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Instruction Manual
CD RECEIVER
KDC-2031SA/SAY
QQ
3 7 63 1515 0
KDC-2031SG/SGY
SERVICE MANUAL
TE
L 13942296513
LEVER
(D10-4589-04) x2
ANTENNA ADAPTOR
(T90-0523-05)
www
.
PANEL ASSY
KDC-2031SA/SAY/SG/SGY (A64-3461-02)
VOL
AUD
SET UP
FF
MONO
DC CORD
(E30-6413-05)
ESCUTCHEON
(B07-3122-01)
x
ao
u163
y
i
2 9
8
SPARE TDF PANEL
MAIN UNIT NAME
KDC-2031SA/SAY
KDC-2031SG/SGY
Q Q
SCAN
RDM
REP
3
6 7
1 3
1 5
PLASTIC CABINET ASSY
(A02-2736-03)
co
.
9 4
2 8
© 2004-12 PRINTED IN JAPAN
B53-0234-00 ( N ) 1813
TDF PARTS No.
TDF NAME
Y33-2140-66
TDF-2031SA
Y33-2140-67
TDF-2031SG
/AUTO
AME
0 5
8
2 9
9 4
2 8
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-2031SA
- Page 1 B53-0234-00 ( N ) 1813 SPARE TDF PANEL MAIN UNIT NAME TDF PARTS No. TDF NAME KDC-2031SA/SAY Y33-2140-66 TDF-2031SA KDC-2031SG/SGY Y33-2140-67 TDF-2031SG PANEL ASSY KDC-2031SA/SAY/SG/SGY (A64-3461-02) /AUTO SET UP SCAN MONO L 13942296513 DC CORD MOUNTING HARDWARE ASSY LEVER PLASTIC CABINET ASSY (E30-6413-05) (J21-9716-03)
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Page 2: Block Diagram
KDC-2031SA/2031SAY KDC-2031SG/2031SGY 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 KDC-2031SA/2031SAY KDC-2031SG/2031SGY COMPONENTS DESCRIPTION 3 7 63 1515 0 ELECTRIC UNIT (X34-3412-7x) 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 KDC-2031SA/2031SAY KDC-2031SG/2031SGY COMPONENTS DESCRIPTION 3 7 63 1515 0 Ref. No. Application / Function Operation / Condition Q4 SW “ON” When P. ON signal goes “L” (SW+5V is ON). ANALOG +8V SW “ON” When P. ON signal goes “L” (Q3 is ON).
- Page 5 KDC-2031SA/2031SAY KDC-2031SG/2031SGY MICROCOMPUTER’S TERMINAL DESCRIPTION 3 7 63 1515 0 Active Pin No. Pin Name Application Processing Operation (H/L) 22~24 AUD SDA Volume + tuner I2C data input and output AUD SCL Volume + tuner I2C clock input and output...
- Page 6 Tuner S-meter input TRUTH TABLE • TUN TYPE TYPE 1 TYPE 2 General models commercially-designated as pure KENWOOD brand (Initial value) Initial value setting • POWER SUPPLY IC (IC3) CONTROL • CD MECHA CONTROL OPERATION SEL1 (Pin No. 11) CD LOEJ...
- Page 7 KDC-2031SA/2031SAY KDC-2031SG/2031SGY MICROCOMPUTER’S TERMINAL DESCRIPTION 3 7 63 1515 0 CD MECHANISM µ-COM : IC2 on X32- (CD PLAYER UNIT) Active Pin No. Pin Name Application Processing Operation (H/L) Traverse drive output (PWM output). Spindle motor drive output (PWM output).
- Page 8 KDC-2031SA/2031SAY KDC-2031SG/2031SGY MICROCOMPUTER’S TERMINAL DESCRIPTION 3 7 63 1515 0 Active Pin No. Pin Name Application Processing Operation (H/L) 8EJE SW 12EJE/SDET SW Loading-end detection / H : Loading-end detection LOE/LIM SW Pick-up inner circumference detection. L : Pick-up inner circumference detection 45~49 No connection.
- Page 9 KDC-2031SA/2031SAY KDC-2031SG/2031SGY 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 10 KDC-2031SA/2031SAY KDC-2031SG/2031SGY SPECIAL MODE ADJUSTMENT 3 7 63 1515 0 After replacing the following parts, adjust as follows. DC offset error detection confirmation mode Confirmation mode : While depressing PRESET “3” key and PRESET “6” key REPLACED PARTS ADJUSTMENT ITEMS simultaneously, press on the “RESET”...
- Page 11 KDC-2031SA/2031SAY KDC-2031SG/2031SGY PC BOARD 3 7 63 1515 0 (COMPONENT SIDE VIEW) (FOIL SIDE VIEW) SWITCH UNIT X16-294x-xx (J76-0055-02) SWITCH UNIT X16-294x-xx (J76-0055-02) PAN-SW5V FL-SW9.8V LED+B PAN5V L 13942296513 FL+B X16-294x-xx DATAS Ref. No. Address REMO RTRY-CCW TDF-DET ESD-GND Refer to the schematic dia- gram for the values of resis- tors and capacitors.
- Page 12 KDC-2031SA/2031SAY KDC-2031SG/2031SGY PC BOARD (FOIL SIDE VIEW) 3 7 63 1515 0 ELECTRIC UNIT X34-3412-7x (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 13 KDC-2031SA/2031SAY KDC-2031SG/2031SGY 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 14 KDC-2031SA/2031SAY KDC-2031SG/2031SGY PC BOARD (COMPONENT SIDE VIEW) 3 7 63 1515 0 CD PLAYER UNIT X32-5750-00 (J76-0059-02) L 13942296513 X32-5750-00 Ref. No. Address u163 Refer to the schematic diagram for the values of resistors and capacitors.
- Page 15 KDC-2031SA/2031SAY KDC-2031SG/2031SGY PC BOARD (FOIL SIDE VIEW) 3 7 63 1515 0 CD PLAYER UNIT X32-5750-00 (J76-0059-02) SLED DRVMUTE SPDL LOE/LIM A.GND A.+8V C100 R100 /MRST /MSTOP SLED OUT /MUTEL /LOAD L 13942296513 /MUTER SLED IN /EJECT BU.5V Vref 2...
- Page 16 KDC-2031SA/2031SAY KDC-2031SG/2031SGY 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 17 KDC-2031SA/2031SAY KDC-2031SG/2031SGY 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 18 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-2031SA/2031SAY/2031SG/2031SGY (1/2) u163 DTA124EUA UMC2N DAN202U DA204U DTC124EUA DTA114YUA X34-3412-7x (3/4)
- Page 19 KDC-2031SA/2031SAY KDC-2031SG/2031SGY 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 20 KDC-2031SA/2031SAY KDC-2031SG/2031SGY 3 7 63 1515 0 SWITCH UNIT (X16-294x-xx) (3G) (1GB) (2G) R80 33 R82 33 ∗ REMOTE TP32 SW5V SENSOR (7-SEGMENT) L 13942296513 KEY MATRIX DISP Q or EQ EJECT PANEL TP31 ILL D GND TP30 PAN5V 11.25V...
- Page 21 KDC-2031SA/2031SAY KDC-2031SG/2031SGY 3 7 63 1515 0 CAUTION : For continued safety, re- ANODE CONNECTION place safety critical components only 2G 1GA,1GB NAME with manufacturer’s recommended parts — (refer to parts list). — Indicates safety critical components. — — To reduce the risk of electric shock, —...
- Page 22 KDC-2031SA/2031SAY KDC-2031SG/2031SGY 3 7 63 1515 0 CD PLAYER UNIT (X32-5750-00) RFENV D.GND C34 0.1 4.80V C32 0.1 BU+5V 470P 470P L.P.F. 3.10V 1.25V 2.40V 3.10V 3.10V 1.70V IREF R100 C100 8EJE SW 3.10V 1000P PLLF2 12EJE/SDET SW PLLF 3.84V 4.7K...
- Page 23 KDC-2031SA/2031SAY KDC-2031SG/2031SGY 3 7 63 1515 0 CAUTION : For continued safety, replace safety critical compo- nents only with manufacturer’s IOP+ IOP- recommended parts (refer to R7 3.6K parts list). Indicates safety critical com- ponents. To reduce the risk of 3.3K...
- Page 24 KDC-2031SA/2031SAY KDC-2031SG/2031SGY 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 25 KDC-2031SA/2031SAY KDC-2031SG/2031SGY 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 Parts with the exploded numbers larger than 700 are not supplied.
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Page 26: Parts List
RK73GB2A221J CHIP R J 1/10W H25-1111-04 PROTECTION BAG (280X450X0.03) E4E5 RK73GB2A472J CHIP R 4.7K J 1/10W H54-3308-03 ITEM CARTON CASE (KDC-2031SA) E4 RK73GB2A4R7J CHIP R J 1/10W RK73GB2A203J CHIP R J 1/10W H54-3309-03 ITEM CARTON CASE (KDC-2031SG) E5 H54-3317-03 ITEM CARTON CASE (KDC-2031SAY) E7... - Page 27 2SC4081 TRANSISTOR RK73GB2A362J CHIP R 3.6K J 1/10W 2SA1576A TRANSISTOR E4 : KDC-2031SA E5 : KDC-2031SG E6 : KDC-2031SGY E7 : KDC-2031SAY Indicates safety critical components. (E : Europe K : North America M : Other Areas W : Without Europe)
- Page 28 JUMPER WIRE C527 CC73GCH1H102J CHIP C 1000PF W300-302 E31-0001-00 JUMPER WIRE E4 : KDC-2031SA E5 : KDC-2031SG E6 : KDC-2031SGY E7 : KDC-2031SAY Indicates safety critical components. (E : Europe K : North America M : Other Areas W : Without Europe)
- Page 29 J 1/10W RD14BB2C333J J 1/6W R360 RK73GB2A222J CHIP R 2.2K J 1/10W E4 : KDC-2031SA E5 : KDC-2031SG E6 : KDC-2031SGY E7 : KDC-2031SAY Indicates safety critical components. (E : Europe K : North America M : Other Areas W : Without Europe)
- Page 30 ZENER DIODE W61-63 R92-2053-05 CHIP R 0 OHM J 1/8W D203 1SS133 DIODE E4 : KDC-2031SA E5 : KDC-2031SG E6 : KDC-2031SGY E7 : KDC-2031SAY Indicates safety critical components. (E : Europe K : North America M : Other Areas...
- Page 31 D10-4595-04 u163 D10-4596-24 D13-2151-04 GEAR D13-2152-04 GEAR D13-2153-04 GEAR E4 : KDC-2031SA E5 : KDC-2031SG E6 : KDC-2031SGY E7 : KDC-2031SAY Indicates safety critical components. (E : Europe K : North America M : Other Areas W : Without Europe)
- Page 32 S/N Ratio ............93dB (1kHz) Dynamic Range ............. 93dB Channel Separation ............85dB 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.