Kenwood KDC-M6021/G Service Manual

Cd receiver

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CD RECEIVER
KDC-M6021/G
QQ
3 7 63 1515 0
SERVICE MANUAL
This service manual does not include information on the CD mechanism assembly (exploded view, parts list,
schematic diagram or mechanism operation description).
For such information, please refer to the CD mechanism assembly service manual (X92-4460-0x : B51-7891-00).
KDC-M6021
KDC-M6021G
TE
L 13942296513
Mounting hardware assy
(J21-9716-03)
DC cord
(E30-4958-05)
www
.
Escutcheon
(B07-3055-02): KDC-M6021
(B07-3054-02): KDC-M6021G
Plastic cabinet assy
(A02-1486-13)
x
ao
u163
y
i
2 9
8
Front glass
(B10-4179-01)
Front glass
(B10-4195-01)
Q Q
3
6 7
1 3
1 5
Screw set
(N99-1656-05)
co
.
9 4
2 8
©
2002-1 PRINTED IN JAPAN
B51-7894-00 (S) 1928
Panel assy
(A64-2601-02)
Panel assy
(A64-2606-02)
0 5
8
2 9
9 4
2 8
Lever
(D10-4589-04)x2
Antenna adaptor
(T90-0523/0534-05)
m
9 9
9 9

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Summary of Contents for Kenwood KDC-M6021/G

  • Page 1 CD RECEIVER KDC-M6021/G 3 7 63 1515 0 SERVICE MANUAL © 2002-1 PRINTED IN JAPAN B51-7894-00 (S) 1928 This service manual does not include information on the CD mechanism assembly (exploded view, parts list, schematic diagram or mechanism operation description).
  • Page 2 3 7 6 3 1 5 1 5 0 A 8V PLL+B Q45,47 PRE OUT OUTPUT VOLTAGE 251mV FM+B MODE (E) TYPE Q46,48 CD (MP3,NORMAL) 3600mV AM+B 230mV 1372mV 855mV AUDIO OUT CHANGER 3600mV E-VOL Q1,2 1200mV BUFF (MP3,NORMAL) & N.C. MPX FRONT L/R MUTE PRE OUT (FRONT)
  • Page 3: Component Description

    KDC-M6021/G COMPONENT DESCRIPTION 3 7 63 1515 0 SWITCH UNIT (X16-1662-70) Ref.No. Component Name Application/Function Operation/Condition/Compatibility LC75808W LCD driver with key matrix RS-171 Remote control sensor IC DTA114EUA Key permission SW For the key scanning start and the key detection SW 2SD2114K Key illumination red SW When a base goes Hi, RED LEDs are turned on.
  • Page 4 KDC-M6021/G COMPONENT DESCRIPTION 3 7 63 1515 0 Ref.No. Component Name Application/Function Operation/Condition/Compatibility DTC124EUA When Q46's base goes Hi, Q48 is turned on, and A.+8V is supplied to AM+B SW 2SB1277(Q,R) or 2SB1434 the F/E. Works during AM reception mode.
  • Page 5 KDC-M6021/G MICROCOMPUTER'S TERMINAL DESCRIPTION 3 7 63 1515 0 IC1 (ELECTRIC UNIT : X25-9202-71) Pin No. Pin Name Description Processing Operation L-DATAS Data line to LCD driver L-CLK Clock output to LCD driver PLL-DATA I/O Data input/output terminal with F/E...
  • Page 6 KDC-M6021/G MICROCOMPUTER'S TERMINAL DESCRIPTION 3 7 63 1515 0 Pin No. Pin Name Description Processing Operation TYPE0 Destination type selection terminal 0 TYPE1 Destination type selection terminal 1 TYPE2 Destination type selection terminal 2 IC2 TYPE0 IC2 setting terminal Lo: Initial value...
  • Page 7: Test Mode

    KDC-M6021/G TEST MODE 3 7 63 1515 0 1. How to enter the test mode 7. Audio-related specifications While holding the Preset 1 and Preset 3 keys, reset the • A short press of the Q key initiates the audio adjustment unit.
  • Page 8 KDC-M6021/G TEST MODE 3 7 63 1515 0 Security-related information 1. Forced Power ON mode (All models) Even when the security (Mask key) is approved, resetting the unit while holding the ATT and Preset 4 keys makes it possible to turn the power ON for 30 minutes.
  • Page 9 PC BOARD (Foil Side View) PC BOARD (Component Side View) 3 7 6 3 1 5 1 5 0 SWITCH UNIT DAUGHTER UNIT DAUGHTER UNIT SWITCH UNIT SWITCH UNIT SWITCH UNIT X16-1662-70 (J74-1314-02) X89-2522-70 (J74-1325-02) X89-2522-70 (J74-1325-02) X16-1662-70 (J74-1314-02) (X16-1662-70) (X16-1662-70) 1 3 9 4 2 2 9 6 5 1 3 REMO...
  • Page 10 PC BOARD (Component Side View) 3 7 6 3 1 5 1 5 0 ELECTRIC UNIT ELECTRIC UNIT X25-9202-71 (J74-1387-12) (X25-9202-71) R197 R198 C103 R199 C104 D120 C101 C502 1 3 9 4 2 2 9 6 5 1 3 W111 C102 D115...
  • Page 11 PC BOARD (Foil Side View) 3 7 6 3 1 5 1 5 0 ELECTRIC UNIT ELECTRIC UNIT X25-9202-71 (J74-1387-12) (X25-9202-71) R128 R125 R127 W108 R126 R124 R122 R123 R121 W104 W106 R196 R143 C107 1 3 9 4 2 2 9 6 5 1 3 R144 R244 R241...
  • Page 12 3 7 6 3 1 5 1 5 0 ELECTRIC UNIT (X25-9202-71) B.U. 140uH 14.4V 5.0V BU5V BU DETECTION BU5V BU5V BU5V SW5V SW5V SW5V 16 1 ACC DETECTION ILLUMI R103 10k PHONE R102 100 P-CON BU5V 14 3 C209 P-ANT 13 4 0.01...
  • Page 13 12 5 VIOL/BLK GRY/BLK W101 C23 0.47u50 R23 10 GRN/BLK WHT/BLK R127 100 DATA H R128 100 DC CORD R125 4.7K REQ C E.VOL. C103 KDC-M6021/G MUTE NOISE 47u10 BUFFER ANT. UPD703030GFA03 52mH 2SC4081 C104 TDA7407D 0.01 TC74HC02AF TA8273H NJM2123V-TE2 SWITCHED 0-3.5V...
  • Page 14 B LINE w w w u 1 6 3 KDC-M6021/G DC voltages are as measured with a high impedance voltmeter. Values may vary slightly due to variations CAUTION:For continued safety, replace safety critical components only with manufacturer’s recommended parts (refer to, parts list).
  • Page 15: Exploded View

    KDC-M6021/G 3 7 63 1515 0 EXPLODED VIEW DME1 FLAT WASHER : N19-2106-04 (X25-) RETAINING RING : N24-3020-46 B 2x5 : N80-2005-46 B 2x8 (BLK) : N80-2008-45 (X25-) B 3x5 : N83-3005-46 B 2x5 : N84-2005-46 (X25-) B 2.6x6 (BLK) : N84-2606-45 B 2.6x6...
  • Page 16: Parts List

    KDC-M6021/G 3 7 63 1515 0 PARTS LIST ∗ New Parts Parts without Parts No. are not supplied. Les articles non mentionnes dans le Parts No. ne sont pas fournis. Teile ohane Parts No. werden nicht geliefert. Dest Dest Ref.No.
  • Page 17 KDC-M6021/G 3 7 63 1515 0 PARTS LIST ∗ New Parts Parts without Parts No. are not supplied. Les articles non mentionnes dans le Parts No. ne sont pas fournis. SWITCH UNIT (X16-1662-70) Teile ohane Parts No. werden nicht geliefert.
  • Page 18 KDC-M6021/G 3 7 63 1515 0 PARTS LIST ∗ New Parts Parts without Parts No. are not supplied. Les articles non mentionnes dans le Parts No. ne sont pas fournis. ELECTRIC UNIT (X25-9202-71) Teile ohane Parts No. werden nicht geliefert.
  • Page 19 KDC-M6021/G 3 7 63 1515 0 PARTS LIST ∗ New Parts Parts without Parts No. are not supplied. Les articles non mentionnes dans le Parts No. ne sont pas fournis. ELECTRIC UNIT (X25-9202-71) Teile ohane Parts No. werden nicht geliefert.
  • Page 20: Specifications

    Channel Separation ..... 85dB MP3 Decode ........ Compliant with MPEG-1.0/2.0/2.5 AudioLayer-3 KENWOOD follows a policy of continuous advancements in development. For this reason specifications may be changed without notice. KENWOOD CORPORATION 14-6, Dogenzaka 1-chome, Shibuya-ku, Tokyo 150-8501, Japan KENWOOD SERVICE CORPORATION KENWOOD ELECTRONICS ITALIA S.p.A.

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