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KDC-MP925/W8027 COMPONENTS DESCRIPTION ● SUB CIRCUIT UNIT (X16-2080-10) Ref No. Application / Functions Operation / Condition / Compatibility IC1 E2PROM E2PROM for security ● DISPLAY UNIT (X16-2530-11) Ref No. Application / Functions Operation / Condition / Compatibility IC1 Panel microprocessor Panel control microprocessor IC2 ROM IC Graphic ROM IC4 AVR For 3.3V power supply IC5 AVR For 2.5V power supply IC6 Buffer IC Level shift buffer IC (5V→3.3V) IC7 Buffer IC Level shift buffer IC (3.3V→5V)
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KDC-MP925/W8027 COMPONENTS DESCRIPTION Ref No. Application / Functions Operation / Condition / Compatibility IC9 AVR 3.3V AVR (IC2 DAC part) Q1,4 Level shift FET Level shift (3.3V - 5.0V) Q3,5 Level shift TR Level shift (3.3V - 5.0V) Q6 Level shift TR Level shift (3.3V - 5.0V) Q7 Level shift TR Level shift (3.3V - 5.0V) Q8 APC Auto power control Q9,10 Switching TR Sub beam delay control switch ● ELECTRIC UNIT (X34-3030-10, X34-3032-71) Ref No. Application / Functions Operation / Condition / Comp
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KDC-MP925/W8027 COMPONENTS DESCRIPTION Ref No. Application / Functions Operation / Condition / Compatibility Q27 BU detector When Q27 base level goes H, Q27 turned ON Q29 ACC detector When Q29 base level goes H, Q29 turned ON Q30,31 Muting driver When base level goes L, muting driver is turned ON Q201 Buffer Noise detect buffer amp Q202 E-VOL muting SW When Q202 base level goes H, muting SW is turned ON Q203~208 Pre-out muting SW When base level goes H, Pre-output is muted Q210 AGC For AGC for s
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KDC-MP925/W8027 MICROCOMPUTER’S TERMINAL DESCRIPTION Pin No. Pin Name I/O Description / Processing Operation Fig 18 TEST - NC (GND) 19 DIAG I Over voltage/Over current detection terminal (Normal : H, Bad condition : L) 20 MUTE O MUTE output terminal (ON : OPEN, OFF : L) 21 PRE MUTER O PREOUT (Rch) muting control terminal 22 PRE MUTEL O PREOUT (Lch) muting control terminal 23 BU DET I Momentary power dropped detection terminal (No Backup, Momentary power dropped : H, Backup : L) 24 ACC DET I ACC
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KDC-MP925/W8027 MICROCOMPUTER’S TERMINAL DESCRIPTION Pin No. Pin Name I/O Description / Processing Operation Fig 62 MOSW O CD mechanism motor driver SW (LOADING, EJECT, Brake : H) 63 FPM MOTOR B O FPM mechanism (Slider) control terminal 2 64 FPM MOTOR F O FPM mechanism (Slider) control terminal 2 65 FPM MOTOR O O FPM mechanism (Angle) control terminal 2 66 FPM MOTOR C O FPM mechanism (Angle) control terminal 2 67 O DATA I/O External display DATA terminal 2 68 O CLK I/O External display CLK termi
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KDC-MP925/W8027 MICROCOMPUTER’S TERMINAL DESCRIPTION Fig.1 WOW mode operation MODE WOW MODE1 WOW MODE2 WOW MODE3 FOCUS BYPASS L L L Don’t care TuBass L H L Don’t care 3D-STEREO L L H Don’t care FOCUS LOW H L L L (Hi-Z) FOCUS HI H L L H WOW LOW H H H L (Hi-Z) WOW HI H HHH Fig.2 FPM motor control SLIDE FPM mechanism ANGLE FPM mechanism FPM MOTOR B FPM MOTOR F operation FPM MOTOR O FPM MOTOR C operation LL Standby LL Standby HL Backward operation HL Angle open direction LH Forward operation LH An
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KDC-MP925/W8027 MICROCOMPUTER’S TERMINAL DESCRIPTION Pin No. Pin Name I/O Description / Processing Operation 38 VSS - GND 39~42 KI1~KI4 I Key return input terminal 43 FLGCP2 O FL bright control terminal 44 NC - NC 45 SYS TX I DATA input from system microprocessor 46 SYS RX O DATA output to system microprocessor 47 FL CLK3 O Clock output to FL driver 48 KI5 I Key return input terminal (SRC, OPEN, EJECT interrupt port) 49 FL DATA3 O DATA output to FL driver 50 SCK1 I Clock input from FL driver 51
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KDC-MP925/W8027 MICROCOMPUTER’S TERMINAL DESCRIPTION Pin No. Pin Name I/O Description / Processing Operation 87 FL LATCH O Latch output to FL driver IC 88,89 NC - NC 90 REMO ON O Power supply control for remote control IC (H : ON, Hi-Z : OFF) 91 FL3.3V SW O FL3.3V control terminal (H : ON, Hi-Z : OFF) 92 FL+B SW O FL+B control terminal (H : ON, Hi-Z : OFF) 93 3.3V SW O 3.3V control terminal (L : ON, Hi-Z : OFF) 94 NC - NC 95 OE O OE control for Flash ROM (L : DATA transmission, Hi-Z : Wait ready
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KDC-MP925/W8027 TEST MODE ● How to enter the test mode ● Test mode specifications of the CD receiver While pressing and holding the Preset 1 and Preset 3 keys, •Forced ejection is inhibited in the reset start operation. When reset the unit. the unit is reset while a CD is loaded in it, resetting does not recognize the CD. • Each press of the Track Up key jumps to the following track ● How to exit from the test mode numbers : While holding the Preset 6 key, reset the unit. No. 9→No. 15→No. 10→No
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KDC-MP925/W8027 TEST MODE ● Menu-related specifications AM key Display panel E2PROM condition. • A short press of the Q key initiates the menu mode. (Display) P–ROM OK (Registered code) • Pressing the DNPP key on the remote initiates the Menu P–ROM NG (Code is write in error) mode. P–ROM WAIT (Unregistered code) • Continuous holding of a remote control key is inhibited, and P-ROM NON (Panel security nonfunctional) workings are short press of any keys. • Contrast is adjusted in 3 steps of 0 /
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KDC-MP925/W8027 TEST MODE ● Security information 3. How to inscription the panel security code 1. Enter the test mode. 1. Forced Power ON mode (All models) 2. Pressing the AM key on all lighting, check the “P-ROM WAIT” Even when the security (Cord) is approved, resetting the display. unit while holding the Q and Preset 4 keys makes it pos- 3. The NEXT key is long press 2 seconds, writing the code. sible to turn the power ON for 30 minutes. 4. Display is “P-ROM OK”. After 30 minutes have elapsed,
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A B C D E KDC-MP925/W8027 PC BOARD (COMPONENT SIDE VIEW) 1 ELECTRIC UNIT X34-3030-10, X34-3032-71 (J74-1473-32) CN1 IC4 12 2 CN2 11 1 2 1 224 C100 9 16 2 1 25 8 1 L1 C277 C274 C273 J1 D1 C272 C215 Q24 Q13 C205 R29 R49 BE C275 C27 5 4 BE MUTE IC18 R14 22 12 Q8 81 R6 1 28 23 11 IGO IC2 Q6 C265 C264 R244 R7 IC3 85 C299 C259 3 CN3 33 1 IC5 C3 Q1 D504 Q208 IC13 34 44 Q207 C269 C268 R508 C300 C8 1 4 R33 16 R245 R503 R221 C234 15 15 R504 E B 85 14 C267 R219 Q203 R609 C238 24 13 Q9 IC11 25 12 C5 C201 C2
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F G H I J KDC-MP925/W8027 1 DISPLAY UNIT SWITCH UNIT X16-2530-11 (J74-1587-02) X16-2560-10 (J74-1590-02) D22 24 W2 25 2 C279 D21 A1 1 C275 C278 C206 L7 C10 D20 CN3 3 C9 S4 S19 D19 2 1 2 C314 1 L305 L307 C8 R308 Q305 R307 D18 BE C311 R306 R305 L306 C502 X3 24 4 C7 BE D17 EB C5 R15 R14 EB D15 X34-303x-xx Ref. No. Address Ref. No. Address R13 R12 5 Q9 3A IC1 5D EB Q11 2A IC2 3D Q12 3A IC3 3A Q13 2A IC4 2E D14 Q15 4C IC5 3D C4 Q24 2B IC6 4D Q25 3B IC11 3C Q26 4B IC12 4C Q203 3C IC13 3C Q204 4C IC18
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K L M N O KDC-MP925/W8027 PC BOARD (FOIL SIDE VIEW) 1 ELECTRIC UNIT X34-3030-10, X34-3032-71 (J74-1473-32) C2 BU TH1 2 D208 GND D207 Q23 E B R204 D205 D206 FM+B Q202 C217 E B B E C216 D501 8 5 AM+B C213 C260 R203 C261 IC17 Q304 C262 D502 D503 C263 R254 14 3 C257 B E C258 C255 C256 E B R255 PLL+B C253 Q303 C254 R279 R266 C251 R506 C252 FPM1+ FPM1- R231 C290 R507 C237 C312 C232 C236 R607 C235 R505 R610 R611 D202 D201 C231 R230 C239 R603 R612 R206 R604 8 1 C224 C230 R606 C225 C602 R210 C601 R207 R2
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KS4 D24 R11 ESDGND DGND KS1 12 CN14 DSI DSI R8 S5 R10 ILLGND ILL+B PAN5V RED C2 RST GREEN KS2 R2 KS3 VOLA VOLB KI1 R3 R4 KI4 KI5 R5 KI3 KI2 FROM CHECK Q200 C200 CP10 CP200 CP8 R201 E2PDATA Q8 R202 D1 R41 20 1 8 5 R3 R34 C31 L3 C28 R204 E2P5V C13 CP31 24 1 D3 R35 108 73 Q10 Q6 1 109 72 4 R7 Q3 R43 L8 R300 R8 D4 R42 CP30 C14 R18 R49 R39 R28 C10 D2 R2 Q5 R40 R33 CP11 CP23 C9 28 CN1 1 R23 R37 C23 CP21 R22 CP1 Q4 CP27 IC4 132 R38 R32 R21 C15 CP19 C19 C16 R31 CP28 C20 CP6 D5 C2 21 40 L4 CP2 +3 3V DO C
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U V W X Y KDC-MP925/W8027 PC BOARD (COMPONENT SIDE VIEW) 1 CD PLAYER UNIT X32-5540-00 (J74-1552-12) 2 C50 R66 C72 C29 C25 RFOK C67 CP6 R38 3 R68 32 17 CP12 33 16 C27 IC3 CP13 48 1 49 64 CP5 4 CP7 CP15 CP3 C15 CBE MIACK CP2 EC B C13 IC6 4 3 C52 5 1 5 R69 R6 EB Q4 R13 6 X32-5540-00 Ref. No. Address IC3 4V IC6 5W Q4 5V Q5 5X Q7 5W 7 Refer to the schematic diagram for the values of resistors and capacitors. 18 S4 S1 S2 R65 R27 CP14 C44 C11 L1 R49 C10 C41 R48 R47 SG R42 C66 R46 C37 D CP11 /RESET MIDI
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Z AA AB AC AD KDC-MP925/W8027 PC BOARD (FOIL SIDE VIEW) 1 CD PLAYER UNIT X32-5540-00 (J74-1552-12) VR R64 VCC A 75 51 2 C+D Vref 76 50 R44 CN2 PD FLAG B 1 R45 TX IC2 R39 16 HOLD LD MIRR FE LOCK TRK IN CP9 TZD R43 100 26 TRK OUT 1 25 FZD FCS DOWN B E C30 CP8 FCS UP C22 C23 X1 Q10 R37 D3.3V C26 C21 R9 R4 C7 R70 C24 D2 DAVdd3.3V 3 BE SDIO PON 4 3 R3 R22 BCKIA C71 C5 12EJE IC9 5 1 A.+8V 4 3 TXO IC5 LRCKIA /EJECT R2 5 1 Lch SLED IN LOS SDO 3 1 SLED OUT C70 A.GND C20 C64 /LOAD IC8 Rch 45 DATA SPDL- C1
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A B C D E KDC-MP925/W8027 1 (X34-303x-xx) WHT GRN UNIT 8 9 MODEL NAME ABCDE FGH I A1 C100 C250 C259 No. FRONT L REAR L WHT/BLK GRN/BLK 7 10 KDC-MP925 0-10 YES YES YES NO X86-3730-11 C90-5624 C92-0687 C92-0686 0-11 YES YES YES YES X86-3730-11 C90-5626 CE32AT1H2R2M CE32AT1H010M GRY/BLK VIOL/BLK KDC-X879 6 11 FX-9100 0-01 YES NO NO YES X86-3730-01 C90-5626 CE32AT1H2R2M CE32AT1H010M FRONT R REAR R GRY VIOL 2-71 NO NO YES YES X86-3732-70 C90-5626 CE32AT1H2R2M CE32AT1H010M KDC-W8027 5 12 BLU PNK/BLK A
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CD RECEIVER
KDC-MP925
KDC-W8027
© 2004-02 PRINTED IN JAPAN
SERVICE MANUAL
( )
B53-0131-00 N 2439
CD mechanism extension cord (24PIN) : W05-0935-00
Panel assy
KDC-MP925 (A64-3226-01)
Panel assy
(A64-3248-02)
Panel assy
KDC-W8027 (A64-3232-01)
Panel assy
(A64-3252-02)
* DC cord Escutcheon Mounting hardware assy
* DC cord * Antenna adaptor
(E30-6295-05) (B07-3078-01) (J21-9823-03)
(E30-4942-05) (T90-0552-05)
*Remote controller assy *Remote controller assy Plastic cabinet assy
(A70-2026-05) : R
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KDC-MP925/W8027 BLOCK DIAGRAM AUX IN 8V (X34- ) IC2 IC5 Q207,208 IC13 PRE OUT TUNER FM PRE MUTE OP AMP (SUB WOOFER) 8V AUDIO OUT AM 9V CD Q203,204 Q303,304 IC12 E-VOL CH SYSTEM PRE OUT & AM+B PRE MUTE OP AMP E'S+ (REAR) MPX 9V 8V 8V BPF AGC Q205,206 IC11 QUAL PRE OUT PRE MUTE OP AMP 8V BUFFER (FRONT) 8V 9V S-METER SW5V BUFFER IC6 IC4 SW5V WOW 8V SP OUT (FL) IC14 SP OUT (FR) IC1 IC20 RDS POWER DECODER FOCUS SP OUT (RL) IC 8V SW SP OUT (RR) IC9 MUTE BU5V DRIVER CD BU5V EEPROM 8V WIRED REMO/ SERVO
