Aiwa CX-JT8 Service Manual

SERVICE MANUALCOMPACT DISC DECK RECEIVERAEP ModelUK ModelE ModelAustralian ModelCX-JT8Ver 1.0 2003.049-877-255-01 Sony Corporation2003D0500-1 Home Au

CX-JT8101two screws(BVTP3 × 10)7case (top)5claw3claw4claw62claw1two screws(BVTP3 × 10)6two screws(BVTP3 × 10)2three screws(case3 TP2)5case (side-R)7th

CX-JT8113-4. TRAY PANEL3-5. CD MECHANISM DECK (CDM74F-K6BD71A)1Turn the loading gear in the direction of arrow A.A4tray panel3four claws2Pull-out t

CX-JT8123-6. FRONT PANEL SECTION3-7. MECHANICAL DECK2connector (CN310)4connector (CN203)3connector (CN202)5wire (flat type) (9 core)(CN311)7front p

CX-JT8136rear cabinet section5five screws(BVTP3 × 10)2connector (CN303)1wire (flat type) (11core: except AEP, UK)(15core: AEP, UK)4cover (duct)3two sc

CX-JT8143-10. POWER BOARD3-11. TRANSFORMER BOARD4power board2two screws(BVIT3B-8R W/O SLOT)3two screws(BVIT3B-8R W/O SLOT)1connector (CN902)3trans h

CX-JT8153-12. TABLE ASSY3wire (flat type) (5 core)(CN702)4hook1Turn the loading gearin the direction of arrow A.A5two claws2Pull-out the table assy.6

CX-JT8163-14. MOTOR (LD) BOARD3-15. BASE UNIT (BU-K6BD71A)2connector(CN704)3two screws(BTTP M2.6)4motor (LD) board1belt (loading)1two screws(PTPWH M

CX-JT8171Remove twosolders.qaBD board2two screws(P2 × 3)6claw7gear (A)8gear (B)5wire (flat type) (16 core)(CN708)0motor gear assy (SLED)(M701)3screw (

18CX-JT8SECTION 4TEST MODE[COLD RESET]• The cold reset clears all data including preset data stored in theRAM to initial conditions. Execute this mo

19CX-JT8[AGING MODE]• This mode can be used for operation check of CD section andtape deck section.CD section and tape deck section work in parallel.I

CX-JT82Notes on chip component replacement•Never reuse a disconnected chip component.• Notice that the minus side of a tantalum capacitor may be dam-a

20CX-JT8[GC TEST MODE]• This mode is used to check the fluorescent indicator tube, LEDand key.Procedure:1. Press the [POWER] key to turn the power ON.

CX-JT82121CD SECTIONNote:1. CD Block is basically designed to operate without adjustment. Therefore,check each item in order given.2. Use YEDS-18 (3-7

CX-JT82222SECTION 6DIAGRAMS6-1. BLOCK DIAGRAM – CD Section –87910807970 LIMIT SW20TDO1810VO3(+)FOIN20TIN3SPIN7LDS25SLIN17 VO3(–)11 VO2(+)12 VO2(–)2

CX-JT8232310CAPSTAN/REELMOTOR DRIVEQ60111PLUNGER DRIVE(DECK-A)Q602MMTAPE MECHANISMDECK BLOCK(CAPSTAN/REEL)(DECK-A)(DECK-B)LED DRIVER,TAPE MECHANISM CO

CX-JT82424J221R-CHPHONESFRONTSPEAKER+––+RLJK503 (1/2)R-CHR-CH–VL–VP+VP–VHOVER LOADDETECTQ505OUTPUT LEVELDETECTQ23, 24DC DETECTQ5, 6BIASQ507, 509HOLDQ7

CX-JT825256-4. NOTE FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMSNote on Printed Wiring Board:• X : parts extracted from the component side.

CX-JT826266-5. PRINTED WIRING BOARD – BD Board – • See page 25 for Circuit Boards Location. :Uses unleaded solder.Ref. No. Location• Semiconductor

CX-JT82727CN708C711C712C721C719C720C718C717C715C716C714C706C707R739R740R741M702M701R738C747C748R707C705C709R730C746 C708 R729C743C744R725R726R731C754C

CX-JT82828C715C731C735C736R711R731R721R722R723R735R732R733R734Q731C751IC712IC701CN704C737R713R712C741JW702JW703JW704JW705JW706JW707JW708JW711CN703CN70

CX-JT829296-8. SCHEMATIC DIAGRAM – CHANGER Section – • See page 52 for IC Block Diagrams.C741R702 R701D701C751C715R713R712 R711D711CN721R722R721R723

CX-JT83TABLE OF CONTENTS1. SERVICING NOTES ... 42. GENERALLocation of Controls ...

CX-JT830306-9. SCHEMATIC DIAGRAM – MAIN Board (1/4) (Suffix-11) – • See page 52 for IC Block Diagram.D102R101R102C103R304 R303C351R302R301C102C101C3

CX-JT831316-10. SCHEMATIC DIAGRAM – MAIN Board (2/4) (Suffix-11) – • See page 52 for IC Block Diagram. • See page 52 for Waveforms.R233R425R424CN309

CX-JT832326-11. SCHEMATIC DIAGRAM – MAIN Board (3/4) (Suffix-11) – • See page 52 for IC Block Diagram.CN311CN312CN306CN310C385R335R493 C491C315R492R

CX-JT833336-12. SCHEMATIC DIAGRAM – MAIN Board (4/4) (Suffix-11) –R484CN304D315 D313CN307R346R387C397R386R388C345C372D364R431R379D314R482 R481C399C4

CX-JT83434• Semiconductor Location6-13. PRINTED WIRING BOARD – MAIN Board (Suffix-11) – • See page 25 for Circuit Boards Location. :Uses unleaded

CX-JT83535D101 D-13D102 C-14D205 L-6D206 M-7D301 N-11D302 M-11D303 N-12D304 M-12D305 G-5D306 E-9D307 N-10D311 O-14D312 K-13D313 F-8D314 E-8D315 E-9D31

CX-JT83636D102R101R102C103R304 R303C351R302R301C102C101C301R317C321C323C327C331C333R319C325C319R330C320C324C337R323C332C334C328C326R326C353C303C318R31

CX-JT83737R233R425R424CN309C402C202C201C203C204C237C244C232C266C248C267R267C269R271C273C247C249C254R284C253R278R270R282R215C260C258R287R288C259R235R28

CX-JT838386-17. SCHEMATIC DIAGRAM – MAIN Board (3/4) (Suffix-13) – • See page 52 for IC Block Diagram.The components identified by mark 0 or dottedl

CX-JT839396-18. SCHEMATIC DIAGRAM – MAIN Board (4/4) (Suffix-13) –R484CN304D315 D313CN307R346R387C397R386R388C345C372D364R431R379D314R482 R481C399C4

4CX-JT8SECTION 1SERVICING NOTESNOTES ON HANDLING THE OPTICAL PICK-UPBLOCK OR BASE UNITThe laser diode in the optical pick-up block may suffe

CX-JT84040JW540C37C41C34C529RY501CN501CN502C11C12JW544JW571JW577JW578JW579JW580JW581JW585JW586JW28JW29JW30JW34JW38JW39JW40JW41JW43JW53JW58JW59JW587C14

CX-JT841416-20. PRINTED WIRING BOARD – POWER Board – (E, SP, AUS models) • See page 25 for Circuit Boards Location. :Uses unleaded solder.JW540C37

CX-JT842426-21. SCHEMATIC DIAGRAM – POWER Board (1/2) –R110R109R108R107R106R105R104R103EP01R12R14R13R563 R564 R567 R568R580C531D13R16R6 R7 R8 R9D12R

CX-JT843436-22. SCHEMATIC DIAGRAM – POWER Board (2/2) –The components identified by mark 0 or dottedline with mark 0 are critical for safety.Replace

CX-JT844446-23. PRINTED WIRING BOARDS – CD BUTTON/HEADPHONE/MICROPHONE Boards – • See page 25 for Circuit Boards Location. :Uses unleaded solder.C

CX-JT845456-24. SCHEMATIC DIAGRAM – CD BUTTON/HEADPHONE/MICROPHONE Boards –R331 R330 R329 R328S327S328S329S330R341R342R332LED303LED302LED301CN302CN1

CX-JT84646C915C914C505X901X902C509D504D505D506D503R505D502C504R245R247R252R248R249R250CN301S321S311S312S313S315S316S317S318S301R228R231R235D402R312R41

CX-JT847476-20. SCHEMATIC DIAGRAM – PANEL Board – • See page 52 for IC Block Diagram. • See page 52 for Waveforms.CN701D101R111R110R109R108R107R106R

CX-JT84848 JW910JW911JW912JW913JW914JW915JW916JW917JW918JW919JW920JW921JW922JW923JW924JW925JW926JW927JW928JW929 JW930JW931JW932JW933JW934JW935

CX-JT849496-28. PRINTED WIRING BOARD – TRANSFORMER Board – (E, SP, AUS models) • See page 25 for Circuit Boards Location. :Uses unleaded solder.JW

5CX-JT8HOW TO OPEN THE DISC TRAY WHEN POWER SWITCH TURNS OFF.2 Turn the loading gear in the direction of arrow A.1 Remove the case (side-L).

CX-JT850506-29. SCHEMATIC DIAGRAM – TRANSFORMER BOARD – (AEP, UK, CIS, E51 models)The components identified by mark 0 or dottedline with mark 0 are

CX-JT851516-30. SCHEMATIC DIAGRAM – TRANSFORMER BOARD – (E, SP, AUS models)The components identified by mark 0 or dottedline with mark 0 are critica

CX-JT85252• Waveforms– BD Board –1 IC721 4 (RF) (CD Play Mode)2 IC721 qd (TE) (CD Play Mode)3 IC721 qg (TE) (CD Play Mode)4 IC721 rk (XOUT)1.3 Vp-pApp

53CX-JT8– DRIVER Board –IC701, 712 BA6956AN1 2 3 4 5 6 7 8 9CONTROL LOGICTSDVREFOUT2OUT1RNFVMVCCFINGNDRIN– MAIN Board –IC201 HA12237F31PB-NF1 (L)32AIN

54CX-JT8IC303 NJM2156M (TE2)– PANEL Board –IC501 MM1614A25VIN4VOUTGND1CONT3NOISEDRIVERTHERMALSHUTDOWNBIASREFERENCE+–CURRENTLIMITTERBBEBIASMACH31918HOU

55CX-JT86-31. IC PIN FUNCTION DESCRIPTION• MAIN BOARD IC309 BU2099FV (MULTI CONTROLLER)Pin No. Pin Name I/O Description1 VSS — Ground terminal2NC

56CX-JT8• MAIN BOARD IC310 BU2099FV ( BASS BOOST CONTROLLER)Pin No. Pin Name I/O Description1 VSS — Ground terminal2NC—Not used3DATA I Serial data i

57CX-JT8• PANEL BOARD IC201 BU2099FV (LED DRIVER)Pin No. Pin Name I/O Description1 VSS — Ground terminal2NC—Not used3 DATA I Serial data input from

58CX-JT8• PANEL BOARD IC202 BU2099FV (LED DRIVER, TAPE MECHANISM CONTROLLER)Pin No. Pin Name I/O Description1 VSS — Ground terminal2NC—Not used3 DAT

59CX-JT8• PANEL BOARD IC901 LC8767962B-51F6 (SYSTEM CONTROLLER)Pin No. Pin Name I/O Description1 O-SYS-MUTE O Line muting on/off control signal outp

6CX-JT8SERVICE POSITION– CD mechanism deck –– Tape mechanism deck –main board (CN312)Connect wire (flat type) (19 core) tomain board (CN312) and BD

60CX-JT8Pin No. Pin Name I/O Description51 FIX0 — Not used52 I-B-PHOTO I Deck-B tape reel rotating detection signal input from the tape mechanism deck

61CX-JT8•AbbreviationAUS: Australian modelE51 : Chilean and Peruvian modelsSP : Singapore model7-1. CASE SECTIONSECTION 7EXPLODED VIEWS• Items mark

62CX-JT87-2. FRONT PANEL SECTION-1Ref. No. Part No. Description RemarkRef. No. Part No. Description Remark51 4-245-125-01 KNOB, ROTARY VOLUME52 4-24

63CX-JT8Ref. No. Part No. Description RemarkRef. No. Part No. Description Remark101 1-688-545-11 HEADPHONE BOARD102 3-229-336-01 SCREW, +BVWH TAPPING1

64CX-JT87-4. FRONT PANEL SECTION-3Ref. No. Part No. Description RemarkRef. No. Part No. Description Remark151 4-245-124-01 KEY, RDS152 4-245-122-01

65CX-JT87-5. FRONT PANEL SECTION-4Ref. No. Part No. Description RemarkRef. No. Part No. Description Remark201 4-245-115-01 WINDOW, CASSETTE202 4-245

66CX-JT87-6. CHASSIS SECTION-1Ref. No. Part No. Description RemarkRef. No. Part No. Description Remark252 4-951-620-41 SCREW (2.6), +BVTP253 1-693-62

67CX-JT87-7. CHASSIS SECTION-2The components identified by mark 0 or dottedline with mark 0 are critical for safety.Replace only with part number spe

68CX-JT8Ref. No. Part No. Description RemarkRef. No. Part No. Description Remark501 -243-815-01 TABLE (LOADING)502 4-218-252-61 SCREW (+PTPWH M2.6), F

69CX-JT87-9. CD MECHANISM DECK SECTION-2(CDM74F-K6BD71A)Ref. No. Part No. Description RemarkRef. No. Part No. Description Remark551 4-218-252-61 SC

7CX-JT8SECTION 2GENERALThis section is extracted frominstruction manual.• LOCATION OF CONTROLSEnMain unit: rearRefer to the pages indicated in pare

70CX-JT8Ref. No. Part No. Description RemarkRef. No. Part No. Description Remark601 X-4955-707-1 PULLEY (A5) ASSY, CHUCKING602 1-471-035-11 MAGNET ASS

71CX-JT8Ref. No. Part No. Description RemarkRef. No. Part No. Description Remark651 A-4732-699-A BD BOARD, COMPLETE652 3-713-786-51 SCREW (M2X3)653 2-

72CX-JT8SECTION 8ELECTRICAL PARTS LISTBDRef. No. Part No. Description Remark Ref. No. Part No. Description RemarkA-4732-699-A BD BOARD, COMPLETE***

Ref. No. Part No. Description RemarkRef. No. Part No. Description Remark73CX-JT8BD CD BUTTONFB806 1-550-907-21 FERRITE 0uHFB807 1-550-907-21 FERRI

Ref. No. Part No. Description RemarkRef. No. Part No. Description Remark74CX-JT81-687-135-11 DRIVER BOARD*************< CAPACITOR >C715 1-126-93

Ref. No. Part No. Description RemarkRef. No. Part No. Description Remark75CX-JT8C314 1-107-714-11 ELECT 10uF 20% 16VC315 1-126-963-11 ELECT 4.7uF 20%

Ref. No. Part No. Description RemarkRef. No. Part No. Description Remark76CX-JT8CN306 1-778-982-21 CONNECTOR, BOARD TO BOARD 13PCN307 1-778-982-21 CON

Ref. No. Part No. Description RemarkRef. No. Part No. Description Remark77CX-JT8Q330 8-729-120-28 TRANSISTOR 2SC1623-L5L6Q331 6-550-289-01 TRANSISTOR

Ref. No. Part No. Description RemarkRef. No. Part No. Description Remark78CX-JT8R375 1-216-829-11 METAL CHIP 4.7K 5% 1/10W(E, E51, SP, AUS)R375 1-216-

Ref. No. Part No. Description RemarkRef. No. Part No. Description Remark79CX-JT8A-4734-174-A PANEL BOARD, COMPLETE (AEP, UK)A-4734-290-A PANEL BOARD,

8CX-JT8EnButtons with the same or similar names with the main unitbasically have the same function.1 POWER2 1-0/10, +10Selects a CD track of the speci

Ref. No. Part No. Description RemarkRef. No. Part No. Description Remark80CX-JT8D502 8-719-991-33 DIODE 1SS133T-77D503 8-719-991-33 DIODE 1SS133T-

Ref. No. Part No. Description RemarkRef. No. Part No. Description Remark81CX-JT8R104 1-216-821-11 METAL CHIP 1K 5% 1/10WR105 1-249-417-11 CARBON 1K 5%

Ref. No. Part No. Description RemarkRef. No. Part No. Description Remark82CX-JT8R414 1-216-797-11 METAL CHIP 10 5% 1/10W(E, E51, SP, AUS)R415 1-247-80

Ref. No. Part No. Description RemarkRef. No. Part No. Description Remark83CX-JT8R949 1-216-845-11 METAL CHIP 100K 5% 1/10WR950 1-249-441-11 CARBON 100

Ref. No. Part No. Description RemarkRef. No. Part No. Description Remark84CX-JT8C507 1-100-152-11 CERAMIC CHIP 100PF 5% 100VC508 1-100-152-11 CERAMIC

Ref. No. Part No. Description RemarkRef. No. Part No. Description Remark85CX-JT8< TRANSISTOR >Q5 6-550-289-01 TRANSISTOR 2SA1235FQ6 8-729-120-28

Ref. No. Part No. Description RemarkRef. No. Part No. Description Remark86CX-JT8R70 1-216-835-11 METAL CHIP 15K 5% 1/10WR71 1-216-833-11 METAL CHIP 10

Ref. No. Part No. Description RemarkRef. No. Part No. Description Remark87CX-JT8R561 1-216-843-11 METAL CHIP 68K 5% 1/10WR562 1-216-857-11 METAL CHIP

Ref. No. Part No. Description RemarkRef. No. Part No. Description Remark88CX-JT80 302 1-792-948-12 CORD, POWER (E)308 1-769-939-11 WIRE (FLAT TYPE) (1

89CX-JT8MEMO

CX-JT89• This set can be disassembled in the order shown below.3-1. DISASSEMBLY FLOWSECTION 3DISASSEMBLYSet3-2. CASE(SIDE-L/R)(Page 10)3-3. CASE (TO

CX-JT8REVISION HISTORYClicking the version allows you to jump to the revised page.Also, clicking the version at the upper right on the revised page a