Kenwood KDC-HD942U Service Manual
  1. Manuals
  2. Brands
  3. Kenwood Manuals
  4. Car Receiver
  5. KDC-HD942U
  6. Service manual

Kenwood KDC-HD942U Service Manual

Hide thumbs Also See for KDC-HD942U:
Table of Contents

Advertisement

Quick Links

Download this manual
CD RECEIVER
KDC-HD942U
SERVICE MANUAL
Mounting hardware assy
(J22-0789-03)
Screw set
Screw set
(N99-1757-15)
(N99-1730-35)
Panel assy
(A64-4777-01)
Escutcheon
Carrying case
(B07-3235-03)
(W01-1710-05)
Compact disc
(W01-1723-15)
This product complies with the
© 2009-3 PRINTED IN JA PAN
B53-0719-00 ( N ) 166
TDF SPARE-PANEL
MAIN UNIT NAME
TDF PARTS No.
KDC-HD942U
Y33-3110-11
Remote controller assy (RC-547)
(A70-2085-15)
Lever
DC cord
(D10-7049-04) x2
(E30-6428-05)
This product uses Lead Free solder.
RoHS
TDF NAME
TDF-HD99D
Battery
(Not supplied)
directive for the European market.

Advertisement

Table of Contents
loading

Related Manuals for Kenwood KDC-HD942U

Summary of Contents for Kenwood KDC-HD942U

  • Page 1 CD RECEIVER KDC-HD942U SERVICE MANUAL © 2009-3 PRINTED IN JA PAN B53-0719-00 ( N ) 166 TDF SPARE-PANEL MAIN UNIT NAME TDF PARTS No. TDF NAME KDC-HD942U Y33-3110-11 TDF-HD99D Panel assy (A64-4777-01) Escutcheon Carrying case Remote controller assy (RC-547) Mounting hardware assy...

  • Page 2: Block Diagram

    KDC-HD942U BLOCK DIAGRAM J421 (X34- ) AUX IN CN201 IC371 BU3.3V Q350-353 FRONT-END USB5V IC852 CONNECTOR 4V PRE+B Q401-406 P.ON E2PROM L-DICE RF5V J401 J431 IC451 PRE OUT iTunes TAGGING USB I/F MUTE 256k-BIT IC10 (F/R/SW) TUN1.8V to USB u-COM...

  • Page 3: Components Description

    KDC-HD942U COMPONENTS DESCRIPTION ● ELECTRIC UNIT (X34-6320-10) Ref. No. Application / Function Operation / Condition / Compatibility IC10 A5V REG Power supply for A5V to DSP. IC11 AUD8V REF Power Supply Outputs 1.27V. IC61 D5V & P.ON5V SW REG Power supply for D5V to USB/PANEL and P.ON5V.
  • Page 4 KDC-HD942U COMPONENTS DESCRIPTION Ref. No. Application / Function Operation / Condition / Compatibility 3.2V REG Power supply for 3.2V. LED Driver Being controlled by IC1. Rotary (R) LED Driver Being controlled by IC1. Rotary (L) LED Driver Being controlled by IC1.

  • Page 5: Microcomputer's Terminal Description

    KDC-HD942U MICROCOMPUTER’S TERMINAL DESCRIPTION ● System μ-COM: IC602 on X34- (ELECTRIC UNIT) Truth Value Pin No. Pin Name Application Processing / Operation / Description Table WIRED REMO Remote control signal input Pulse width detection Not used Output L fi xed CD SYS DATA Data from system μ-com to Bolero...
  • Page 6 KDC-HD942U MICROCOMPUTER’S TERMINAL DESCRIPTION Truth Value Pin No. Pin Name Application Processing / Operation / Description Table CD LOE LIM SW CD detection (chucking detection) H: Loading completed, L: No disc Panel operation control PAN SC CON H: Normal, L: Panel operation stopped (Becomes CE when system μ-com is rewritten)
  • Page 7 KDC-HD942U MICROCOMPUTER’S TERMINAL DESCRIPTION Truth Value Pin No. Pin Name Application Processing / Operation / Description Table PWIC STBY Power IC standby POWER ON: H, POWER OFF: L LX REQ M Communication request to slave unit LX MUTE Mute request from slave unit...
  • Page 8 Power control (Stop) input Rising edge: ON, L: OFF (Same timing as LX-BUS) PROTOCOL SEL Communication protocol selection L: KAB (Kenwood Advanced Bus), H: LX-BUS L: Head unit (Over I2C) PHY SEL Physical layer selection H: Black box (Protocol compliant)
  • Page 9 KDC-HD942U MICROCOMPUTER’S TERMINAL DESCRIPTION ● Panel μ-COM: IC1 on X16- (SWITCH UNIT) Truth Value Pin No. Pin Name Application Processing / Operation / Description Table REMO Remote control signal input Pulse width detection Not used Output L fi xed BYTE...
  • Page 10 KDC-HD942U MICROCOMPUTER’S TERMINAL DESCRIPTION Truth Value Pin No. Pin Name Application Processing / Operation / Description Table Data transmission and reception for ROM cor- ROM COR SDA Always output except in reading rection ROM COR SCL I/O Clock for ROM correction...

  • Page 11: Test Mode

    KDC-HD942U TEST MODE AUTO VOL/AUD SEARCH ● How to enter the test mode ● HD source test mode Press and hold the [FNC] and [AUD] keys and reset. (While (∗1) Display [1] key, [2] key, and [3] key on the multi-function “–...
  • Page 12 KDC-HD942U TEST MODE ● Specifi cation of the test mode for tuner source [Seek Stop Level Adjustment (Auto)] (Display) A T N _ 4. 3 2 V : When at Normal (Local OFF) The frequency of 98.3MHz is received when the [4] key is (Display) A T L _ 3.
  • Page 13 KDC-HD942U TEST MODE ● CD source test mode specifi cation ● AUDIO adjust mode · Jumps to the following tracks by pressing the [ ] key. · Press the [AUD] key briefl y to enter the audio adjustment No.9→No.15→No.10→No.11→No.12→No.13→No.22→ mode.
  • Page 14 KDC-HD942U TEST MODE ● Backup current measurement Table 1 - Version & Service information display mode ([1]~[6] keys: Remote controller) If reset while in ACC OFF (Back Up ON) condition, MUTE terminal goes off 2 seconds later, rather than 15 seconds.
  • Page 15 KDC-HD942U TEST MODE Table 2 - CD information display mode · DEMO mode shall not be operated while in the test mode, Backup/Installer Memory & CD Mechanism Infor- I2C communication condition and CD mechanism error log display mation & Service Information & DC offset Error Detection...
  • Page 16 KDC-HD942U TEST MODE ● Clearing backup / installer memory & CD E destination mother + M3 destination panel (M3 destina- tion: KDC-X7013UL/XBT8013UL) mechanism information & service information & DC offset error detection information (Clear- _ M o t h e r : E...
  • Page 17 KDC-HD942U TEST MODE When fi nished but unsuccessful 1: Mother E2PROM initial- 3. While the DC offset error detection condition is being ization NG displayed as above, press and hold [1] key for 2 seconds to clear the information about the improper connection,...

  • Page 18: Installer Memory Specifications

    KDC-HD942U INSTALLER MEMORY SPECIFICATIONS At specialists (or specialty stores), when the installer sends Also, the setting values of all Preset Positions will be the vehicle back to the user, they may make the store-rec- memorized for the setting value of Manual Position. (6 ommended audio confi...

  • Page 19: Backup Memory Specifications

    KDC-HD942U BACKUP MEMORY SPECIFICATIONS Settings by the user other than the installer memory items · When the backup power supply was taken out at times are saved into the E2PROM, and when the backup power of battery change or when the reset button was pressed,...
  • Page 20 KDC-HD942U PC BOARD PC BOARD (COMPONENT SIDE VIEW) (FOIL SIDE VIEW) DISPLAY UNIT DISPLAY UNIT EJECT X15-1220-10 (J76-0576-02) X15-1220-10 (J76-0576-02) RESET PROCESSOR UNIT PROCESSOR UNIT X17-2050-10 (J76-0612-02) X17-2050-10 (J76-0612-02) CN101 RESET C198 Q101 C126 R153 C125 C107 IC151 C106 C134...
  • Page 21 KDC-HD942U PC BOARD PC BOARD (COMPONENT SIDE VIEW) (FOIL SIDE VIEW) SWITCH UNIT (BLUE ILLUMI.) SWITCH UNIT (BLUE ILLUMI.) X16-6520-10 (J76-0577-02) X16-6520-10 (J76-0577-02) VOUT C122 R137 CP22 CP17 R139 ROM DET CP18 CP15 R140 CP21 ILL+B LCD+B SCC N PAN RST...

  • Page 22: Pc Board (Component Side View)

    KDC-HD942U PC BOARD (COMPONENT SIDE VIEW) ELECTRIC UNIT X34-6320-10 (J76-0575-02) J431 IC500 J401 C516 13 11 12 8 D506 C443 R442 J421 D442 R443 C422 C421 C444 R354 D432 C508 C353 W321 D421 D422 R356 Q350 Q351 C476 C756 R455...
  • Page 23 KDC-HD942U X34-6320-10 Ref. No. Address IC10 IC11 IC61 IC71 D502 R510 IC74 IC11 IC75 IC101 IC102 IC211 IC371 IC451 CN201 IC500 IC600 IC601 Q141 IC602 D201 C253 D202 C201 IC604 R156 D252 IC851 D211 L201 C213 IC852 C252 R148 R143...
  • Page 24 KDC-HD942U PC BOARD (FOIL SIDE VIEW) ELECTRIC UNIT X34-6320-10 (J76-0575-02) TP15 C525 C524 C509 TP14 C510 TP18 TP16 TP502 TP17 TP500 TP13 TP511 TP11 TP19 R516 R511 R153 C153 TP20 TP501 R125 R126 C121 C123 TP122 R123 TP505 TP123 R129...
  • Page 25 KDC-HD942U X34-6320-10 Ref. No. Address TP402 C413 C408 C412 C404 C411 C403 C407 TP420 TP423 TP421 TP422 R415 R416 R410 R403 R404 R409 R402 R408 R407 C410 Q121 TP506 Q122 Q123 D751 TP752 TP344 Q143 TP751 R907 W752 Q144 Q151...
  • Page 26 KDC-HD942U PC BOARD (COMPONENT SIDE VIEW) X32 B/2 12EJE ORG LOS GRE GND BLU R105 CD PLAYER UNIT R102 X32-6260-00 A/2 (J76-0572-02) AGND CD RST IOP+ BUCK A3.3V R119 R177 CP11 R101 R121 12EJE SW R171 R118 LOS SW R117...
  • Page 27 KDC-HD942U PC BOARD (FOIL SIDE VIEW) X32 B/2 CD PLAYER UNIT X32-6260-00 A/2 (J76-0572-02) R127 R120 R128 CP15 R166 CP12 C102 R167 R68 R69 R132 R131 X32-6260-00 Ref. No. Address Refer to the schematic diagram for the values of resistors and capacitors.
  • Page 28 KDC-HD942U REAR ANT. INTERNAL CIRCUIT of X17-2050-10 PRE OUT FRONT ELECTRIC UNIT (X34-6320-10) W321 J401 TP344 HD FRONT-END (X17-2050-10) TU GND TP801 GND7 GND1 L801 GND6 TP802 GND5 VDD3.3V FRONT-END L802 TP803 VDD1.2V TP751 TP804 RFGND1 GND2 TP752 R807 FRONT...
  • Page 29 KDC-HD942U 5L I/F J431 AUX IN J421 R426 R442 D421 D422 REAR D431 D423 D439 5.0V D432 R416 D434 IC601 D433 E2PROM Q406 5.0V Q408 AGND Q408 PRE-OUT MUTE DRIVER BU5V 14.4V TP500 C516 C521 R507 4.3K TP502 R505 TP21...
  • Page 30 KDC-HD942U uCOM5V uCOM5V C608 0.01 C615 IC600 VOUT 5.0V 5.0V RESET IC R654 R616 TP617 PWIC STBY 2.2K WIRED REMO R604 47K TP607 PWIC MUTE R657 CD SYS DATA R606 47K R655 100 100K CP613 LX REQ S 4.7K CD CD DATA...
  • Page 31 2.9V IC102 Q145,146 POWER ANT SW TP60 22uH Q151 3.3V LINEMUTE DIMMER TP62 HD1.8V SMALL-LAMP DET SW HD1.2V KDC-HD942U (1/3) IC10 : XC6201P502PR Q143 : DTA114EUA Q144,146 : DTC114YUA IC11 : M5237ML-CF0J IC61,71 : LT3685EMSE Q351 : 2SC5053 IC74 : S-1132B33U5T1G...
  • Page 32 KDC-HD942U SWITCH UNIT (X16-65xx-xx) PAN5V ILL+B ∗ ∗ R97 3.3K 3.3K R98 3.3K LCD BACK LIGHT LED DRIVER BLUE LED DRIVER R95 3.3K R99 3.3K LED DRIVER BACK BACK LCD BACK LIGHT LIGHT LIGHT RED LED DRIVER DRIVER GREEN LCD BACK LIGHT...
  • Page 33 IC3 : PIC95603 : B30-1780-05 GND LINE IC4 : NOT USED D3-10 : B30-1781-05 B LINE IC7 : S-1112B32MCG D21-24 : B30-1798-05 D40,92 : LVS10C270S030 Q1-9,27-29,41 D93,94 : B30-3211-05 : KRC406-P D107,110 : B30-1784-05 PAN5V-1 KDC-HD942U (2/3) B38-1213-05 X16-6520-10 (2/2), X15-1220-10 (1/1)
  • Page 34 KDC-HD942U PROCESSOR UNIT A2 (X17-2050-10) VDD3.3V OSC1.2V VDD1.2V C116 C117 X101 RESET INVERTER R102 TP113 C101 C102 470P TP105 CLK OUT MEM CAS Q101 RESET N DVDD S MEM RAS TP111 MEM CS MEM B R104 47 I2C1 SCL MEM B...
  • Page 35 HOLD IBOC Q R150 I2S I BCK C151 IBOC I I2S I WS IBOC WS X34-632- I2S2 O SD/ IBOC BCK SPDIF O FLASH ROM RESET EVM IBOC SDA IBOC SCK OSC1.2V CN102 VDD1.2V VDD3.3V OSC1.2V KDC-HD942U (3/3) X17-2050-10 (2/2)
  • Page 36 KDC-HD942U CD PLAYER UNIT (X32-6260-00) (A/2) MECHA. (X92- ) SLED OUT /LOAD 4ch BTL DRIVER TP123 TP128 1.7V ZDET 7.5V POWVCC1 R132 100 TP124 LOADING & POWGND1 SLED IN SLED TP127 /EJECT SLIN MOTOR VO1- R131 200K LDIN SPDL+ VO1+...
  • Page 37 KDC-HD942U ZDET ZDET D1.5V DRVMUTE B3.3V-2 B3.3V TP95 B3.3V CD REQ TP93 TP94 OUTPUT ZDET TP68 B3.3V B3.3V ZDET 3.3V CONTROL SIGNAL INVERTER AGND DVSS3R 1.7V TP92 R112 4.7 R28 1K 3.3V DVDD3R DSP RST 3.3V R113 4.7 R27 100 DVDD3L 1.7V...
  • Page 38 KDC-HD942U TP31 FCS- TP32 TRK- A3.3V TP33 TRK+ 2SB1565 TP34 FCS+ TP59 RFRP TP37 1.5V DPU1 TP38 TP60 (X92- ) DTC114YUA TP40 PD R104 DTC143TUA OPTICAL 2.2M TP41 C+D 2SA1576A R103 PICKUP 2.3V TP42 F 0.2V TP43 A AVSS3 1.7V TP44 B 2.0V...
  • Page 39 KDC-HD942U EXPLODED VIEW (CD MECHANISM) : N09-6108-15 : N09-6426-15+ : N09-6735-05 : N09-6737-15 : N09-6738-15 : N19-2335-14 : N35-2003-48 : N39-1720-48 (X32) DPU1 (X32) Parts with the exploded numbers larger than 700 are not supplied.

  • Page 40: Exploded View (Unit)

    KDC-HD942U EXPLODED VIEW (UNIT) SIZE AAA BATTERY (Not supplied) DME1 : N09-6758-05 : N80-2006-48 : N80-2008-43 : N84-2005-43 : N84-2005-48 : N84-2606-43 : N86-2604-43 : N86-2606-48 : N80-3008-48 : N83-3005-48 (X15-) : N83-3008-48 : N83-3016-48 : N86-2604-43 (X34-) WH151 (X34-)

  • Page 41: Parts List

    KDC-HD942U PARTS LIST ✽ New parts Parts without Parts No. are not supplied. Les articles non mentionnes dans le Parts No. ne sont pas fournis. Teile ohne Parts No. werden nicht geliefert. Desti- Desti- Ref. No. Parts No. Description Ref. No.
  • Page 42 KDC-HD942U PARTS LIST SWITCH UNIT (X16-6520-10) Desti- Desti- Ref. No. Parts No. Description Ref. No. Parts No. Description nation nation R79 ,80 RK73GB2A473J CHIP R J 1/10W CK73GB1C104K CHIP C 0.10UF RK73GB2A106J CHIP R J 1/10W CK73GB1H153K CHIP C 0.015UF K...
  • Page 43 KDC-HD942U PARTS LIST CD PLAYER UNIT (X32-6260-00) IN CD MECHA Desti- Desti- Ref. No. Parts No. Description Ref. No. Parts No. Description nation nation CP10 RK74GA1J101J CHIP-COM 100 J 1/16W R110 RK73GB2A913J CHIP R J 1/10W R112,113 RK73GB2A4R7J CHIP R...
  • Page 44 KDC-HD942U PARTS LIST ELECTRIC UNIT (X34-6320-10) Desti- Desti- Ref. No. Parts No. Description Ref. No. Parts No. Description nation nation CK73GB1A474K CHIP C 0.47UF C516 CK73GB1A105K CHIP C 1.0UF C517-520 CK73GB1C224K CHIP C 0.22UF CK73FB0J106K CHIP C 10UF CK73GB1H102K CHIP C...
  • Page 45 KDC-HD942U PARTS LIST ELECTRIC UNIT (X34-6320-10) Desti- Desti- Ref. No. Parts No. Description Ref. No. Parts No. Description nation nation CP603 RK74GA1J101J CHIP-COM 100 J 1/16W R356 RK73GB2A2R2J CHIP R J 1/10W R357 RK73FB2B102J CHIP R 1.0K J 1/8W CP604...
  • Page 46 KDC-HD942U PARTS LIST ELECTRIC UNIT (X34-6320-10) Desti- Desti- Ref. No. Parts No. Description Ref. No. Parts No. Description nation nation R618 RK73GB2A223J CHIP R J 1/10W D141,142 1SR154-400 DIODE D143 1SS355 DIODE R619 RK73GB2A103J CHIP R J 1/10W R620 RK73GB2A473J...
  • Page 47 KDC-HD942U PARTS LIST ELECTRIC UNIT (X34-6320-10) Desti- Desti- Ref. No. Parts No. Description Ref. No. Parts No. Description nation nation DTC124EUA DIGITAL TRANSISTOR D21-2507-04 SHAFT DTC144EUA DIGITAL TRANSISTOR D21-2508-04 SHAFT DTC144EUA DIGITAL TRANSISTOR D23-0963-04 RETAINER Q121-123 2SC4081 TRANSISTOR D39-0277-15 DAMPER...

  • Page 48: Specifications

    Frequency response (±1dB) ......10Hz~20kHz Total harmonic distortion (1kHz) ........0.010% Signal to Noise ratio (1kHz) .........105dB KENWOOD follows a policy of continuous advancements Dynamic range ..............93dB in development. For this reason specifi cations may be MP3 decode ..Compliant with MPEG-1/2 Audio Layer-3 changed without notice.

Table of Contents