Kenwood KDC-138/138CR Service Manual Download

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This product uses Lead Free solder.

This product complies with the

RoHS

directive for the European market.

SERVICE MANUAL

KDC-138/138CR

KDC-139/139S

CD RECEIVER

* Depends on the model. Refer to the parts list.

Panel assy
KDC-138 (A64-4276-02)

Panel assy
KDC-138CR (A64-4277-02)

TDF SPARE-PANEL

MAIN UNIT NAME

TDF PARTS No.

TDF NAME

KDC-138

Y33-2830-63

TDF-81D

KDC-138CR

Y33-2830-64

TDF-81DCR

KDC-139

Y33-2820-65

TDF-139

Panel assy
KDC-139

(A64-4286-02)

KDC-139S (A64-4287-02)

* Carrying case
(W01-1692-05)

Mounting hardware assy
(J21-9716-03)

Lever
(D10-4589-04) x2

DC cord
(E30-6415-15)

Screw set
(N99-1757-05)

* Escutcheon
(B07-xxxx-xx)

* Plastic cabinet assy
(A02-2736-03)

Screw (4x16)
(N84-4016-48)

KDC-138

KDC-138CR

KDC-139

KDC-139S

Y33-2820-66

TDF-139S

Summary of Contents for KDC-138/138CR

Page 1: ...el assy KDC 138CR A64 4277 02 TDF SPARE PANEL MAIN UNIT NAME TDF PARTS No TDF NAME KDC 138 Y33 2830 63 TDF 81D KDC 138CR Y33 2830 64 TDF 81DCR KDC 139 Y33 2820 65 TDF 139 Panel assy KDC 139 A64 4286 02 KDC 139S A64 4287 02 Carrying case W01 1692 05 Mounting hardware assy J21 9716 03 Lever D10 4589 04 x2 DC cord E30 6415 15 Screw set N99 1757 05 Escutcheon B07 xxxx xx Plastic cabinet assy A02 2736 ...

Page 2: ...ET BU DET PS1 1 PS1 2 PS1 3 P ON FL PS2 1 PS2 2 9 5 10 BU DET 1 1 2 MUTE 1 2 3 3 ROM CORRECTION NOT USED 1 REAR SW 1 1 1 P ANT P CON B U ACC PHONE SP OUT PS2 1 PS2 2 PS1 1 PS1 2 PS1 3 R103 1 DPU1 CD PLAYER UNIT X32 598x xx BOARD X34 MOTHER E F A C B TR COIL FO COIL APC IC1 16 93MHz CLOCK IC6 8V SW 3 3V REG IC3 LOADING RF AMP SERVO PROCESSOR MOTOR DRIVER MOTOR SPINDLE 3 3V REG IC2 S2 S4 S1 S3 ONLY ...

Page 3: ...4 transistors goes Hi pre out is muted Q705 Mute Driver for Pre out ON when the base goes Lo Q801 Electric Discharge Circuit for C805 SVR ON when the base goes Lo Q901 DC Offset DET ON when the base goes Hi after Q902 s and Q903 s outputs are separated Q902 903 DC Offset DET SW ON when the bases go Lo after IC6 s SP OUTs DC are separated SWITCH UNIT X16 616x xx Ref No Application Function Operatio...

Page 4: ...upply Control Power Supply Control from MECHA µ COM Q6 is ON when pin 63 P_ON1 of IC1 is Hi Q9 Power Supply Control Power Supply Control from system µ COM Q6 is ON when pin 125 MSTOP of IC1 is Hi D1 2 5V Force Voltage Prevention 5V Force Voltage Prevention from MECHA µ COM side D3 Laser Diode Protection Prevents reverse bias which is applied to laser Laser destruction prevention D4 Static Electric...

Page 5: ...writing request H Writing 22 23 NC Not used Output L fixed 24 PON FL Not used Output L fixed 25 NC Not used Output L fixed 26 PON PANEL I O Panel 5V control ON L Momentary power down Panel detached Hi Z 11 minutes after ACC OFF Hi Z 27 28 NC Not used Output L fixed 29 AUD SCL I O E VOL clock output 30 AUD SDA I O E VOL data input output 31 VFD SYS DATA O LCD data output 32 VFD PAN DATA I LCD data ...

Page 6: ...ntary power down Power OFF L 68 MUTE I O Mute L Mute OFF Hi Z Mute ON 69 ANALOG CON O AUX LX audio switching AUX H Switches after 100ms after first out mute begins to work LX Other source L 70 LX RST O Forced reset to slave unit H Reset L Normal 71 LX CON O Start up request to slave unit H Slave unit ON L Slave unit OFF 72 LX MUTE I Mute request from slave unit H Mute ON L Mute OFF 73 LX REQ M O C...

Page 7: ...ly IC control r Refer to the truth value table 93 PS1 2 O Power supply IC control r Refer to the truth value table 94 PS1 3 O Power supply IC control r Refer to the truth value table 95 NC Not used Output L fixed 96 AVSS 97 REF CON O VREF control Connects to VREF 98 VREF 99 AVCC 100 LX DATA S I Data from slave unit Pull down GND MICROCOMPUTER STERMINAL DESCRIPTION Truth value table q CD motor cont...

Page 8: ... is disconnected When having started up in the test mode change the LINE MUTE inhibition time from 10 seconds to 1 second When operating in the test mode even if a DC offset error occurs detection information is not written in the E2PROM Forced disc ejection is prohibited in the test mode How to clear the test mode Procedure Note Reset momentary power down ACC OFF Power OFF Panel detached Clearing...

Page 9: ...the disc operation time Cleared only for displayed media 5 Disc EJECT times display E J C X X X X X Disc EJECT times display MAX 65535 times 5 While disc EJECT times is displayed press and hold for 2 seconds or longer to clear disc EJECT times 6 Panel open close times display P C X X X X X PANEL open close times display MAX 65535 times 6 Press the key for more than 2 seconds while the PANEL open c...

Page 10: ...f errors is displayed in case there is no error 3 X X E J E R Ejection error switch 3 XX Number of errors is displayed in case there is no error 4 X X E J E R Ejection error switch 4 XX Number of errors is displayed in case there is no error CD time code error count data display Missing counts L O S E CD time code error count data Missing counts mode display X X C D D A Number of CD DA count error...

Page 11: ...lear 9 8 3 Clear the FST adjustment mode Returns to normal display and the test mode is retained After completing the FST adjustment if You wish to clear the test mode You can do this using the reset button Test mode specifications in CD source Procedure in CD DA media KTD 02A Key Description of display Description Track up procedure Every time pressed jumps to the track shown below No 9 No 15 No ...

Page 12: ...fault value 0 LPF Sub woofer VOL knob and key Adjust to 2 steps of 80Hz Through Default value Through Only in models with Sub Woofer output Volume Offset VOL knob and key Adjust to 2 steps of 8 0 Default value 0 Other than model with internal AUX Adjust to 3 steps of 8 0 8 Default value 0 Only models with internal AUX Procedure Note Press the B BOOST key for 1 second or longer Switch Bass Boost No...

Page 13: ... offset error information DC offset error 1 display Provides information on whether there is an improper connection or another error DC offset error 2 display Provides information on the number of capacitor leaks Clearing DC offset error detection data E2PROM data clearing Procedure Note While pressing and holding 3 key and 6 key reset start Entering DC offset error display mode Procedure Display ...

Page 14: ...ode Press key or key R E A D Front end A1 Mother unit X34 Data transfer processing W R T Mother unit X34 Front end A1 Data transfer processing In the above ROM READ status key for 2 seconds or longer R Front end A1 Mother unit X34 ROM data is being transferred R O K Front end A1 Mother unit X34 ROM correction transfer security and other data is OK R 0 2 Front end A1 Mother unit X34 Transfer of sec...

Page 15: ...nt end A1 is supplied as a service part in which data was inserted Data to be copied ROM correction data Other data Security data DEMO MODE ON OFF status POWER ON time For maintenance Playback time For maintenance EJECT count For maintenance Panel open close count For maintenance CD I2C status For maintenance CD offset error code For maintenance CD sound skips count For maintenance CD time code no...

Page 16: ...ata transfer mode Turn power off Remove front end A1 FRONT END A1 E2PROM Mother unit X34 r Install new front end A1 No ROM correction or other data status FRONT END A1 E2PROM E2PROM Mother unit X34 t Turn power on Press and hold the 1 and 3 keys and press reset button Enter the system in the test mode Press B BOOST key Start transferring ROM data Press or Select WRT Press key for 1 second or longe...

Page 17: ...th ROM correction FRONT END A1 E2PROM E2PROM Mother unit X34 w Turn power on Press and hold the 1 and 3 keys press reset button Enter the system in the test mode Press B BOOST key ROM data System enters data transfer mode Press or Select WRT Press key for 1 second or longer Data transfer FRONT END A1 E2PROM E2PROM Mother unit X34 e WRT OK1 W O1 In case of 4 In case of 5 Press key Exit ROM data tra...

Page 18: ...atus FRONT END A1 E2PROM E2PROM Mother unit X34 t Turn power on Press and hold the 1 and 3 keys press reset button Enter the system in the test mode Press B BOOST key Enter the system in ROM data transfer mode Press or Select WRT Press key for 1 second or longer Data transfer FRONT END A1 E2PROM E2PROM Mother unit X34 y WRT OK W OK Press key Exit ROM data transfer mode ROM DATATRANSFER PROCESSES ...

Page 19: ... C11 C12 R1 C6 C7 CP2 R4 R5 R6 R7 R8 R9 R10 R11 R21 R24 R25 R26 R27 R28 R29 1 19 20 2 16 17 32 33 48 49 64 1 AUX GND AUX L AUX R KS6 KI3 KI5 KI2 KS2 KI1 KI4 D GND KS4 KS3 PAN5 ESD GND RST DET SW5V GURD LED B R CCW R CW REMO DATAL CE CLK DATAS J1 D38 D31 D32 D33 D34 D35 D36 D37 IC1 SWITCH UNIT X16 616x xx J76 0454 02 Refer to the sche matic diagram for the values of resis tors and capacitors PC BOA...

Page 20: ...3 W102 W65 R331 R202 R205 R206 R218 R225 R227 R318 R956 C11 C9 R105 R306 R317 R340 R406 R598 TH1 C811 C3 C4 C12 C14 C101 C102 C202 C203 C204 C205 C809 C812 C807 C813 C814 C820 R17 R104 R108 R111 R113 R115 R201 R203 R321 R226 R228 R229 R320 R315 R409 R803 R806 R808 R952 R34 1 2 C816 C815 C818 C819 R12 R13 R14 R16 R110 R114 R971 R204 R223 R301 R957 R303 R316 R305 R307 R313 R310 R314 R312 C817 R408 R...

Page 21: ...04 R803 R347 19 20 C306 C307 C601 C602 C818 C311 C310 C817 R348 R349 R701 R702 R707 R708 R802 R958 C509 R491 R492 R404 R793 1 1 16 9 1 1 3 1 24 8 4 5 8 20 15 14 11 10 B E B E B E B E B E 1 5 7 6 10 9 13 11 12 8 4 3 2 B E B E J3 A1 J2 J4 J5 D603 D306 D304 D305 P1 D602 D601 D604 D605 D606 CN4 Q705 Q401 Q701 Q702 Q703 Q704 IC9 IC10 IC3 A DATA A CLK S METER X34 564x xx Ref No Address IC1 IC2 IC3 IC4 I...

Page 22: ...89 R88 CP1 DGS SGD C62 C61 C59 R78 R77 C75 R85 R92 R131 R38 R37 R31 R41 R52 R55 S2 D1 Q3 D2 S1 S3 CD PLAYER UNIT X32 5980 04 J76 0448 02 Refer to the schematic diagram for the values of resistors and capacitors PC BOARD COMPONENT SIDE VIEW X32 5980 04 Ref No Address Q3 4Q ...

Page 23: ...E BE C BC E BE E B CN1 CN2 Q6 Q8 Q9 Q7 D4 Q4 D3 IC2 IC1 IC6 CD PLAYER UNIT X32 5980 04 J76 0448 02 VCC SLD GND FCS FCS C D A PD MUTE SLD A8V TP24 A GND TP14 BU5V D GND VR ARF VREF E TE F IOP TRK TRK LD RF GND IOP OSCIN Vpp P ON1 SRVMON1 TESTIN0 P ON2 SRVMON0 TX NPWDOWN SDA FDATA SCL FCLK OCDSEL RST FCS TRK SPDL SRVM SPDL DATA CLK Rch MSTOP MRST LOE LIM TP11 A3 3V 12EJE LOS SW Lch S GND TP6 TP5 LO ...

Page 24: ...VDD SDA SCL MUTE OUTLF OUTLR OUTRR OUTRF OUTSW GND 1 2 3 4 5 6 7 8 9 10 11 12 13 14 ACOUTR ACINR ACINL ACOUTL SE3L SE3R SE2L SE2R SE1L SE1R DIFFL DIFFG DIFFR CREF 20 19 18 17 16 15 14 13 12 11 VDD SDA SCL MUTE OUTLF OUTLR OUTRR OUTRF OUTSW GND 1 2 3 4 5 6 7 8 9 10 SE3L SE3R SE2L SE2R SE1L SE1R DIFFL DIFFG DIFFR CREF 1u50 C403 0 R971 FL RL RR FR L R GND RL FL RR FR 470 R403 SCL SDA R L GND L R612 4...

Page 25: ... LOS SW PIO0 CD MSTOP SRAMSTB EPM CD LOE LIM SW PON CD CD LOEJ CD MOTOR VFD CE CD DRIVEMUTE CD CCE NC CD MRST LX DATA M LX CLK NC NC NC REMO NC BYTE CNVSS XCIN XCOUT RESET XOUT VSS XIN VCC1 NMI PANEL DET NC NC ROMCOR DET NC NC PON FL NC PON PANEL NC NC AUD SCL AUD SDA 35 36 37 38 39 40 42 43 44 45 46 47 48 50 33 32 31 34 47K R335 R223 R228 R226 R225 47K 1000P C205 93 94 92 91 90 87 100 100K R229 1...

Page 26: ... 0 01 C102 22K R109 10K R108 3 3K R106 10K R116 0 01 C101 10K R103 47K R104 100K R105 R102 R101 4 7K 4 7K C4 0 1 1 2 3 4 5 6 7 8 9 10 11 12 GND P CON P ANT AUDIO AM VCC1 VCC2 VDD SW5V SEL1 SEL2 ILM 220u16 C5 100u6 3 C7 R2 10K R3 10K R4 10K R5 10K C11 0 1 2 2 C12 C9 0 1 C3 0 1 93 91 90 92 94 0 1 C14 84 83 82 81 80 79 78 77 76 75 74 73 72 71 70 69 68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53 52 5...

Page 27: ...G17 SEG18 4 2 3 5 6 SEG22 SEG20 SEG26 SEG24 SEG25 SEG23 10 8 9 11 12 SEG19 SEG21 SEG14 SEG15 SEG13 14 13 15 17 16 18 SEG10 SEG32 SEG16 SEG31 SEG38 SEG33 SEG35 20 19 21 23 22 24 SEG34 SEG36 SEG37 SEG40 SEG39 26 25 27 29 28 30 36 SEG41 SEG11 SEG5 SEG8 SEG9 32 31 33 34 35 SEG7 COM2 SEG6 COM1 COM3 39 37 38 40 MODEL NATION DESTI A UNIT KDC 138CR KDC 138 RDT 131 KDC 139 K4 J M6 K3 YES 0 21 NAME No 0 11 ...

Page 28: ...LDIN CNT 23 22 R60 C35 1000P N C R58 2 2K N C N C 31 32 N C N C 34 33 35 6800P 62 15K FCS R59 27K 69 SLED C36 R62 R61 15K 13K 4 3 N C SDRCK N C N C 37 36 38 N C N C 40 39 41 44 N C N C 42 43 N C N C NCAS 45 46 12EJE SW TP24 LOS 12EJE LOS SW 22 23 N C 24 R24 100 1 4 3 2 A2 GND A1 A0 C17 0 1 R106 2 2 FDATA SDA 8 5 6 7 SCL SDA WP VCC SCL FCLK 100 CP3 120 119 CP1 TE C21 0 1 R39 10K 0 1 C22 2 2 R110 R3...

Page 29: ... 2 7K R79 R78 820 C63 1000P C64 0 33 1 16 9344MHz X1 X2 R103 2 2 IOP IOP VC 2 GND 12 FCS UP TRK IN TRK OUT FCS DOWN 15 16 14 13 TRK FCS TRK FCS A GND2 LD VR PD C D S GND C D 7 B F 11 10 A E 9 8 F B A E 6 5 4 3 PD VR GND LD VC 1 VCC 78 76 80 81 75 77 78 75 76 80 77 81 1000P C61 5 6K R54 1K R53 C60 0 022 C59 0 1 R77 82K 1M R87 15P C82 15P C81 R86 1K C71 10 C72 0 1 R73 91 4 7K R74 VCC 2 2M R100 R L 1...

Page 30: ...N09 6004 15 N09 6007 15 N09 6051 15 N19 2163 04 N39 2020 48 N09 6108 15 N09 6155 15 φ2x8 M1 6x6 0 M1 7x2 5 M2x2 φ2x5 BLK 1 6 WASHER M2x2 φ2x3 5 φ2x6 858 K K 52 F X32 DM1 14 24 DFPC1 28 25 16 29 19 31 26 13 12 10 30 27 42 11 17 18 23 45 38 DM2 1 850 849 806 834 807 44 39 40 15 22 G 55 51 8 33 809 36 33 Jx2 H 5 37 53 2 37 43 43 56 37 F F 37 43 43 E Cx2 41 32 35 Ax2 DPU1 B ...

Page 31: ...2012 43 N83 3005 48 N86 2610 48 N80 3010 48 N83 3005 48 N83 3020 48 N86 2606 48 242 269 209 266 262 223x2 D Dx2 Hx2 Ex2 C C Cx2 A F H G 772 D D D F J X34 786 732 701 705 771 206 204 237 222 236 221 224 DC1 207 201 X34 A1 X16 ED1 X16 284 X16 283 X16 281 X16 285 X16 282 X16 785 X16 725 B B PA1 241 708 253 238 252 255 257 259 258 256 210 226 31 KDC 138 138CR 139 139S EXPLODED VIEW UNIT ...

Page 32: ...016 48 PAN HEAD TAPTITE SCREW 266 1C N99 1757 05 SCREW SET A 2C N24 3015 48 E TYPE RETAINING RING B 3C N80 2006 48 PAN HEAD TAPTITE SCREW C 2C N80 2012 43 PAN HEAD TAPTITE SCREW D 1D N83 3005 48 PAN HEAD TAPTITE SCREW E 3D N86 2610 48 BINDING HEAD TAPTITE SCREW 269 1C W01 1692 05 CARRYING CASE K4 DME1 1D X92 5860 06 MECHANISM ASSY DXM 6C06W 281 2C B11 1489 04 OPTICAL DIFFUSER 282 2C B11 1495 04 RE...

Page 33: ...RK73GB2A562J CHIP R 5 6K J 1 10W R56 RK73GB2A473J CHIP R 47K J 1 10W R57 RK73GB2A273J CHIP R 27K J 1 10W R58 RK73GB2A222J CHIP R 2 2K J 1 10W R59 RK73GB2A273J CHIP R 27K J 1 10W R60 61 RK73GB2A153J CHIP R 15K J 1 10W R62 RK73GB2A133J CHIP R 13K J 1 10W R63 RK73GB2A183J CHIP R 18K J 1 10W R64 RK73GB2A392J CHIP R 3 9K J 1 10W R65 66 RK73GB2A153J CHIP R 15K J 1 10W R73 RK73GB2A910J CHIP R 91 J 1 10W ...

Page 34: ...73J CHIP R 47K J 1 10W R208 RD14BB2C473J RD 47K J 1 6W R209 210 RD14BB2C471J RD 470 J 1 6W R218 RK73GB2A223J CHIP R 22K J 1 10W R223 RK73GB2A222J CHIP R 2 2K J 1 10W R225 RK73GB2A473J CHIP R 47K J 1 10W K4 R225 226 RK73GB2A473J CHIP R 47K J 1 10W M6M7 R226 RK73GB2A223J CHIP R 22K J 1 10W K4 R226 RK73GB2A473J CHIP R 47K J 1 10W K3 R301 RK73GB2A222J CHIP R 2 2K J 1 10W R302 RD14BB2C101J RD 100 J 1 6...

Page 35: ...18BE471QS2 POSITIVE RESISTOR A1 2D X86 4030 14 FRONT END UNIT 1 2B A10 5328 31 CHASSIS 2 1B A10 5329 11 CHASSIS 5 2B D10 4910 13 ARM ASSY 8 2A D10 4911 23 LEVER ASSY 10 2A D10 4906 33 ARM 11 2A D10 4907 33 ARM 12 3A D10 4908 03 ARM 13 3A D10 4909 03 ARM 14 3B D10 4915 03 ARM 15 2A D10 4916 23 SLIDER 16 3B D10 4914 12 SLIDER 17 2B D10 4588 13 SLIDER 18 2B D10 4917 04 ARM 19 2B D10 4596 24 ARM 22 2A...

Page 36: ...ts No Description Desti nation Ref No A d d N e w Parts No Description Desti nation KDC 138 138CR 139 139S 36 DPU1 2B X93 2130 01 OPTICAL PICKUP ASSY K3 KDC 138 K4 KDC 138CR M6 KDC 139 M7 KDC 139S E Europe K North America M Other Areas MECHANISM ASSY X92 5860 06 DXM 6C06W ...

Page 37: ... 500 200rpm CLV Wow Flutter Below Measurable Limit Frequency response 1dB 20Hz 20kHz Total harmonic distortion 1kHz 0 01 Signal to Noise ratio 1kHz 93dB Dynamic range 93dB Audio section Maximum output power 50W x 4 Full Bandwidth Power at less than 1 THD 22W x 4 Speaker Impedance 4 8Ω Tone action Bass 100Hz 8dB Middle 1kHz 8dB Treble 10kHz 8dB Preout level Load CD 2000mV 10kΩ Preout impedance 600Ω...

Page 38: ...Frequency response 1dB 20Hz 20kHz Total harmonic distortion 1kHz 0 01 Signal to Noise ratio 1kHz 93dB Dynamic range 93dB Audio section Maximum output power 50W x 4 Full Bandwidth Power at less than 1 THD 22W x 4 Speaker Impedance 4 8Ω Tone action Bass 100Hz 8dB Middle 1kHz 8dB Treble 10kHz 8dB Preout level Load CD 2000mV 10kΩ Preout impedance 600Ω Auxiliary input Frequency response 3dB 20Hz 20kHz ...

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Kenwood KDC-138/138CR, Service Manual

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