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CD RECEIVER
KDC-7027
QQ
3 7 63 1515 0
KDC-7027Y
SERVICE MANUAL
TE
L 13942296513
Escutcheon
(B07-3078-01)
DC cord
(E30-4942-05)
www
.
Panel assy
(A64-3234-01)
Mounting hardware assy
(J21-9823-03)
Antenna adaptor
(T90-0552-05)
x
ao
u163
y
i
2 9
8
CD mechanism extension cord (24PIN) : W05-0935-00
Q Q
3
6 7
1 3
1 5
Screw set
(N99-1734-05)
co
.
TDF PANEL INFORMATION
MODEL
PARTS NO.
KDC-7027
Y33-1790-61
KDC-7027Y
9 4
2 8
© 2004-02 PRINTED IN JAPAN
B53-0129-00 ( N ) 1839
Panel assy
0 5
8
2 9
9 4
2 8
(A64-3253-02)
Plastic cabinet assy
(A02-2731-13)
Lever
(D10-4674-04) x 2
m
PANEL NAME
TDF-M7000
9 9
9 9
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Summary of Contents for Kenwood KDC-7027Y
- Page 1 CD RECEIVER KDC-7027 3 7 63 1515 0 KDC-7027Y SERVICE MANUAL © 2004-02 PRINTED IN JAPAN B53-0129-00 ( N ) 1839 CD mechanism extension cord (24PIN) : W05-0935-00 Panel assy (A64-3234-01) Panel assy L 13942296513 (A64-3253-02) Escutcheon Mounting hardware assy...
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Page 2: Block Diagram
KDC-7027/7027Y BLOCK DIAGRAM 3 7 63 1515 0 AUX IN (X34- ) Q207,208 IC13 PRE OUT TUNER PRE MUTE OP AMP (SUB WOOFER) AUDIO OUT Q203,204 Q303,304 IC12 E-VOL SYSTEM PRE OUT & AM+B PRE MUTE OP AMP E'S+ (REAR) Q205,206 IC11 PRE OUT... - Page 3 KDC-7027/7027Y BLOCK DIAGRAM 3 7 63 1515 0 CD PLAYER UNIT (X32-5550-00,01) MOTHER BOARD PICK-UP D. GND DOUT D. GND DATA 1 CHIP IC MSTOP RF AMP SERVO MRST VREF PROCESSOR MUTE L MUTE R u-COM L-ch VREF R-ch TR COIL A+5V 5V REG 8V SW...
- Page 4 KDC-7027/7027Y COMPONENTS DESCRIPTION 3 7 63 1515 0 SWITCH UNIT (X16-2560-11) Ref No. Application / Functions Operation / Condition / Compatibility DSI LED SW DSI LED blinks when Q1 base level goes H/L KEY Illumination SW (Green) KEY Illumination SW “ON” when the Q2 base level goes H KEY Illumination SW (Red) KEY Illumination SW “ON”...
- Page 5 KDC-7027/7027Y COMPONENTS DESCRIPTION 3 7 63 1515 0 Ref No. Application / Functions Operation / Condition / Compatibility BU detector When Q32 base level goes H, Q32 turned ON ACC detector When Q33 base level goes H, Q33 turned ON Q51,52 Muting driver When base level goes L, muting driver is turned ON...
- Page 6 KDC-7027/7027Y MICROCOMPUTER’S TERMINAL DESCRIPTION 3 7 63 1515 0 Pin No. Pin Name Description / Processing Operation Fig. DIMMER Small lamp detection terminal (ON : L, OFF : H) ANT CONT Antenna control/ Destination select terminal (TUNER ON : H) P ON SW14V, SW5V control terminal (POWER ON : H, POWER OFF : Hi-Z) ILL ON...
- Page 7 KDC-7027/7027Y MICROCOMPUTER’S TERMINAL DESCRIPTION 3 7 63 1515 0 Pin No. Pin Name Description / Processing Operation Fig. PAN DET PANEL, E2PROM detection terminal (With panel : L, Without : H) PHONE PHONE detection terminal (TEL MUTE : 1V or less, NAVI MUTE : 2.5V or more) FPM mechanism position detect/ CD Mechanism detection terminal FPM SW4 (3.75V or more : No mechanism, 1.25V or more : H, Less than 1.25V : L)
- Page 8 KDC-7027/7027Y MICROCOMPUTER’S TERMINAL DESCRIPTION 3 7 63 1515 0 Pin No. Pin Name Description / Processing Operation Not used (N.C.) AVSS3 AVDD3 VDD (BU5V) FBAL Focusing balance adjustment output TBAL Tracking balance adjustment output Focusing error signal input 13,14 Not used (N.C.) Tracking error signal input 16-18 Not used (N.C.)
- Page 9 KDC-7027/7027Y MICROCOMPUTER’S TERMINAL DESCRIPTION 3 7 63 1515 0 Pin No. Pin Name Description / Processing Operation IOSEL Audio DAC data input mode selection terminal (H : External data, L : Internal data) NRST Reset input (L : Reset) BCLK Bit clock output for SRDATA LRCK L/R identification signal output...
- Page 10 KDC-7027/7027Y TEST MODE 3 7 63 1515 0 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.
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Page 11: Test Mode
KDC-7027/7027Y TEST MODE 3 7 63 1515 0 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. - Page 12 KDC-7027/7027Y TEST MODE 3 7 63 1515 0 Security information 3. How to inscription the panel security code 1. Forced Power ON mode (All models) 1. Enter the test mode. 2. Pressing the AM key on all lighting, check the “P-ROM WAIT” Even when the security (Cord) is approved, resetting the display.
- Page 13 KDC-7027/7027Y PC BOARD 3 7 63 1515 0 (COMPONENT SIDE VIEW) (FOIL SIDE VIEW) DISPLAY UNIT DISPLAY UNIT X16-2540-10 (J74-1588-02) X16-2540-10 (J74-1588-02) ILLGND R51 R52 L 13942296513 E2PCLK E2PDATA PANDET DATAS DATAL DGND REMO X16-2540-10 Ref. No. Address X16-2540-10 Ref. No. Address u163 C13 C29...
- Page 14 KDC-7027/7027Y PC BOARD (COMPONENT SIDE VIEW) 3 7 63 1515 0 ELECTRIC UNIT X34-3042-72 (J74-1474-22) C100 C256 R127 C128 C126 R105 C250 R300 L 13942296513 C109 C132 R140 TEST R268 R141 R202 R102 R103 C200 R234 R235 R236 R262 R237 R217 R216 C110...
- Page 15 KDC-7027/7027Y 3 7 63 1515 0 SWITCH UNIT X16-2560-11 (J74-1590-02) C258 C257 R307 R303 R302 C255 R403 Q102 C410 Q104 R407 L 13942296513 R406 C411 R405 R404 X34-3042-72 Ref. No. Address Ref. No. Address Q102 Q104 X16-2560-11 Ref. No. Address u163 Refer to the schematic diagram for the values of resistors and capacitors.
- Page 16 KDC-7027/7027Y PC BOARD (FOIL SIDE VIEW) 3 7 63 1515 0 ELECTRIC UNIT X34-3042-72 (J74-1474-22) C101 C251 R317 Q103 R316 R314 R313 R315 C408 R301 AGND L 13942296513 IC12 R267 R278 R274 R277 IF+B C204 R247 R232 R233 R227 R226 R225 C259 C260...
- Page 17 KDC-7027/7027Y 3 7 63 1515 0 SWITCH UNIT X16-2560-11 (J74-1590-02) R146 SW14V R144 C103 R100 R101 C106 R108 R133 L 13942296513 C130 R142 C135 ILL-GND ILL+B X34-3042-72 Ref. No. Address Ref. No. Address R111 C114 SW5V R109 R110 IC12 D-GND IC13 IC14 PAN5V...
- Page 18 KDC-7027/7027Y PC BOARD (COMPONENT SIDE VIEW) 3 7 63 1515 0 CD PLAYER UNIT X32-5550-00 (J74-1592-12) R202 L 13942296513 R121 R125 R117 R107 R118 R108 R122 R126 X32-5550-00 Ref. No. Address u163 Refer to the schematic diagram for the values of resistors and capacitors.
- Page 19 KDC-7027/7027Y PC BOARD (FOIL SIDE VIEW) 3 7 63 1515 0 CD PLAYER UNIT X32-5550-00 (J74-1592-12) FBAL GCTL TBAL VDET Vref TRCRS TOFS R159 R158 12EJE DATA FCLK IPFLAG SPDL- SLED-/EJECT FLAG A.+8V DQSY SLED+/LOAD A.GND R213 /MUTER L 13942296513 /MUTEL SPDL+ /MRST...
- Page 20 KDC-7027/7027Y 3 7 63 1515 0 to CD MECHANISM ELECTRIC UNIT (X34-304x-xx) EXTERNAL DISPLAY & ∗ ∗ STEERING REMOTE CORD R323 ∗ 2.2K TP15 R310 470 R321 R322 ∗ TP16 2.2K 2.2K R309 470 O-CLK O-DATA ∗ TP17 R311 470 ∗...
- Page 21 KDC-7027/7027Y 3 7 63 1515 0 (X34-304x-xx) C23, D54, R225-227, R252, MODEL UNIT C100 C252 R146 R203 R204 R205 R206 R281 NAME 308-311 253,257 KDC-MPV8025 0-10 X86-3730-11 2200u50 C94-0052-05 KDC-W7027 2-71 YES X86-3732-70 3900u50 C94-5540-05 KDC-MP825 0-11 X86-3730-11 2200u50 C94-0052-05 KDC-7027/Y 2-72 YES YES...
- Page 22 KDC-7027/7027Y 3 7 63 1515 0 : UPD703030GC042 Q1,8,9,13 : 2SA2057 Q23,26 : DTC114YUA or : 1N5393G-M5 : MA4056-M D63-65 : DA204U : TDA7411 Q2,10,14,32-34 : 2SC4081 UN5214 : RB160L-40 : MA4047-M : IMSA-68 : M5237ML Q3,27 : 2SA1576A Q24,25 : 2SB1240 : MA4056(N)-M : MA4068(N)-M...
- Page 23 KDC-7027/7027Y CAUTION : For continued 3 7 63 1515 0 65 : DA204U safety, replace safety criti- : IMSA-6801 cal components only with manufacturer’s recom- SIGNAL LINE mended parts (refer to parts GND LINE 11 12 TOP VIEW list). B LINE 10 8 9 10 Indicates safety critical...
- Page 24 KDC-7027/7027Y 3 7 63 1515 0 DISPLAY UNIT (X16-2540-10) N.C. REMO R67 2.7K R68 2.7K GREEN 5.0V VLCD 8.5V VLCD TP41 2.2K VLCD0 6.7V C4 0.1 VLCD1 5.0V VLCD2 3.3V REMOTE VLCD3 1.7V CONTROL VLCD4 SENSOR TEST R24 47K 3.9K 100K TP20 5.0V...
- Page 25 KDC-7027/7027Y 3 7 63 1515 0 LCD DRIVER & KEY INPUT L 13942296513 LCD DRIVER SWITCH UNIT (X16-2080-10) GND LINE MODEL NAME UNIT No. B LINE KDC-7027/Y PAN-DET KDC-8026 X16-2540-10 KDW-MP825 LC75808W KDC-W7027 LC75878W PNA4S22M Q1,6 DTA114EE : UMX2N Q5,11 2SC4617 u163 MA3062-M...
- Page 26 KDC-7027/7027Y 3 7 63 1515 0 DTA114EE DTA123JK DTC114YUA DTC143TUA UN5111 UN5114 UN5213 UN5214 UN5216 2SA1362 2SA1576A 2SC4617 2SD2114K 2SB1188 2SC4081 UMX2N L 13942296513 DTA114EUA DTA124EUA DTC124EUA DTC144EUA DAN202U DAP202U DA204U KDC-7027/7027Y (2/3) DTA114YUA CAUTION : For continued safety, replace safety TC74HC02AF LB1930M critical components only with manufacturer’s rec-...
- Page 27 KDC-7027/7027Y 3 7 63 1515 0 SWITCH UNIT (X16-2560-xx) ∗ ∗ ∗ ∗ ∗ ∗ ∗ ∗ ∗ ∗ ILLUMINATION SW 3.3K 3.3K 2.2K RESET SCRL NC 2 DSI SW GREEN-SW MENU AUTO SHIFT RED-SW KI4 7 L 13942296513 NC 11 X16-254- VOL-B VOL-A...
- Page 28 KDC-7027/7027Y 3 7 63 1515 0 CD PLAYER UNIT (X32-5550-0x) BU5V BU5V TRCRS 2.5V 0.015 PLLF CSEL 1.5V TEST1 2.5V 5V/0V TEST2 1.5V R157 100K IREF IOSEL DSLF 5.0V BU5V BCLK LRCK 0.9Vp-p SRDATA VREF SUBC REFNV SBCK BLKCK R240 DEMPH D.OUT CD SIGNAL...
- Page 29 KDC-7027/7027Y 3 7 63 1515 0 1000P C2 1 R12 3.6K 3.3K PLLF 1.2V NRFDET 0.022 1.5V IREF 0.2V 2.5V DPU1 (X93-) DSLF 2.4V 4.8V 100K OPTICAL 0.9Vp-p PICKUP 0.9Vp-p 2.5V VREF IOP- 2.5V REFNV 2.5V 2.5V RFENV IOP+ 2.5V VDET 2.5V 3 GND...
- Page 30 KDC-7027/7027Y EXPLODED VIEW (MECHANISM) 3 7 63 1515 0 DPU1 L 13942296513 DFPC1 (X32) φ : N09-6192-05 M1.7x8.5 : N09-6191-05 M1.7x2.5 : N09-6004-05 u163 M2x2 : N09-6193-05 φ : N09-6194-05 2x6(BLK) : N19-2163-04 1.6 WASHER : N39-2020-46 M2x2 * CD MECHANISM OPERATION DESCRIPTION is not in this sevice manual. φ...
- Page 31 KDC-7027/7027Y EXPLODED VIEW (UNIT) 3 7 63 1515 0 M2x1.9 N09-4448-05 FLAT WASHER N19-2176-04 N09-6073-05 RETAINIING RING N24-3015-60 M2x2 N09-6087-15 M2x2.5 N38-2025-46 N09-6088-05 M2.6x5(BLK) N38-2650-45 M2x3(BLK) N09-6089-15 M3x5 N67-3005-46 φ2x5 φ3x5 N09-6093-05 N83-3005-46 φ2x5(BLK) φ3x8 N09-6094-05 N83-3008-46 φ2x4(BLK) M2x3(BLK) N09-6096-05 N86-2004-45 φ3x8 M2x2...
- Page 32 N19-2175-04 FLAT WASHER F07-1122-03 COVER N19-2176-04 FLAT WASHER u163 F07-1123-03 COVER N24-3015-60 E TYPE RETAINING RING F09-1794-04 SHEET N38-2025-46 PAN HEAD MACHIN SCREW F09-1798-04 SHEET N38-2650-45 PAN HEAD MACHIN SCREW E3 : KDC-7027 E4 : KDC-7027Y Indicates safety critical components.
- Page 33 RK73GB2A103J CHIP R J 1/10W RK73GB2A433J CHIP R J 1/10W R2-5 RK73GB2A222J CHIP R 2.2K J 1/10W S70-0901-05 TACT SWITCH RK73GB2A392J CHIP R 3.9K J 1/10W S2-9 S70-0912-05 TACT SWITCH E3 : KDC-7027 E4 : KDC-7027Y Indicates safety critical components.
- Page 34 R202 RK73GB2A104J CHIP R 100K J 1/10W R213 RK73GB2A104J CHIP R 100K J 1/10W L78-0851-05 RESONATOR (16.93MHZ) R218 RK73GB2A473J CHIP R J 1/10W R233 RK73GB2A622J CHIP R 6.2K J 1/10W E3 : KDC-7027 E4 : KDC-7027Y Indicates safety critical components.
- Page 35 0.022UF K N83-3005-46 PAN HEAD TAPTITE SCREW C131 C94-0051-05 ELECTRO 50WV N80-3008-46 PAN HEAD TAPTITE SCREW C132 CK73GB1H102K CHIP C 1000PF N83-3010-46 PAN HEAD TAPTITE SCREW N84-2004-46 PAN HEAD TAPTITE SCREW E3 : KDC-7027 E4 : KDC-7027Y Indicates safety critical components.
- Page 36 J 1/10W R221-224 RK73GB2A102J CHIP R 1.0K J 1/10W R92-1252-05 CHIP R 0 OHM J 1/16W R225-227 RK73GB2A101J CHIP R J 1/10W R228 RK73GB2A102J CHIP R 1.0K J 1/10W 1N5393G-M5 DIODE E3 : KDC-7027 E4 : KDC-7027Y Indicates safety critical components.
- Page 37 WORM DTA124EUA DIGITAL TRANSISTOR D13-2176-04 GEAR D13-2177-04 GEAR UN5112 DIGITAL TRANSISTOR D13-2178-04 GEAR u163 2SA2057 TRANSISTOR 2SC4081 TRANSISTOR D13-2183-04 GEAR 2SB1240 TRANSISTOR D13-2184-04 GEAR DTC114YUA DIGITAL TRANSISTOR D13-2173-03 RACK (GEAR) E3 : KDC-7027 E4 : KDC-7027Y Indicates safety critical components.
- Page 38 L 13942296513 N19-2163-04 FLAT WASHER N39-2020-46 PAN HEAD MACHIN SCREW N09-6196-05 TAPTITE SCREW (S2X3.5PRECISI) T42-1066-04 DC MOTOR ASSY (SPINDLE) T42-1067-04 DC MOTOR ASSY (LOADING) DPU1 X93-2010-00 OPTICAL PICKUP ASSY u163 E3 : KDC-7027 E4 : KDC-7027Y Indicates safety critical components.
- Page 39 KDC-7027/7027Y PARTS LIST 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. 5 = Value 101 = 100pF Multiplier...
- Page 40 KENWOOD ELECTRONICS UK LIMITED P.O. Box 61318, Jebel Ali, Dubai, U.A.E. Kenwood House, Dwight Road, Watford, Herts, WD18 9EB, United Kingdom KENWOOD ELECTRONICS (THAILAND) CO., LTD. KENWOOD ELECTRONICS DEUTSCHLAND GMBH 956 Udom Vidhya Building (Olympia) Rama IV Road, Silom, Bangrak, Bangkok 10500 Thailand Rembrücker-Str.