KDC-MP738U/W7541U /W7541UY/X792/X8009U BLOCK DIAGRAM (X34-579) BACK UP AUX IN LX BUS Q371,377 Q370,372-376 Q400 PRE OUT MUTE (F/R SW) AM+B MUTE IC480 (FST) IC530 IC450 SW5V MUTE E2PROM POWER E-VOL BU5V DRIVER SP OUT FM/AM (FL/FR/RL/RR) CD/USB Q120 B.U DET...
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KDC-MP738U/W7541U /W7541UY/X792/X8009U BLOCK DIAGRAM MOTHER CD PLAYER UNIT (X32-6130-00) BOARD (X34- ) DPU1 SRAMSTB SRAMSTB SIGNAL A,B,C,E,F BUCK BUCK PIO0 PIO0 RF AMP MRST MRST BSIF ST REQ BSIF ST REQ VREF SERVO BSIF GATE BSIF GATE PROCESSOR BSIF DATA...
KDC-MP738U/W7541U /W7541UY/X792/X8009U COMPONENTS DESCRIPTION ● ELECTRIC UNIT (X34-579x-xx) Ref. No. Application / Function Operation / Condition / Compatibility IC10 Audio8V Ref Power Supply Output 1.27V. IC20 Regulator Power supply for BU3.3V. IC60 Switching Regulator Power supply for 65V FL+B. (to PANEL)
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KDC-MP738U/W7541U /W7541UY/X792/X8009U COMPONENTS DESCRIPTION Ref. No. Application / Function Operation / Condition / Compatibility Q350,351 4VPRE+B When Q353’ go ON, 4VPRE+B is outputs. (~12V) Q352 4VPRE+B Protect When 4VPRE+B is overcurrent, Q352 turn Q350 off. Q353,354 4VPRE+B SW When Q354’ Base goes Hi, Q353 is ON.
KDC-MP738U/W7541U /W7541UY/X792/X8009U MICROCOMPUTER’S TERMINAL DESCRIPTION ● SYSTEM MICROCOMPUTER 30624MGPB77GP (X34: IC500) 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. (In models without RDS) Output L fi...
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KDC-MP738U/W7541U /W7541UY/X792/X8009U MICROCOMPUTER’S TERMINAL DESCRIPTION Truth Pin No. Pin Name Application Processing / Operation / Description Value Table NC (D5V_DIS) Not used Output L fi xed Panel LED H: ON, Hi-Z: OFF PON_ILL FL fi lament power supply Turned OFF when the display is black out.
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KDC-MP738U/W7541U /W7541UY/X792/X8009U MICROCOMPUTER’S TERMINAL DESCRIPTION Truth Pin No. Pin Name Application Processing / Operation / Description Value Table L: Mute ON, Independent setup of time constant 10ms, H: In normal condition MUTE_2 IC-2 SW MUTE control Shall be used together with MUTE_PRE_SW...
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Data from slave unit LX_DATA_M Data to slave unit LX_CLK I/O LX BUS clock q Destination setting TYPE_2 (91) TYPE_1 (90) Destination R540 R530 R529 R528 KDC-MP738U [∗] KDC-X792 TYPE1 KDC-X692 (90) SKDCMP9090U(Visteon) KDC-MP638U KDC-X8009U TYPE2 (91) KDC-X7009U U737 (J) (Reserve)
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KDC-MP738U/W7541U /W7541UY/X792/X8009U MICROCOMPUTER’S TERMINAL DESCRIPTION w CD_MOTOR, CD_LOEJ CD_MOTOR CD_LOEJ Standby Eject Load Brake Hi-z e AFS process RDS_AFS_M Status AFS LOW No sound output AF search AFS MID There is sound output in AF search. AFS HIGH Hi-Z Normal reception...
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KDC-MP738U/W7541U /W7541UY/X792/X8009U MICROCOMPUTER’S TERMINAL DESCRIPTION ● SUB MICROCOMPUTER 92CD28AFG6VV1 (X34: IC700) Pin No. Pin Name Application Processing / Operation / Description MRST Reset L: RESET, H: In normal condition STOP signal from system μ-com(Momentary power down H: Normal MSTOP detection / Recovery to low power consumption mode)
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KDC-MP738U/W7541U /W7541UY/X792/X8009U MICROCOMPUTER’S TERMINAL DESCRIPTION Pin No. Pin Name Application Processing / Operation / Description CD_MUTE Mute request to system μ-com L: Mute request, H: While in normal REQ_M REQ signal to system μ-com L: Request IPOD_RST RESET BOOT Terminal for writing FLASH...
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KDC-MP738U/W7541U /W7541UY/X792/X8009U MICROCOMPUTER’S TERMINAL DESCRIPTION ● PANEL MICROCOMPUTER 703134AGJ018A (X16-624: IC4) Pin No. Pin Name Application Processing / Operation / Description D14-D8 Data input/output 3.3VDD 3.3V 10~17 D7-D0 Data input/output Control lighting time (brightness tone) with the FLGCP1 FL tone control...
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KDC-MP738U/W7541U /W7541UY/X792/X8009U MICROCOMPUTER’S TERMINAL DESCRIPTION Pin No. Pin Name Application Processing / Operation / Description CLK IN1 Serial sync clock input Sync to FL_CLK FL_LAT FL latch control FL_DATA1 FL serial control data SI1 3.3VDD 57,58 X2,X1 Clock input 6.6MHz Internal 66MHz...
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KDC-MP738U/W7541U /W7541UY/X792/X8009U MICROCOMPUTER’S TERMINAL DESCRIPTION Pin No. Pin Name Application Processing / Operation / Description L: Operate, H: Wait Memory operation permission Hi-Z: When starting up SW3.3 Not used Output L fi xed 1 pulse/2 clicks MULTI CCW Rotary 2 A input (For new operation) 15 pulses/360°...
KDC-MP738U/W7541U /W7541UY/X792/X8009U TEST MODE ● How to enter the test mode Soft Mute adjustment Press and hold the [1] and [3] keys and reset. (While ”----” is being displayed, power can be ON for 30 FM Key FM Key minutes.)
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KDC-MP738U/W7541U /W7541UY/X792/X8009U TEST MODE Seek Stop Level Adjustment (Manual) • AUTO 98.1 … • Forced WIDE 98.1 (Display) MNN_3.98V : When at Normal (Local OFF) … (Display) MNL_4.44V : When at Local (Local ON) • Forced MIDDLE … 98.1 • Forced NARROW 98.1...
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KDC-MP738U/W7541U /W7541UY/X792/X8009U TEST MODE keys in 3 steps: L15↔0↔R15. (Default value: 0) How to transfer ROM data • Bass/Middle/Treble Level are adjusted by the VOL knob q Enter the Test mode (All lights go on). and [ ] / [ ] keys in 3 steps: -8↔0↔8.
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KDC-MP738U/W7541U /W7541UY/X792/X8009U TEST MODE ● Dual Zone ● Special displays while all lights are on • If the [AUTO] or [TI] keys is pressed briefly while in a When all lights are on with STANDBY source, if the fol- source other than STANDBY, 2ZONE is switched be- lowing keys are pressed, the following messages are dis- tween ON / OFF.
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KDC-MP738U/W7541U /W7541UY/X792/X8009U TEST MODE Table 1-Version & Service information display mode Table 2-CD information display mode Key pressed briefl y: Version is displayed I2C communication condition and CD mechanism error log (Display) C0713WK__SYS1.23 display (Display) STYPE: xx_PAN1.11 (Display) I2C_●●____________ (Display) PTYPE: x__MEM3.21a (Display) ERR_1-▲▲, 2-▲▲, 3-▲▲...
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KDC-MP738U/W7541U /W7541UY/X792/X8009U TEST MODE played. <MONO FL supporting model + 64COL FL / FLASH ROM At the completion of the deletion, “Erase_OK!!” is dis- PANEL> played. If the “Erase_NG!!!!!!” is displayed, it indicates that the _Mother : MONO NG !
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KDC-MP738U/W7541U /W7541UY/X792/X8009U TEST MODE ● Clearing backup / installer memory & CD mech- ● Clearing DC offset error detection information anism information & service information & DC (Clear E2PROM data in the front end) offset error detection information 1. Press and hold [3] and [6] keys and reset-start to go into the DC offset error display mode.
KDC-MP738U/W7541U /W7541UY/X792/X8009U TEST MODE MENU. 6. Release the test mode. (Refer to “How to clear the test When “Security” is displayed, press [ ] key for 1 sec- mode”.) ∗ Note: All clear cannot be used to clear the security ond or longer to enter the security registration mode.
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KDC-MP738U/W7541U /W7541UY/X792/X8009U 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.
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KDC-MP738U/W7541U /W7541UY/X792/X8009U PC BOARD (COMPONENT SIDE VIEW) (FOIL SIDE VIEW) SWITCH UNIT SWITCH UNIT X16-624x-xx (J76-0484-02) X16-624x-xx (J76-0484-02) CP37 CP36 VOUT CP10 CP13 CP12 CP14 CP16 TRST CP24 MODE1 CP28 X16-624x-xx X16-624x-xx CP30 Ref. No. Address Ref. No. Address CP31...
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KDC-MP738U/W7541U /W7541UY/X792/X8009U 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.
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KDC-MP738U/W7541U /W7541UY/X792/X8009U 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...
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KDC-MP738U/W7541U /W7541UY/X792/X8009U J420 AUX IN PRE OUT REAR (X34-579x-xx) J410 J361 J361 TP710 FRONT FRONT R415 TP709 5L I/F TP711 D410 D422 D428 D411 D420 D423 D412 D421 CH ESD REAR FRONT R372 R373 R378 R379 R384 R385 Q370 Q372...
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KDC-MP738U/W7541U /W7541UY/X792/X8009U TP588 C476 TP595 BU5V 1u16 R453 C452 10u16 4.3K C475 6.8V IC510 IC450 AGND C511 VOUT 0.01 5.0V 0-4.4V R433 C450 R534 R450 R194 POWER 2.2K WIRED REMO TP582 R195 TP570 RDS QUAL R210 0 or 1.6 or 2.5 o 3.4 or 5.0V...
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Q702 • DC voltages are as measured with a high impedance KDC-MP738U/W7541U/W7541UY/X792/X8009U (1/2) volt me ter. Val ues may vary slight ly due to vari a tions between in di vid u al in stru ments or/and units.
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KDC-MP738U/W7541U /W7541UY/X792/X8009U (X16-624x-xx) PAN5V PAN5V GREEN (X16-624x-xx) 3.3V ROM CORRECTION DESTI- MODEL NAME NATION KDC-X792 3.3V KDC-MP738U KDC-W7541U GND1 VOUT ILL+B KDC-W7541UY CP32 KDC-X8009U 3.3V GND2 REMO. CON. RECEIVER DGND ILL+B ILL+B SW3.3V D3.3V FLGND 103,104 0.01 3.3V 3.3V FLASH ROM 3.3V...
CHIP C 0.033UF K R43,44 RK73PB2H3R9J CHIP R J 1/2W C49,50 CK73GB1H104K CHIP C 0.10UF E1 : KDC-W7541U E2 : KDC-W7541UY (Europe) Indicates safety critical com po nents. K : KDC-X792 K1 : KDC-MP738U (North America) M : KDC-X8009U (Other Areas)
CHIP C 1000PF CK73EB1C106K CHIP C 10UF R232 RK73GB2A104J CHIP R 100K J 1/10W E1 : KDC-W7541U E2 : KDC-W7541UY (Europe) Indicates safety critical com po nents. K : KDC-X792 K1 : KDC-MP738U (North America) M : KDC-X8009U (Other Areas)
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CK73GB1A105K CHIP C 1.0UF K1E1E2 C488-490 CK73GB1A105K CHIP C 1.0UF X501 L78-0872-05 RESONATOR (12MHZ) E1 : KDC-W7541U E2 : KDC-W7541UY (Europe) Indicates safety critical com po nents. K : KDC-X792 K1 : KDC-MP738U (North America) M : KDC-X8009U (Other Areas)
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J 1/10W E1E2 R377 RK73GB2A331J CHIP R J 1/10W R378,379 RK73GB2A223J CHIP R J 1/10W E1 : KDC-W7541U E2 : KDC-W7541UY (Europe) Indicates safety critical com po nents. K : KDC-X792 K1 : KDC-MP738U (North America) M : KDC-X8009U (Other Areas)
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D 1/10W R530 RK73GB2A223J CHIP R J 1/10W KK1M1 R758-760 RK73GB2A473J CHIP R J 1/10W E1 : KDC-W7541U E2 : KDC-W7541UY (Europe) Indicates safety critical com po nents. K : KDC-X792 K1 : KDC-MP738U (North America) M : KDC-X8009U (Other Areas)
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DIGITAL TRANSISTOR IC80 LT3684EMSE ANALOGUE IC Q354 DTC124EUA DIGITAL TRANSISTOR KE1E2 Q354 DTC124EUA DIGITAL TRANSISTOR E1 : KDC-W7541U E2 : KDC-W7541UY (Europe) Indicates safety critical com po nents. K : KDC-X792 K1 : KDC-MP738U (North America) M : KDC-X8009U (Other Areas)
EXTENSION SPRING G01-3076-04 EXTENSION SPRING G01-3077-14 EXTENSION SPRING G02-1399-14 FLAT SPRING G02-1547-14 FLAT SPRING E1 : KDC-W7541U E2 : KDC-W7541UY (Europe) Indicates safety critical com po nents. K : KDC-X792 K1 : KDC-MP738U (North America) M : KDC-X8009U (Other Areas)
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KDC-MP738U/W7541U /W7541UY/X792/X8009U 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.
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KDC-MP738U/W7541U /W7541UY/X792/X8009U SPECIFICATIONS (KDC-W7541U/W7541UY) FM tuner section USB Interface Frequency range (50 kHz space) ..87.5 MHz – 108.0 MHz USB Standard ............USB1.1/ 2.0 Usable sensitivity (S/N = 26dB) ......0.7 μV/75 Ω Maximum Supply current .......... 500 mA Quieting Sensitivity (S/N = 46dB) ....... 1.6 μV/75 Ω...
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AAC decode ..........AAC-LC “.m4a” fi les Installation Size (W x H x D) ....182 x 53 x 155 mm Weight ................1.4 kg KENWOOD follows a policy of continuous advancements in development. For this reason specifi cations may be changed without notice.