Kenwood KDC-BT7539U Service Manual

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Instruction manual (40 pages)

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Page 1 CD RECEIVER KDC-BT7539U/BT8041U /BT8141UY/BT838U SERVICE MANUAL © 2008-5 PRINTED IN JA PAN B53-0666-00 ( N ) 429 TDF SPARE-PANEL CD MECHANISM EXTENSIONCORD (30P) : E39-1014-05 MODEL TDF PANEL No. TDF NAME KDC-BT838U Y33-2970-60 TDF-BT89D KDC-BT8041U/BT8141UY Y33-2970-61 TDF-BT8041U KDC-BT7539U Y33-2970-62 TDF-BT7539U...
Page 2 (X34- ) AUX IN SPE ANA USB5V LX BUS AM+B BACK CONNECTOR PRE OUT IC451 (K,M TYPE) FRONT-END MUTE (F/R SW) USB I/F IC501 to USB u-COM PON5V E2PROM POWER FM/AM E-VOL WININ OFFSET SP OUT MUTE 0,1,2 (FL/FR/RL/RR) MD(BT) MUTE A MUTE MUTE C...
Page 3: Block Diagram
KDC-BT7539U/BT8041U /BT8141UY/BT838U BLOCK DIAGRAM MOTHER CD PLAYER UNIT (X32-6130-00) BOARD (X34- ) DPU1 SRAMSTB SRAMSTB SIGNAL A,B,C,E,F BUCK BUCK PIO0 PIO0 MRST MRST RF AMP BSIF ST REQ BSIF ST REQ VREF SERVO BSIF GATE BSIF GATE PROCESSOR BSIF DATA...
Page 4: Components Description
KDC-BT7539U/BT8041U /BT8141UY/BT838U COMPONENTS DESCRIPTION ● SWITCH UNIT (X16-638x-xx) Ref. No. Application / Function Operation / Condition / Compatibility Panel μ-COM Remote Control IC Remote control receiver Triangle Red LED SW Triangle LED lights when Q1’s base level goes Hi. Blue LED SW (Vol left) Blue LED brightness control (PWM).
Page 5 KDC-BT7539U/BT8041U /BT8141UY/BT838U COMPONENTS DESCRIPTION Ref. No. Application / Function Operation / Condition / Compatibility Q121 B.U Detected SW When Q121’base gose Hi, B.U voltage is detected. Q122 Surge Detect SW When Q122’base goes Hi, Surge voltage is detected. Q123 ACC Detect SW When Q123’base gose Hi, Acc voltage is detected.
Page 6: Microcomputer's Terminal Description
KDC-BT7539U/BT8041U /BT8141UY/BT838U MICROCOMPUTER’S TERMINAL DESCRIPTION ● SYSTEM μ-COM: 30626FHP3A7GP (X34-597: IC601) Truth Pin No. Pin Name Application Processing Operation Description value table WIRED_REMO Remote controller input Pulse width detection RDS_QUAL RDS decoder QUAL input terminal Not used (Models without RDS) Output is ﬁ...
Page 7 KDC-BT7539U/BT8041U /BT8141UY/BT838U MICROCOMPUTER’S TERMINAL DESCRIPTION Truth Pin No. Pin Name Application Processing Operation Description value table Data from panel to system μ-com PAN_PAN_DATA UART MAX 500k (Panel → System μ-com) Communication request from system PAN_SYS_REQ μ-com to panel (System μ-com → Panel)
Page 8 KDC-BT7539U/BT8041U /BT8141UY/BT838U MICROCOMPUTER’S TERMINAL DESCRIPTION Truth Pin No. Pin Name Application Processing Operation Description value table OEM_DISP_CLK I/O External display CLK External display Not used (Models without BT/Models Output is ﬁ xed to L without OEM_DISP) OEM_DISP_CE I/O External display control request...
Page 9 KDC-BT7539U/BT8041U /BT8141UY/BT838U MICROCOMPUTER’S TERMINAL DESCRIPTION Truth Pin No. Pin Name Application Processing Operation Description value table LX_REQ_M Communication request to slave unit Not used (Models not-supporting LX-BUS) Output is ﬁ xed to L LX_MUTE Mute request from slave unit H: Mute ON, L: Mute OFF Not used (Models not-supporting LX-BUS) Output is ﬁ...
Page 10 KDC-BT7539U/BT8041U /BT8141UY/BT838U MICROCOMPUTER’S TERMINAL DESCRIPTION ● SUB μ-COM: 92CD28AFG6VV1 (X34-597: IC700) Pin No. Pin Name Application Processing Operation Description MRST Reset L: RESET, H: Normal STOP signal from system μ-com (Momentary power down detec- MSTOP H: Normal, L: SOC stop...
Page 11 KDC-BT7539U/BT8041U /BT8141UY/BT838U MICROCOMPUTER’S TERMINAL DESCRIPTION Pin No. Pin Name Application Processing Operation Description IPOD_RST RESET BOOT For writing data in Flash 69,70 Not used Output is ﬁ xed to L BSIF_LRCK BSIF Operation mode: Fixed to “1”. High frequency oscillator connection terminal. Main-clock 9.00MHz...
Page 12 KDC-BT7539U/BT8041U /BT8141UY/BT838U MICROCOMPUTER’S TERMINAL DESCRIPTION ● PANEL μ-COM: 30624MWPB81GP/30626MJPA23GP (X16-638: IC1) Truth Pin No. Pin Name Application Processing Operation Description value table REMO Remote control signal input Pulse width detection Not used Output L ﬁ xed FL SI1 FL display serial data output...
Page 13 KDC-BT7539U/BT8041U /BT8141UY/BT838U MICROCOMPUTER’S TERMINAL DESCRIPTION Truth Pin No. Pin Name Application Processing Operation Description value table LED CONT TRI I/O Triangle LED luminescence SW H: LED ON, Hi-Z: LED OFF 49,50 Not used Output L ﬁ xed I/O Data transmission and reception for ROM correction...
Page 14: Test Mode
KDC-BT7539U/BT8041U /BT8141UY/BT838U TEST MODE ● How to enter the test mode ● TUNER Setup adjustment mode speciﬁ cation Press and hold the [FNC] and [EJECT] keys and reset. 1. Use [FM] / [AM] key to select TUNER band. (While “----” is being displayed, power can be ON for 30 2.
Page 15 KDC-BT7539U/BT8041U /BT8141UY/BT838U TEST MODE ● K3I forced switching b. Press and hold [ ] key for 2 seconds to make the cur- rent receive level to be the seek stop level in order to Every time when [6] key is pressed in tuner FM band, start writing the adjustment values in E2PROM.
Page 16 Pairing information (Flash Memory) cleared Normal) Telephone number preset (E2PROM) cleared • Volume Offset (other than the internal AUX) is adjusted Friendly name “KENWOOD BT CD/R-2P2” written by the VOL knob and [ ] / [ ] keys in 2 steps: -8↔0.
Page 17 KDC-BT7539U/BT8041U /BT8141UY/BT838U TEST MODE 3. In the Phone Selection mode in the Test mode, 5 coun- Operation Display Description terpart units are listed. Rotate the control knob on the Front-end→Mother (In the above “ROM_Reading…” right or use the [FM] / [AM] key to select the desired...
Page 18 KDC-BT7539U/BT8041U /BT8141UY/BT838U TEST MODE Key pressed brieﬂ y: AUDIO data initialization Key pressed brieﬂ y: CD operation time is displayed. (Display) AUD_INIT [AM] (Display) CDTim_0H××_ (00~50 is displayed for “xx”. (Remote When less than 1 hour, Key pressed brieﬂ y: Forced Power OFF data displayed.
Page 19 KDC-BT7539U/BT8041U /BT8141UY/BT838U TEST MODE ● Other <Mother for E destination + Panel for M destination> • When Power ON, do not display “CODE_NG”, “CODE_ OFF”, and “CODE_ON”. _ M o t h e r : E _ w i t h _ B T •...
Page 20 KDC-BT7539U/BT8041U /BT8141UY/BT838U TEST MODE ● Clearing DC offset error detection information [Service Information] • Displays power ON time is displayed. (Clearing E2PROM data within the front end) • Displays CD operation time. 1. Press and hold [ATT] and [AUD] keys and reset-start to •...
Page 21: Dc Offset Error
KDC-BT7539U/BT8041U /BT8141UY/BT838U TEST MODE 2. Press the [FNC] key brieﬂ y to make the multi-function 6. Release the test mode. (Refer to “How to clear the test display and press the [ ] key briefly to enter the mode”.) MENU.
Page 22 KDC-BT7539U/BT8041U /BT8141UY/BT838U DC OFFSET ERROR ● Cancel Condition ∗ The purpose is to shut down audio output. Basically, the logic sets the audio output system signal line when • Press the Reset terminal on the main body. Or set Back- in Standby source.
Page 23: Switch Unit
KDC-BT7539U/BT8041U /BT8141UY/BT838U PC BOARD PC BOARD (COMPONENT SIDE VIEW) (FOIL SIDE VIEW) SWITCH UNIT SWITCH UNIT X16-638x-xx (J76-0503-12) X16-638x-xx (J76-0503-12) TP48 CP21 CP20 TP71 CP12 CP17 CP13 CP15 CP16 ILL+B TP29 TP28 TP27 X16-638x-xx X16-638x-xx TP11 TP26 TP12 TP13 Ref. No.
Page 24: Electric Unit
KDC-BT7539U/BT8041U /BT8141UY/BT838U PC BOARD (COMPONENT SIDE VIEW) ELECTRIC UNIT X34 B/2 X34-597x-xx A/2 (J76-0516-12) P682 J431 IC501 J401 C516 D506 R442 J421 L964 C443 C506 J682 D432 D423 D121 C456 R121 Q121 R122 Q122 R148 R156 C337 R143 D123 C467...
Page 25 KDC-BT7539U/BT8041U /BT8141UY/BT838U X34-597x-xx Ref. No. Address IC11 IC21 IC61 IC71 TH500 IC211 R506 IC301 R510 IC331 IC451 IC501 IC601 IC11 IC602 IC604 IC605 CN201 CN161 IC607 D121 IC608 IC700 IC750 D123 D201 C201 D202 C212 D145 IC964 IC211 D142 IC965...
Page 26 KDC-BT7539U/BT8041U /BT8141UY/BT838U PC BOARD (FOIL SIDE VIEW) ELECTRIC UNIT X34-597x-xx A/2 (J76-0516-12) TP17 TP16 C510 C509 TP18 TP13 TP500 TP15 TP10 TP12 TP14 TP19 C515 R135 C152 Q123 TP20 R153 R129 TP21 TP203 C457 C458 TP501 C470 C459 C460 C471...
Page 27 KDC-BT7539U/BT8041U /BT8141UY/BT838U X34 B/2 X34-597x-xx Ref. No. Address IC751 TP407 TP423 TP402 TP404 TP421 C411 C403 C407 C412 C404 C408 R423 R424 Q123 R416 R404 R415 R403 R409 R410 Q143 Q144 Q146 Q151 Q321 Q322 Q401 Q402 TP344 TP501 Q403...
Page 28 KDC-BT7539U/BT8041U /BT8141UY/BT838U PC BOARD (COMPONENT SIDE VIEW) CD PLAYER UNIT X32-6130-00 (J76-0495-12) R261 R216 C104 R281 X32-6130-00 Ref. No. Address Refer to the schematic diagram for the values of resistors and capacitors.
Page 29 KDC-BT7539U/BT8041U /BT8141UY/BT838U PC BOARD (FOIL SIDE VIEW) SGND S7.5V CD PLAYER UNIT LO/EJ DRVMUTE MOTOR X32-6130-00 (J76-0495-12) SPDL+ R288 LOE-SW 8-SW SRAM MRST PIO0 AMUTE SLD- SLD+ LOAD A.GND EJECT SPDL- BUCK R240 R289 BU1.5V C101 R241 R246 R231 D1.5V...
Page 30 KDC-BT7539U/BT8041U /BT8141UY/BT838U PRE OUT AUX IN REAR ∗ J401 ∗ J421 J431 J401 FRONT (X34-597x-xx) (A/2) TP423 FRONT R426 TP420 REAR & WOOFER C424 0.01 TP421 5L I/F D421 D422 D423 D433 D439 ∗ REAR & SUB FRONT REAR D431...
Page 31 KDC-BT7539U/BT8041U /BT8141UY/BT838U ∗ BU5V-2 TP500 C521 R507 4.3K IC602 C614 IC501 0.01 ∗ R660 0-4.4V C505 RESET IC R601 R505 2.2K WIRED POWER REMO R602 0-5.0V TP603 RDS QUAL/NC R604 47K S SYS DATA/CD SI R637 47K TP501 S SOC DATA/CD SO...
Page 32 KDC-BT7539U/BT8041U /BT8141UY/BT838U TP615 TP123 L601 R121 Q121 4.7uH D121 R122 BU5V-2 BU5V Q121 TP613 TP122 Q122 5.0V BU DET SW R123 D123 PON5V PON5V SURGE USED DET SW Q122 Q123 TP121 R126 ACC DET SW R128 IC603 IC608 100K D124...
Page 33 KDC-BT7539U/BT8041U /BT8141UY/BT838U to DC CORD FUSE TP16 SPISOMI SPISIMO SGND NC31 SPINSS 3.3V iPod R758 100K CLOCKOUT ROSC AUTHENTICATION NC33 R757 47K COPROCESSOR MODE2 R741 NC34 3300u16 3.3V R756 100 3.3K NC35 I2CSDA IC750 R128 NC36 NC14 3.3V R755 47K...
Page 34 KDC-BT7539U/BT8041U /BT8141UY/BT838U R978 CN962 CAUTION : For continued TP974 C968 safety, re place safe ty critical TP973 R977 components only with manu- IC964 facturer’s rec om mend ed parts C970 R970 R900 4.0V R901 R969 C969 4.0V 4.0V (refer to parts list).
Page 35 KDC-BT7539U/BT8041U /BT8141UY/BT838U (X16-638x-xx) NOT USED CP18 0.01 5.0V DGND CP11 ROM COR LED CONT UNDER/RED FL LAT 5.0V or 0V FL BK CP13 3.3K LED CONT RTY2/BLUE ROTRY2 CW CP19 ROTRY2 CCW 100P 5.0V or 0V CP14 3.3K ROTRY1 CW ROTRY1 CCW 5.0V...
Page 36 KDC-BT7539U/BT8041U /BT8141UY/BT838U 131 x 23 DOT FILAMENT 5.5V VOLTAGE(-) TP30 5.0V 8.8V TP91 CP21 100P TP92 ROM CORRECTION PAN5V-1 FLGND FL+B PAN5V ∗ : PIC95603 DTC114YUA DTA114EUA : NOT USED DTC143TUA DTA124EUA Q1,3-6 : DTC143ZUA TRIANGLE RED 2SA1576A DTC124EUA : 2SB1188(Q,R)
Page 37 KDC-BT7539U/BT8041U /BT8141UY/BT838U CD PLAYER UNIT (X32-6130-00) 4CH BTL DRIVER 1.5V POWVCC1 TP203 POWGND1 TP31 SLIN R207 TP204 SPDL- VO1- LDIN TP32 BIASSW TP33 SPDL+ VO1+ C20 33P TP34 TP28 EJECT R20 180K VO2- TP55 TP26 R27 9.1K LOAD VO2+ TP54...
Page 38 KDC-BT7539U/BT8041U /BT8141UY/BT838U 3.3V R233 R287 16.934MHz TP44 FCS+ 0.022 TP47 TRK- TP46 1.9V TRK+ 2200P TP45 DPU1 FCS- (X92- ) 0.033 0.033 TP84 TP71 2.1V TP40 OPTICAL TP41 PICKUP 87.7kHz TP72 1.8V 2.5V 16.934MHz 1.5V 2.1V DVSS3 1 1.7V TP42 88.8kHz...
Page 39 KDC-BT7539U/BT8041U /BT8141UY/BT838U EXPLODED VIEW (CD MECHANISM) DPU1 DFPC1 (X32) : N09-4460-15 φ M1.6x6.0 : N09-6317-05 M1.7x2.5 : N09-6004-15 M2x2 : N09-6007-15 2x5(BLK) : N09-6051-15 φ 1.6 WASHER : N19-2163-04 M2x2 : N39-2020-48 2x3.5 : N09-6108-15 φ : N09-6155-15 φ Parts with the exploded numbers larger than 700 are not supplied.
Page 40: Exploded View (Unit)
KDC-BT7539U/BT8041U /BT8141UY/BT838U EXPLODED VIEW (UNIT) SIZE AA BATTERY (NOT SUPPLIED) DME1 : N24-3015-48 : N84-2005-48 : N80-2008-43 : N83-3005-48 : N09-6358-05 : N83-3005-48 (X34) : N83-3016-48 W321 : N86-2606-48 (X34) : N80-3008-48 WH151 : N83-3010-43 (X34) (X34) A322 (X34) (X16-)
Page 41: Parts List
RK73GB2A104J CHIP R 100K J 1/10W N83-3005-48 PAN HEAD TAPTITE SCREW R79,80 RK73GB2A473J CHIP R J 1/10W E1 : KDC-BT8041U E2 : KDC-BT8141UY (Europe) Indicates safety critical com po nents. K : KDC-BT838U (North America) M1 : KDC-BT7539U (Other Areas)
Page 42 RK73GB2A302J CHIP R 3.0K J 1/10W R289 RK73GB2A103J CHIP R J 1/10W C102 CK73GB1A474K CHIP C 0.47UF E1 : KDC-BT8041U E2 : KDC-BT8141UY (Europe) Indicates safety critical com po nents. K : KDC-BT838U (North America) M1 : KDC-BT7539U (Other Areas)
Page 43: Electric Unit (X34-597X-Xx)
0.010UF K C904,905 CK73GB1H102K CHIP C 1000PF C336 CD04AS1V100M ELECTRO 10UF 35WV C906,907 CC73GCH1H681J CHIP C 680PF E1 : KDC-BT8041U E2 : KDC-BT8141UY (Europe) Indicates safety critical com po nents. K : KDC-BT838U (North America) M1 : KDC-BT7539U (Other Areas)
Page 44 J 1/4W R307 RK73GB2A104J CHIP R 100K J 1/10W E1E2 R308 RK73GB2A222J CHIP R 2.2K J 1/10W E1E2 E1 : KDC-BT8041U E2 : KDC-BT8141UY (Europe) Indicates safety critical com po nents. K : KDC-BT838U (North America) M1 : KDC-BT7539U (Other Areas)
Page 45 CHIP R J 1/10W R617 RK73GB2A102J CHIP R 1.0K J 1/10W R700 RK73GB2A102J CHIP R 1.0K J 1/10W E1 : KDC-BT8041U E2 : KDC-BT8141UY (Europe) Indicates safety critical com po nents. K : KDC-BT838U (North America) M1 : KDC-BT7539U (Other Areas)
Page 46 J 1/10W IC501 E-TDA7850A ANALOGUE IC R961 RK73GB2A473J CHIP R J 1/10W IC601 ✽ 30626FHP3A7GP MICROCONTROLLER IC E1 : KDC-BT8041U E2 : KDC-BT8141UY (Europe) Indicates safety critical com po nents. K : KDC-BT838U (North America) M1 : KDC-BT7539U (Other Areas)
Page 47: Cd Mechanism Assy (X92-6130-00) (Dxm-6E20W)
TAPTITE SCREW Q703 2SA1577 TRANSISTOR N09-6004-15 MACHINE SCREW (M1.7X2.5) Q704,705 DTC114YUA DIGITAL TRANSISTOR N09-6007-15 MACHINE SCREW (PAN M2X2) E1 : KDC-BT8041U E2 : KDC-BT8141UY (Europe) Indicates safety critical com po nents. K : KDC-BT838U (North America) M1 : KDC-BT7539U (Other Areas)
Page 48: Optical Pickup Assy
SEMS (TAPTITE SCREW) (PT2X6) T42-1066-14 DC MOTOR (SPINDLE) T42-1067-14 DC MOTOR (LOADING/SLED) DPU1 X93-2130-01 OPTICAL PICKUP ASSY E1 : KDC-BT8041U E2 : KDC-BT8141UY (Europe) Indicates safety critical com po nents. K : KDC-BT838U (North America) M1 : KDC-BT7539U (Other Areas)
Page 49 KDC-BT7539U/BT8041U /BT8141UY/BT838U PARTS LIST CAPACITORS 2 2 0 • Capacitor value CC45 Color* 010 = 1pF 0 = 22pF 1 = Type ... ceramic, electrolytic, etc. 4 = Voltage rating 100 = 10pF 2 = Shape ... round, square, etc.
Page 50 KDC-BT7539U/BT8041U /BT8141UY/BT838U SPECIFICATIONS (K TYPE) FM tuner section USB Interface Frequency range (200 kHz space) ..87.9 MHz – 107.9 MHz USB Standard .........USB1.1/ 2.0 (Full speed) Usable sensitivity (S/N = 30dB) ..... 9.3dBf (0.8 μV/75 Ω) Maximum Supply current .......... 500 mA Quieting Sensitivity (S/N = 50dB) ..
Page 51 KDC-BT7539U/BT8041U /BT8141UY/BT838U SPECIFICATIONS (M TYPE) FM tuner section USB Interface Frequency range USB Standard .........USB1.1/ 2.0 (Full speed) 200 kHz space ......87.9 MHz – 107.9 MHz Maximum Supply current .......... 500 mA 50 kHz space ........ 87.5 MHz – 108.0 MHz File System .............FAT16/ 32...
Page 52 Spindle speed ........500 – 200 rpm (CLV) Wow & Flutter ........Below Measurable Limit KENWOOD follows a policy of continuous advancements Frequency response (±1 dB) ......10 Hz – 20 kHz in development. For this reason speciﬁ cations may be Total harmonic distortion (1 kHz) ......

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Kenwood KDC-BT7539U Service Manual

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