Kenwood KMD-44 Service Manual Download Page 1

Page: 1 / 24

MD RECEIVER

KMD-44

SERVICE MANUAL

MDLP

LOUD

SCAN

ROM

REP

M.ROM

D.SCN

AUTO AME CLK

NAME.S

DISC

45Wx4

KMD-44

PWR

SRC

DISC

OFF

AUD

CD MD-CHANGER CONTROL

MD RECEIVER

Plastic cabinet assy
(A02-1486-13)

Screw set
(N99-1610-15)

DC cord
(E30-4783-05)

Stay
(J54-0606-04)

Screw set
(N99-1632-05)

Lever
(D10-3031-04)x2

Mounting hardware assy
(J21-9491-13)

Front glass
(B10-4030-01)

Escutcheon
(B07-2181-02)

Panel assy
(A64-2261-02)

Summary of Contents for KMD-44

Page 1: ...AME S DISC MENU 45Wx4 KMD 44 PWR SRC DISC OFF AM FM AUD CD MD CHANGER CONTROL MD RECEIVER Plastic cabinet assy A02 1486 13 Screw set N99 1610 15 DC cord E30 4783 05 Stay J54 0606 04 Screw set N99 1632 05 Lever D10 3031 04 x2 Mounting hardware assy J21 9491 13 Front glass B10 4030 01 Escutcheon B07 2181 02 Panel assy A64 2261 02 ...

Page 2: ... AUDIO IF1 B S METER SD SDA CLK REQ C MUTE DATA H DATA C REQ H AUDIO SW 5V 8V P ANT P CON TEL MUTE ACC BACK UP PRE OUT SP OUT AUDIO BU 14V 3529mV 3529mV 588mV 1819mV 3795mV 3795mV 380mV 1200mV 1200mV 1200mV 724mV 1200mV 170mV 166mV 1692mV J K 547mV J K BU 5V Q1 2 Q10 Q11 15 IC6 IC3 Q7 9 IC1 IC8 IC1 IC2 IC2 Q25 28 IC4 Q17 18 AVR SW REG S 5 0V ILLUM B AVR AVR AUDIO 8V u COM MD MECHA P ANT P CON ACC ...

Page 3: ... VC PD LD STBY TO CH5 OP S B SW 5V S5V 3 3V 2 5V 6 5 BU 5V 1 2V rms 1KHz 0dB SW 5V TO SERVO DRIVER BU 5V ILCC LDON RF AMP RF AGC EQ RF AMP CXA2523AR BPF P P PEAK BOTTOM ABCD AMP IV AMP IV AMP CVB AMP TEMP VICCONV ERROR AMP FOCUS AT AMP BPF TRACKING ERROR AMP SERIAL PARALLEL DECODER BALANCE E F FILTER PLL DECODER ACIRC EFM MEMORY RESISTANT SHOCK CONTROLLER DYNAMIC RAM ATRAC3 ATRAC DECODER DIGITAL F...

Page 4: ...Q9 2SD1760 Q10 2SA1037K SW 5V ON when the base goes Lo Q13 2SB1277 Q R Q16 DTC114YK or UN2214 P CON SW Q13 is turned ON when Q16 s base goes Hi or KRC107S Q14 2SA1037K Protect Q13 by turning ON when P CON output is grounded Q15 DTA124EK or UN2112 P CON protection Prevents Q14 turning ON during start up after power ON or KRA103S Q17 2SC2412K or 2SD601A BU detection ON when the base goes Hi during B...

Page 5: ...nalog post filter IC3 2 5V regulator Power supply for 2 5V system of IC2 IC4 5chBTL servo driver Various actuator Motor drive Disk loading Eject motor driver 3 3V regulatore IC5 low pass filter 3 times active filter IC6 3 3v regulator D A audio B IC7 CMOS buffer 3 3V 5 0V level shift IC8 Mechanism micon Servo control Memory control System control Various interfaces IC9 E2PROM Servo coefficient Ser...

Page 6: ...IC2 SDA I O Data input output with the E VOL IC 24 MUTE O Mute control output Hi Mute ON Lo Mute OFF 25 SW5 O SW 5V control Lo POWER ON mode or during MD Loading Eject 26 M CLK I O Clock input output with the MI COM of MD mecha 27 M DATA I O Data input output with the MI COM of MD mecha 28 IC3 SDA I O Data input output with the F E tuner 29 CHCON O Changer control Lo Standby Hi during the movement...

Page 7: ...equest to the MI COM of MD mecha Lo Stop Hi during the movement 72 BEEP O Beep sound output 73 75 N C O Not used 76 LOE SW I MD loading complete detection SW input terminal Lo MD loading completion 77 EJECT O MD mecha Loading Eject switching output terminal Standby EJECT LOAD Lo Lo Eject EJECT LOAD Hi Lo 78 LOAD O MD mecha Loading Eject switching output terminal Loading EJECT LOAD Lo Hi Brake EJEC...

Page 8: ...e Adjustment Procedure Note During the adjustment procedure be sure to turn off the power supply to the set 1 Pull up the IC11 50pin LADJ1 Check Land L1 of the X33 Unit to BU5V Check Land BU 5 2 Pull out the Check Land ARF of X33 Unit and Check Land SAG Servo GND using wires so these can be monitored with an oscilloscope 3 Turn the power on the set while resetting the set Adjustment should be cond...

Page 9: ...reflection E2PROM write Adjustment Parameter Adjustment condition Restart after setting LADJ1 terminal to high Adjustment Key Track UP DOWN key Confirmation Key Manual UP DOWN key Depending on a set press on adjustment key Notes 1 After adjusting for a media it must be always confirmed When another media is adjusted without confirming it E2PROM data will be damaged 2 When focus bias values are set...

Page 10: ...7 C30 C5 C14 C16 C86 C84 C48 C92 C20 C6 C42 C8 W46 W45 W44 W1 W35 W34 W27 W32 R145 W31 W30 C51 W29 L8 W28 W26 W40 W2 W25 L4 W42 W24 C37 C76 L6 R19 R17 W20 W21 W37 W36 W33 W43 W50 W22 W23 W39 C91 C90 C93 C36 C53 C3 C35 L11 W38 W41 C52 C54 L1 W51 B E B E 9 1 8 16 14 1 28 15 80 51 31 1 100 81 50 30 14 1 7 8 1 5 O G I 4 3 2 1 2 1 15 14 2 1 21 20 24 1 9 1 5 2 6 10 3 7 11 13 4 8 12 25 1 24 2 1 8 16 9 B ...

Page 11: ...45 R102 R104 R103 R105 C48 W43 C47 RL R144 R142 R111 C51 C53 E B E B FL C54 C52 RR FR W42 R9 W34 W35 W37 W36 W38 W33 W31 W32 W30 W29 W28 W40 W39 C14 R17 1 R19 7 C16 C30 15 14 28 C42 C32 1 CE B SCL SDA E REMO INH DATAL CLK DATAS C34 CP3 R72 R73 R87 IC2SCK IC2SDA L8 C27 C31 L R82 R R86 14 R91 5V 8 R110 R85 R109 100 1 R67 R68 W3 C33 R69 2 1 81 80 R65 R66 R64 CP1 20 21 C19 R22 R28 W24 W25 W26 R25 R16 ...

Page 12: ...4 5 IC8 IC7 IC6 Q7 IC9 Q6 Q5 Q4 CN1 S2 S1 S3 S4 X33 3120 00 J74 1202 02 36 25 R18 R31 R28 R27 C58 C54 C60 R48 C59 18 R50 19 R47 C56 R52 R54 C55 R53 R49 R51 C57 R56 R55 21 R61 1 R40 36 R57 R41 R59 R60 C61 CP2 R30 C37 R29 C32 L3 C33 R7 R9 C29 C31 C30 B C9 E 37 R5 48 C1 B E C7 24 R10 R8 13 C19 R11 12 1 C6 C5 R6 C13 C10 C11 R68 C70 C68 C71 C72 R75 R71 R73 1 R69 8 C69 C73 1 C66 C67 C65 5 R65 R67 R66 4 ...

Page 13: ... STBY R39 47K 10 11 R109 22K CP2 100 R62 10K R60 1K 1K 10K R82 22P 75 74 73 CP1 1K 71 R139 100K CP3 1K 21 100K R92 0 1 R40 47K R63 R61 1 2W Q3 4 R48 100K R72 20 R13 R16 2 2K R69 R77 R79 47K R80 47K R78 R73 1K 0 01 C94 C2 1000P 1K R190 R191 3 3K W2 4 7K 53 R9 7 5K C13 0 01 R10 22K 1K R12 R11 47K R138 45 85 84 RST 23 C27 0 01 81 19 68 68 18 55 0 21 2 71 KMD 673R E KMD 673R M NO YES UNIT No MODEL NAM...

Page 14: ...L FL 430 1u50 C49 13 76 W5 W4 W7 W6 R111 22K C35 1u50 C37 100u10 C36 1u50 RF GND L9 52mH AUDIO OUT 19 150 R145 R125 47 R124 470 R123 470 R122 1K R121 100 R120 100 R119 1K R118 1K 100u10 C76 13 24 29 R110 100 C50 0 01 RL RR 2 4 1 5 3 6 7 8 11 12 13 10 9 1K R142 1K R144 97 2 7K 4 7K L2 4 7uH C80 0 01 0 01 C82 0 01 C71 C79 R126 470 81 11 GND 6 8 ARI FIL OUT 7 9 10 FSEL EXTRES TM 3 VREF 5 MPX OSEL 4 2...

Page 15: ...49 48 50 S50 49 50 42 70 COM1 59 58 57 56 60 65 64 63 KS6 76 1K R10 KEY N C RED GREEN VLCD 87 VLCD0 88 VLCD1 89 C5 0 22 C4 0 22 4 7K R15 R16 R17 VLCD4 4 7K 4 7K 4 7K R3 R2 R14 2 2 84 85 82 83 0 01 680P 64 60 63 62 61 67 66 65 68 70 69 92 750 R28 3 2 1 4 7K 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51...

Page 16: ... R41 4 7K 9 1K R59 36K R60 36K 32 33 R77 4 7K 0 022 R53 113 76 77 112 111 L3 R15 R2 C7 16 56 0 022 C58 4 7K 4 7K R46 4 7K R40 1K R84 Q3 R58 R55 82 C15 4 7 C19 68P C69 16K R73 2 2K R65 R66 2 2K 0 1 C65 0 1 C66 R72 33K 68P 16K R74 0 1 C38 C39 0 1 10 9 11 C40 0 01 16 15 C41 0 1 C42 1 C43 1 0 1 C49 35 65 64 C26 0 1 72 73 71 76 C47 0 1 C25 0 1 111 114 113 112 0 1 C24 C22 0 1 83 81 82 80 100 R21 680 R33...

Page 17: ... D G G B B B B 735 736 B B B G C C C C H 770 B B A B C D E F G H φ2x3 5 M2x2 BLK M2x4 M1 7x2 5 M1 4x2 WASHERφ4 WASHERφ4 M2x3 5 N09 4349 05 N09 4236 05 N09 4319 05 N09 4269 05 N09 4233 05 N19 2021 04 N19 2127 14 N09 4126 05 44 45 45 6 31 44 32 49 1 42 41 14 5 23 23 24 22 25 21 61 M3 11 47 13 26 3 15 PU1 34 M2 M1 47 33 61 62 2 34 48 63 43 12 47 33 51 7 ...

Page 18: ...6 N80 2006 46 N80 2008 45 N30 2608 45 N35 3010 46 N83 3006 46 N38 2020 46 φ3x5 φ3x8 φ2 6x6 φ3x20 φ2x6 φ2x8 BLK M2 6x8 BLK M3x10 φ3x6 M2x2 201 251 202 777 779 776 778 755 756 727 725 701 735 732 732 220x2 203 706 205 231 237 222 229 223 221 230 ME1 236 PA1 224 243 211 709 245 240 244 210 242 228 241 207 Q 5 X25 IC4 X25 Q 2 X25 301 X13 J 2 X25 J 3 X25 A 1 X25 J 4 X25 L11 X25 WH1 X25 303 X13 304 X13 ...

Page 19: ...30 2608 45 PAN HEAD MACHINE SCREW K 2D N38 2020 46 PAN HEAD MACHIN SCREW ME1 2D X92 4250 00 MECHANISM ASSY Ref No A d d N e w Parts No Description De s t ina 301 2C B11 0974 04 REFLECTION SHEET 302 2C B11 0975 04 OPTICAL DIFFUSER 303 2C B19 2018 03 LIGHTING BOARD D1 2 B30 1572 05 LED WHITE D7 22 B30 1533 05 LED 1608 PG D24 B30 1564 05 LED 1608 BLUE ED1 2C B38 1025 05 LIQUID CRYSTAL C1 CK73EB1C225K...

Page 20: ...L11 L33 1119 05 CHOKE COIL ASSY X1 L78 0683 05 RESONATOR X2 L77 2738 05 CRYSTAL RESONATOR Ref No A d d N e w Parts No Description indicates safety critical A 2D N83 3006 46 PAN HEAD TAPTITE SCREW B 2D N80 3008 46 PAN HEAD TAPTITE SCREW C 2D N86 2606 46 BINDING HEAD TAPTITE SCREW D 2D N89 3020 46 BINDING HEAD TAPTITE SCREW H 2D N35 3010 46 BINDING HEAD MACHINE SCREW CP1 R90 0725 05 MULTI COMP 1K X2...

Page 21: ...2K J 1 16W R174 RK73GB1J104J CHIP R 100K J 1 16W R175 RK73GB1J471J CHIP R 470 J 1 16W R190 RK73GH1J102D CHIP R 1K D 1 16W R191 RK73GH1J332D METAL GLAZE RESISTOR W4 7 R92 2053 05 CHIP R 0 J 1 8W D1 S2V20 A DIODE D2 AM01Z DIODE D2 DSM1SD2 DIODE D2 ERA15 01 DIODE D3 MA4056 N M ZENER DIODE D4 U1GWJ44 DIODE D5 MA4110 L ZENER DIODE D7 AM01Z DIODE D7 DSM1SD2 DIODE D7 ERA15 01 DIODE Ref No A d d N e w Par...

Page 22: ... 0 10UF K C36 37 CK73FB0J475K CHIP C 4 7UF K C38 39 CK73GB1C104K CHIP C 0 10UF K Ref No A d d N e w Parts No Description indicates safety critical components MD UNIT X33 3120 00 C40 CK73GB1H103K CHIP C 0 010UF K C41 CK73GB1C104K CHIP C 0 10UF K C42 43 CK73GB0J105K CHIP C 1 0UF K C44 45 CK73GB1H103K CHIP C 0 010UF K C46 C92 0628 05 CHIP TAN 10UF 10WV C47 49 CK73GB1C104K CHIP C 0 10UF K C51 54 CK73G...

Page 23: ...2 ANALOGUE IC IC5 NJM4565MD IC OP AMP X2 IC6 LP2982 3 3 ANALOGUE IC IC7 TC74HCT7007AF MOS IC IC8 780076YGK R01 MI COM IC IC9 BR24C02FV W MEMORY IC IC9 CAT24WC02UI MEMORY IC IC9 M24C02WDW6T MEMORY IC Q1 2SA1362 Y TRANSISTOR Q1 2SB1295 TRANSISTOR Q2 DTA114EUA DIGITAL TRANSISTOR Ref No A d d N e w Parts No Description Q2 KRA302 DIGITAL TRANSISTOR Q3 2SC4116 Y TRANSISTOR Q4 MCH6101 TRANSISTOR Q5 KTA20...

Page 24: ...tep 530kHz 1700kHz 10kHz Channel Space Slection 9k 10kHz Usable Sensitivity S N 20dB 28dBµ 25µV MD Laser Diode GaAlAs λ 780 20nm Digital Filter D A 8 Times Over Sampling D A Converter 1 Bit Spindle Speed 400 900 rpm Wow Flutter Below Mesurable Limit Frequency Response 20 20kHz 2dB Total Harmonic Distortion 0 03 1kHz S N Ratio dB 90dB 1kHz Dynamic Range 90dB Channel Separation 85dB AMP Preout Level...

Search results

Summary of Contents for KMD-44

Reviews:

Related manuals for KMD-44

Brands by name

Popular brands

Kenwood KMD-44, Service Manual

Search results

Summary of Contents for KMD-44

Reviews:

Related manuals for KMD-44

Brands by name

Popular brands