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Kenwood KDC-W4031 Service Manual
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Kenwood KDC-W4031 Service Manual

Cd receiver
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See also: Instruction Manual
CD RECEIVER
KDC-W4031/Y
QQ
3 7 63 1515 0
KDC-W409/Y
KDC-W431GY
KDC-W4531/Y
KDC-WF431A
SERVICE MANUAL
PANEL ASSY
KDC-W4031/Y (A64-3455-02)
VOL
AUD
SET UP
MENU
FF
PANEL ASSY
KDC-W431GY (A64-3457-02)
VOL
AUD
SET UP
MENU
FF
TE
L 13942296513
PANEL ASSY
KDC-WF431A (A64-3466-02)
VOL
AUD
SET UP
FF
MENU
LEVER
(D10-4589-04) x2
ANTENNA ADAPTOR
(T90-0523-05)
www
.
* Depends on the model. Refer to the parts list.
/PTY
SCAN
RDM
REP
F.SEL
SCAN
RDM
REP
F.SEL
/PIY
SCAN
RDM
REP
F.SEL
DC CORD
(E30-6413-05)
* ESCUTCHEON
(B07-xxxx-xx)
x
ao
u163
y
i
2 9
8
PANEL ASSY
KDC-W409/Y (A64-3456-02)
VOL
AUD
SET UP
MENU
PANEL ASSY
KDC-W4531/Y (A64-3454-02)
VOL
AUD
SET UP
MENU
Q Q
3
6 7
1 3
1 5
SPARE TDF PANEL
MAIN UNIT NAME
KDC-W4031/Y
KDC-W409/Y
KDC-W431GY
KDC-W4531/Y
KDC-WF431A
PLASTIC CABINET ASSY
(A02-2736-03)
co
.
9 4
2 8
© 2004-12 PRINTED IN JAPAN
B53-0230-00 ( N ) 1813
/PTY
FF
SCAN
RDM
REP
F.SEL
External Media Control
/PTY
SCAN
RDM
REP
F.SEL
M.RDM
FF
0 5
8
2 9
9 4
2 8
TDF PARTS No.
TDF NAME
Y33-2140-60
TDF-W4531
Y33-2140-65
TDF-W409
Y33-2140-61
TDF-W431GY
Y33-2140-60
TDF-W4531
Y33-2140-63
TDF-WF431
MOUNTING HARDWARE ASSY
(J21-9716-03)
m
This product uses Lead Free solder.
9 9
9 9

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Summary of Contents for Kenwood KDC-W4031

  • Page 1 3 7 63 1515 0 KDC-W409/Y KDC-W431GY KDC-W4531/Y KDC-WF431A SERVICE MANUAL © 2004-12 PRINTED IN JAPAN B53-0230-00 ( N ) 1813 PANEL ASSY PANEL ASSY KDC-W4031/Y (A64-3455-02) KDC-W409/Y (A64-3456-02) /PTY /PTY SET UP SET UP MENU SCAN F.SEL MENU SCAN F.SEL...

  • Page 2: Block Diagram

    KDC-W4031/W4031Y/W409/W409Y KDC-W431GY/W4531/W4531Y/WF431A BLOCK DIAGRAM 3 7 63 1515 0 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...

  • Page 3: Components Description

    KDC-W4031/W4031Y/W409/W409Y KDC-W431GY/W4531/W4531Y/WF431A COMPONENTS DESCRIPTION 3 7 63 1515 0 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.

  • Page 4: Switch Unit (X16-2932-7X)

    KDC-W4031/W4031Y/W409/W409Y KDC-W431GY/W4531/W4531Y/WF431A COMPONENTS DESCRIPTION 3 7 63 1515 0 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.
  • Page 5 KDC-W4031/W4031Y/W409/W409Y KDC-W431GY/W4531/W4531Y/WF431A MICROCOMPUTER’S TERMINAL DESCRIPTION 3 7 63 1515 0 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...
  • Page 6 KDC-W4031/W4031Y/W409/W409Y KDC-W431GY/W4531/W4531Y/WF431A MICROCOMPUTER’S TERMINAL DESCRIPTION 3 7 63 1515 0 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”...
  • Page 7 3 7 63 1515 0 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)

  • Page 8: Cd Mechanism Μ-Com : Ic1 On X32- (Cd Player Unit)

    KDC-W4031/W4031Y/W409/W409Y KDC-W431GY/W4531/W4531Y/WF431A MICROCOMPUTER’S TERMINAL DESCRIPTION 3 7 63 1515 0 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.
  • Page 9 KDC-W4031/W4031Y/W409/W409Y KDC-W431GY/W4531/W4531Y/WF431A MICROCOMPUTER’S TERMINAL DESCRIPTION 3 7 63 1515 0 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.

  • Page 10: Test Mode

    KDC-W4031/W4031Y/W409/W409Y KDC-W431GY/W4531/W4531Y/WF431A TEST MODE 3 7 63 1515 0 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”...

  • Page 11: Special Mode

    KDC-W4031/W4031Y/W409/W409Y KDC-W431GY/W4531/W4531Y/WF431A SPECIAL MODE 3 7 63 1515 0 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”...
  • Page 12 KDC-W4031/W4031Y/W409/W409Y KDC-W431GY/W4531/W4531Y/WF431A ADJUSTMENT 3 7 63 1515 0 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.
  • Page 13 KDC-W4031/W4031Y/W409/W409Y KDC-W431GY/W4531/W4531Y/WF431A PC BOARD 3 7 63 1515 0 (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 L 13942296513 FL+B X16-2932-7x X16-2932-7x DATAS Ref. No. Address Ref. No. Address REMO...
  • Page 14 KDC-W4031/W4031Y/W409/W409Y KDC-W431GY/W4531/W4531Y/WF431A PC BOARD (FOIL SIDE VIEW) 3 7 63 1515 0 ELECTRIC UNIT X34-3402-7x (J76-0048-12) J1/L51 W351 W312 W352 W335 W423 W251 C256 W252 C257 C258 C255 W398 R254 R253 W405 W406 W346 R273 R252 R257 R251 R271 W331...
  • Page 15 KDC-W4031/W4031Y/W409/W409Y KDC-W431GY/W4531/W4531Y/WF431A 3 7 63 1515 0 2 3 4 8 12 11 13 W251 Q352 Q351 C521 L505 L518 C303 C525 L600 C507 D503 L501 L520 Q330 W306 C516 C332 L506 R594 C604 D504 C626 C331 C527 W823 C503...

  • Page 16: Pc Board (Component Side View)

    KDC-W4031/W4031Y/W409/W409Y KDC-W431GY/W4531/W4531Y/WF431A PC BOARD (COMPONENT SIDE VIEW) 3 7 63 1515 0 CD PLAYER UNIT X32-5500-00 (J74-1552-12) RFOK CP12 CP13 L 13942296513 CP15 MIACK X32-5500-00 Ref. No. Address u163 Refer to the schematic diagram for the values of resistors and capacitors.
  • Page 17 KDC-W4031/W4031Y/W409/W409Y KDC-W431GY/W4531/W4531Y/WF431A PC BOARD (FOIL SIDE VIEW) 3 7 63 1515 0 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...

  • Page 18: Electric Unit (X34-3Xxx-Xx)

    KDC-W4031/W4031Y/W409/W409Y KDC-W431GY/W4531/W4531Y/WF431A 3 7 63 1515 0 DAUGHTER UNIT (X89-2690-10) ELECTRIC UNIT (X34-3xxx-xx) 2-PREOUT MUTE L602 C221 R229 R221 10u16 Q221 CN91 CN90 4.7K L509 MUTE CF51 CF52 2 VDD L508 Q222 CF53 10.700MHz 10.700MHz Q225 10.700MHz W101 4.7K C222...
  • Page 19 KDC-W4031/W4031Y/W409/W409Y KDC-W431GY/W4531/W4531Y/WF431A 3 7 63 1515 0 L602 D203 C201 0.01 3,43 TP404 MUTE LOGIC CF54 000kHz S-METER 4.5V ∗ R431 C565 TP408 ∗ R471 ∗ R470 C512 2.2K 10u16 5.0V TUN SMETER TP411 0.5V or RDS NOISE TUN SD 5.0V...
  • Page 20 1SS133 R252 TP31 D401 B30-1567-05 Q252 D501 RN739F D502,503 KP2311ETR-G D504 KV1430STL-G CONTROL STBY D506 HVC383B-E SIGNAL LINE R141 R140 R139 R138 R137 R136 R135 GND LINE FL+B B LINE KDC-W4031/W4031Y/W409/W409Y/W431GY/W4531/W4531Y/WF431A (1/2) u163 UMC2N DAN202U DA204U TC7SH08FU DTA114YUA X34-3402-7x (3/4)
  • Page 21 KDC-W4031/W4031Y/W409/W409Y KDC-W431GY/W4531/W4531Y/WF431A 3 7 63 1515 0 (X34-3xxx-xx) CATEGORY/ DESTI- C333, C605, D72, MODEL NAME X34-340x-xx X34-341x-xx X34-365x-xx C152 C255 C526 C604 606 CN3 D162 D260 Q151 FUNCTION NATION E303/S 0-01 YES YES YES YES YES YES YES YES 784225GC256A...
  • Page 22 KDC-W4031/W4031Y/W409/W409Y KDC-W431GY/W4531/W4531Y/WF431A 3 7 63 1515 0 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 L 13942296513 DISP ∗...
  • Page 23 KDC-W4031/W4031Y/W409/W409Y KDC-W431GY/W4531/W4531Y/WF431A 3 7 63 1515 0 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-...
  • Page 24 KDC-W4031/W4031Y/W409/W409Y KDC-W431GY/W4531/W4531Y/WF431A 3 7 63 1515 0 CD PLAYER UNIT (X32-5500-00) LEVEL SHIFT (DA) 0V (3.3V 5.0V) IOP1 IOP2 R34 4.7K (MP3) 0/3.3V C28 10 LEVEL SHIFT (3.3V 5.0V) 16.00MHz R35 100K 3.3V 0.2V 100K RESET 3.3V 3.8/0V 3.3V AVDD1 DGND1 2.4/0V...
  • Page 25 KDC-W4031/W4031Y/W409/W409Y KDC-W431GY/W4531/W4531Y/WF431A 3 7 63 1515 0 Q9,10 Vref DPU1(X92- ) 1.7Vp-p 390K OPTICAL 6800P PICKUP 0.3Vp-p 1.65V 1.65V RF2- 1.65V 1.0Vp-p FCS+ 1.0Vp-p TRK+ 3.9K TRK- 1.7Vp-p 3.3V FCS- 3300P ADVDD 3.3V 1.65V 0.01 3.0/0.3V 0.01 ADGND 91CW12AFG-5AR1 3.3/0V...
  • Page 26 KDC-W4031/W4031Y/W409/W409Y KDC-W431GY/W4531/W4531Y/WF431A EXPLODED VIEW (CD MECHANISM) 3 7 63 1515 0 DPU1 L 13942296513 DFPC1 (X32) φ : N09-4460-05 : N09-4472-15 M1.7x8.0 M1.7x2.5 : N09-6004-05 M2x2 : N09-6007-05 u163 φ : N09-6051-05 2x5(BLK) : N19-2163-04 1.6 WASHER : N39-2020-46 M2x2 : N09-6108-05 M2x3.5...

  • Page 27: Exploded View (Unit)

    KDC-W4031/W4031Y/W409/W409Y KDC-W431GY/W4531/W4531Y/WF431A EXPLODED VIEW (UNIT) 3 7 63 1515 0 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) L 13942296513 (X16-) (X34-) u163 Depends on the model. Refer to the parts list.

  • Page 28: Parts List

    PROTECTION BAG (280X450X0.03) E3E6 D49-51 B30-1567-05 LED (RED) E : KDC-W4531 E1 : KDC-W4031 E2 : KDC-W409 E3 : KDC-W431GY E6 : KDC-WF431A Indicates safety critical components. E7 : KDC-W4531Y E8 : KDC-W4031Y E9 : KDC-W409Y (E : Europe K : North America...
  • Page 29 C61,62 CK73GB1H102K CHIP C 1000PF E : KDC-W4531 E1 : KDC-W4031 E2 : KDC-W409 E3 : KDC-W431GY E6 : KDC-WF431A Indicates safety critical components. E7 : KDC-W4531Y E8 : KDC-W4031Y E9 : KDC-W409Y (E : Europe K : North America...
  • Page 30 RK73GB2A152J CHIP R 1.5K J 1/10W E : KDC-W4531 E1 : KDC-W4031 E2 : KDC-W409 E3 : KDC-W431GY E6 : KDC-WF431A Indicates safety critical components. E7 : KDC-W4531Y E8 : KDC-W4031Y E9 : KDC-W409Y (E : Europe K : North America...
  • Page 31 C601 CK73GB1E223K CHIP C 0.022UF K E : KDC-W4531 E1 : KDC-W4031 E2 : KDC-W409 E3 : KDC-W431GY E6 : KDC-WF431A Indicates safety critical components. E7 : KDC-W4531Y E8 : KDC-W4031Y E9 : KDC-W409Y (E : Europe K : North America...
  • Page 32 JUMPER WIRE RK73GB2A223J CHIP R J 1/10W E : KDC-W4531 E1 : KDC-W4031 E2 : KDC-W409 E3 : KDC-W431GY E6 : KDC-WF431A Indicates safety critical components. E7 : KDC-W4531Y E8 : KDC-W4031Y E9 : KDC-W409Y (E : Europe K : North America...
  • Page 33 R504 RK73GB2A4R7J CHIP R J 1/10W E : KDC-W4531 E1 : KDC-W4031 E2 : KDC-W409 E3 : KDC-W431GY E6 : KDC-WF431A Indicates safety critical components. E7 : KDC-W4531Y E8 : KDC-W4031Y E9 : KDC-W409Y (E : Europe K : North America...
  • Page 34 0 OHM J 1/16W E9 D254 AM01ZNF DIODE EE1E2 E : KDC-W4531 E1 : KDC-W4031 E2 : KDC-W409 E3 : KDC-W431GY E6 : KDC-WF431A Indicates safety critical components. E7 : KDC-W4531Y E8 : KDC-W4031Y E9 : KDC-W409Y (E : Europe K : North America...
  • Page 35 MACHINE SCREW (M2 3.5) N09-6155-05 SEMS (TAPTITE SCREW) (PT2X6) E : KDC-W4531 E1 : KDC-W4031 E2 : KDC-W409 E3 : KDC-W431GY E6 : KDC-WF431A Indicates safety critical components. E7 : KDC-W4531Y E8 : KDC-W4031Y E9 : KDC-W409Y (E : Europe...

  • Page 36: Mechanism Unit (X92-4850-00)

    X93-2010-00 OPTICAL PICKUP ASSY L 13942296513 u163 E : KDC-W4531 E1 : KDC-W4031 E2 : KDC-W409 E3 : KDC-W431GY E6 : KDC-WF431A Indicates safety critical components. E7 : KDC-W4531Y E8 : KDC-W4031Y E9 : KDC-W409Y (E : Europe K : North America...
  • Page 37 KDC-W4031/W4031Y/W409/W409Y KDC-W431GY/W4531/W4531Y/WF431A 3 7 63 1515 0 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 38: Specifications

    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.

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