KDC-W4031/W4031Y/W409/W409Y KDC-W431GY/W4531/W4531Y/WF431A BLOCK DIAGRAM ELECTRIC UNIT (X34-) L506 FM AGC AM+B Q501 Q351,352 AM AGC PRE MUTE PRE OUT IC10 FM (J/K Type) : 1800mV FM (E Type) 1372mV AM (J/K Type) 600mV MPX OUT SERVO AM (E Type) 855mV...
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KDC-W4031/W4031Y/W409/W409Y KDC-W431GY/W4531/W4531Y/WF431A COMPONENTS DESCRIPTION ELECTRIC UNIT (X34-3402-7x) Ref. No. Application / Function Operation / Condition SYSTEM µ-COM System control. POWER SUPPLY DC5Vx2, 7.9Vx1, 8.1Vx1, 10.3V, P.CON, P-ANT output. POWER IC Audio signal amplifier. MUTE LOGIC Mute control. RDS DECODER RDS decode.
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KDC-W4031/W4031Y/W409/W409Y KDC-W431GY/W4531/W4531Y/WF431A COMPONENTS DESCRIPTION Ref. No. Application / Function Operation / Condition SELECTOR (SERIAL DATA) Serial audio data switch. DAC 3.3V AVR 3.3V power supply for IC2. LEVEL SHIFT 3.3V to 5.0V. Q3~7 LEVEL SHIFT 3.3V to 5.0V. AUTOMATIC POWER CONTROL LD driver.
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KDC-W4031/W4031Y/W409/W409Y KDC-W431GY/W4531/W4531Y/WF431A MICROCOMPUTER’S TERMINAL DESCRIPTION Active Pin No. Pin Name Application Processing Operation (H/L) Display OFF, Key reset, TDF panel OFF : L VFD RST Reset output to VFD driver Display ON, Key scan : H VFD CE Chip enable output to VFD driver...
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KDC-W4031/W4031Y/W409/W409Y KDC-W431GY/W4531/W4531Y/WF431A MICROCOMPUTER’S TERMINAL DESCRIPTION Active Pin No. Pin Name Application Processing Operation (H/L) Refer to “CD MECHA CONTROL OPERATION” CD LOEJ CD motor control on the TRUTH TABLE Refer to “CD MECHA CONTROL OPERATION” CD MOTOR CD motor control on the TRUTH TABLE CD mecha µ-com reset...
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MICROCOMPUTER’S TERMINAL DESCRIPTION TRUTH TABLE • TUN TYPE TYPE 1 TYPE 2 General models commercially-designated as pure KENWOOD brand (Initial value) Initial value setting • RDS AFSL (AF search) Normal condition communication (IC10 side : High) High (Quality time constant long / Stereo Decoder PLL : Not hold)
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KDC-W4031/W4031Y/W409/W409Y KDC-W431GY/W4531/W4531Y/WF431A MICROCOMPUTER’S TERMINAL DESCRIPTION CD MECHANISM µ-COM : IC1 on X32- (CD PLAYER UNIT) Active Pin No. Pin Name Application Processing Operation (H/L) VREFL Reference power supply input terminal for ADC (L). AVSS GND terminal for ADC. AVCC Power supply terminal for ADC.
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KDC-W4031/W4031Y/W409/W409Y KDC-W431GY/W4531/W4531Y/WF431A MICROCOMPUTER’S TERMINAL DESCRIPTION Active Pin No. Pin Name Application Processing Operation (H/L) L : Correction is possible. FLAGIN C2Err impossibility detection. H : Correction is impossible. 51~61 DVSS GND. Non-maskable interrupt request. DVCC Power supply terminal. 65~77 NC/BOOT Mask : Not connected.
KDC-W4031/W4031Y/W409/W409Y KDC-W431GY/W4531/W4531Y/WF431A TEST MODE How to enter the test mode PRESET • When pressed for less than 1 second : CD EJECT While simultaneously press PRESET “1” key and PRESET “3” “5” key number display key, press “RESET” button. (Display) : EJC x x x x x...
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KDC-W4031/W4031Y/W409/W409Y KDC-W431GY/W4531/W4531Y/WF431A SPECIAL MODE Security (KDC-W4531/W4531Y only) DC offset error detection confirmation mode • How to enter the forced POWER ON mode Confirmation mode : While depressing PRESET “3” key and PRESET “6” key While “– – – –” is being displayed, while simultaneously simultaneously, press on the “RESET”...
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KDC-W4031/W4031Y/W409/W409Y KDC-W431GY/W4531/W4531Y/WF431A ADJUSTMENT After replacing the following parts, adjust as follows. 1st AM MIX / 2nd AM MIX ADJUSTMENT ADJUSTMENT POINT : L508 (1st AM MIX) / L509 (2nd AM MIX) REPLACED PARTS ADJUSTMENT ITEMS VOLTAGE VALUE CHECK POINT : S-METER check land (X34-) Ref.
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KDC-W4031/W4031Y/W409/W409Y KDC-W431GY/W4531/W4531Y/WF431A PC BOARD (COMPONENT SIDE VIEW) (FOIL SIDE VIEW) SWITCH UNIT X16-2932-7x (J76-0055-02) SWITCH UNIT X16-2932-7x (J76-0055-02) PAN-SW5V FL-SW9.8V LED+B PAN5V FL+B X16-2932-7x X16-2932-7x DATAS Ref. No. Address Ref. No. Address REMO RTRY-CCW TDF-DET ESD-GND Refer to the schematic dia- gram for the values of resis- tors and capacitors.
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KDC-W4031/W4031Y/W409/W409Y KDC-W431GY/W4531/W4531Y/WF431A PC BOARD (COMPONENT SIDE VIEW) CD PLAYER UNIT X32-5500-00 (J74-1552-12) RFOK CP12 CP13 CP15 MIACK X32-5500-00 Ref. No. Address Refer to the schematic diagram for the values of resistors and capacitors.
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KDC-W4031/W4031Y/W409/W409Y KDC-W431GY/W4531/W4531Y/WF431A PC BOARD (FOIL SIDE VIEW) CD PLAYER UNIT X32-5500-00 (J74-1552-12) Vref FLAG HOLD MIRR LOCK TRK IN TRK OUT FCS DOWN FCS UP C22 C23 D3.3V DAVdd3.3V SDIO BCKIA 12EJE A.+8V LRCKIA /EJECT SLED IN SLED OUT A.GND...
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KDC-W4031/W4031Y/W409/W409Y KDC-W431GY/W4531/W4531Y/WF431A SWITCH UNIT (X16-293x-xx) ANODE CONNECTION 3GA,3GB 1GA,1GB NAME — col (Downside) (3GB/1GB/3GA/2G) R80 33 R82 33 col (Upside) — — — — — REMOTE ∗ SW5V SENSOR (14-SEGMENT) KEY MATRIX DISP ∗ Q or EQ EJECT 100K PANEL...
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KDC-W4031/W4031Y/W409/W409Y KDC-W431GY/W4531/W4531Y/WF431A CAUTION : For continued safety, re- place safety critical components only with manufacturer’s recommended parts (refer to parts list). Indicates safety critical components. To reduce the risk of electric shock, leakage-current or resistance measure- ments shall be carried out (exposed parts...
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KDC-W4031/W4031Y/W409/W409Y KDC-W431GY/W4531/W4531Y/WF431A EXPLODED VIEW (CD MECHANISM) DPU1 DFPC1 (X32) φ : N09-4460-05 : N09-4472-15 M1.7x8.0 M1.7x2.5 : N09-6004-05 M2x2 : N09-6007-05 φ : N09-6051-05 2x5(BLK) : N19-2163-04 1.6 WASHER : N39-2020-46 M2x2 : N09-6108-05 M2x3.5 φ : N09-6155-05 Parts with the exploded numbers larger than 700 are not supplied.
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KDC-W4031/W4031Y/W409/W409Y KDC-W431GY/W4531/W4531Y/WF431A EXPLODED VIEW (UNIT) DME1 : N29-0205-04 : N80-2006-48 : N80-2008-43 : N83-3005-48 : N86-2610-48 : N80-3010-48 : N83-3005-48 : N83-3020-48 : N86-2606-48 (X34) (X16-) (X34-) Depends on the model. Refer to the parts list. Parts with the exploded numbers larger than 700 are not supplied.
MP3 Decode ..Compliant with MPEG-1/2 Audio Layer-3 WMA Decode ..Compliant with WINDOWS MEDIA AUDIO KENWOOD follows a policy of continuous advancements in development. For this reason specifications may be changed without notice. KENWOOD CORPORATION 2967-3, Ishikawa-machi, Hachioji-shi, Tokyo, 192-8525 Japan KENWOOD USA CORPORATION KENWOOD ELECTRONICS ITALIA S.p.A.