dB at 999kHz Distortion Less than 3 0 Input 74dB at 999kHz Auto stop level 50 10 15dB at 999kHz Intermediate frequency 450kHz PRACTICAL SERVICE FIGURE LW SECTION Sensitivity 58 5dB at 144kHz 55 5dB at 198kHz 52 5dB at 290kHz Signal to noise ratio More than 25dB at 198kHz Intermediate frequency 450kHz DECK SECTION Tape speed 3000Hz 3 2 Wow flutter Less than...

Page 20: ...CD control CD control open drain output Clock shift output L during shift open drain output 8 Hz time base input Reset input Input pin Output pin for 32 768kHz crystal oscillation GND Main clock input output 5 76 MHz 5V KEY0 A D input KEY1 A D input RDS signal level input A D input CD control CD door SW detection SW input L at CLOSE CD pick up detection SW input L at ON Tape detection SW input A D...

Page 21: ... O O Tape stop input LCD common output Initial setting input Beat selector output H during selection CMOS output GND 5V Not used Tuner chip enable output CMOS output H output during CD function CMOS output H output during TU function Open drain output REC mute output H during mute Open drain output REC PB select output H during PB Open drain output Mute output H during mute Open drain output Power...

Page 22: ...nts are connected between the TD and VR pins Tracking phase compensation setting pin Tracking jump signal kick pulse amplitude setting pin Tracking control signal output pin Focusing control signal output pin Pin to which external focusing phase compensation constants are connected between the FD and FA pins Pin to which external focusing phase compensation constants are connected between the FD a...

Page 23: ...the DSP Digital system GND Output pin to which external focus search smoothing capacitor is connected Tracking Balance Control EF balance variable range setting pin No connection Disc defect detector output pin Reference clock input pin 4 23 MHz of the DSP is input Microprocessor command clock input pin Microprocessor command data input pin Microprocessor command chip enable input pin Detect RF RF...

Page 24: ...t L Track detect signal input pin Schmidt input Tracking error signal input pin Schmidt input Tracking OFF output pin Tracking gain selection output pin Gain boost at L Track jump control signal output pin Three level output is possible using command EFM data playback clock monitoring pin 4 3218 MHz when phase is locked in Sync signal detection output pin H when the sync signal which is detected f...

Page 25: ...the 7 35 kHz sync signal which is generated by dividing frequency of crystal oscillator Subcode Q output standby output pin Read write control input pin Schmidt input Subcode Q output pin Command input pin from microprocessor Command input read clock or subcode read input clock from SQOUT pin LC78622 reset input pin Set this pin to L once when the main power is turned on Test signal output pin Use...

Page 26: ...OWER 13 8A CLB 010 010 KEY SKIP 14 8A CLB 011 010 KEY P S 15 8Z CDB 170 010 BASE CHUCK 16 88 CD9 211 210 RING CHUCK 17 87 036 368 010 MAGNET 18 8A CLB 002 010 LID CD 19 8Z CL8 683 010 CONN ASSY 2P CD DOOR 20 8Z CL8 205 010 SPR T CD 21 8A CLB 003 010 CHAS CD 22 M8 ZZK E90 070 DA11T3C 23 88 CT6 206 010 CUSHION CD 24 8Z CL8 681 010 CONN ASSY 6P CD MOTOR 25 8A CLB 020 010 CABI REAR 26 8Z CL8 682 010 F...

Page 27: ...VIEW 1 1 1 2 3 5 6 4 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 23 24 25 26 27 28 29 7 HT SINK CHAS MAIN TN 21ZSC P C B P C B a a b b C C D D C H C D C C C C D F 31 D G G 34 33 F 32 35 36 30 B B E E A A A H H H H A A P C B ...

Page 28: ...7820MVEI 26 S1 921 140 240 REW BUTTON LEVER 27 S1 921 140 250 FF BUTTON LEVER 28 S1 921 140 260 STOP BUTTON LEVER 29 S1 921 140 610 PAUSE BUTTON LEVER 30 S1 821 100 700 FF GEAR 31 S1 921 050 060 SENSER 32 S1 921 053 100 TAKE UP REEL ASSY 33 S1 829 100 010 PACK SPRING 34 S1 921 050 150 S REEL HUB 35 S1 921 050 220 BACK TENSION SPRING 36 S1 921 140 220V REC BUTTON LEVER 37 S1 921 140 170 P S LEVER S...

Page 29: ...ECHANISM PARTS LIST 1 1 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 DA11T3C B B A A SHAFT SLIDE 1 2 3 MOTOR C B SPINDLE MOTOR M3 CHASSIS SF P101NR ...

Page 30: ...4 110 CORD SPKR GRY The speakers that are supplied with the following models are dedicated speakers for their respective models Speakers of LCX 137 and those of LCX 157 have completely the same outside appearance but have no compatibility each other Therefore be careful not make mistake when using the speakers of the following models Speaker wire color is gray 8Z CL8 904 110 Speaker wire color is ...

Page 31: ...NO KANRI DESCRIPTION NO ACCESSORIES PACKAGE LIST 1 8A CLB 906 010 IB EZ 9L B 2 87 A90 030 010 ANT LOOP AM NC C 3 87 A90 118 010 ANT WIRE FM Z 4 87 A91 017 010 PLUG CONVERSION JT 0476 5 8A CLB 961 010 RC UNIT RC AAT11 ...

Page 32: ...2 11 IKENOHATA 1 CHOME TAITO KU TOKYO 110 JAPAN TEL 03 3827 3111 737004 Printed in Singapore ...

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