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CD RECEIVER
KDC-W241AY/W241GY
KDC-W3041A/W3041AY
KDC-W3041G/W3041GY
KDC-W312A/W312AY
KDC-W312G/W312GY/W312SAY
SERVICE MANUAL
Panel assy
KDC-W241AY/W241GY (A64-4292-02)
Panel assy
KDC-W312A/AY (A64-4290-02)
KDC-W312G/GY (A64-4290-02)
KDC-W312SAY (A64-4293-02)
Lever
(D10-4589-04) x2
Escutcheon
(B07-3122-01)
KDC-W241
TDF SPARE-PANEL
MAIN UNIT NAME
KDC-W241AY
KDC-W312
KDC-W241GY
KDC-W3041A
KDC-W3041AY
KDC-W3041G
KDC-W3041GY
KDC-W312A
KDC-W312AY
KDC-W312G
KDC-W312GY
KDC-W312SAY
DC cord
(E30-6427-05)
Mounting hardware assy
(J21-9716-03)
This product complies with the
© 2007-10 PRINTED IN JA PAN
B53-0579-00 ( N ) 223
Panel assy
KDC-W3041xx (A64-4289-02)
TDF PARTS No.
Y33-2840-66
Y33-2840-67
Y33-2840-60
Y33-2840-60
Y33-2840-61
Y33-2840-61
Y33-2840-62
Y33-2840-62
Y33-2840-63
Y33-2840-63
Y33-2840-68
Carrying case
(W01-1691-05)
This product uses Lead Free solder.
RoHS
directive for the European market.
KDC-W3041
TDF NAME
TDF-W241A
TDF-W241G
TDF-W3041A
TDF-W3041A
TDF-W3041G
TDF-W3041G
TDF-W312A
TDF-W312A
TDF-W312G
TDF-W312G
TDF-W312SA
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Table of Contents
Related Manuals for Kenwood KDC-W241AY
Summary of Contents for Kenwood KDC-W241AY
- Page 1 KDC-W3041A/W3041AY KDC-W3041G/W3041GY KDC-W312A/W312AY KDC-W312G/W312GY/W312SAY SERVICE MANUAL © 2007-10 PRINTED IN JA PAN B53-0579-00 ( N ) 223 Panel assy Panel assy KDC-W241AY/W241GY (A64-4292-02) KDC-W3041xx (A64-4289-02) KDC-W3041 KDC-W241 Panel assy KDC-W312A/AY (A64-4290-02) KDC-W312G/GY (A64-4290-02) KDC-W312SAY (A64-4293-02) TDF SPARE-PANEL MAIN UNIT NAME TDF PARTS No.
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Page 2: Block Diagram
KDC-W241AY/W241GY/W3041A/W3041AY/W3041G /W3041GY/W312A/W312AY/W312G/W312GY/W312SAY BLOCK DIAGRAM ELECTRIC UNIT (X34- ) Q901-903 ANT. DME1 DC-DET AM+B R103 TUNER FRONT-END MECHA PHONE PHONE SERVO+B POWER Q101 ACC DET ACC-DET Q103 BU DET BU-DET IC2 or IC3 Q102 DC-CN Q701,702 MUTE SURGE- E-VOL PHONE PRE-OUT... -
Page 3: Components Description
KDC-W241AY/W241GY/W3041A/W3041AY/W3041G /W3041GY/W312A/W312AY/W312G/W312GY/W312SAY COMPONENTS DESCRIPTION ● ELECTRIC UNIT (X34-565x-xx) Ref. No. Application / Function Operation / Condition / Compatibility System µ-COM Controls FM/AM tuner, the changer, CD mechanism, panel, volume and tone. IC2,3 E-VOL Controls the source, volume and tone. Power Supply IC Outputs 5Vx2, 8.1Vx2, 10.2V, P-CON and P-ANT. - Page 4 KDC-W241AY/W241GY/W3041A/W3041AY/W3041G /W3041GY/W312A/W312AY/W312G/W312GY/W312SAY COMPONENTS DESCRIPTION Ref. No. Application / Function Operation / Condition / Compatibility Q10~12 5V–3.3V Level Shift Converts signal from 5V to 3.3V, or from 3.3V to 5V. Inverter Inverts ZDET signal. Lowers signal level by about 1.2V so that Lo level signal that turns the regulator ON/OFF Level Down surely becomes Lo judgment level of the regulator SW.
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Page 5: Microcomputer's Terminal Description
KDC-W241AY/W241GY/W3041A/W3041AY/W3041G /W3041GY/W312A/W312AY/W312G/W312GY/W312SAY MICROCOMPUTER’S TERMINAL DESCRIPTION ● SYSTEM µ-COM: IC1 on X34- (ELECTRIC UNIT) Truth Value Pin No. Pin Name Application Processing Operation Description Table LX DATA M I/O Data to slave unit Pull-down (GND) LX CLK I/O LX-BUS clock 125k~65kHz Not used Output L fi... - Page 6 KDC-W241AY/W241GY/W3041A/W3041AY/W3041G /W3041GY/W312A/W312AY/W312G/W312GY/W312SAY MICROCOMPUTER’S TERMINAL DESCRIPTION Truth Value Pin No. Pin Name Application Processing Operation Description Table PON CD CD mechanism power supply control H: Power ON CD LOEJ I/O CD motor control Refer to the truth value table CD MOTOR...
- Page 7 KDC-W241AY/W241GY/W3041A/W3041AY/W3041G /W3041GY/W312A/W312AY/W312G/W312GY/W312SAY MICROCOMPUTER’S TERMINAL DESCRIPTION Truth Value Pin No. Pin Name Application Processing Operation Description Table TYPE1 Destination switching Refer to the truth value table TYPE2 Destination switching Refer to the truth value table If DC offset is found 20 times in 100ms with condition...
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Page 8: Test Mode
KDC-W241AY/W241GY/W3041A/W3041AY/W3041G /W3041GY/W312A/W312AY/W312G/W312GY/W312SAY TEST MODE ■ Example Description of display Description Disc EJECT times display. MAX 65535 (times) Disc EJECT times display While disc EJECT times is displayed, press and hold for ■5 2 seconds or longer to clear disc EJECT times. - Page 9 KDC-W241AY/W241GY/W3041A/W3041AY/W3041G /W3041GY/W312A/W312AY/W312G/W312GY/W312SAY TEST MODE ■ Special displays when all lights are on in STANDBY source Description of display Description Common All lights ON. All lights ON. Destination terminal “TYPE” indicates system µ-com (IC1) destination, and shows E : 1 condition indication real-time condition of the destination terminal.
- Page 10 KDC-W241AY/W241GY/W3041A/W3041AY/W3041G /W3041GY/W312A/W312AY/W312G/W312GY/W312SAY TEST MODE • CD information display mode Description of display Description Mechanism error log 1 (Latest) 1 : X XX: Error number. “– –” is displayed in case there is no error. CD mecha- Mechanism error log 2 (Latest)
- Page 11 KDC-W241AY/W241GY/W3041A/W3041AY/W3041G /W3041GY/W312A/W312AY/W312G/W312GY/W312SAY TEST MODE ■ Test mode specifi cations in TUNER source Error is found in front-end (A1), etc. if indications below is displayed while in tuner source. Status Display Description Front-end (A1) E2PROM data error Front-end (A1) E2PROM is still the default (unspecifi ed) value.
- Page 12 Bass Level → Middle Level → Treble Level → (SW Level →) System Q → V-Offset → Press the [AUD] and [∗] keys (Remote control) (LPF Sub Woofer)). ( ) means all models other than KDC-W241AY/W241GY. About audio adjustment items (include both Audio Function Mode and Audio Setup Mode)
- Page 13 MUTE terminal is OFF after 2 seconds, not after 15 seconds. While ACC OFF (Back Up ON), Reset (During this time, the CD mechanism does not function.) ■ PREOUT switching (except KDC-W241AY/W241GY) Procedure Note In the STANDBY source, press and hold [TI] key for...
- Page 14 KDC-W241AY/W241GY/W3041A/W3041AY/W3041G /W3041GY/W312A/W312AY/W312G/W312GY/W312SAY TEST MODE Procedure Display Description When DC offset error is detected (when either one of capacitors is leaking, or an improper connection or another error is detected) Press and hold the [3] and [6] keys, and reset-start When DC offset error is not detected (when none of capacitors leak, no improper connection or other error is detected) When improper connection or other DC offset errors are detected.
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Page 15: Rom Data Transfer Processes
KDC-W241AY/W241GY/W3041A/W3041AY/W3041G /W3041GY/W312A/W312AY/W312G/W312GY/W312SAY ROM DATA TRANSFER PROCESSES ■ Operation procedure When replacing front-end (A1) of mother unit (X34-), or when adding or replacing ROM correction (program correction with Operation procedure is different depending on the conditions. ROM IC (IC10)), the following activities are required. - Page 16 KDC-W241AY/W241GY/W3041A/W3041AY/W3041G /W3041GY/W312A/W312AY/W312G/W312GY/W312SAY ROM DATA TRANSFER PROCESSES Turn power on. Install new front-end (A1). Press and hold the [1] and [3] keys and press reset button. No ROM correction or other data status. (Enter the system in the test mode.) Press [B.BOOST] key. (ROM data System enters data transfer mode.)
- Page 17 KDC-W241AY/W241GY/W3041A/W3041AY/W3041G /W3041GY/W312A/W312AY/W312G/W312GY/W312SAY ROM DATA TRANSFER PROCESSES 4. In case of applying a new ROM correction when front-end Turn power on. (A1) is replaced (There is ROM correction data.) Press and hold the [1] and [3] keys, press reset button. (Enter 5.
- Page 18 KDC-W241AY/W241GY/W3041A/W3041AY/W3041G /W3041GY/W312A/W312AY/W312G/W312GY/W312SAY ROM DATA TRANSFER PROCESSES Press key. (Exit ROM data transfer mode.) Turn power on. Turn power off. Press and hold the [1] and [3] keys press reset button. (Enter the system in the test mode.) Remove front-end (A1).
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Page 19: Switch Unit
KDC-W241AY/W241GY/W3041A/W3041AY/W3041G /W3041GY/W312A/W312AY/W312G/W312GY/W312SAY PC BOARD (COMPONENT SIDE VIEW) (FOIL SIDE VIEW) SWITCH UNIT SWITCH UNIT X16-617x-xx (J76-0455-02) X16-617x-xx (J76-0455-02) CP11 CP12 PAN5V X16-617x-xx X16-617x-xx Ref. No. Address Ref. No. Address Refer to the sche- matic diagram for the values of resis-... -
Page 20: Electric Unit
KDC-W241AY/W241GY/W3041A/W3041AY/W3041G /W3041GY/W312A/W312AY/W312G/W312GY/W312SAY PC BOARD (FOIL SIDE VIEW) ELECTRIC UNIT X34-565x-xx (J76-0513-12) W807 W100 W806 W805 R101 W102 W803 R102 W902 R910 R908 D103 R106 Q901 R905 R903 R801 R110 R107 R901 Q102 D105 D106 W812 C102 D901 D803 DC-DET R108... - Page 21 KDC-W241AY/W241GY/W3041A/W3041AY/W3041G /W3041GY/W312A/W312AY/W312G/W312GY/W312SAY C703 2 3 4 8 12 11 13 R604 X34-565x-xx Q701 Q702 Ref. No. Address C603 R710 R712 R803 C706 Q704 Q703 C705 W701 R492 R791 Q401 R793 R493 R491 Q101 R973 Q102 Q103 IC10 Q104 R503 Q105...
- Page 22 KDC-W241AY/W241GY/W3041A/W3041AY/W3041G /W3041GY/W312A/W312AY/W312G/W312GY/W312SAY PC BOARD (COMPONENT SIDE VIEW) CD PLAYER UNIT X32-5970-02 (J76-0443-02) R219 C103 R220 C100 R223 Refer to the schematic diagram for the values of resistors and capacitors.
- Page 23 KDC-W241AY/W241GY/W3041A/W3041AY/W3041G /W3041GY/W312A/W312AY/W312G/W312GY/W312SAY PC BOARD (FOIL SIDE VIEW) CD PLAYER UNIT X32-5970-02 (J76-0443-02) FCS+ FCS- AGND C102 R248 R240 DGND D3.3V IC11 R243 IOP- VREF 8EJE SW R232 AD3.3V IOP+ AGCI SPDL+ SPDL- SBAD A3.3V C101 DGND GPIN ZDET R233 /CCE...
- Page 24 KDC-W241AY/W241GY/W3041A/W3041AY/W3041G /W3041GY/W312A/W312AY/W312G/W312GY/W312SAY ELECTRIC UNIT (X34-5xxx-xx) IC6 VOLTAGE IC6 VOLTAGE E-TDA7386 TB2904HQ R606 1K REQ S TP98 R609 100 MUTE TP95 7.3V 7.0V R607 1K DATA S TP97 4.6V 0.5V R605 100 TP99 7.3V 7.0V R608 100 DATA M TP96 14.4V 14.4V...
- Page 25 KDC-W241AY/W241GY/W3041A/W3041AY/W3041G /W3041GY/W312A/W312AY/W312G/W312GY/W312SAY TP315 C819 C820 R807 4.3K Q801 C807 DC OFFSET TP316 TP903 Q903 R904 TP902 R803 D802 Q902 TP432 Q901 5.0V R598 5.0V R599 RESET IC Q901 Q902,903 POWER IC DC OFFSET DC OFFSET R201 DET SW LX DATA M...
- Page 26 KDC-W241AY/W241GY/W3041A/W3041AY/W3041G /W3041GY/W312A/W312AY/W312G/W312GY/W312SAY DC CN F1 10A TP16 (F52-0023-05) FUSE ELECTRIC 2008-MODEL BU5V-1 BU5V-1 BU5V-2 3300u16 R229 100K 5.0V 5.0V P ANT D104 TP502 RESET IC BU DET 2007-MODEL LX DATA M P CON D102 0 or 1.6 or 2.5 or...
- Page 27 KDC-W241AY/W241GY/W3041A/W3041AY/W3041G /W3041GY/W312A/W312AY/W312G/W312GY/W312SAY ELECTRIC UNIT (X34-5xxx-xx) C310, C703, Q13, R201,202, R211,303-305, DESTI- MODEL NAME UNIT No. C805 D802 Q801 NATION 219,220,229 312,967 TB2904HQ KDC-241SA/SG E4/E5 X34-5652-70 220u16 10u35 30302MAPA84FP KDC-W241AY/GY E8/E9 X34-5652-71 220u16 10u35 30622MEPB44FP KKZ09Z KDC-W3041A/G E/E1 X34-5652-72 YES 220u16...
- Page 28 KDC-W241AY/W241GY/W3041A/W3041AY/W3041G /W3041GY/W312A/W312AY/W312G/W312GY/W312SAY ANODE CONNECTION 3GA,3GB 1GA,1GB NAME (3G-1G) (1G) col (Downside) SWITCH UNIT (X16-617x-xx) Upside Downside col (Upside) REMOTE CONTROL SENSOR R78 1K 11.3V TP41 TP42 TP43 TP44 TP45 TP31 ILL D GND TP30 11.3V PAN5V TP29 VFD DRIVER LED+B...
- Page 29 KDC-W241AY/W241GY/W3041A/W3041AY/W3041G /W3041GY/W312A/W312AY/W312G/W312GY/W312SAY DTC114YUA 2SA1576A SWITCH UNIT (X16-617x-xx) DESTI- UNIT D10,11, R61, MODEL NAME D1,2,9,23 D3-8 D12,19 13-18,21 NATION E232/S J/J1 0-01 B30-1781-05 B30-1782-05 B30-1782-05 KDC-MP208 0-11 B30-1779-05 B30-1779-05 B30-1566-05 KDC-MP238 0-10 B30-1781-05 B30-1779-05 B30-1566-05 KDC-MP238CR 0-11 B30-1779-05 B30-1779-05 B30-1566-05 2SC4081...
- Page 30 KDC-W241AY/W241GY/W3041A/W3041AY/W3041G /W3041GY/W312A/W312AY/W312G/W312GY/W312SAY CD PLAYER UNIT (X32-597x-xx) 3.7V 3.8V 3.5V 3.7V 4ch BTL 1.5V DRIVER SLD+ SPDL+ SLED IN SLD+ SPD+ SPDL+ /EJECT A3.3V REG. SLD- SPDL- SLED OUT AD3.3V SLD- SPD- SPDL- /LOAD 7.5V 7.5V VCC2 VCC1 R251 5.0V 0.01 1.2V...
- Page 31 KDC-W241AY/W241GY/W3041A/W3041AY/W3041G /W3041GY/W312A/W312AY/W312G/W312GY/W312SAY 3.3V R233 16.934MHz 2200P FCS- 1.9V TRK- TRK+ 2200P FCS+ DPU1 0.033 0.033 (X92- ) 2.1V OPTICAL 87.7kHz 1.8V 2.5V PICKUP 16.934MHz 1.5V 2.1V 1.7V 88.8kHz 1.7V DVSS3 1 3.2V 1.4MHz 19.8kHz TNPC 16.934MHz 3.0V 1.8V 1.7V 1.8V 3.5V...
- Page 32 KDC-W241AY/W241GY/W3041A/W3041AY/W3041G /W3041GY/W312A/W312AY/W312G/W312GY/W312SAY EXPLODED VIEW (CD MECHANISM) DPU1 DFPC1 (X32) φ : N09-4460-15 M1.6x6.0 : N09-6317-05 M1.7x2.5 : N09-6004-15 M2x2 : N09-6007-15 φ 2x5(BLK) : N09-6051-15 1.6 WASHER : N19-2163-04 M2x2 : N39-2020-48 φ 2x3.5 : N09-6108-15 φ : N09-6155-15 Parts with the exploded numbers larger than 700 are not supplied.
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Page 33: Exploded View (Unit)
KDC-W241AY/W241GY/W3041A/W3041AY/W3041G /W3041GY/W312A/W312AY/W312G/W312GY/W312SAY EXPLODED VIEW (UNIT) DME1 : N24-3015-48 : N80-2006-48 : N80-2012-43 : N83-3005-48 : N86-2610-48 : N80-3010-48 : N83-3005-48 : N83-3020-48 : N86-2606-48 (X34) (X34) (X16-) (X34-) Parts with the exploded numbers larger than 700 are not supplied. -
Page 34: Parts List
E : KDC-W3041A E1 : KDC-W3041G E2 : KDC-W312A E3 : KDC-312G E4 : KDC-W3041AY E5 : KDC-W3041GY Indicates safety critical com po nents. E6 : KDC-W312AY E7 : KDC-W312GY E8 : KDC-W241AY E9 : KDC-W241GY F : KDC-W312SAY (E : Europe F : Europe) - Page 35 E : KDC-W3041A E1 : KDC-W3041G E2 : KDC-W312A E3 : KDC-312G E4 : KDC-W3041AY E5 : KDC-W3041GY Indicates safety critical com po nents. E6 : KDC-W312AY E7 : KDC-W312GY E8 : KDC-W241AY E9 : KDC-W241GY F : KDC-W312SAY (E : Europe F : Europe)
- Page 36 E : KDC-W3041A E1 : KDC-W3041G E2 : KDC-W312A E3 : KDC-312G E4 : KDC-W3041AY E5 : KDC-W3041GY Indicates safety critical com po nents. E6 : KDC-W312AY E7 : KDC-W312GY E8 : KDC-W241AY E9 : KDC-W241GY F : KDC-W312SAY (E : Europe F : Europe)
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Page 37: Electric Unit (X34-565X-Xx)
E : KDC-W3041A E1 : KDC-W3041G E2 : KDC-W312A E3 : KDC-312G E4 : KDC-W3041AY E5 : KDC-W3041GY Indicates safety critical com po nents. E6 : KDC-W312AY E7 : KDC-W312GY E8 : KDC-W241AY E9 : KDC-W241GY F : KDC-W312SAY (E : Europe F : Europe) - Page 38 E : KDC-W3041A E1 : KDC-W3041G E2 : KDC-W312A E3 : KDC-312G E4 : KDC-W3041AY E5 : KDC-W3041GY Indicates safety critical com po nents. E6 : KDC-W312AY E7 : KDC-W312GY E8 : KDC-W241AY E9 : KDC-W241GY F : KDC-W312SAY (E : Europe F : Europe)
- Page 39 E : KDC-W3041A E1 : KDC-W3041G E2 : KDC-W312A E3 : KDC-312G E4 : KDC-W3041AY E5 : KDC-W3041GY Indicates safety critical com po nents. E6 : KDC-W312AY E7 : KDC-W312GY E8 : KDC-W241AY E9 : KDC-W241GY F : KDC-W312SAY (E : Europe F : Europe)
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Page 40: Specifications
Frequency response (±1dB) ......20Hz~20kHz Total harmonic distortion (1kHz) ........0.01% Signal to Noise ratio (1kHz) ......... 105dB KENWOOD follows a policy of continuous advancements Dynamic range .............. 93dB in development. For this reason specifications may be MP3 decode ..Compliant with MPEG-1/2 Audio Layer-3 changed without notice.